Patent Grant
7704081
The subject matter herein relates generally to an electrical connector having signal and power contacts, and more particularly to an electrical connector having a tongue and an array of contacts on a periphery of the tongue.
Electrical connectors that comply with the Serial Advanced Technology Attachment (SATA) standard are known. These connectors provide input/output connections for data storage devices in computer assemblies. There is a special connector (eSATA) specified for external data storage devices, and eSATA connectors are also known. These eSATA connectors include a housing having a tongue and contacts arrayed along one surface of the tongue. The contacts include signal contacts and ground contacts.
Computers and external data storage devices using known eSATA connectors are not without disadvantages. For instance, the external data storage devices typically require power to the device. Separate power connections are provided to the external data storage device in addition to the data connection provided by the eSATA connectors. The power is usually provided by an external power connector or a USB connector. Provision of multiple connectors to the external storage device complicates the interconnection and usability of such devices.
There is a need for a data and power connector for external data storage devices that can be accomplished in a simplified manner. There is a need to add power contacts to an eSATA connector without changing the physical dimensions of the connector.
In one embodiment, an electrical connector is provided that includes a dielectric housing having a tongue including an upper surface, a lower surface, and opposite side surfaces. A plurality of signal contacts are held by the housing and are exposed along the upper surface. At least one power contact is held by the housing and is exposed along one of the opposite side surfaces. Optionally, the tongue and signal contacts define an eSATA mating interface configured for mating with a plug of a serial cable defining an eSATA plug interface.
Optionally, each power contact may be oriented non-coplanar with respect to the signal contacts. Each power contact may include a mating surface arranged substantially flush with the corresponding side surface. Optionally, the tongue may have a width measured between the opposed side surfaces. A first power contact may be arranged on one of the side surfaces and a second power contact may be arranged on the other side surface with the exposed portions of the first and second power contacts being separated by a distance substantially equal to the width of the tongue.
In another embodiment, an electrical connector is provided for mating with a serial cable associated with an external data storage device, where the serial cable has one or more data conductors and one or more power conductors. The data conductors are configured to transmit data to the external data storage device and the power conductors are configured to transmit power to the external data storage device. The electrical connector includes a dielectric housing having a tongue including a plurality of surfaces and signal contacts exposed along one of the surfaces of the tongue. The signal contacts are configured to be electrically connected to the data conductors of the serial cable. A power contact is exposed along a different surface of the tongue, where the power contact is configured to be electrically connected to the power conductor of the serial cable to power the external data storage device. A metallic shell surrounds at least a portion of the housing and the shell is configured to engage a portion of the serial cable.
In a further embodiment, an electrical connector is provided that includes a dielectric housing having a base configured to be mounted to a circuit board. The housing has a main wall extending from the base and a tongue extending from the main wall. The tongue has an upper surface that is generally planar and oriented substantially parallel to the base, and the tongue has side surfaces that are generally perpendicular to the upper surface. The main wall has a plurality of cavities extending therethrough. A plurality of signal contacts are held by the housing within corresponding cavities and are exposed along the upper surface. At least one power contact is held by the housing within corresponding cavities and is exposed along one of the opposite side surfaces.
The first electronic device 12 includes an electrical connector 22 for interfacing with the cable 16. Similarly, the second electronic device 12 includes an electrical connector 24 for interfacing with the cable 16. The electrical connectors 22, 24 may be the same type of electrical connector, or alternatively may be different from one another. In the illustrated embodiment, the electrical connectors 22, 24 constitute eSATA connectors, however other types of connectors may be used in alternative embodiments.
The electrical connector 22 is mounted to a circuit board 26 of the first electronic device 12. The components 18 may be directly mounted to the circuit board 26, or alternatively may be electrically connected thereto such as by using connectors. Similarly, the electrical connector 24 is mounted to a circuit board 28 or the second electronic device 14. The components 20 may be electrically connected to the circuit board 28.
The cable 16 is represented in
In an exemplary embodiment, the housing 42 includes a base 68 and a top 70 opposite to the base 68. The main wall 44 generally extends between the base 68 and the top 70. The main wall 44 may be oriented generally perpendicular to the base 68 and/or the top 70. In an exemplary embodiment, the tongue 50 extends from the main wall 44 such that the upper surface 52 and/or the lower surface 54 are oriented generally parallel to the base 68 and/or the top 70. The electrical connector 22 may be mounted to the circuit board 26 (shown in
The housing 42 holds an array of contacts 80 that are exposed along the upper surface 52 of the tongue 50. The array of contacts 80 includes pairs of signal contacts 82 that are separated from each other and flanked by ground contacts 84.
The signal contacts 82 and the ground contacts 84 are installed into respective cavities 86 in the housing 42 through a rear surface 88 of the main wall 44. The cavities 86 are aligned with, and open to, channels 90 formed in the tongue 50. Each of the signal and ground contacts 82, 84 are loaded through the cavities 86 into the channels 90. Optionally, the signal and ground contacts 82, 84 are loaded into the channels 90 such that mating surfaces 92 of the signal and ground contacts 82, 84 are generally flush with the upper surface 52 of the tongue 50. In an alternative embodiment, rather than being loaded into the cavities 86, the housing 42 may be overmolded around the contacts 82, 84.
