This application claims the priority benefit of Chinese Patent Application Serial Number 202011073423.8, filed on Oct. 9, 2020, the full disclosure of which is incorporated herein by reference.
The present disclosure relates to the technical field of connector, particularly to a terminal assembly and electrical connector.
As the transmission rate of connectors increases, the requirements for crosstalk index of the connector becomes more strict, and reducing the crosstalk in connectors also becomes a crucial issue. Conventional connectors often comprise a terminal assembly, which comprises a plurality of terminals disposed at intervals and an insulating body. The plurality of terminals often comprises a plurality of ground terminals and a plurality of signal terminals. Two signals are disposed between two ground terminals and form a differential signal pair. However, the two ground terminals can only shield a part of the signal terminals, so the plurality of signal terminals would still mutually crosstalk.
The embodiments of the present disclosure provide an electrical connector tended to solve the problem that conventional connectors are prone to signal crosstalk during signal transmission.
In one embodiment, a terminal assembly is provided, comprising a plurality of terminals, an insulating body, a first electromagnetic shielding member, and a second electromagnetic shielding member. The plurality of terminals comprises a plurality of signal terminals and a plurality of ground terminals. The plurality of signal terminals and the plurality of ground terminals are disposed at intervals. At least one signal terminal is disposed between two adjacent ground terminals. The insulating body is disposed at the plurality of terminals. One end of each of the terminals protrudes from one side of the insulating body. The other end of each of the terminals is exposed from the insulating body. The first electromagnetic shielding member is disposed at one side of the insulating body and is connected with the plurality of ground terminals. The second electromagnetic shielding member is disposed at the other side of the insulating body and is opposite to the first electromagnetic shielding member. The second electromagnetic shielding member is connected with the plurality of ground terminals. The second electromagnetic shielding member comprises a plurality of ground elastic pieces disposed at intervals extending in a direction away from the insulating body.
In another embodiment, an electrical connector is provided, comprising a terminal assembly according to the above embodiment, a plurality of cables, a housing, and a metal cover. The plurality of cables are electrically connected with one ends of the plurality of terminals of the terminal assembly, respectively. The housing accommodates the terminal assembly. One ends of the plurality of terminals away from the plurality of the cables and the plurality of ground elastic pieces protrude from the housing. The plurality of cables protrude from one side of the housing. The metal cover is disposed on the housing.
In the embodiments of the present disclosure, by increasing the plurality of ground elastic pieces to be disposed on the second electromagnetic shielding member, the plurality of ground elastic pieces can be respectively connected with the ground terminals of a mating connector to avoid crosstalk among the plurality of signal terminals transmitting signals between the electrical connector and the mating connector. Thus, the signal transmission performance of electrical connectors can be effectively improved.
It should be understood, however, that this summary may not contain all aspects and embodiments of the present disclosure, that this summary is not meant to be limiting or restrictive in any manner, and that the disclosure as disclosed herein will be understood by one of ordinary skill in the art to encompass obvious improvements and modifications thereto.
The features of the exemplary embodiments believed to be novel and the elements and/or the steps characteristic of the exemplary embodiments are set forth with particularity in the appended claims. The Figures are for illustration purposes only and are not drawn to scale. The exemplary embodiments, both as to organization and method of operation, may best be understood by reference to the detailed description which follows taken in conjunction with the accompanying drawings in which:
The present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. This present disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.
Certain terms are used throughout the description and following claims to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This document does not intend to distinguish between components that differ in name but function. In the following description and in the claims, the terms “include/including” and “comprise/comprising” are used in an open-ended fashion, and thus should be interpreted as “including but not limited to”. “Substantial/substantially” means, within an acceptable error range, the person skilled in the art may solve the technical problem in a certain error range to achieve the basic technical effect.
The following description is of the best-contemplated mode of carrying out the disclosure. This description is made for the purpose of illustration of the general principles of the disclosure and should not be taken in a limiting sense. The scope of the disclosure is best determined by reference to the appended claims.
Moreover, the terms “include”, “contain”, and any variation thereof are intended to cover a non-exclusive inclusion. Therefore, a process, method, object, or device that includes a series of elements not only includes these elements, but also includes other elements not specified expressly, or may include inherent elements of the process, method, object, or device. If no more limitations are made, an element limited by “include a/an . . . ” does not exclude other same elements existing in the process, the method, the article, or the device which includes the element.
