CN114421241B - Electric connector and electric connector assembly - Google Patents
Electric connector and electric connector assembly Download PDFInfo
- Publication number
- CN114421241B CN114421241B CN202210094112.2A CN202210094112A CN114421241B CN 114421241 B CN114421241 B CN 114421241B CN 202210094112 A CN202210094112 A CN 202210094112A CN 114421241 B CN114421241 B CN 114421241B
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- terminal
- contact arm
- butt joint
- contact
- electrical connector
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- 210000001503 joint Anatomy 0.000 claims abstract description 30
- 230000002265 prevention Effects 0.000 claims abstract description 3
- 230000013011 mating Effects 0.000 claims description 18
- 238000003032 molecular docking Methods 0.000 description 15
- 238000003780 insertion Methods 0.000 description 12
- 230000037431 insertion Effects 0.000 description 12
- 210000002105 tongue Anatomy 0.000 description 8
- 238000002955 isolation Methods 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 230000001154 acute effect Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6581—Shield structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention provides an electric connector and an electric connector assembly, wherein the electric connector comprises: the shell comprises a butt joint wall and a side wall, wherein the butt joint wall and the side wall form a containing cavity; a plurality of terminal modules, the terminal modules including a ground terminal; the grounding terminal comprises a first contact arm and a second contact arm; and a plurality of shielding elements positioned between adjacent terminal modules; the shielding element comprises a base part and a butt joint part, wherein the butt joint part is formed by extending outwards from one side of the base part along a first direction, and the butt joint part is provided with a short pile grounding contact prevention arm; wherein the first contact arm is opposite to the short pile preventing grounding contact arm of one shielding element, and the second contact arm is abutted against the other shielding element. Compared with the prior art, when the electric connector is in butt joint with the butt joint connector, the shielding element, the grounding terminal and the grounding terminal of the butt joint connector can be enabled to be continuous in ground, and an integral whole is formed so as to improve a return flow path of the ground.
Description
Technical Field
The present invention relates to the field of connectors, and more particularly, to an electrical connector and an electrical connector assembly.
Background
The backboard connector is widely applied to communication technology, and is a connector commonly used for large-scale communication equipment, ultra-high performance servers, supercomputers, industrial computers and high-end storage equipment. The backplane connector generally includes a plurality of signal modules arranged at intervals in a left-right direction, each signal module including an insulating member, a plurality of differential signal terminal pairs arranged at intervals in an up-down direction and fixed to the insulating member, a first shielding member, and a second shielding member, the first shielding member and the second shielding member being assembled on opposite sides of the insulating member in the left-right direction. However, when the existing backplane connector is mated with the mating connector, the "ground" discontinuity between the shield of the backplane connector, the ground terminal, and the ground terminal of the mating connector results in poor insertion loss performance, and poor crosstalk resistance.
In view of the above, it is necessary to provide an electrical connector to solve the above problems.
Disclosure of Invention
The invention aims to provide an electric connector, which can ensure that the ground among a shielding element, a ground terminal and the ground terminal of the butting connector is continuous to form a whole when the electric connector is in butting connection with the butting connector so as to improve the reflux path of the ground, thereby increasing the electromagnetic isolation between differential signal terminal pairs and improving the insertion loss and crosstalk.
To achieve the above object, the present invention provides an electrical connector comprising: the shell comprises a butt joint wall and a side wall, wherein the butt joint wall and the side wall form a containing cavity; a plurality of terminal modules, the terminal modules including a ground terminal; the ground terminal includes a first contact arm and a second contact arm; and a plurality of shielding elements positioned between adjacent terminal modules; the shielding element comprises a base part and a butt joint part, wherein the butt joint part is formed by extending outwards from one side of the base part along a first direction, and the butt joint part is provided with a short pile grounding contact prevention arm; the first contact arm is opposite to the short pile preventing grounding contact arm of one shielding element, and the second contact arm is opposite to the other shielding element.
As a further improvement of the invention, a plurality of the short pile preventing grounding contact arms are arranged along a second direction perpendicular to the first direction, and butt joint grooves are arranged between adjacent short pile preventing grounding contact arms; the terminal module further comprises a plurality of differential signal terminal pairs; the differential signal terminal pair is opposite to the butt joint groove.