Each of the signal and ground contacts 82, 84 extend to a tip 94, 96, respectively. The tips 94, 96 represent initial mate points of the signal and ground contacts, however, it is realized that the initial mate points may not necessarily be the actual tip of the contacts 82, 84, depending on the particular application and mating process. Optionally, the ground contacts 84 may be oriented within the electrical connector 22 such that the tips 96 of the ground contacts 84 are positioned forward of the tips 94 of the signal contacts 82. The ground contacts 84 may thus be positioned closer to the front tip 62 of the tongue 50. When the plug 30 is mated with the electrical connector 22, the ground contacts 84 mate with corresponding mating contacts (not shown) of the plug 30 prior to the signal contacts 82 of the electrical connector 22 engaging the mating contacts of the plug 30.
Each of the signal and ground contacts 82, 84 includes a retention section 100, 102 having barbs 104, 106 that secure the signal and ground contacts 82, 84 in respective cavities 86 in the main wall 44 of the housing 42. The signal and ground contacts 82, 84 include respective tails 108, 110 generally opposite the tips 94, 96. The tails 108, 110 are received in respective vias or holes of the circuit board 26 on which the electrical connector 22 is mounted.
The electrical connector 22 further includes a pair of power contacts 120 that are exposed along the opposite side surfaces 56, 58 of the connector tongue 50. Similar to the signal and ground contacts 82, 84, the power contacts 120 are installed into respective cavities 122 (shown in
The power contacts 120 are manufactured by stamping and forming sheet material from a blank. Each power contact 120 has an edge 130 that is defined by a thickness of the sheet material from which the power contacts 120 are stamped. The edge 130 of each power contact 120 defines a mating surface 132 for mating with a corresponding power contact (not shown) of the plug 30. That is, the edge 130 is exposed along the respective side surface 56, 58 of the tongue 50 for mating with the power contact in the plug 30. Optionally, the power contacts 120 may be plated prior to installation or assembly.
The electrical connector 22 also includes the external shield 40 in the form of a metallic shell 134. The shell 134 surrounds the housing 42 and the contacts 82, 84, 120. The shell 134 may be electrically and/or mechanically secured to the circuit board 26. In an exemplary embodiment, the shell 134 is grounded to the circuit board 26 and defines a ground shield for the electrical connector 22. The shell 134 generally covers the gaps 74, 76 along the base 68 and/or the top 70. When the plug 30 is mated with the electrical connector 22, the plug 30 may engage the shell 134 to ground the plug 30 to the electrical connector 22. Optionally, the shell 134 may include fingers 136 that engage the plug 30 when the plug 30 is mated with the electrical connector 22.
Each signal contact 82 is arranged along a signal plane 140 generally defined at or near the upper surface 52. The signal plane 140 extends along, and defined by, the signal contacts 82. In the illustrated embodiment, the ground contacts 84 are also arranged along the signal plane 140.
The power contacts 120 are arranged along a power plane 142 defined by the bi-sector of each power contact 120. The power plane 142 is oriented generally along the center of the tongue 50. The power plane 142 is parallel to, and non-coplanar with, the signal plane 140. The power contacts 120 are off-set with respect to the signal and ground contacts 82, 84 to the side surfaces 56, 58 to minimize a width 144 of the tongue 50. For example, the width 144 of the tongue 50 may be selected to accommodate the signal and ground contacts 82, 84 and the provision of the power contacts 120 does not add to the overall width 144. In the illustrated embodiment, the tongue 50 is wide enough to accommodate two pairs of signal contacts 82 with one ground contact 84 between the pairs and one ground contact 84 outside of each of the pairs. It is realized that any number of signal and/or ground contacts 82, 84 may be provided in alternative embodiments, and the signal and ground contacts 82, 84 may be arranged in any pattern of signal and ground contacts.
Embodiments of electrical connectors 22, 148 are thus provided that define eSATA connectors. The electrical connectors 22, 148 include signal and ground contacts 82, 84 extending along the upper surface 52 of the tongue 50. Power contacts 120 or 150 are arranged along side surfaces 56, 58 of the tongue 50 that provide power to a cable 16 mated with the electrical connector 22, 148. The cable 16 transmits the power to another device such as an external data storage device. The power contacts 120 or 150 are generally flush with the side surfaces 56, 58 such that the overall size of the mating interface is unaffected by the provision of the power contacts 120 or 150.
It is to be understood that the above description is intended to be illustrative, and not restrictive. For example, the above-described embodiments (and/or aspects thereof) may be used in combination with each other. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Dimensions, types of materials, orientations of the various components, and the number and positions, of the various components described herein are intended to define parameters of certain embodiments, and are by no means limiting and are merely exemplary embodiments. Many other embodiments and modifications within the spirit and scope of the claims will be apparent to those of skill in the art upon reviewing the above description. The scope of the invention should, therefore, be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. In the appended claims, the terms “including” and “in which” are used as the plain-English equivalents of the respective terms “comprising” and “wherein.” Moreover, in the following claims, the terms “first,” “second,” and “third,” etc. are used merely as labels, and are not intended to impose numerical requirements on their objects. Further, the limitations of the following claims are not written in means—plus-function format and are not intended to be interpreted based on 35 U.S.C. §112, sixth paragraph, unless and until such claim limitations expressly use the phrase “means for” followed by a statement of function void of further structure.
This application claims the benefit of U.S. Provisional Application No. 61/004,593 filed Nov. 28, 2007, the subject matter of which is herein incorporated by reference in its entirety.
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| 6755689 | Zhang et al. | Jun 2004 | B2 |
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| Number | Date | Country | |
|---|---|---|---|
| 20090137157 A1 | May 2009 | US |
| Number | Date | Country | |
|---|---|---|---|
| 61004593 | Nov 2007 | US |
