Patent Grant
10468829
Electrical connectors include dielectric or electrically insulative connector housings, and a plurality of electrical contacts supported by the housing. The electrical contacts define mating ends that are configured to mate with a complementary electrical connector. The mounting ends are configured to be mounted to a complementary electrical component. In some applications, the mounting ends are configured to be placed in communication with conductive cables that include electrical signal conductors and drain wires. Operation of the electrical connector can produce unwanted noise at certain operating frequencies. It is desirable to provide an electrical connector that substantially reduces the noise at a desired operating frequency of the electrical connector.
In accordance with one example, an electrical connector includes an electrically insulative connector housing, a plurality electrical signal contacts supported by the connector housing, and a plurality of ground contacts supported by the connector housing. Each of the signal contacts has a mating end and a mounting end, and each of the ground contacts has a mating end and a mounting end. The electrical connector defines a plurality of columns that are spaced from each other along a lateral direction and each includes the mating ends of a plurality of the signal contacts and the mating ends of a plurality of ground contacts. The electrical connector can further include an electrically conductive ground shield that is disposed between a first one of the columns and a second one of the columns with respect to the lateral direction. The ground shield can have a shield body that defines a first side and a second side opposite the first side along the lateral direction. The ground shield can include a plurality of contact members that extend out with respect to the shield body and are in contact with a respective at least two of the ground contacts, respectively, of the first one of the columns. The shield body can face at least one of the signal contacts of the first one of the columns and can be spaced along the lateral direction from the at least one of the signal contacts of the first one of the columns so as to define a gap therebetween.
The foregoing summary, as well as the following detailed description of example embodiments of the application, will be better understood when read in conjunction with the appended drawings, in which there is shown in the drawings example embodiments for the purposes of illustration. It should be understood, however, that the application is not limited to the precise arrangements and instrumentalities shown. In the drawings:
For convenience, the same or equivalent elements in the various embodiments illustrated in the drawings have been identified with the same reference numerals. Referring initially to
The first and second electrical connectors 100 and 300 can be configured to be mated with each other so as to establish an electrical connection between the first and second electrical connectors 100 and 300, and thus between the first and complementary electrical connector assemblies 22 and 24, respectively. The first electrical connector 100 can be configured to be mounted to the plurality of electrical cables 200 so as to place the first electrical connector 100 in electrical communication with the plurality of electrical cables 200. Similarly, the second electrical connector 300 can be configured to be mounted to the substrate 400 so as to establish an electrical connection between second electrical connector 300 and the substrate 400. Thus, the electrical cables 200 can be placed in electrical communication with the substrate 400 when the first and second electrical connectors 100 and 300 are mounted to the electrical cables 200 and the substrate 400, respectively, and mated to each other.
The first electrical connector assembly 22 can be referred to as an electrical cable assembly, including the first electrical connector 100 that can be referred to as a cable connector configured to be mounted to the plurality of electrical cables 200 so as to place the first electrical connector 100 in electrical communication with each of the plurality of electrical cables 200. The first electrical connector 100 can include a dielectric or electrically insulative connector housing 106 and a plurality of electrical contacts 150 that are supported by the connector housing 106. The plurality of electrical contacts 150 can include a plurality of signal contacts 152 and a plurality of ground contacts 154.
Referring now to
In accordance with the illustrated embodiment, the first electrical connector 100 is constructed as a vertical electrical connector. In particular, the connector housing 106 defines a mating interface 102 that is configured to engage a complementary mating interface of the second electrical connector 300 when the first and second electrical connectors 100 and 300 mate with each other. The connector housing 106 further defines a mounting interface 104 that is configured to engage the electrical cables 200 when the first electrical connector 100 is mounted to the electrical cables 200. The mating interface 102 can be oriented parallel to the mounting interface 104. Further, the electrical contacts 150 include electrical signal contacts 152 and ground contacts 154.
The electrical signal contacts 152 define respective mating ends 156 and mounting ends 158 opposite the mating ends 156. The mating ends 156 can be disposed proximate to the mating interface 102, and the mounting ends 158 can be disposed proximate to the mounting interface 104. The mating ends 156 are configured to mate with complementary mating ends of electrical signal contacts of the second electrical connector 300, and respective mounting ends 158 that are configured to be placed in physical and electrical contact with, for instance mounted to, respective signal conductors 202 of the electrical cables 200. The mating ends 156 are oriented parallel to the mounting ends 158, such that the electrical signal contacts 152 can be referred to as vertical contacts. Alternatively, the first electrical connector 100 can be configured as a right-angle electrical connector whereby the mating interface 102 and the mounting interface 104 are oriented perpendicular with respect to each other, and the mating ends 156 and the mounting ends 158 are oriented perpendicular to each other.