As a further improvement of the present invention, the base is provided with a holding portion that is electrically connected to the ground terminal.
As a further improvement of the present invention, the ground terminal includes a first contact portion, a first mounting portion, and a first connection portion connecting the first contact portion and the first mounting portion; the first contact arm is formed by extending outwards from one side of the first connecting part along a first direction; and a yielding groove is arranged between the first contact arm and the first connecting part, and the second contact arm is formed by extending outwards along a first direction from the side edge adjacent to the yielding groove and the first connecting part.
As a further improvement of the invention, the contact area of the first contact arm with the ground terminal of the mating connector is a first contact area, and the contact area of the second contact arm with the shielding element is a second contact area; the first contact area and the second contact area are respectively positioned at two sides of the first connecting part along the thickness direction of the first connecting part.
As a further development of the invention, the maximum distance between the bottom wall of the docking groove and the stub-preventing ground contact arm is between 0 and 2.2 mm.
As a further improvement of the invention, the bottom wall of the butt joint groove is provided with a tuning part, and the tuning part is one of a tuning hole and a tuning pit.
As a further improvement of the present invention, the terminal module includes an insulating body holding the ground terminal; the side wall is provided with a first fixed part, and the insulating body is provided with a second fixed part matched with the first fixed part.
As a further improvement of the present invention, the first fixing portion is a fixing groove, and the second fixing portion is a fixing protrusion matched with the fixing groove.
As a further improvement of the present invention, the fixing protrusion is provided with a guide portion to guide the fixing protrusion into the fixing groove.
The invention also discloses an electric connector assembly, which comprises the electric connector and a butt connector matched with the electric connector.
The beneficial effects of the invention are as follows: when the electric connector is in butt joint with the butt joint connector, the ground between the shielding element, the ground terminal and the ground terminal of the butt joint connector can be continuous to form a whole, so that the ground reflux path is improved, the electromagnetic isolation between differential signal terminal pairs is increased, and the insertion loss and crosstalk are improved.
Drawings
Fig. 1 is a schematic perspective view of an electrical connector according to an embodiment of the present invention.
Fig. 2 is another angular perspective view of the electrical connector of fig. 1.
Fig. 3 is a schematic perspective view of a housing of the electrical connector of fig. 1.
Fig. 4 is a perspective view of a terminal module of the electrical connector of fig. 1.
Fig. 5 is another angular perspective view of the terminal module of fig. 4.
Fig. 6 is a schematic perspective view of a terminal assembly of the electrical connector of fig. 1.
Fig. 7 is an enlarged view of a portion of the terminal assembly of fig. 6.
Fig. 8 is a schematic plan view of the terminal module and shielding element of the electrical connector of fig. 1 after assembly.
Fig. 9 is a perspective view of the dielectric body of the electrical connector of fig. 1.
Fig. 10 is another angular perspective view of the dielectric body of fig. 9.
Fig. 11 is a perspective view of a shielding element of the electrical connector of fig. 1.
Fig. 12 is a perspective view of the terminal module and shielding element of the electrical connector of fig. 1 after assembly.
Fig. 13 is a perspective view of a securing element of the electrical connector of fig. 1.
Fig. 14 is another angular perspective view of the fixation element shown in fig. 13.
Fig. 15 is a schematic plan view of a terminal assembly of the second embodiment.
Fig. 16 is a schematic perspective view of an electrical connector assembly according to one embodiment of the present invention.
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 and 2, the present invention discloses an electrical connector 100, which includes a housing 10, a plurality of terminal modules 20 mounted on the housing 10, a plurality of shielding members 30, a fixing member 40 for fixing the terminal modules 20, and a base 50.