The detailed configuration of the terminal assembly 10 disposed in the corresponding accommodating groove 121 is described below. Herein, the terminal assembly 10 of the accommodating groove 121 on the left side of
Referring to
In one embodiment, the two signal terminals 101a between two adjacent ground terminals 101b are symmetrically disposed (shown in
In one embodiment, the connecting part 1013 of each of the terminals 101 is bent to allow a difference in height between the connecting end part 1012 and the contacting end part 1011 of each of the terminals 101. In this embodiment, the contacting end part 1011 and the connecting end part 1012 of each of the terminals 101 are disposed along the third direction Z at intervals. The connecting part 1013 comprises a connecting body 10131 and is disposed between the contacting end part 1011 and the connecting end part 1012. The extending direction of the connecting body 10131 intersects with the extending direction of the contacting end part 1011 and the extending direction of the connecting end part 1012 respectively. In this embodiment, the connecting body 10131 extends along the third direction Z.
In this embodiment, the width of the connecting part 1013 of each of the signal terminals 101a in the second direction Y is narrower than the width of the contacting end part 1011 and the width of the connecting end part 1012 of the signal terminal 101a in the second direction Y. In this way, the gap distance between the connecting part 1013 of each of the signal terminals 101a and the connecting part 1013 of an adjacent ground terminal 101b can be increased. The connecting part 1013 of each of the signal terminals 101a further comprises a bump 10132. The bump 10132 is disposed on one side of the connecting body 10131 in the second direction Y, and extends toward the connecting body 10131 of the adjacent signal terminal 101a from the connecting body 10131. The bump 10132 of the connecting part 1013 of each of the signal terminals 101a is opposed to the bump 10132 of the connecting part 1013 of the adjacent signal terminal 101a to shorten the gap distance between the connecting part 1013 of each of the signal terminals 101a and the connecting part 1013 of the adjacent signal terminal 101a.
In one embodiment, the contacting end part 1011 of each of the terminals 101 (comprising the signal terminal 101a and the ground terminal 101b) comprises a contacting main body 10111 and a contacting elastic piece 10112. The contacting main body 10111 is connected with one end of the connecting part 1013 away from the connecting end part 1012. The contacting elastic piece 10112 is connected with one end of the contacting main body 10111 away from the connecting part 1013. The width of the contacting main body 10111 of each of the terminals 101 in the second direction Y is wider than the width of the contacting elastic piece 10112 in the second direction Y. In this way, the gap distance between the contacting elastic piece 10112 of each of the terminals 101 and the contacting elastic piece 10112 of the adjacent terminal 101 can be increased. In this embodiment, the distance between the contacting elastic piece 10112 of each of the signal terminals 101a and the contacting elastic piece 10112 of the adjacent ground terminal 101b is greater than the distance between the contacting elastic piece 10112 of each of the signal terminals 101a and the contacting elastic piece 10112 of the adjacent signal terminal 101a.
In this embodiment, a surface of the contacting elastic piece 10112 of each of the signal terminals 101a close to the adjacent signal terminal 101a and a surface of the contacting main body 10111 close to the adjacent signal terminal 101a of each signal terminals 101a are on the same plane, allowing the distance between the contacting main body 10111 of each of the signal terminals 101a and the contacting main body 10111 of the adjacent signal terminal 101a to be equal to the distance between the contacting elastic piece 10112 of each of the signal terminals 101a and the contacting elastic piece 10112 of the adjacent signal terminal 101a to improve the signal transmission performance of the differential signal pairs. In one embodiment, the joint between the contacting main body 10111 and the contacting elastic piece 10112 of each of the terminals 101 comprises a first tapering part 10113, which allows the contacting main body 10111 to be connected with the contacting elastic piece 10112 without obstruction.