The electrical ground contacts 154 define respective ground mating ends 172, respective ground mounting ends 174 opposite the ground mating ends 172, and respective intermediate portions 173 that extend from the respective ground mating ends 172 to the respective ground mounting ends 174. The ground mating ends 172 are spaced from the ground mounting ends 174 in the forward direction. When the connector 100 includes the leadframe assemblies described above, the ground mating ends 172 can extend out from the leadframe housing 132 in the forward direction, and can be disposed proximate to the mating interface 102. The ground mounting ends 174 can be disposed proximate to the mounting interface 104. At least one or more up to all of the ground contacts 154 can define an opening 188 that extends therethrough along the lateral direction. Thus, the opening 188 extends from one of the broadsides to the opposed broadside. In particular, the opening 188 extends through the intermediate portion at a location proximate to the ground mating end 172. That is, the opening 188 is disposed closer to the ground mating end 172 than to the ground mounting end 174. The openings 188 can be disposed within the footprint of the leadframe housing 132. Thus, the openings 188 can be aligned with the leadframe housing 132 along the lateral direction A. The openings 188 can be round, such as cylindrical, though it should be appreciated that the openings can be sized and shaped in any manner desired. As will be described in more detail below, the electrical connector 100 includes a plurality of ground shields 177 having projections 183 that are configured to be inserted into respective ones of the openings 188 so as to attach each of the ground shields 177 to respective ground contacts 154 that lie in a common one of the columns.
The ground mating ends 172 and the mating ends 156 of the electrical signal contacts 152 of each leadframe assembly 130 can be spaced from each other along a transverse direction T that is perpendicular to the longitudinal direction L. It can be said that the mating ends 156 and the ground mating ends 172 of each leadframe assembly 130 are aligned with each other along a column. The columns are oriented along the transverse direction T. Because the mating ends 156 and the ground mating ends 172 are aligned along respective columns, it can thus be said that the columns include respective ones of the signal contacts 152 and respective ones of the ground contacts 154. Each of the columns can be defined by the transverse direction T and the longitudinal direction L, and can be spaced from each other along the lateral direction A.
The leadframe assemblies 130 are spaced from each other along a lateral direction A that is perpendicular to each of the longitudinal direction L and the transverse direction T. The lateral direction A can define a plurality of rows. The mating ends 156 and the ground mating ends 172 can be further aligned with each other along the transverse direction T. The ground mating ends 172 are configured to mate with complementary mating ends of ground contacts of the second electrical connector 300. The ground mounting ends 174 are configured to be placed in physical and electrical contact with at least one drain wire 208 of the electrical cables 200. The ground mating ends 172 are oriented parallel to the ground mounting ends 174, such that the ground contacts 154 can be referred to as vertical contacts. Alternatively, the first electrical connector 100 can be configured as a right-angle electrical connector whereby the ground mating ends 172 and the ground mounting ends 174 are oriented perpendicular to each other.
The first electrical connector 100 can include at least one ground commoning member 153 that paces respective ones up to all of the ground contacts 154 that are disposed in a common one of the columns in electrical communication with each other. Otherwise stated, respective ones up to all of the ground contacts 154 that are disposed in a common one of the columns are electrically commoned together. When the ground contacts 154 are included in respective ones of the leadframe assemblies 130, respective ones or more up to all of the ground contacts 154 of each leadframe assembly 130 are placed in electrical communication with each other. For instance, the ground commoning member 153 can include an electrically conductive cross-member 155 that extends along the transverse direction T and is in electrical communication with each of the ground contacts 154 that are placed in electrical communication with each other. In one example, the leadframe assemblies 130 can include a respective one of the ground commoning member 153. Alternatively, the ground commoning member 153 can be separate from the leadframe assemblies 130. In one example, the cross-member 155 can attach to the ground mounting ends 174, though it should be appreciated that the cross-member 155 can attach to the ground contacts 154 at any suitable location as desired. Alternatively, the cross-member can be spaced from the ground contacts 154, and the ground commoning member 153 can include a plurality of arms that extend from the cross member 155 to respective ones of the ground contacts 154. The ground commoning member 153 can be monolithic with the ground contacts 154. Alternatively, the cross member 155 can be separate from and attached to the ground contacts 154.
The leadframe housings 132 can be overmolded onto the respective ones of the electrical signal contacts 152 and ground contacts 154 so as to define an insert molded leadframe assembly (IMLA). Alternatively, respective ones of the electrical signal contacts 152 and ground contacts 154 can be stitched into the leadframe housing 132 or otherwise supported by the leadframe housing 132 as desired. As will become appreciated from the description below, the electrical connector 100 further includes at least one electrically conductive ground shield 177 that places the ground contacts 154 of at least one of the columns in electrical communication with each other. In particular, the ground shield 177 includes a shield body 181 having a first side 178 that is configured to physically and electrically contact at least one or more up to all of the ground contacts 154 of a first one of the columns, and a second side 179 that is opposite the first side 178 along the lateral direction A. When the columns are defined by leadframe respective assemblies 130, the ground shields 177 place the ground contacts 154 of a respective one of the leadframe assemblies 130 in electrical communication with each other. In particular, the first side 178 is configured to physically and electrically contact at least one or more up to all of the ground contacts 154 of a first one of the leadframe assemblies 130.
The electrical signal contacts 152 and ground contacts 154 can be arranged in any manner as desired. In one example, adjacent signal contacts 152 can define differential signal pairs or single ended signal contacts as desired. Differential signal pairs can be defined by signal contacts that are immediately adjacent each other such that no other electrical contacts 150 are disposed between and aligned with the immediately adjacent signal contacts 152. In one example, the electrical signal contacts 152 of each differential signal pair can be defined by the same leadframe assembly 130. Thus, the electrical signal contacts 152 of each differential signal pair can be spaced from each other along the respective column, and thus along the transverse direction T. At least one or more of the ground contacts 154 can be disposed between adjacent ones of the differential signal pairs. For instance, the ground contacts 154 can be disposed between adjacent pairs of differential signal pairs along the respective column. Alternatively, the first electrical connector 100 can be configured such that the electrical signal contacts 152 of each differential signal pair can be defined by the a pair of leadframe assemblies 130 that are immediately adjacent each other such that no other leadframe assemblies 130 are disposed therebetween. Thus, the electrical signal contacts 152 of each differential signal pair can be spaced from each other along the respective row, and thus along the lateral direction A.