Referring to fig. 3 and fig. 1 and 2, the housing 10 includes a butt wall 11 and a side wall 12. The abutting wall 11 and the side wall 12 together enclose a receiving groove 13 for receiving the terminal module 20 and the shielding element 30. The docking wall 11 is configured to mate with a docking connector (not shown) and has a plurality of docking holes 111 formed therein. The docking hole 111 penetrates the docking wall 11 along the first direction AA and communicates with the receiving slot 13. The first direction AA is a direction in which the electrical connector 100 mates with a mating connector. The side wall 12 is provided with a guide portion 121 and a first fixing portion 122. The guide portion 121 is configured to mate with a mating connector to guide insertion of the mating connector into the electrical connector 100. In the present embodiment, both side walls 12 of the housing 10 are provided with the guide portions 121. Preferably, the spacing between two adjacent guides 121 on one of the side walls 12 is greater than the spacing between two adjacent guides 121 on the other side wall 12. So configured, not only can the mating connector be guided to be inserted into the electrical connector 100, but also can function as a fool-proof. In this embodiment, the guide portion 121 is a guide groove disposed along the first direction AA. It will be appreciated that in other embodiments, the guide 121 may be a guide block disposed along the first direction AA and formed to protrude outwardly from the sidewall 12. The first fixing portion 122 is located at an end of the side wall 12 away from the abutting wall 11, and is used for being matched with the terminal module 20 to fixedly mount the terminal module 20 on the housing 10. In the present embodiment, the number of the side walls 12 is 2, but it is understood that in other embodiments, the number of the side walls 12 may be set as desired.
Referring to fig. 4,5 and 1, a plurality of the terminal modules 20 are arranged along a third direction CC perpendicular to the first direction AA. The terminal module 20 includes a terminal assembly 60 and an insulating body 70 for holding the terminal assembly 60. Referring to fig. 6 and 7, the terminal assembly 60 includes a plurality of ground terminals 61 and a plurality of differential signal terminal pairs. The differential signal terminal pair is disposed between adjacent ground terminals 61. Since the differential signal terminal pairs are disposed between the adjacent two ground terminals 61 in the second direction BB perpendicular to the first direction AA and the third direction CC, signal interference between the adjacent two differential signal terminal pairs can be shielded in the same terminal module 20, thereby enhancing electromagnetic isolation between the differential signal terminal pairs and improving insertion loss and crosstalk. The ground terminal 61 includes a first contact portion 611, a first mounting portion 612, and a first connection portion 613 connecting the first contact portion 611 and the first mounting portion 612. The first contact portion 611 is formed to extend outwardly in the first direction AA from one side of the first connection portion 613, and the first mounting portion 612 is formed to extend outwardly in the fourth direction from the other side of the first connection portion 613. In this embodiment, the fourth direction coincides with the second direction BB. It will be appreciated that in other embodiments, the fourth direction may also coincide with the second direction BB, for example: the fourth direction forms an acute angle with the second direction BB. Referring to fig. 7, the first contact portion 611 includes a first contact arm 6111 electrically connected to the first grounding element and a second contact arm 6112 electrically connected to the second grounding element. In this embodiment, the first grounding element is a grounding terminal of the mating connector, and the second grounding element is a shielding element 30; when the electrical connector 100 is mated with a mating connector, the first grounding element and the second grounding element are respectively located at two sides of the first connecting portion 613 in the thickness direction of the first connecting portion 613. Since the ground terminal 61 is electrically connected to the shielding element 30, the ground signals of adjacent shielding elements 30 can be continuous to form a whole, thereby improving the return path of the ground, further increasing the electromagnetic isolation between the differential signal terminal pair, and improving the insertion loss and crosstalk. The first contact arm 6111 is formed to extend outward from one side of the first connecting portion 613 along the first direction AA. The first contact arm 6111 includes a contact finger 6114 and a pair of connection arms 6115 extending from both sides of the contact finger 6114 toward the first connection portion 613, respectively. The contact finger 6114, the pair of connecting arms 6115, and the first connecting portion 613 are collectively surrounded to form a relief groove 6113. The second contact arm 6112 is formed by extending from the side edge of the relief groove 6113 adjacent to the first connecting portion 613 along the first direction AA. Since the second contact arm 6112 is disposed in the relief groove 6113, the first contact arm 6111 and the second contact arm 6112 are positioned on a straight line in the first direction AA, so that the length of the terminal assembly 60 in the second direction BB can be effectively shortened.
Referring to fig. 8, the contact area between the first contact arm 6111 and the ground terminal of the mating connector is a first contact area, and the contact area between the second contact arm 6112 and the shielding element 30 is a second contact area. Wherein, along the thickness direction (i.e. the third direction CC) of the first connecting portion 613, the first contact region and the second contact region are respectively located at two sides of the first connecting portion 613. In this embodiment, at least one of the first contact arm 6111 and the second contact arm 6112 is an elastic contact arm. It is understood that in other embodiments, at least one of the first and second contact arms 6111, 6112 may also be configured as a rigid contact arm.