In one embodiment, the contacting elastic piece 10112 of each of the terminals 101 comprises an elastic piece main body 10114 and a contacting bump 10115. The elastic piece main body 10114 is connected with the contacting main body 10111. The contacting bump 10115 is connected with one end of the elastic piece main body 10114 away from the contacting main body 10111 and protrudes in a direction away from the contacting main body 10111. The width of the elastic piece main body 10114 of each of the signal terminals 101a in the second direction Y is greater than the width of the contacting bump 10115 of each of the signal terminals 101a in the second direction Y. The width of the elastic piece main body 10114 of each of the ground terminals 101b in the second direction Y is equal to the width of the contacting bump 10115 of each of the ground terminals 101b in the second direction Y. The contacting bump 10115 of each of the signal terminals 101a and the contacting bump 10115 of each of the ground terminals 101b correspond to a plurality of contacting pads of the mating connector to ensure that each of the terminals 101 can be effectively connected with the mating connector. In this embodiment, the joint between the elastic piece main body 10114 and the contacting bump 10115 of each of the signal terminals 101a further comprises a second tapering part 10116, which allows the elastic piece main body 10114 to be connected with the contacting bump 10115 without obstruction.
In this embodiment, the contacting end part 1011 of each of the ground terminals 101b further comprises an opening groove 10117. The opening groove 10117 is provided at the contacting main body 10111 and at the contacting elastic piece 10112 and extends along the first direction X. One end of the opening groove 10117 penetrates one end of the contacting end part 1011 away from the connecting part 1013, dividing the contacting bump 10115 into two sub-contacting bumps 10115a. The width of each of the sub-contacting bumps 10115a in the second direction Y is equal to the width of the contacting bump 10115 of each of the signal terminals 101a, so that the contacting bump 10115 of each of the ground terminals 101b can be quite elastic to connect with the ground conductive pad of the mating connector by direct contacting or by correspondingly arranged then mutually closed to.
As the configuration of each of the terminals 101 comprises been described above, the configuration of the insulating body 102 would be illustrated below. Referring to
In this embodiment, the first surface 1021 of the insulating body 102 comprises a plurality of signal connecting parts 10211 and a plurality of first ground connecting parts 10212. The plurality of signal connecting parts 10211 and the plurality of first ground connecting parts 10212 are alternately arranged in a row along the second direction Y. Two connecting end parts 1012 of two adjacent signal terminals 101a are disposed in the corresponding signal connecting parts 10211. A surface of the cable connecting body 10122 of the connecting end part 1012 of each of the signal terminals 101a in the third direction Z is exposed from the signal connecting part 10211 for the two signal lines 111 of the cable 11 to be connected with the corresponding cable connecting bodies 10122. The connecting end part 1012 of each of the ground terminals 101b is disposed in the corresponding first ground connecting part 10212. The connecting end part 1012 of each of the ground terminals 101b is exposed from the first ground connecting part 10212.
In this embodiment, the second surface 1022 of the insulating body 102 further comprises a plurality of second ground connecting parts 10221. The plurality of second ground connecting parts 10221 are arranged along the second direction Y at intervals, and respectively correspond to the plurality of first ground connecting parts 10212. The connecting end part 1012 of each of the ground terminals 101b is disposed in the corresponding second ground connecting part 10221 and is exposed from the second ground connecting part 10221.
In this embodiment, the first terminal assembly further comprises a first electromagnetic shielding member 103 and a second electromagnetic shielding member 104. The first electromagnetic shielding member 103 and the second electromagnetic shielding member 104 are respectively disposed on the insulating body 102. The first electromagnetic shielding member 103 is connected with a surface of the connecting end part 1012 of the ground terminal 101b exposed from each of the first ground connecting parts 10212. The second electromagnetic shielding member 104 is connected with a surface of the connecting end part 1012 of the ground terminal 101b exposed from each of the second ground connecting parts 10221. The first electromagnetic shielding member 103 can be connected with the surface of the connecting end part 1012 of the ground terminal 101b exposed from each of the first ground connecting parts 10212 by direct contacting or by correspondingly arranged then mutually closed to. Similarly, the second electromagnetic shielding member 104 can be connected with the surface of the connecting end part 1012 of the ground terminal 101b exposed from each of the second ground connecting parts 10221 by direct contacting or by correspondingly arranged then mutually closed to.