The electrical connector 100 can be configured such that the electrical contacts 150 of each of the columns is staggered along the transverse direction T with respect to the electrical contacts 150 of immediately adjacent ones of the columns. Thus, the columns includes at least one electrical signal contact 152 that is not fully aligned with any of the electrical signal contacts 152 of an immediately adjacent one of the columns.
Referring also to
The shield body 181, and thus the ground shield 177, can be configured as a plate. The shield body 181 can define a first side 178 and a second side 179 that is opposite the first side along the lateral direction A. The shield 177 includes at least one contact member 180 that extends out from the shield body 181 at the first side 178, such as a plurality of contact members 180. The contact members 180 of the ground shield can be spaced from each other along the transverse direction T. The first side 178 of the shield body 181 is recessed with respect to the contact members 180 along the lateral direction A. Otherwise stated, in one example, no part of the shield body 181 extends out with respect to the contact members 180 in a direction defined from the second side 179 toward the first side 178 along the lateral direction A. The contact members 180 can be elongate along the longitudinal direction L, or otherwise shape as desired. Each of the contact members 180 defines a contact member surface 180a, and the first side 178 of the shield body 181 defines a first outer surface 178a. The contact member surface 180a can be spaced from the first outer surface 178a along the lateral direction A. Thus, the contact members 180 can define a standoff from the first outer surface 178a. The contact members 180 are configured to contact the respective ground contacts 154 at the contact member surfaces 180a. The contact members 180 can extend out from the shield body 181. In particular, the contact members 180 can extend out from the first outer surface 178a. The first outer surface 178a can be recessed respect to the contact member surfaces 180a along the lateral direction A. Further, a portion of the first outer surface 178a extends between each of the contact members 180 along the transverse direction T. In one example, the contact member surfaces 180a and the first outer surface 178a can be parallel to each other.
The ground shield 177 is configured to be positioned between a first one of the columns and a second one of the columns of electrical contacts 150 that can each include signal contacts 152 and ground contacts 154 as described above. Each of the contact members 180 can be positioned to contact a respective at least one of the ground contacts 154 of the first one of the columns without contacting the signal contacts 152 of the first one of the columns. The contact members 180 are configured to contact at least a respective two of the ground contacts 154 so as to place the at least two of the ground contacts 154 in electrical communication with each other through the ground shield 177. The shield body 181 faces one or more up to all of the signal contacts 152 of the first one of the columns, but is spaced from the one or more up to all of the signal contacts 152 of the first one of the columns along the lateral direction A so as to define a gap therebetween. Further, the shield body 181 can face all of the electrical contacts 150 of the first one of the columns, and can be spaced along the lateral direction A from all of the signal contacts 152 of the first one of the columns so as to define a gap therebetween. Thus, the contact members 180 can be in contact with respective ones of the ground contacts 154 of the first one of the columns at respective contact locations 186. The contact locations 186 can be spaced from each other along the transverse direction T, as the ground contacts 154 of the first one of the columns are spaced from each other along the transverse direction T.
The second side 179 can be aligned with at least one or more up to all of the signal contacts 152 of the second one of the columns along the lateral direction A. The second side 179 can define a second outer surface that faces at least one or more up to all of the electrical contacts 150 of the second one of the columns. Thus, the ground shield 177 can be configured such that the first outer surface 178a is disposed between the contact member surfaces 180a and the second outer surface with respect to the lateral direction A. The second outer surface can face opposite the first outer surface 178a and the contact member surfaces 180a. The second outer surface can be spaced from each of the electrical contacts 150 of the second one of the columns along the lateral direction A so as to define a gap therebetween. Thus, the first side 178 faces and is spaced from a plurality of the signal contacts 152 of the first one of the columns to define a gap therebetween, and the second side 179 faces and is spaced from a plurality of the signal contacts 152 of the second one of the columns to define a gap therebetween. The gap extends along the lateral direction A. For instance, the first side 178 can face and be spaced from all of the signal contacts 152 of the first one of the columns, and the second side 179 can face and be spaced from all of the electrical contacts 150 of the second one of the columns with respect to the lateral direction A. The second outer surface can be parallel to each of the contact member surface 180a and the first outer surface 178a. Accordingly, the ground shield 177 is electrically isolated from all of the signal contacts 152 of the first and second ones of the columns.
As described above, the ground shield 177 can include a plurality of contact members 180 that are configured to physically and electrically contact respective ones of the ground contacts 154 of the first one of the columns. One or more up to all of the contact members 180, and thus the ground shield 177, can further include a plurality of projections 183. The projections 183 can extend out from the contact member surface 180a of the contact members 180 in a direction away from the second side 179. In this regard, the contact members 180 can be referred to as stand offs from which the projections 183 extend. The projections 183 are configured to be received in respective openings 188 of the ground contacts 154. In one example, the contact members 180 are configured to physically and electrically contact respective ones of the ground contacts 154 of the first one of the columns at a location proximate to their respective ground mating ends 172, thereby placing the ground contacts 154 of the first one of the columns in electrical communication with each other through the ground shield 177.
