Small pitch high-speed connectors as disclosed herein are used in high-speed data transfer applications and are configured for electrical connection with a printed circuit board and, more specifically, small-pitch high-speed connectors as disclosed are specially engineered having a hermaphroditic design with electrical terminals having redundant points of contact between one another so as to provide a highly reliable and robust electrical connection in high-speed data transfer applications in a manner that is resistant to vibration.
The use of connectors in applications calling for high-speed data transmission is known in the art, wherein such connectors are conventionally connected to a board such as a printed circuit board along one surface and are configured along another surface to accommodate an electrical connection with an external connector. In such conventional high speed connectors, the connection with the external connector is made via a pin-in-socket configuration, e.g., wherein the connector comprises one or more sockets or the like that are configured to receive a respective pin from the external connector therein, or vise versa where the connector comprises one or more pins that are configured to fit within one or more respective sockets of the external connector.
While such conventional connectors are cable of providing a high-speed data interconnection transmission platform between a board and an external connector, this requires the use of two distinct and separate parts, namely the board connector and the external connector, whereby, the separate parts must be made, acquired, and inventoried independently for use. As a result of such parts being configured differently, there is the possibility that the electrical connection made between the board connector and the external connector, e.g., through the respective electrical terminals, may not be optimally configured and/or aligned to provide a desired consistent contact profile/surface area between the terminals. In such high-speed data transmission applications, the presence of inconsistent contact profiles/surface areas between the plurality of electrical terminals that are interconnected introduces noise into the system that can interfere with the desired data transmission and downstream system operations. Additionally, the presence of such inconstant contact profile/surface area between the interconnecting electrical terminals may cause such interconnection to be vulnerable to vibration environments, where the presence of vibration may operate to loosen the electrical interconnection between the electrical terminals. Such vibration environments may also introduce unwanted noise into the system and/or may ultimately cause a disconnect between the electrical terminals and termination of the data transmission.
It is, therefore, desired that high-speed connectors be constructed in a manner that enables providing high-speed data transmission between connectors without the need for differently configured board connectors and external connectors. It is further desired that the high-speed connectors be configured such that the electrical terminals being interconnected for high-speed data transmission are identically configured so as to ensure that the contact profile/surface area between interconnected electrical terminals are identical. Thereby, operating to provide an improved degree of electrical performance when compared to conventional connectors. Still further, it is desired that the electrical terminals be configured in a manner that provides a robust interconnection with one another to ensure a secure electrical connection therebetween, thereby providing an improved degree of vibration resistance and increased effective service life when compared to conventional high-speed connectors.
High-speed connectors as disclosed herein have a hermaphroditic design to interconnect with an identical connector. Such connector comprises a housing formed from a dielectric material having a first interconnection feature at one location of the housing and a second interconnection feature at another location of the housing. In an example, the first and second interconnection features of the connector are configured to complement and engage with respective second and first interconnection features of an identical connector. In an example, the connector housing has a generally rectangular configuration, and the first and second interconnection features are located adjacent opposed longitudinal ends of the housing. In an example, the first interconnection feature is positioned at one end of the housing within a portion of a recessed channel, wherein the second interconnection feature is positioned at end of the housing opposite the first interconnection feature. The second interconnection feature is positioned outside of the recessed channel. The first interconnection feature includes a member extending outwardly from a floor of the recessed channel, and the second interconnection feature includes a cavity.
In an example, the connector housing includes opposed wall sections that define the recessed channel therein having depth defined between the channel floor and a channel opening. In an example, the connector housing includes a first section and a second section, wherein the first section is defined by a first pair of opposed walls and the second section is defined by a second pair of opposed walls that are separate from the first pair of opposed walls. In an example, the first pair of opposed walls are positioned a greater distance apart from one another than the second pair of opposed walls so that the housing second section of the identical connector fits within a housing first section of the identical connector. A first pair of shields are disposed along an inside surface of the first pair of opposed walls, and a second pair of shields are disposed along an outside surface of the second pair of opposed walls. The first and second pair of shields of the connector are connected with respective second and first pair of shields of the identical connector.
The connector comprises a plurality of electrical terminals disposed within the channel and extending a length from the floor towards the channel opening. In an example, the plurality of electrical terminals is interposed within the channel between the housing first and second interconnection features. In an example, the electrical terminals are oriented within the channel in one or more rows, and wherein the floor adjacent each electrical terminal includes a raised section that extends outwardly a distance from the floor along a partial section of the electrical terminal to thereby isolate such partial section from a partial section of an adjacent electrical terminal in the same row.