In this embodiment, the first electromagnetic shielding member 103 is disposed on the first surface 1021 and the fourth surface 1024, and the second electromagnetic shielding member 104 is disposed on the second surface 1022 and the third surface 1023. The first electromagnetic shielding member 103 is disposed above the insulating body 102, and the second electromagnetic shielding member 104 is disposed below the insulating body 102. A surface of the first electromagnetic shielding member 103 corresponding to the first surface 1021 comprises a plurality of first contacting bumps 1031 arranged at intervals. The plurality of first contacting bumps 1031 are respectively connected with the connecting end part 1012 of the ground terminal 101b of the corresponding first ground connecting part 10212. Specifically, the plurality of first contacting bumps 1031 are respectively connected with the connecting end part 1012 of the ground terminal 101b of the corresponding first ground connection part 10212 by direct contacting or by correspondingly arranged then mutually closed to. A surface of the second electromagnetic shielding member 104 corresponding to the second surface 1022 comprises a plurality of second contacting bumps 1041 arranged at intervals. The plurality of second contacting bumps 1041 are respectively connected with the connecting end part 1012 of the ground terminal 101b of the corresponding second ground connecting part 10221. Specifically, the plurality of second contacting bumps 1041 are respectively connected with the connecting end part 1012 of the ground terminal 101b of the corresponding second ground connecting part 10221 by direct contacting or by correspondingly arranged then mutually closed to.
In one embodiment, the surface of the first electromagnetic shielding member 103 in the third direction Z further comprises a plurality of first positioning elastic pieces 1033, each of which is disposed between two adjacent first contacting bumps 1031 and extends toward the insulating body 102. The plurality of first positioning elastic pieces 1033 respectively correspond to the plurality of signal connecting parts 10211. The surface of the second electromagnetic shielding member 104 in the third direction Z further comprises a plurality of second positioning elastic pieces 1042, each of which is disposed between two adjacent second contacting bumps 1041 and extends toward the insulating body 102. The plurality of second positioning elastic pieces 1042 respectively correspond to the plurality of signal connecting parts 10211. When each of the cables 11 is disposed between the first electromagnetic shielding member 103 and the second electromagnetic shielding member 104, the first positioning elastic piece 1033 and the second positioning elastic piece 1042 would abut against the surface of the cable 11 to secure the cable 11 to the first electromagnetic shielding member 103 and to the second electromagnetic shielding member 104, so that the cable 11 would not be easily detached from the first electromagnetic shielding member 103 and nor the second electromagnetic shielding member 104, and would not be detached from the plurality of the terminals 101. In other embodiments, the above-mentioned effects can also be achieved even the plurality of first positioning elastic pieces 1033 or the plurality of second positioning elastic pieces 1042 is omitted, which would not be repeated herein.
In one embodiment, the surface of the first electromagnetic shielding member 103 in the third direction Z further comprises a plurality of cable accommodating bumps 1034, which are arranged along the second direction Y at intervals. Each of the cable accommodating bumps 1034 is disposed between two adjacent first contacting bumps 1031. The protruding direction of the first contacting bump 1031 is opposite to the protruding direction of the cable accommodating bump 1034. In other words, the first contacting bump 1031 protrudes in a direction closing to the insulating body 102, and the cable accommodating bump 1034 protrudes in a direction away from the insulating body 102. In this embodiment, the plurality of wiring notches 1032 and the plurality of first positioning elastic pieces 1033 are respectively disposed on a surface of the corresponding cable accommodating bump 1034 in the third direction Z. That is, each of the cable accommodating bumps 1034 comprises a wiring notch 1032 and a first positioning elastic piece 1033.
The plurality of cable accommodating bumps 1034 respectively correspond to the plurality of signal connecting parts 10211. An accommodating space exists between each of the cable accommodating bumps 1034 and the corresponding signal connecting part 10211. Two signal lines 111 of each of the cables 11 could enter the accommodating space and are respectively connected with two signal terminals 101a exposed from the signal connecting part 10211 to keep the first electromagnetic shielding member 103 from contacting with the two signal lines 111 of each of the cables 11.
In this embodiment, the first surface 1021 of the insulating body 102 further comprises a plurality of third ground connecting parts 10213. The plurality of third ground connecting parts 10213 are disposed in a row along the second direction Y at intervals and are disposed on one side of the plurality of first ground connecting parts 10212 close to the plurality of contacting end parts 1011 of the plurality of terminals 101, as shown in
In this embodiment, the third surface 1023 of the insulating body 102 further comprises a plurality of fourth ground connecting parts 10231. The plurality of fourth ground connecting parts 10231 are arranged in a row along the second direction Y at intervals and respectively correspond to the plurality of second ground connecting parts 10221. The connecting part 1013 of each of the ground terminals 101b is exposed from the corresponding fourth ground connecting part 10231. A surface of the second electromagnetic shielding member 104 corresponding to the third surface 1023 comprises a plurality of fourth contacting bumps 1043 arranged at intervals. The plurality of fourth contacting bumps 1043 are disposed on one side of the plurality of second contacting bumps 1041, and are respectively connected with the connecting part 1013 of the ground terminal 101b exposed from the corresponding fourth ground connecting part 10231. Specifically, the plurality of fourth contacting bumps 1043 are respectively connected with the connecting part 1013 of the ground terminal 101b exposed from the corresponding fourth ground connecting part 10231 by direct contacting or by correspondingly arranged then mutually closed to.