The projections 183 are configured to extend into respective ones of the openings 188 when the contact member surfaces 180a abut the corresponding ones of the ground contacts 154. Thus, the ground shield 177 can contact the ground contacts 154 both at the projections 183 and at the contact member surfaces 180a. Alternatively, the ground shied 177 can make contact with the ground contacts 154 only at the projections 183. For instance, the projections 183 can be press-fit into the respective ones of the openings 188. Thus, one or both of the projections 183 and the openings 188 can be tapered such that the projections are configured to be press-fit into the respective ground contacts 154 at the corresponding openings 188. In this regard, the contact member surfaces 180a are spaced from the ground contacts 154 when the projections 183 are press-fit into the ground contacts 154. Alternatively, contact members 180 can be devoid of the contact member surfaces 180a, such that the projections 183 extend directly out from the first side 178, and in particular out from the first outer surface 178a. Whether each of the contact members 180 define a contact member surface 180a or not and whether the projections 183 extend out from the contact member surfaces 180 or not, the projection 183 can be said to extend out with respect to the respective first side 178, and in particular with respect to the first outer surface 178a.
The projections 183 can extend out with respect to the first outer surface 178a along the lateral direction A. The projections 183 can be narrower than the contact member surfaces 180a along the transverse direction T. Further, the projections 183 are narrower than the contact member surfaces 180a along the longitudinal direction L. Thus, one or more up to all of the projections 183 can be fully contained between first and second external surfaces of the shield body 181 that are spaced from each other along the longitudinal direction L. In one example, the projections 183 are rigid, and thus are not configured to flex as they contact the respective ground contacts 154. The projections 183 can all be spaced from each other along the transverse direction T. Each of the projections 183 are configured to be inserted into respective one of the openings 188 of the ground contacts 154 so as to place the ground shield 177 in physical and electrical contact with the ground contacts 154 of the one of the columns. The projections 183 can have an external surface 187 that is spaced from each of the first outer surface and the contact member surface 180a. A distance from the first outer surface 178a to the external surface 187 along the lateral direction A is greater than the thickness of the ground contacts 154 along the lateral direction A. A distance from the contact member surface 180a to the external surface 187 along the lateral direction A is greater than the thickness of the ground contacts 154 along the lateral direction A. Accordingly, the projections 183 can be received in the openings 188.
In particular, each of the projections 183 can be inserted into respective one of the openings 188 until the respective contact member surface 180a contacts the corresponding ground contact 154. The contact member surface 180a can contact the ground contacts 154 at their intermediate portions 173. In this regard, it should be appreciated that the contact member surfaces 180a are aligned with respective ones of the ground contacts 154, and the portion of the first outer surface 178a that extends between the contact members 180 is aligned with respective ones of the signal contacts 152 that are disposed between the ground contacts 154.
In one example, the projections 183 can alternatively extend from the shield body 181. For instance, the projections 183 can extend directly from the first outer surface 178a. Thus, the ground shield 177 can be devoid of the contact members 180. Further, the projections 183 can be tapered inwardly as they extend out from the shield body 181. Thus, the projections 183 can be press-fit in the respective ones of the openings 188.
The projections 183 can be sized and shaped in any suitable manner as desired. For instance the projections 183 can extend from the respective contact member surface 180a and terminate at respective exterior surfaces 187. The exterior surfaces 187 can face the lateral direction A. The exterior surfaces 187 can be parallel to each other. The exterior surfaces 187 can be planar along a respective plane that is defined by the longitudinal direction L and the transverse direction T. Thus, the exterior surfaces 187 can be parallel to each of the first and second outer surfaces. Each of the projections 183 defines an outer perimeter 183a that extends between the respective contact member surface 180a and the external surface 187. Thus, the outer perimeter 183a can lie on a plane that is 1) defined by the transverse direction T and the longitudinal direction L, and 2) disposed between the respective contact member surface 180a and the exterior surface 187. In one example, the projections 183 are round. Thus, the outer perimeters 183a can be round in the plane. For instance, the projections 183 can be cylindrical. Thus, the outer perimeters 183a can be circular in the plane. As illustrated in
Each of the projections 183 can extend out with respect to the first outer surface 178a, for instance from the respective contact member surface 180a, to the external surface 187 along a respective central axis 184. The central axis 184 can thus be oriented normal to the first outer surface 178a. Further, the central axis 178a can be oriented to the contact member surface 180a. When the projections 183 are cylindrical, the central axes can define the central axis of the respective cylinder. In one example, the central axes 184 can be oriented along the lateral direction A. As illustrated in
Alternatively, referring now to
In one example, each of the contact locations 186 is offset along the longitudinal direction L with all other immediately adjacent ones of the contact locations 186 that are immediately adjacent with respect to the transverse direction T. Thus, each of the projections 183 is offset along the longitudinal direction L with respect to all other immediately adjacent ones of the projections 183 that are immediately adjacent with respect to the transverse direction T. The term “immediately adjacent” in this context means that no other projections 183 are disposed between each of the projections 183 and the immediately adjacent projections 183. It should thus be appreciated that the contact locations 186 are positioned at least at one of a first position with respect to the longitudinal direction L and a second position with respect to the longitudinal direction L. The first and second positions can be offset from each other an offset distance of at least approximately 0.2 mm along the longitudinal direction L. The contact members 180 can contact the respective ones of the ground contacts 154 of the first one of the columns at the respective contact locations 186 that can alternate along the transverse direction T between the first position and the second position. The first and second positions can be offset by the offset distance of at least approximately 0.2 mm as described below. In one example, the first and second positions of the contact locations 186 can be defined by the forward ends 180c of the respective contact members 180. In one example, the first and second positions of the contact locations 186 can be defined by the respective central axes 184. In another example, the first and second positions of the contact locations 186 can be defined by the forward end of the perimeters 183a of the projections 183.