In an example, each electrical terminal includes a contact section disposed in the channel that is configured to provide a point of contact between two interconnected electrical terminals when the connector is combined with the identical connector. In an example, the electrical terminals are configured to provide two or more points of contact between two interconnected electrical terminals. In an example, each electrical terminal contact section comprises a planar section extending from the floor into the channel and an angled section extending from the planar section and forming an end of the electrical terminal. The angled sections of opposed electrical terminals are in connect with the planar sections of each other opposed electrical terminal to provide two points of mechanical and electrical contact between opposed interconnected electrical terminals. In an example, each electrical terminal contact section comprises a planar section adjacent the floor that extends axially and form a pair of angled sections extending therefrom. The angled sections of two combined opposed electrical terminals from two connectors are each in contact with planar sections of the respective opposed electrical terminal to thereby provide four points of contact between opposed interconnected electrical contacts.
Small pitch high-speed connectors as disclosed herein will now be described by way of example with reference to the accompanying figures, of which:
Embodiments of high-speed connectors as disclosed herein will be described hereinafter in detail with reference to the attached drawings, wherein like reference numerals refer to the like elements. High-speed connectors as disclosed herein may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein; rather, these embodiments are provided so that the disclosure will be thorough and complete, and will fully convey the concept of high-speed connectors to those skilled in the art.
High-speed connectors as disclosed herein are generally configured in the form of a single hermaphroditic part that when duplicated is capable of mating with itself to provide interconnection between electrical terminals to facilitate high-speed data transmission between the connectors. In an example, the connector comprises a housing having first and second sections that are configured to mate and fit together with respective second and first sections of a duplicate connector. The housing includes a plurality of electrical terminals that are specially configured to interconnect with identical electrical terminals of a duplicate connector to provide a consistent contact profile/surface area, and optionally the electrical terminals are engineered to provide more than one point of contact between interconnecting electrical terminals, thereby adding an improved degree of contact robustness for use in vibration environments. The ability to provide a high-speed electrical interconnection between duplicate identical connectors reduces manufacturing costs and makes it easier on the end user by avoiding having to track and use a connecting member having a second part number.
A first interconnection feature 24 is disposed in the housing first section 14 adjacent the first end 16 and extends within a recessed channel 26. The first interconnection feature 24 is configured to complement and fit together with a second interconnection feature 28 of a duplicate connector that is disposed adjacent the second end 22. In an example, the first interconnection feature 24 is in the form of a T-shaped element that projects upwardly from a floor 30 of the channel and that comprises a stem portion 32 extending outwardly from the first end 16 a distance to opposed outward facing portions 34. In an example, the first interconnection feature 24 extends upwardly a distance from the floor 30 that is slightly more than a first pair of opposed side walls 36.
A portion of the recessed channel 26 in the housing first section 14 surrounding the first interconnection feature 24 is open and configured to accommodate placement of the second interconnection feature 28 of a duplicate connector therein. In an example, the second interconnection feature 28 extends outwardly from the second end 22 and includes opposed side walls 38 that form an open cavity 40, wherein the opposed walls 38 include end sections 42 that project inwardly towards each other a partial distance. Configured in this manner, the second interconnection feature 28 open cavity 40 is configured to accommodate the first interconnection feature outward facing portions 34 therein, and the second interconnection feature end sections 42 are configured to accommodate placement of the first interconnection feature stem portion 32 therebetween.
While example connector first and second interconnection features have been disclosed and illustrated comprising certain complementing surface configurations, it is to be understood that the first and second interconnecting features may be configured differently while functioning to provide a desired interconnecting mechanical fitment between duplicate connectors, and doing so at a location that is remote from electrical terminals 44 that are disposed within the channel 26, thereby avoiding the possibility of damaging the electrical terminals during the step of combining the duplicate connectors together. Thus, all such alternative housing first and second interconnection feature configurations are intended to be within the scope of connectors as disclosed herein.