In this embodiment, the fourth surface 1024 of the insulating body 102 further comprises a plurality of fifth ground connecting parts 10241. The plurality of fifth ground connecting parts 10241 are arranged in a row along the second direction Y at intervals and respectively correspond to the plurality of third ground connecting parts 10213. The connecting body 10131 of the connecting part 1013 of each of the ground terminals 101b is exposed from the corresponding fifth ground connecting part 10241. A surface of the first electromagnetic shielding member 103 corresponding to the fourth surface 1024 further comprises a plurality of fifth contacting bumps 1036 arranged at intervals. The plurality of fifth contacting bumps 1036 are disposed on one side of the plurality of third contacting bumps 1035 and are respectively connected with the connecting part 1013 of the ground terminal 101b exposed from the corresponding fifth ground connecting part 10241. Specifically, the plurality of fifth contact bumps 1036 are respectively connected with the connecting part 1013 of the ground terminal 101b exposed from the corresponding fifth ground connecting part 10241 by direct contacting or by correspondingly arranged then mutually closed to. In this embodiment, each of the fifth ground connecting parts 10241 is respectively communicating with the corresponding third ground connecting part 10213.
Thus, by providing the third ground connecting part 10213, the fourth ground connecting part 10231, and the fifth ground connecting part 10241, the exposed area of the ground terminal 101b from the insulating body 102 can be increased, and by providing the third contacting bump 1035 and the fifth contacting bump 1036 on the first electromagnetic shielding member 103 and providing the fourth contacting bump 1043 on the second electromagnetic shielding member 104, the area where the first electromagnetic shielding member 103 and the second electromagnetic shielding member 104 are connected with the ground terminal 101b can be increased. In this way, the electromagnetic shielding performance of the first electromagnetic shielding member 103 and the second electromagnetic shielding member 104 can be improved, allowing the first electromagnetic shielding member 103 and the second electromagnetic shielding member 104 to keep the two signal terminals 101a of each of the differential signal pairs from being electromagnetically interfered from external and to avoid mutual interference between adjacent two differential signal pairs.
In one embodiment, the second electromagnetic shielding member 104 further comprises a shielding body 1044 and a plurality of ground elastic pieces 1045. The plurality of second contacting bumps 1041 and the plurality of fourth contacting bumps 1043 are disposed on the shielding body 1044. The plurality of ground elastic pieces 1045 are disposed along the second direction Y at intervals at one end of the shielding body 1044 in the first direction X and are disposed at one side of the shielding body 1044 in the third direction Z. The plurality of ground elastic pieces 1045 extend in a direction close to the connecting end part 1012 of each of the terminals 101. In this embodiment, the plurality of ground elastic pieces 1045 are disposed under the shielding body 1044. One end of each of the ground elastic pieces 1045 is connected with one end of the shielding body 1044 in the first direction X. Each of the ground elastic pieces 1045 is inclined to the shielding body 1044. An angle is formed between each of the ground elastic pieces 1045 and the shielding body 1044, and the angle is smaller than 90 degrees. In this embodiment, two ground elastic pieces 1045 are provided between two adjacent fourth contacting bumps 1043. Each of the ground elastic pieces 1045 corresponds to a gap between the adjacent signal terminal 101a and the ground terminal 101b. In this embodiment, the plurality of ground elastic pieces 1045 of the second electromagnetic shielding member 104 are connected with a shielding ground conductive pad of the mating connector.