Further, the projections 183 can be spaced from the forward end 180c of the respective contact members 180 the same distance in the longitudinal direction L. Accordingly, with continuing reference to
The distance of the offset along the longitudinal direction L can be any suitable distance as desired. For instance, it has been discovered that the distance between the ground commoning and the mating interface of the connector 100 is directly related to the frequency of a crosstalk resonance using a half wave equation. When the distance is consistent between all differential signal pairs, the resonant frequency is also consistent for all aggressors that inject noise onto a victim differential signal pair. By changing the location of the ground commoning to create an offset distance of as little as approximately 0.2 mm (approximately 0.002 inch, or approximately 0.05 mm), the resonant frequency of all aggressors will shift enough so that they are not adding up causing a large crosstalk spike in power sum crosstalk on the victim differential signal pair. This can result in significant performance increases of the electrical connector 100. Accordingly, the offset of at least one of the contact members 180 with respect to at least one other of the contact members 180 along the longitudinal direction L can be at least approximately 0.2 mm. “Approximately” in this context refers to a distance suitable to cause the resonant frequency to shift as described above. Similarly, the projections 183 of adjacent contact members 180 can be offset from each other along the longitudinal direction L a distance of at least approximately 0.2 mm.
As described above, the electrical connector 100 can include a plurality of ground shields 177 that are disposed between adjacent ones of the columns so as to contact the ground contacts of one of the columns as described above. In particular, each of the ground shields 177 include projections 183 that are inserted into respective openings 188 of the ground contacts 154 of a corresponding one of the plurality of columns. Thus, a second ground shield 177 can place the ground contacts of the second one of the columns in electrical communication with each other as described herein. It should be appreciated that the ground shields 177 can be spaced from each other along the lateral direction A. Alternatively, the ground shields 177 can contact each other so as to place the electrical ground contacts 154 of each of the columns in electrical communication with each other. For instance, projections of the ground shields can contact the second outer surface of an adjacent one of the ground shields 177. For instance, the external surfaces 187 can contact the second outer surface of the adjacent one of the ground shields 177. It should thus be appreciated that the ground shields 177 can place separate ground contacts 154 of a select column of contacts 150 in electrical communication with each other, and can also place the ground contacts of the select column in electrical communication with one or more up to all of the ground contacts of a second column. The second column can be disposed adjacent the select column, such that no other columns of electrical contacts 150 are disposed between the first and second columns.
It should be appreciated that a method can be provided for shifting a resonance frequency of the electrical connector 100. The method can include the step of placing the at electrically conductive ground shield 177 between first and second columns of electrical contacts 150 of the electrical connector 100 with respect to the lateral direction A. As described above, each column can include a respective plurality of electrical signal contacts 152 and ground contacts 154 spaced from each other along the transverse direction T. The method can include the step of contacting ones of the ground contacts 154 of the first column at respective contact locations 186. One of the contact locations 186 can be offset with respect to at least one other of the contact locations 186 along the longitudinal direction L. After the contacting step, the ground shield 177 can be spaced from the signal contacts 152 of each of the first and second columns to define respective gapes therebetween. The contacting step can include inserting each of a plurality of the projections 183 of the ground shield 177 into respective openings 188 of the ground contacts 154.
As illustrated in
With continuing reference to
The first and second electrical signal conductors 202a and 202b can be mounted to respective ones of the electrical signal contacts 152 of the first electrical connector 100. Similarly, the first and second drain wires 208a and 208b can be mounted to respective ones of the electrical ground contacts 154 of the first electrical connector 100. For instance, respective exposed ends of the conductors 202 can be exposed and configured to attach to respective mounting ends of signal contacts, and a portion of the drain wires can be exposed and configured to attach to respective mounting ends of ground contacts.
In one example, the first and second electrical signal conductors 202a and 202b can be mounted to respective ones of the electrical signal contacts 152 of the first electrical connector 100. For instance, each of the first and second electrical signal conductors 202a and 202b can define respective exposed ends 214 that extend out from the respective first and second insulative layers 204a and 204b (see
Further, the first and second drain wires 208a and 208b can be mounted to respective ones of the electrical ground contacts 154 of the first electrical connector 100. For instance, each of the first and second drain wires 208a and 208b can define respective exposed ends 215 (see
It should be appreciated that the first drain wire 208a of a first one of the electrical cables 200 can be mounted to the same one of the electrical ground contacts 154 that the second drain wire 208b of a second electrical cable 200 is mounted to. Thus, it can be said that the first drain wire 208a of the first one of the electrical cables 200 and the second drain wire 208b of the second one of the electrical cables 200 can be mounted to a common one of the ground contacts 154. The first and second cables 200 can be disposed immediately adjacent each other along the transverse direction T. Otherwise stated, first and second adjacent ones of the electrical cables 200 can include a drain wire that is mounted to a common one of the ground contacts 154, particularly to the ground mounting end 174 of the common one of the ground contacts 154.