Referring to fig. 6, the first connecting portion 613 is curved such that the extending direction of the first contact portion 611 is not parallel to the extending direction of the first mounting portion 612. In the present embodiment, the extending direction of the first contact portion 611 is perpendicular to the extending direction of the first mounting portion 612. However, it is understood that in other embodiments, the extending direction of the first contact portion 611 and the extending direction of the first mounting portion 612 may not be perpendicular, for example: the two are parallel or the included angle of the two is an acute angle. The first mounting portion 612 is configured to be soldered to a circuit board, and may be one of a fisheye fillet, a needle fillet, an SMT fillet, and a convex hull.
Referring to fig. 6 and 7, the differential signal terminal pair includes two differential signal terminals 62. The differential signal terminal 62 includes a second contact portion 621, a second mounting portion 622, and a second connection portion 623 connecting the second contact portion 621 and the second mounting portion 622. The first contact arm 6111 and the second contact portion 621 are aligned along the second direction BB. The contact area between the second contact portion 621 and the signal terminal of the mating connector is a third contact area. Referring to fig. 8, in the thickness direction (i.e., the third direction CC) of the first connecting portion 613, the first contact region and the third contact region are located on the same side of the first connecting portion 613, and the second contact region is located on the other side of the first connecting portion 613. The second connection portion 623 is curved such that the extending direction of the second contact portion 621 is not parallel to the extending direction of the second mounting portion 622. In this embodiment, the extending direction of the second contact portion 621 is perpendicular to the extending direction of the second mounting portion 622. However, it is understood that in other embodiments, the extending direction of the second contact portion 621 may not be perpendicular to the extending direction of the second mounting portion 622, for example: the two are parallel or the included angle of the two is an acute angle. The second mounting portion 622 is configured to be soldered to a circuit board, and may be one of a fisheye fillet, a needle fillet, an SMT fillet, and a convex hull.
Referring to fig. 9 and 10, the insulating body 70 is used for holding the first connecting portion 613 and the second connecting portion 623 to fix the ground terminal 61 and the differential signal terminal 62. The insulating body 70 is provided with a hollowed-out portion 71. The hollowed-out portion 71 penetrates the insulating body 70 along the thickness direction (i.e., the third direction CC) of the insulating body 70. The hollowed-out portion 71 is used to expose the partial areas of the first connecting portion 613 and the second connecting portion 623 to the air. Since the dielectric constant of air is smaller than that of the insulative housing, the insertion loss of the electrical connector 100 can be reduced and the transmission speed of signals can be improved. Wires or swarf are generated during the connector process, and are in a free or fixed state. When the free or fixed metal wire or metal chip falls to the hollow portion 71, insulation and voltage resistance may be poor, or even a short circuit may occur, between adjacent differential signal terminals 62, between adjacent ground terminals 61 and differential signal terminals 62 in the hollow portion 71. Therefore, it is preferable that the surface of the portion of the terminal assembly 60 located at the hollowed-out portion 71 is provided with a layer of insulating film. By the arrangement, the problems of poor insulation voltage resistance or short circuit caused by free or fixed metal wires or metal scraps can be effectively avoided. Preferably, the thickness of the insulating film is 0.01mm to 0.1mm. In this embodiment, the first connecting portion 613 and the second connecting portion 623 are partially located in the hollow portion 71. Referring to fig. 5 and 10, the insulating body 70 is provided with a first avoiding groove 72 near the second contact portion 621. In the first direction AA, the first escape groove 72 faces the second contact portion 621. When the electrical connector 100 is mated with a mating connector, the signal terminal portions of the mating connector are positioned in the first relief grooves 72. Referring to fig. 5 and 10, a second avoidance groove 73 is formed in the insulating body 70 near the first contact arm 6111. In the first direction AA, the second escape groove 73 faces the first contact arm 6111. When the electrical connector 100 is mated with a mating connector, the ground terminal portion of the mating connector is positioned in the second relief groove 73. Referring to fig. 4 and 9, a third avoidance groove 74 is formed in the insulating body 70 near the second contact arm 6112. In the first direction AA, the third relief groove 74 is opposite the second contact arm 6112, such that the second contact arm 6112 is at least partially located within the third relief groove 74.