In an example, a plurality of electrical terminals 44 are disposed within the housing first and second sections 14 and 20 within the channel 26. In an example, the electrical terminals 44 may be arranged in one or more rows that extend longitudinally within the channel, and in one or more columns extending between the one or more rows. It is understood that the number and placement of electrical terminals within the channel can and will vary depending on the particular end-use application, and all such variations are within the scope of the connector as disclosed herein. The example connector illustrated comprises a grid array of electrical terminals arranged comprising three rows and seventeen columns for a total of fifty-one electrical terminals. In an example, the electrical terminals in each row are placed approximately the same distance from adjacent electrical terminals in the same row, and the electrical terminals in each column are placed the approximate same distance from adjacent electrical terminals in the same column. Such precise placement of the electrical terminals is useful to ensure desired interconnecting engagement and contact when duplicate connectors are connected with one another.
The housing first section 14 first pair of opposed side walls 36 surrounding the first interconnection feature extends from the housing first end 16 a distance to an inwardly directed shoulder section 46. The first pair of side walls 36 are positioned a sufficient distance apart from one another to accommodate placement of a duplicate connector second interconnection feature opposed walls 38 therein. In an example, the shoulder section 46 is positioned a sufficient distance from the first end 16 to longitudinally trap the second interconnection feature therebetween. In an example, the shoulder section 46 is positioned such that the second interconnection feature, while interconnecting with the first interconnection feature, does not come into contact with the electrical terminals 44 located along an outer column in the channel adjacent the first end 16.
The housing first section 14 includes a second pair of opposed side walls 48 extending longitudinally from each respective shoulder section 46, and that are positioned a reduced distance apart from one another relative to the first pair of side walls 36. In an example, a first pair of shields 50 in the form of plate elements are disposed along inside surfaces of the second pair of side walls 48. The first pair of shields 50 are formed from an electrically conductive material. In an example, the second pair of side walls 48 extend to the middle section 18 of the housing. A third pair of opposed side walls 52 extend longitudinally from the middle section 18 to the housing second end 22. In an example, the third pair of side walls 52 are independent and not connected with the second pair of side walls 48, as evidenced by an air gap 54 disposed therebetween, and the distance between the third pair of side walls 52 is less than that of the second pair of side walls 48. A second pair of shields 56 in the form of plate elements is disposed along an outside surface of the third pair of opposed side walls 52. In an example, the second pair of side walls 48 are positioned apart a distance that enables the third pair of side walls 52 from a duplicate connector to be disposed therebetween so that the first and second pair of shields 50 and 56 mechanically and electrically engage and connect with one another when the connectors are engaged and mated together.
In an example, each electrical terminal includes an angled section 116 that extends outwardly away from the straight section 108. In an example, the angled section 116 extends from the straight section 108 adjacent an end of the channel raised section 112. In an example, the angled section 116 includes a first portion 118 and a second portion 120 that together form a V-shaped configuration. In an example, the first portion 118 has a positive angle of departure from about 5 to 45 degrees relative to a plane running along the straight section 108, and the second portion 120 extends from the first portion 118 and has a negative angle of departure from about 5 to 45 degree relative to a plane running along the straight section 108. In an example, the positive angle of departure for the first portion 118 and the negative angle of departure for the second portion 120 are the same, thereby forming the V-shape configuration. In such example, the electrical terminal angled section second portion 120 extends to an end section 122 that is aligned with the plane running along the straight section 108. In an example, the electrical terminal end section 122 includes an angled tip 124 that departs from the end section 122 in a positive angle of departure relative to the plane running along the straight section 108.
The electrical terminals are configured in this manner for purposes of engaging one another and forming a desired mechanical and electrical interconnection therebetween. As the two connectors are joined together, the angled tips 124 of the end sections 122 operate to facilitate engagement with opposed electrical terminals without snagging and, as the two connectors are further brought together, the electrical terminal end sections 122 of respective opposed electrical terminals wipe along a surface of the opposed electrical terminal straight sections 108 opposite the channel raised sections 112 and form an mechanical and electrical connection therewith. The channel raised sections 112 operate to support and maintain the position of the electrical terminal straight sections 108 while the opposed electrical terminal end sections 122 impose a compression contact force thereon. The recessed space 114 between the raised sections 112 is configured to accommodate placement of the respective opposed electrical end sections 122 therein. Configured in this manner, the opposed electrical terminals from the duplicate joined together connectors provide two points of contact with one another, i.e., the end sections of each opposed electrical terminal are in contact with the respective straight sections of the opposed electrical terminals.
