The invention generally relates to an electrical connector and, more specifically, to an electrical connector suitable for differential signal transmission.
In the fields of digital data transmission and communication requiring high-speed signal transmission, differential signal transmission is becoming widely used, and there is consumer demand for reduced size electronic devices used in transmitting high-speed differential signals. Electrical connectors used in such electronic devices also are desired to have smaller profiles.
In view of the problems described above, among others, an electrical connector is provided with a first ground contact and a second ground contact. The first ground contact includes a first ground coupling portion and a pair of first ground contact portions extending substantially orthogonal from the first ground coupling portion. The pair of first ground contact portions includes a first upper ground contact portion stepped from a first lower ground contact portion. The second ground contact includes a second ground coupling portion and a pair of second ground contact portions extending substantially orthogonal from the second ground coupling portion. The pair of second ground contact portions includes a second upper ground contact portion stepped from a second lower ground contact portion. The second ground contact is positioned with the first ground contact such that their respective upper or lower ground contact portions are adjacent to each other.
The invention will now be described by way of example with reference to the accompanying Figures, of which:
The invention is described below by way of exemplary embodiments with reference to the attached drawings.
With reference to
As shown in
Now with reference to
Next, with reference to
The coupling portion 22 includes body 23, a base extension 24, and a terminal extension 25. The body 23 is substantially square shaped in the embodiment shown. However, one skilled in the art should appreciate that the body 23 may take other shapes, for instance, a generally rectangular or other shape. The base extension 24 extends from one end of the body 23, while the terminal extension 25 extends from an opposite end of the body 23. As shown, the base extension 24 is obliquely positioned with respect to the terminal extension 25. In addition, as shown for a specific embodiment, the base extension 24 is wider than terminal extension 25. The base extension 24 for the first ground contact 20A is positioned on a first side (e.g., right side) of the body 23, while the base extension 24 for the second ground contact 20B is positioned on the other side (e.g., left side) of its body 23. Likewise, the terminal extension 25 for the first ground contact 20A is positioned on the second side (e.g., left side) of the body 23, while the terminal extension 25 for the second ground contact 20B is positioned on the other side (e.g., right side) of its body 23. Accordingly, the first ground contact 20A mirrors the second ground contact 20B.
As shown in
In an exemplary embodiment, the contact portions 32, 34 are rectangular and tabular shaped, orthogonal from the coupling portion 22 to extend parallel to the main surface of the circuit board (not shown) where the electrical connector 1 is to be mounted. The contact portions 32, 34 are spaced apart from each other with a gap 33 having a width W1. In the shown embodiment, the terminal extension 25 is centered with respect to the width W1. The gap 33 extends between the mating ends of the contact portions 32, 34. The contact portions 32, 34 of the ground contacts 20A and 20B have the same width W2. In addition, since the contact portions 32, 34 are connected to each other via the upward portion 36 and the downward portion 37 of the base portion 28, the contact portions 32, 34 are said to be stepped from each other or staggered with respect to a horizontal axis (shown in dotted line) along the base portion 28. Accordingly, a tongue receiving space 38 having height D between the contact portions 32, 34 is provided.
Next, with reference to
The body portion 42 is an elongated body having a leading end connecting to the contact portion 46 and a trailing end connecting to the terminating portion 44. The length L1 of the body portion 42 for the signal contact pair 40A is different from the length L2 of body portion 42 of the signal contact pair 40B. Therefore, the contact portions 46 for the signal contact pair 40A and 40B have different heights when terminating portions 44 of signal contacts 40A and 40B are attached to the circuit board. The terminating portion 44 and the contact portion 46 extend in opposite directions. As shown, the contact portion 46 is generally rectangular and tabular shaped, orthogonal from the body portion 42 to extend parallel to the main surface of the circuit board, and has a width W3 that is larger than a width W4 of body portion 42 and the terminating portion 44.
As shown in
In an exemplary embodiment shown in
The body portion 52 is an elongated body having a leading end connecting to the base portion 56 and a trailing end connecting to the terminating portion 54. The base portion 56 is an elongated member bent from body portion 52. The length of the body portion 52 of the power contacts 50 is substantially the same as the length of body portion 42 of the signal contacts 40B in the embodiment shown. The base portion 56 extends substantially orthogonal to the body portion 52. As shown, the base portion 56 includes a proximal end that connects to the body portion 52 and a trailing end that connects to the contact portion 58. Accordingly, the contact portion 58 is offset from the body portion 52 and the terminating portion 54. The terminating portion 54 and the contact portion 58, both angled or bent from the body portion 52, extend in opposite directions from each other.
In an exemplary embodiment, each power ground contact 60 includes a body portion 62, a terminating portion 64, and a contact portion 66. Each power ground contact 60 is formed by stamping and forming a conductive metal plate. When stamped each power ground contact 60 has the same shape. However, during the forming process, the terminating portion 64 and the contact portion 66 are bent differently depending on the type of power ground contact 60, as will be discussed in more detail below. In other embodiments, the power ground contacts 60 may be formed using other methods and made of other conductive materials besides metal. It should be recognized that the terminating portion 64 in various embodiments may be a surface mount terminal, through post, or other mechanism for soldering or attaching to the circuit board.
The body portion 62 is an elongated body having a leading end connecting to the contact portion 66 and a trailing end connecting to the terminating portion 64. The length of the body portion 62 is substantially the same as the length of body portion 42 of the signal contacts 40A in the embodiment shown.