Referring to fig. 9 and 10, a second fixing portion 751 and a slot 752 are disposed on a side of the insulating body 70 opposite to the side wall 12. The second fixing parts 751 are mated with the first fixing parts 122 to fixedly mount the terminal module 20 on the housing 10. In this embodiment, the first fixing portion 122 is a fixing groove, and the second fixing portion 751 is a fixing protrusion engaged with the fixing groove. Preferably, the fixing protrusion is provided with a guide portion 7511 to guide the fixing protrusion into the fixing groove. Referring to fig. 9 and 10, the insulating body 70 is formed with an extension arm 753 extending outwards along the second direction BB, and a stop 754 located at an end of the extension arm 753 away from the insulating body 70. The extension arm 753, stop 754, and insulator 70 collectively form the socket 752. The side of the slot 752 facing the adjacent terminal module 20 is provided with an opening 7521 such that the slot 752 is an open slot. In this embodiment, the extension arm 753, the stop 754, and the insulator 70 together form two of the slots 752; in the third direction CC, two slots 752 are located on both sides of the extension arm 753, respectively. Of course, it is understood that in other embodiments, the number of slots 752 may be set to one.
Referring to fig. 11, 12 and 1, a plurality of shielding elements 30 are arranged along the third direction CC. The terminal module 20 is disposed between two adjacent shielding members 30. The shielding element 30 is provided with a fixing hole 301, and the insulating body 70 is disposed on a fixing post 701 matched with the fixing hole 301. The fixing holes 301 are matched with the fixing posts 701 to fixedly mount the shielding element 30 on the insulating body 70. The shielding element 30 includes a base 31, a mating portion 32 formed to extend outwardly in a first direction AA from one side of the base 31, and a mounting portion 33 formed to extend outwardly in a second direction BB from the other side of the base 31. The base 31 protrudes outward in a third direction CC perpendicular to the first direction AA and the second direction BB to form an abutment 311. Preferably, the abutting portion 311 is electrically connected to the ground terminal 61. The abutting portion 311 has a strip shape and extends from an end of the base portion 31 near the mounting portion 33 to an end of the base portion 31 near the abutting portion 32. Preferably, a notch 312 is provided at the intersection of the abutting portion 311 and the mounting portion 33. By doing so, the strength of the base 31 can be effectively enhanced. In the present embodiment, the abutting portion 311 has a strip shape, but it is understood that in other embodiments, the abutting portion 311 may be provided as an abutting arm bent and extended from one side of the base 31.
Referring to fig. 11 and 12, the abutting portion 32 has an abutting edge 321 at a side away from the base 31. The abutment 32 is provided with a stub preventing ground contact arm 322, one end of the stub preventing ground contact arm 322 being located at the abutment edge 321 and the other end extending in the first direction AA towards the base 31. The plurality of anti-short pile grounding contact arms 322 are arranged along the second direction BB, and a butting groove 323 is provided between two adjacent anti-short pile grounding contact arms 322. The first contact arm 6111 faces the stub-preventing ground contact arm 322 of one shield member 30, and the second contact arm 6112 abuts the other shield member 30. The differential signal terminal pair faces the docking slot 323. The maximum distance between the bottom wall of the abutting groove 323 and the short pile preventing ground contact arm 322 is between 0 and 2.2 mm. Further, the abutment 32 includes a base wall 3201. The stub preventing ground contact arm 322 is formed to protrude outwardly from the base wall 3201 in the third direction CC. The stub preventive ground contact arm 322 is mechanically connected to the base 31 in the first direction AA and mechanically connected to the bottom wall of the docking groove 323 in the second direction BB. The maximum distance between the stub preventing ground contact arm 322 and the base wall 3201 is between 0 and 1.1 millimeters. Further, the groove bottom wall of the abutting groove 323 is formed recessed inward from the base wall 3201. The maximum distance between the bottom wall of the abutting groove 323 and the base wall 3201 is between 0 and 1.1 mm.
Further, the end of the stub preventing ground contact arm 322 remote from the base 31 is provided with a first docking tongue 3221. The length of the stub preventing ground contact arm 322 in the first direction AA is between 0.2 and 10mm, and the length of the first abutting tongue 3221 in the first direction AA is between 0 and 6.4 mm.