In one embodiment, two opposite sides of the insulating body 102 in the second direction Y are respectively provided with a first buckling part 1025 and a second buckling part 1026. Two opposite sides of the first electromagnetic shielding member 103 in the second direction Y are respectively provided with a third buckling part 1037. The third buckling part 1037 engages with the corresponding first buckling part 1025 to position the first electromagnetic shielding member 103 on the insulating body 102. Two opposite sides of the second electromagnetic shielding member 104 in the second direction Y are respectively provided with a fourth buckling part 1046. Each of the fourth buckling parts 1046 is buckled with the corresponding second buckling part 1026 to position the second electromagnetic shielding member 104 on the insulating body 102. Specifically, each of the first buckling parts 1025 and each of the second buckling parts 1026 are respectively a bump. Each of the first buckling parts 1025 and each of the second buckling parts 1026 extend along the third direction Z. Each of the third buckling parts 1037 and each of the fourth buckling parts 1046 are respectively a recess. In this embodiment, the first electromagnetic shielding member 103 and the second electromagnetic shielding member 104 are made of conductive materials, such as conductive plastic, metal, or electroplated plastic.
Referring to
Referring to
In this embodiment, when the first terminal assembly 10a and the second terminal assembly 10b are respectively disposed in the corresponding accommodating groove 121, the first terminal assembly 10a would be disposed above the second terminal assembly 10b, the plurality of cables 11 connected with the first terminal assembly 10a would pass through the upper area of the second terminal assembly 10b, and the plurality of cables 11 connected with the first terminal assembly 10a and the plurality of cables 11 connected with the second terminal assembly 10b would pass through the wiring opening 123 of the housing 12. The second electromagnetic shielding member 104 of the first terminal assembly 10a is connected with the first electromagnetic shielding member 103 of the second terminal assembly 10b to connect the plurality of ground terminals 101b of the first terminal assembly 10a and the plurality of ground terminals 101b of the second terminal assembly 10b in series. In this way, the crosstalk between the two terminal assemblies 10 of the electrical connector 1 during signal transmission can be avoided to improve signal transmission performance of the electrical connector 1. The second electromagnetic shielding member 104 of the first terminal assembly 10a and the first electromagnetic shielding member 103 of the second terminal assembly 10b can also be connected through a conductor to perform the above-mentioned effect. In other embodiments, the second electromagnetic shielding member 104 of the first terminal assembly 10a may not be connected to the first electromagnetic shielding member 103 of the second terminal assembly 10b, which would not be repeated herein.
In one embodiment, two opposite sides of the insulating body 102 in the second direction Y of each of the terminal assemblies 10 respectively comprise a first positioning part 1027. Two opposite sides of each of the accommodating grooves 121 in the second direction Y respectively comprise a second positioning part 1211. When each of the terminal assemblies 10 is disposed in the corresponding accommodating groove 121, each of the first positioning parts 1027 of the insulating body 102 would be connected with the corresponding second positioning part 1211 to position each of the terminal assemblies 10 in the corresponding accommodating groove 121. Specifically, the first positioning part 1027 is a dovetail bump and protrudes in the second direction Y. The second positioning part 1211 is a dovetail groove.
Referring to
In one embodiment, the housing 12 comprises a plurality of first engaging parts 1212 respectively disposed on the peripheries of the two accommodating grooves 121. The metal cover 14 further comprises a plurality of second engaging parts 141. When the metal cover 14 is disposed on the housing 12, each of the first engaging parts 1212 would be engaged with the corresponding second engaging part 141. In this embodiment, the first engaging part 1212 is a bump and extends toward the metal cover 14. The second engaging part 141 is a hole. In other embodiments, the first engaging part 1212 is a hot-melt column. When the first engaging part 1212 is engaged with the second engaging part 141, the first engaging part 1212 is heated to melt, and the second engaging part 141 is sealed to secure the metal plate 14 onto the housing 12. The first side surface 12a of the housing 12 further comprises a third engaging part 1213 comprising a plurality of engaging blocks 12131 disposed at intervals. The first sidewall 14a of the metal cover 14 comprises a fourth engaging part 142 comprising a plurality of engaging notches 1421. A rib 1422 is provided between two adjacent engaging notches 1421. When the metal cover 14 is disposed on the housing 12, each of the engaging blocks 12131 would be disposed in the corresponding engaging notch 1421, and each of the ribs 1422 would be disposed between two adjacent engaging blocks 12131 to position the metal cover 14 on the housing 12. In this embodiment, each of the engaging blocks 12131 is disposed between two adjacent ground terminals 101b, each of the ribs 1422 corresponds to the ground terminal 101b, and an end surface of each of the ribs 1422 close to the bottom surface of the housing 12 is coplanar with the bottom surface of the housing 12.