The first electrical connector assembly 22 can further include an outermost electrical cable 201 that can be configured as a single conductor 202, which can be a widow conductor that can be configured to be a single-ended signal conductor, a low speed or low frequency signal conductor, a power conductor, a ground conductor, or some other utility conductor that does not define a differential pair.
Referring again to
Referring now also to
Further, the electrical connector 100 can include a second leadframe assembly 130b that includes an electrically insulative second leadframe housing 132b, second ones of the signal contacts 152 of the second one of the columns supported by the second leadframe housing 132b, and second one of the ground contacts 154 of the second one of the columns supported by the second leadframe housing 132b. In this regard, it should be appreciated that the second leadframe assembly 130b includes the mating ends 156 of the second ones of the signal contacts 152 and the ground mating ends 172 of the second ones of the ground contacts 154.
In one example, the mating ends 156 of the plurality of the signal contacts 152 and the ground mating ends 172 of the plurality of ground contacts 154 of the first one of the columns are arranged in a pattern in a first transverse direction that is oriented along the transverse direction T. The mating ends 156 of the plurality of the signal contacts 152 and the ground mating ends 172 of the plurality of ground contacts 154 of the second one of the columns are arranged in the pattern in a second transverse direction that is opposite the first transverse direction and oriented along the transverse direction T. Thus, it can be said that the ground contacts 154 and signal contacts 152 of the first leadframe assembly 130a are arranged in a pattern in a first direction, and the ground contacts 154 and signal contacts 152 of the second leadframe assembly 130b are arranged in the pattern in a second direction that is opposite the first direction when the first and second leadframe assemblies 130a and 130b are supported by the connector housing 106.
The electrical connector 100 can include a first electrically conductive ground shield 177a that is supported by the first leadframe housing 132a. The first ground shield 177a includes a first shield body 181a that defines a first side and a second side opposite the first side along the lateral direction. The first ground shield 177a includes a first plurality of contact members 280a that are in contact with a respective at least two of the ground contacts 154 of the first leadframe assembly 130a in the manner described above. Further, the first shield body 181a faces at least one of the signal contacts of the first leadframe assembly 130a and is spaced along the lateral direction A from the at least one of the signal contacts of the first leadframe assembly 130a so as to define a gap therebetween along the lateral direction.
The first leadframe housing 132a can define a first frame 159a having a first opening 160a that is open to the signal contacts and ground contacts of the first leadframe assembly 130. The first ground shield 177a can be seated in the first opening 160a of the first frame 159a. The first opening 160a can be enclosed by the first frame 159a in a plane that is defined by the transverse direction T and the longitudinal direction L.
Similarly, the electrical connector 100 can include a second electrically conductive ground shield 177b supported by the second leadframe housing 132b. The second electrically conductive ground shield 177b has a second shield body 181b that defines a first side and a second side opposite the first side along the lateral direction A. The second ground shield 177b includes a second plurality of contact members 280b that extend out with respect to the second shield body 181b and are in contact with a respective at least two of the ground contacts 154 of the second leadframe assembly 130b, and the second shield body 181b faces at least one of the signal contacts of the second leadframe assembly 130b and is spaced along the lateral direction A from the at least one of the signal contacts of the second leadframe assembly 130b so as to define a gap therebetween along the lateral direction A. The first and second contact members 280a and 280b can be constructed as described above with respect to contact members 180, unless otherwise indicated herein.
The second leadframe housing 132b can define a second frame 159b having a second opening 160b that is open to the signal contacts and ground contacts of the second leadframe assembly 130b. The second ground shield 177b can be seated in the second opening 160b of the second frame 159b. The second opening 160b can be enclosed by the second frame 159b in a plane that is defined by the transverse direction T and the longitudinal direction L.
The first ground shield 177a can be disposed between the first one of the columns and the second one of the columns with respect to the lateral direction A. For instance, the first ground shield 177a can be disposed between the first and second leadframe assemblies 130a and 130b with respect to the lateral direction A. The second ground shield 130b can be disposed between the second one of the columns and a third one of the columns. The third one of the columns can be positioned such that the second one of the columns is disposed between the first one of the columns and the third one of the columns with respect to the lateral direction A. The third one of the columns includes respective ones of the plurality of signal contacts and respective ones of the plurality of ground contacts.
The first frame 159a defines an outer surface 161a that is spaced from the signal contacts and ground contacts of the first leadframe assembly 130a a first frame distance along the lateral direction A. The second side of the first shield body 181a can be substantially flush with the outer surface 161a of the first frame 159a. Alternatively, the second side of the first shield body 181a can project out with respect to the outer surface 161a of the first frame 159a. Alternatively still, the second side of the first shield body 181a can be recessed with respect to the outer surface 161a of the first frame 159a. The second frame 159b defines an outer surface 161b that is spaced from the signal contacts and ground contacts of the second leadframe assembly 130b a second frame distance along the lateral direction A that is less than the first frame distance.