Further, the bottom wall of the docking groove 323 is provided with a second docking tongue 3231 at an end remote from the base 31. The length of the second abutment tongue 3231 in the first direction AA is between 0 and 6.4 mm. A clearance groove 3232 is provided between the adjacent first and second abutting tongues 3221, 3231. Although in the present embodiment, the clearance groove 3232 is provided between the adjacent first and second butt tongues 3221, 3231, in other embodiments, the clearance groove may not be provided between the adjacent first and second butt tongues 3221, 3231. When there is no gap between the adjacent first and second butt-joint tongues 3221, 3231, the ground return path is shorter, so that the insertion loss performance and the anti-crosstalk performance are better.
Referring to fig. 11 and 12, the bottom wall of the docking groove 323 is further provided with a tuning portion 3233. The tuning part 3233 is one of a tuning hole and a tuning pit. The tuning hole is a through hole penetrating the bottom wall of the docking groove 323 in the thickness direction of the bottom wall. The tuning pit is a non-through slot. Preferably, the bottom wall of the docking groove 323 has a plurality of tuning parts 3233. The tuning parts 3233 may be symmetrically distributed or may be radially distributed. When the plurality of tuning portions 3233 are provided on the bottom wall of the docking groove 323, the plurality of tuning portions 3233 may be all tuning holes, all tuning pits, or a part of tuning holes and a part of tuning pits.
Referring to fig. 13 and 14, the fixing element 40 is used to fix the plurality of terminal modules 20 together. The fixing element 40 includes a base 41, a plurality of insertion plates 42 extending outwardly from one end of the base 41, and an extension plate 43 extending outwardly from the other end of the base 41. The insert plate 42 is inserted into the slot 752 to fix the terminal module 20 as a whole. The slot 752 is provided with a first stop 7522. The plug board 42 is provided with a second limiting member 421 matched with the first limiting member 7522, so as to fix the terminal module 20 and the fixing element 40 together through the matching of the first limiting member 7522 and the second limiting member 421. In this embodiment, the first limiting member 7522 is a limiting protrusion, and the second limiting member 421 is a limiting groove matched with the limiting protrusion. Preferably, the limit projection is provided with a first guide surface 7523, and the end of the insert plate 42 away from the base plate 41 is provided with a second guide surface 422. The first guiding surface 7523 is matched with the second guiding surface 422, so that the limit protrusion smoothly enters the limit groove.
Further, the extension plate 43 is further provided with a sub slot 431. The insulating body 70 is further provided with a sub-board 702 which is mated with the sub-slot 431. The sub board 702 is inserted into the sub slot 431 so that the fixing member 40 and the terminal module 20 are fixed together. Preferably, the sub board 702 is provided with a protrusion (not shown). The protrusion is in interference fit with the secondary slot 431.
Referring to fig. 2, the base 50 has a plate shape and is configured to cooperate with the terminal module 20 and the shielding element 30 to fix the terminal module 20 and the shielding element 30 as a whole. The base 50 is provided with a plurality of insertion holes 51 so that the first and second mounting portions 612 and 622 pass through.
Compared with the prior art, when the electric connector 100 is in butt joint with the butt joint connector, the shielding element 30, the grounding terminal 61 and the grounding terminal of the butt joint connector can be continuous to form a whole, so that the reflux path of the grounding is improved, the electromagnetic isolation between differential signal terminal pairs is increased, and the insertion loss and crosstalk are improved.
Referring to fig. 15, another embodiment of a terminal assembly 80 is also disclosed. The structure of the terminal assembly 80 is substantially the same as that of the terminal assembly 60, except that: the ground terminal 81 of the terminal assembly 80 further includes a third contact arm 8131 electrically connected to a third ground element. The third contact arm 8131 is formed to extend outwardly in the fourth direction from a side of the first connection portion 813 remote from the first contact portion 811. The third contact arm 8131 is one of an elastic contact arm and a rigid contact arm. In this embodiment, the third grounding element is a shielding element between adjacent terminal assemblies 80. By the arrangement, the ground continuity of the adjacent shielding elements can be further enhanced, so that the ground reflux path is further improved, the electromagnetic isolation between the differential signal terminal pairs is enhanced, and the insertion loss and crosstalk are improved.