One skilled in the art would appreciate that the power contact 50 and the power ground contract 60 could be reversed depending on the arrangement of the power contact 50 and the power ground contact 60 along the tongue 18, as will be described below. For instance, the power ground contact 60 may have the aforementioned design of the power contact 50, while the power contact 50 may have the aforementioned design of the power ground contact 60.
Additionally, as shown in
In the shown embodiment, each outer ground contact 70 (70A, 70B) includes a body portion 72, a terminating portion 74, and a contact portion 76. It should be recognized that terminating portion 74 in various embodiments may be a surface mount terminal, through post, or other mechanism for soldering or attaching to the circuit board. The body portion 72 is an elongated body having a leading end extending to the contact portion 76 and a trailing end extending to the terminating portion 74. The terminating portion 74 and the contact portion 76, are both bent to be angled from the body portion 72, and to extend generally in opposite directions from each other. As shown, the contact portion 76 is offset from the body portion 72 and the terminating portion 74. In particular, for the outer ground contact 70A, the contact portion 76 is offset from the terminating portion 74 through a base portion 78 that connects the body portion 72 and the contact portion 76. However, the outer ground contact 70B body portion 72 is substantially square shaped in the embodiment shown. One skilled in the art should appreciate that the body portion 72 may take other shapes, for instance, generally rectangular or other shapes.
Now with reference to
A mating connector receiving passageway 2 is provided and defined by an opening along a front side of the shell 80. The mating connector receiving passageway 2 (seen in
The contact portions 32, 34 of the ground contacts 20A and 20B and the contact portions 46 of the signal contacts 40A, 40B are arranged on the contact support 10 in the mating connector receiving passageway 2. In particular, the contact portions 32, 34 of the ground contacts 20A and 20B and the contact portions 46 of the first and second signal contacts 40A, 40B are arranged on the upper and lower surfaces of the tongue 18.
The contact portions 32 of the ground contacts 30 (30A, 30B) are positioned on the first or upper surface of the tongue 18, while the contact portions 34 of the ground contacts 30 (30A, 30B) are positioned on the opposite or lower surface of the tongue 18. The contact portion 46 of the first signal contact 40A is positioned on the upper surface of the tongue 18, while the contact portion 46 of the second signal contact 40B is positioned on the lower surface of the tongue 18. In the embodiment shown, the contact portions 58 of the power contacts 50 both are positioned on the lower surface of the tongue 18. However, in other embodiments, contact portions 58 of the power contacts 50 both may be positioned on the upper surface of the tongue 18; or contact portion 58 of one power contact 50 may be positioned on the upper surface of the tongue 18 while contact portion 58 of another power contact 50 may be positioned on the lower surface of tongue 18.
In an exemplary embodiment, the pair of first signal contacts 40A are positioned adjacent to each other, with a ground contact 20A positioned adjacent to one of the pair of first signal contacts 40A and a ground contact 20B positioned adjacent to the other of the pair of first signal contacts 40A. Accordingly, the coupling portions 22 of the ground contacts 20A, 20B are parallel to and cover the body portions 42 of the pair of first signal contacts 40A, and contact portions 32 of ground contacts 20A,20B are positioned adjacent to the contact portions 46 of the first signal contacts 40A. Therefore, since the coupling portions 22 of the ground contacts 20A, 20B cover the body portions 42 of the pair of first signal contacts 40A, noise from other paired differential signal contacts (i.e. signal contacts 40B) can be suppressed, thereby achieving favorable signal transmission performance.
Additionally, the contact portions 34 are positioned under and face the contact portions 46 of the first signal contacts 40A. Since the contact portions 32, 34 are stepped from each other, the tongue receiving space 38 is provided between the contact portions 32, 34 and the contact portions 46 of the first signal contacts 40A.
In the embodiment shown, one second signal contact 40B is positioned adjacent to the ground contact 20A and another second signal contact 40B is positioned adjacent to the ground contact 20B. In particular, the body portion 42 of the second signal contact 40B is positioned adjacent to the coupling portion 22 of the ground contact 20A. In addition, the body portion 42 of the other second signal contact 40B is positioned adjacent to the coupling portion 22 of the ground contact 20B. The length of the body portion 42 of the second signal contacts 40B is shorter than the coupling portions 22 of the ground contacts 20 (20A, 20B) and the body portions 42 of first signal contacts 40A. When arranged adjacent to the ground contacts 20 (20A, 20B), the contact portions 46 of the second signal contacts 40B are positioned under and face the contact portions 32 of the ground contacts 20 (20A, 20B).
Accordingly, the contact portions 32 of ground contacts 20 and the contact portions 46 of first signal contacts 40A are spaced from each other and positioned on the upper surface of tongue 18; while contact portions 34 of ground contacts 20 and contact portions 46 of second signal contacts 40B are spaced from each other and positioned on the lower surface of tongue 18.
The described arrangement of the first ground contact 20A, the second ground contact 20B, the first signal contacts 40A, and the second signal contacts 40B may be sequentially repeated across the tongue 18. The number of sequential units will depend on the number of contacts desired for the particular application for the electrical connector 1. In the embodiment shown in
In the embodiment shown in
The power contacts 50 are positioned at opposite ends of the discussed arrangement and positioned on the lower surface of the tongue 18. The power ground contacts 60 are also positioned at opposite ends of the discussed arrangement and positioned on the upper surface of the tongue 18 and correspond with the power contacts 50.
Although exemplary embodiments have been shown and described, it would be appreciated by those skilled in the art that various changes or modifications may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.
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