While
A column of the electrical terminals 106 is shown with raised sections 112 shown extending upwardly from the channel floor, and with dividers 134 disposed between adjacent electrical terminals in the column that operate to isolate the electrical terminals in each column from each other. As illustrated in this view, the second connector 84 electrical terminal end sections 122 are in contact with the first connector electrical terminal straight sections 108. In an example, the electrical terminal straight sections 108 are configured having a greater width than the angled sections 116 and end sections 122 for the purpose of providing a desired contact surface area between opposed interconnecting electrical connectors. In an example, the electrical terminal straight section may have a width along a contact surface that is up to 50 percent greater than that of the electrical terminal end section. Alternatively, the electrical terminals may be configured having the same width along contacting portions. Further, it is desired that the electrical terminal straight section contact area have a desired length, and the end section of an opposed electrical connector be positioned so that during the process of joining the first and second connectors together, the opposed electrical terminals end sections have a desired wiping length along the respective electrical terminal straight section so as to remove any surface debris or the like therefrom before forming the final interconnecting electrical mechanical contact therebetween.
In this example, each of the separate angled portions 314 and 316 comprise a first segment 318 having a positive angle of departure that extends to a second segment 320 having a negative angle of departure each relative to a plane running along the straight section 310. In an example, the angle of departure for each first and second segment is the same such that an end sections 322 of each is aligned with the plane of the straight section 310. In an example, each of the angled portion first segments 318 of a single electrical terminal depart in opposite directions from one another, and each of the respective the angled section second segments 320 converge towards one another. The separate angled segment end sections 322 each include angled tips 324 that depart in opposed outward directions from one another. The angled tips 324 operate to facilitate engagement with opposed electrical terminals without snagging. A feature illustrated in
A feature of high-speed connectors as disclosed herein is the hermaphroditic design enabling for electrical connection to be made by using two identical connectors, thereby eliminating the need to make, purchase and keep in inventory more than one part for purposes of making a desired board-to-board electrical connection. Another benefit of such hermaphroditic design is constancy with respect to the configuration of the electrically connecting components such as the electrical terminals for purposes of ensuring a desired consistency and continuity of electrical interconnection, helping to reduce or eliminate unwanted noise that may result from inconstant electrical connections and providing balanced electrical performance. A further feature of connectors as disclosed herein is the feature of the electrical terminals being configured to provide more than one point of electrical and mechanical contact between paired interconnecting electrical terminals. Having two or more points of contact between pairs of interconnecting electrical terminals provides a robust electrical and mechanical connection enabling high-speed connectors as disclosed herein to be used in high vibration applications not possible before with conventional connectors
The foregoing description and accompanying figures illustrate the principles, preferred embodiments and modes of operation of the high-speed connectors as disclosed herein. However, such high-speed connectors should not be construed as being limited to the particular embodiments discussed above. For example, while embodiments of high-speed connectors having a hermaphroditic design have been illustrated comprising electrical terminals capable of providing two or more points of contact between interconnecting electrical terminals, it is to be understood that high-speed connectors having a hermaphroditic design may be configured with electrical terminals providing a single point of contact between interconnecting electrical terminals. In such an alternative example, each connector housing is configured comprising electrical terminals of two different configurations, wherein electrical terminals of one configuration are disposed on one side of a horizontal centerline or vertical centerline running through the housing, and electrical terminals of another configuration are disposed on the other side of the horizontal or vertical housing centerline. Configured in this manner, when two duplicate connector housings are inverted and positioned for attachment with one another, the interconnecting electrical terminal pairs will comprise one of each such differently configured electrical terminals, which are configured to provide a single point of electrical and mechanical contact therebetween.
Additional variations of the embodiments discussed above will be appreciated by those skilled in the art. Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive. Accordingly, it should be appreciated that variations to those embodiments can be made by those skilled in the art without departing from the scope of the high-speed connectors as defined by the following claims.
Number | Name | Date | Kind |
---|---|---|---|
5098311 | Roath | Mar 1992 | A |
5167528 | Nishiyama | Dec 1992 | A |
5181855 | Mosquera | Jan 1993 | A |
6540529 | Yu | Apr 2003 | B1 |
7762846 | Whiteman, Jr. | Jul 2010 | B1 |
7785152 | Yi | Aug 2010 | B2 |
7892037 | Kodera | Feb 2011 | B2 |
7976326 | Stoner | Jul 2011 | B2 |