The invention also discloses a grounding structure comprising the terminal assembly 60/80, a first grounding element and a second grounding element. The first ground members, terminal assemblies 60/80 are spaced apart and aligned in a third direction perpendicular to the first and second directions. The grounding terminal 61/81 is electrically connected to the first grounding element and the second grounding element at the same time. Wherein in the third direction, the first and second grounding elements are disposed on both sides of the grounding terminal 61/81, respectively. In this embodiment, the first grounding element is a shielding element, and the second grounding element is a grounding terminal of the mating connector.
The invention also discloses an electric connector assembly 300, which comprises the electric connector 100 and a butt connector 200 matched with the electric connector 100.
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 (9)
1. An electrical connector, comprising:
the shell comprises a butt joint wall and a side wall, wherein the butt joint wall and the side wall form a containing cavity;
a plurality of terminal modules, the terminal modules including a ground terminal; the ground terminal includes a first contact arm and a second contact arm; and
A plurality of shielding elements positioned between adjacent terminal modules; the shielding element comprises a base part and a butt joint part which is formed by extending outwards from one side of the base part along a first direction, wherein the base part is provided with a supporting part, the supporting part is electrically connected with the grounding terminal, and the butt joint part is provided with a short pile prevention grounding contact arm;
The first contact arm is opposite to the short pile preventing grounding contact arm of one shielding element, and the second contact arm is opposite to the other shielding element; the short pile preventing grounding contact arms are arranged along a second direction perpendicular to the first direction, and butt joint grooves are formed between adjacent short pile preventing grounding contact arms; the terminal module further comprises a plurality of differential signal terminal pairs, and the differential signal terminal pairs are opposite to the butt joint grooves.
2. The electrical connector of claim 1, wherein: the grounding terminal comprises a first contact part, a first mounting part and a first connecting part for connecting the first contact part and the first mounting part; the first contact arm is formed by extending outwards from one side of the first connecting part along a first direction; and a yielding groove is arranged between the first contact arm and the first connecting part, and the second contact arm is formed by extending outwards along a first direction from the side edge adjacent to the yielding groove and the first connecting part.
3. The electrical connector of claim 2, wherein: the contact area between the first contact arm and the grounding terminal of the butting connector is a first contact area, and the contact area between the second contact arm and the shielding element is a second contact area; the first contact area and the second contact area are respectively positioned at two sides of the first connecting part along the thickness direction of the first connecting part.
4. The electrical connector of claim 1, wherein: the maximum distance between the bottom wall of the butt joint groove and the short pile preventing grounding contact arm is 0-2.2 mm.
5. The electrical connector of claim 1, wherein: the bottom wall of the butt joint groove is provided with a tuning part, and the tuning part is one of a tuning hole and a tuning pit.
6. The electrical connector of claim 1, wherein: the terminal module includes an insulative body that holds the ground terminal; the side wall is provided with a first fixed part, and the insulating body is provided with a second fixed part matched with the first fixed part.
7. The electrical connector of claim 6, wherein: the first fixing part is a fixing groove, and the second fixing part is a fixing protrusion matched with the fixing groove.
8. The electrical connector of claim 7, wherein: the fixing protrusion is provided with a guide portion to guide the fixing protrusion into the fixing groove.
9. An electrical connector assembly, comprising:
The electrical connector of any one of claims 1-8; and
A mating connector mated with the electrical connector.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210094112.2A CN114421241B (en) | 2022-01-26 | 2022-01-26 | Electric connector and electric connector assembly |
| US17/740,263 US20230238744A1 (en) | 2022-01-26 | 2022-05-09 | Shielding means and high-speed electrical connector using the same |
| US17/740,300 US20230238742A1 (en) | 2022-01-26 | 2022-05-09 | Terminal module and high-speed electrical connector using the same |
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| CN202210094112.2A CN114421241B (en) | 2022-01-26 | 2022-01-26 | Electric connector and electric connector assembly |
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| CN114421241A CN114421241A (en) | 2022-04-29 |
| CN114421241B true CN114421241B (en) | 2024-04-30 |
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| CN202210094112.2A Active CN114421241B (en) | 2022-01-26 | 2022-01-26 | Electric connector and electric connector assembly |
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| CN (1) | CN114421241B (en) |
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