The second side of the second shield body 181b can be substantially flush with the outer surface 161b of the second frame 159b. Alternatively, the second side of the second shield body 181b can project out with respect to the outer surface 161b of the second frame 159b. Alternatively still, the second side of the second shield body 181b can be recessed with respect to the outer surface 161b of the second frame 159b. The first ground shield 130a defines a first width from an outermost end of the first plurality of contact members 280a to the second side of the first shield body 181a along the lateral direction A. Similarly, the second ground shield 130b defines a second width from an outermost end of the second plurality of contact members 280a to the second side of the second shield body 181b along the lateral direction A. The first width is greater than the second width, such that the contact members 280a and 280b contact the corresponding ground contacts 154 of the first and second leadframe assemblies 130a and 130b, respectively. As described above, the contact members 280a and 280b can contact the respective ground contacts 154 at the ground mating ends 172. The first shield body 181a and the second shield body 181b can define the same thickness from the respective first side to the respective second side along the lateral direction A.
In one example, at least one or more up to all of the first plurality of contact members 280a can extend out from the first side of the first shield body 181a a first distance along the lateral direction A, and at least one or more up to all of the second plurality of contact members 280b can extend out from the first side of the second shield body 181b a distance less than the first distance.
As described above, the first plurality of contact members 280a can each define a first contact member surface that is parallel to the first outer surface of the first shield body 181a, and the first contact member surfaces can be spaced from the first outer surface of the first shield body 181a a first standoff distance along the lateral direction A. Each of the first plurality of contact members 280a can define respective first projections 283a that extend out with respect to the first contact member surface and contact respective ones of the ground contacts of the first leadframe assembly 130a in the manner described above. The ground contacts 154 of the first leadframe assembly 130a define respective first openings 188a extending therethrough along the lateral direction A, and the first projections 283a extend into respective ones of the first openings 188a so as to contact the ground contacts 154 of the first leadframe assembly 130a, thereby placing the contacts 154 of the first leadframe assembly 130 in electrical communication with each other through the first ground shield 177a. The first openings 188a can be round, and the first projections 283a can be round. The first openings 188a and the first projections 283a have substantially equal cross-sections such that the first projections 283a are in contact with the respective ground contacts 154 of the first leadframe assembly 130a about the respective perimeters of the projections 283a. In one example, the first openings 188a and the first projections 283a are cylindrical.
Further, the second plurality of contact members 280b can each define a second contact member surface that is parallel to the second outer surface of the second shield body 181b, and the second contact member surfaces can be spaced from the first outer surface of the second shield body 181b a second standoff distance along the lateral direction A that is less than the first standoff distance. Each of the second plurality of contact members can define respective second projections 283b that extend out with respect to the first contact member surface of the second shield body 181b and contact respective ones of the ground contacts of the second leadframe assembly 130b. The ground contacts 154 of the second leadframe assembly 130b define respective second openings 188b extending therethrough along the lateral direction A, and the second projections 283b extend into respective ones of the second openings 188b so as to contact the ground contacts 154 of the second leadframe assembly 130b, thereby placing the contacts 154 of the second leadframe assembly 130b in electrical communication with each other through the second ground shield 177b. The second openings 188b can be round, and the second projections 283b can be round. For instance, the second openings 188b and the second projections 283b can be cylindrical. The second openings 188b and the second projections 283b have substantially equal cross-sections such that the second projections 283b are in contact with the respective ground contacts 154 of the second leadframe assembly 130b about the respective perimeters of the second projections 283b. The first and second projections 280a and 280b can be constructed as described above with respect to projections 183 unless otherwise indicated herein.
With continuing reference to
As described above, whether each of the contact members 280a and 280b define respective contact member surfaces or not, and whether the projections 283a and 283b extend out from the respective contact member surfaces or not, the projection 283a and 283b can be said to extend out with respect to the first side 178 of the respective first and second shield bodies 181a and 181b, and in particular with respect to the first outer surface of the first and second shield bodies 181a and 181b, respectively. Thus, in one example, the first contact members 280a can extend out from the first shield body 181a along the lateral direction A. Similarly, the second contact members 280b can extend out from the second shield body 181b along the lateral direction A.
For instance, the first contact members 280a extend from the first side of the first shield body 181a in a direction away from the second side of the first shield body 181a. Similarly, the second contact members 280b extend from the first side of the second shield body 181b in a direction away from the second side of the second shield body 181b. As described above in one example, the first contact members 280a can define respective first projections 283a that extend out with respect to the respective first side of the first shield body 181a and contact respective ones of the ground contacts 154 of the first leadframe assembly 130a. Similarly, the second contact members 280b comprise respective second projections 283b that extend out with respect to the respective first side of the second shield body 181b, and contact respective ones of the ground contacts 154 of the second leadframe assembly 130b.
Each of the first contact members 280a can define a first contact member surface that is spaced from the first surface of the first shield body 181a along the lateral direction A. Similarly, each of the second contact members 280b can define a second contact member surface spaced from the first surface of the second shield body 181b along the lateral direction. The first projections 283a can extend out from respective ones of the first contact member surfaces. The second projections 283b can extend out from respective ones of the second contact member surfaces. Alternatively, as described above, the first projections 283a can extend out from the first outer surface of the first shield body 181a. Further, the first projections 283a can be configured to be press-fit into the first openings 188a. Similarly, the second projections 283b can extend out from the first outer surface of the second shield body 181b. Further, the second projections 283b can be configured to be press-fit into the second openings 188b. As described above, the first contact members 280a can be inline with each other along the lateral direction as illustrated in
The foregoing description is provided for the purpose of explanation and is not to be construed as limiting the invention. While various embodiments have been described with reference to preferred embodiments or preferred methods, it is understood that the words which have been used herein are words of description and illustration, rather than words of limitation. Furthermore, although the embodiments have been described herein with reference to particular structure, methods, and embodiments, the invention is not intended to be limited to the particulars disclosed herein. For instance, it should be appreciated that structure and methods described in association with one embodiment are equally applicable to all other embodiments described herein unless otherwise indicated. Those skilled in the relevant art, having the benefit of the teachings of this specification, may effect numerous modifications to the invention as described herein, and changes may be made without departing from the spirit and scope of the invention, for instance as set forth by the appended claims.