Referring to
In this embodiment, the electrical connector further comprises a sideboard 16. The sideboard 16 is disposed on the housing 12 and on the metal cover plate 14 and covers the wiring opening 123. The sideboard 16 is formed by pouring insulative plastic into a fixture, indicating that the sideboard 16 covers the plurality of cables 11. An end surface of the sideboard 16 close to the bottom surface of the housing 12 is coplanar with the bottom surface of the housing 12.
When the electrical connector 1 is connected to the circuit board 20 of the mating connector 2, an end surface of the housing 12, an end surface of the metal cover 14, and an end surface of the sideboard 16 of the electrical connector 1 would be in contact with a surface of the circuit board 20. The contacting elastic piece of each of the signal terminals of each of the terminal assemblies of the electrical connector 1 is connected with the corresponding signal conductive pad 22. The contacting elastic piece 10112 of each of the ground terminals 101b is connected with the corresponding ground conductive pad 21. The ground elastic piece 1045 of the second electromagnetic shielding member 104 is connected with the corresponding shielding ground conductive pad 23. The connection described above refers to contact connection or non-contact connection. In this embodiment, the circuit board 20 surrounds the two signal conductive pads 21 through two ground conductive pads 21 and two shielding ground conductive pads 23. When each of the ground conductive pads 21 is connected to the corresponding ground terminal and when the two shielding ground conductive pads 23 are connected to the corresponding second electromagnetic shielding member 104, the two grounding conductive pads 21 and the two shielding ground conductive pads 23 would be grounded to reduce the interference from external electromagnetic to the signal transmission between the signal terminal and the circuit board 20, and to prevent two adjacent differential signal pairs from interfering with the circuit board 20 during signal transmission. In this way, the electromagnetic shielding performance between the circuit board 20 and the electrical connector 1 can be improved, performing excellent signal transmission between the circuit board 20 and the electrical connector 1.
In this embodiment, the first conductive connecting pad 24 comprises a first connecting body 241 and two second connecting bodies 242. The first connecting body 241 extends along the second direction Y, and the two second connecting bodies 242 are respectively disposed at two opposite ends of the two first connecting bodies 241 in the second direction Y. The two second connecting bodies 242 extend along the first direction X and are respectively connected with the corresponding shielding ground conductive pad 23. In this embodiment, two adjacent signal conductive pads 22 are disposed between the two adjacent ground conductive pads 21, the first conductive connecting pad 24, and the shielding ground conductive pad 23 to increase the range that the two adjacent ground conductive pads 21, the first conductive connecting pad 24, and the shielding ground conductive pad 23 surround the two adjacent signal conductive pads 22. In this way, the electromagnetic shielding between the electrical connector and the circuit board 20 can be improved, performing excellent signal transmission between the circuit board 20 and the electrical connector. In this embodiment, the plurality of first conductive connecting pads 24 are connected in series. Thus, each of the second connecting bodies 242 of each of the first conductive connecting pads 24 is connected with the second connecting body 242 of the adjacent first conductive connecting pad 24. The plurality of first connecting bodies 241 are interconnected.
In one embodiment, referring to
In summary, embodiments of the present disclosure provide a terminal assembly and an electrical connector. By increasing the plurality of ground elastic pieces to be disposed on the second electromagnetic shielding member, the plurality of ground elastic pieces can be respectively connected with the ground terminals of a mating connector to avoid crosstalk among the plurality of signal terminals transmitting signals between the electrical connector and the mating connector. Thus, the signal transmission performance of electrical connectors can be effectively improved.
It is to be understood that the term “comprises”, “comprising”, or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device of a series of elements not only comprise those elements but further comprises other elements that are not explicitly listed, or elements that are inherent to such a process, method, article, or device. An element defined by the phrase “comprising a . . . ” does not exclude the presence of the same element in the process, method, article, or device that comprises the element.
Although the present disclosure has been explained in relation to its preferred embodiment, it does not intend to limit the present disclosure. It will be apparent to those skilled in the art having regard to this present disclosure that other modifications of the exemplary embodiments beyond those embodiments specifically described here may be made without departing from the spirit of the disclosure. Accordingly, such modifications are considered within the scope of the disclosure as limited solely by the appended claims.
Number | Date | Country | Kind |
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202011073423.8 | Oct 2020 | CN | national |