This application is a National Phase Entry of international PCT patent application No. PCT/US2016/065291, entitled “ELECTRICAL CONNECTOR HAVING ELECTRICALLY COMMONED GROUNDS,” filed on Dec. 7, 2016, which claims priority to and the benefit of U.S. Provisional Application Ser. No. 62/264,216, entitled “ELECTRICAL CONNECTOR HAVING ELECTRICALLY COMMONED GROUNDS,” filed on Dec. 7, 2015. The entire contents of these applications are incorporated herein by reference in their entirety.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/US2016/065291 | 12/7/2016 | WO | 00 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2017/100261 | 6/15/2017 | WO | A |
| Number | Name | Date | Kind |
|---|---|---|---|
| 5190473 | Mroczkowski et al. | Mar 1993 | A |
| 5281150 | Bundga et al. | Jan 1994 | A |
| 5480327 | Zola | Jan 1996 | A |
| 5961348 | Murphy | Oct 1999 | A |
| 6089916 | Kuo | Jul 2000 | A |
| 6817898 | Tanaka et al. | Nov 2004 | B2 |
| 7025634 | Swantner et al. | Apr 2006 | B1 |
| 7510439 | Gordon et al. | Mar 2009 | B2 |
| 8253021 | Adachi et al. | Aug 2012 | B2 |
| 8772636 | Yamaguchi et al. | Jul 2014 | B2 |
| 10109937 | Zerebilov et al. | Oct 2018 | B2 |
| 20010031579 | Fujino | Oct 2001 | A1 |
| 20020136519 | Tinucci | Sep 2002 | A1 |
| 20040127078 | Tondreault | Jul 2004 | A1 |
| 20040242066 | Ito et al. | Dec 2004 | A1 |
| 20070287332 | Gordon | Dec 2007 | A1 |
| 20090188716 | Nagase | Jul 2009 | A1 |
| 20130034977 | Cina | Feb 2013 | A1 |
| 20130130547 | Simpson | May 2013 | A1 |
| 20130149899 | Schroll | Jun 2013 | A1 |
| 20130188325 | Garman | Jul 2013 | A1 |
| 20130273781 | Buck | Oct 2013 | A1 |
| 20160268739 | Zerebilov | Sep 2016 | A1 |
| 20180358752 | Ellison | Dec 2018 | A1 |
| Number | Date | Country |
|---|---|---|
| 1168547 | Dec 1997 | CN |
| 101743667 | Jun 2010 | CN |
| 102142645 | Aug 2011 | CN |
| 202153592 | Feb 2012 | CN |
| 102969622 | Mar 2013 | CN |
| 103178408 | Jun 2013 | CN |
| 103378434 | Oct 2013 | CN |
| 103378495 | Oct 2013 | CN |
| 203242849 | Oct 2013 | CN |
| 104009303 | Aug 2014 | CN |
| 204179390 | Feb 2015 | CN |
| 105051978 | Nov 2015 | CN |
| 105612671 | May 2016 | CN |
| 0 997 756 | May 2000 | EP |
| 2 169 770 | Mar 2010 | EP |
| 2010-153191 | Jul 2010 | JP |
| 2014-229597 | Dec 2014 | JP |
| WO 2015061390 | Apr 2015 | WO |
| Entry |
|---|
| U.S. Appl. No. 15/031,359, filed Apr. 22, 2016, Zerebilov et al. |
| U.S. Appl. No. 16/060,188, filed Jun. 7, 2018, Ellison. |
| EP 14855318.3, Apr. 21, 2017, Extended European Search Report. |
| PCT/US2014/061681, Jan. 27, 2015, International Search Report and Written Opinion. |
| PCT/US2014/061681, May 6, 2016, International Preliminary Report on Patentability. |
| PCT/US2016/065271, Mar. 24, 2017, International Search Report and Written Opinion. |
| PCT/US2016/065271, Jun. 21, 2018, International Preliminary Report on Patentability. |
| Extended European Search Report for European Application No. 14855318.3 dated Apr. 21, 2017. |
| International Search Report and Written Opinion for International Application No. PCT/US2014/061681 dated Jan. 27, 2015. |
| International Preliminary Report on Patentability for International Application No. PCT/US2014/061681 dated May 6, 2016. |
| International Search Report and Written Opinion for International Application No. PCT/US2016/065271 dated Mar. 24, 2017. |
| International Preliminary Report on Patentability for International Application No. PCT/US2016/065271 dated Jun. 21, 2018. |
| Number | Date | Country | |
|---|---|---|---|
| 20180366880 A1 | Dec 2018 | US |
| Number | Date | Country | |
|---|---|---|---|
| 62264216 | Dec 2015 | US |
