The present invention relates to an electrical connector, and more particularly to a shielding connector that can effectively improve the shielding effect.
An electrical connector in the related art generally includes an insulating body, conducting terminals disposed in the insulating body, and a shielding casing wrapping the insulating body. In order to conduct an electromagnetic interference signal of a conducting terminal to a grounding path to shield electromagnetic interference, the shielding casing is generally provided with one or more soldering pins soldered to a solder pad of a circuit board. The soldering pins of a DIP type are generally soldered alternately into through-holes of the circuit board in a through hole technology and conducted to the solder pad; or soldering pins of a surface mounting technology (SMT) type bend on the shielding casing, and are soldered to the solder pad of the circuit board in a surface mounting manner; or soldering pins of both the DIP type and the SMT type are used. In the foregoing structure, multiple soldering pins of the DIP type are spaced from each other, multiple soldering pins of the SMT type are also spaced by a distance, and the soldering pins of the DIP type and the soldering pins of the SMT type are also disposed independently from each other.
However, when the electrical connector of this structure is soldered to the circuit board, since the soldering pins are spaced from each other or spaced by a distance or are independent from each other, multiple gaps exist at a position where the shielding casing and the circuit board are connected, causing electromagnetic interference signals to leak from these gaps, so that the shielding effect of the shielding casing deteriorates.
Therefore, a heretofore unaddressed need exists in the art to address the aforementioned deficiencies and inadequacies.
In one aspect, the present invention is directed to a shielding connector that can effectively improve the shielding effect.
In one embodiment, a shielding connector includes an electrical connector body and a shielding casing. The electrical connector body includes a main body used for being mounted onto a circuit board, and a mating portion extending from the main body and used for mating with a mating connector. The shielding casing wraps the periphery of the main body, and has a mounting portion fixed onto the circuit board. The mounting portion includes a first soldering portion and a second soldering portion. The first soldering portion is used for being fixed to a solder pad on a surface of the circuit board in a surface mounting manner. The second soldering portion has an insertion portion used for being soldered and fixed into a soldering hole provided on the circuit board, and a contact portion used for being soldered and fixed to a solder plate surrounding the soldering hole on the surface of the circuit board. The contact portion and the first soldering portion are connected.
In one embodiment, the mounting portion is disposed at a plate edge of the shielding casing.
In one embodiment, the shielding casing includes at least one first side wall extending toward the circuit board along a side wall of the main body. The mounting portion is disposed at a plate edge of the first side wall close to the circuit board. Multiple first soldering portions are disposed at the plate edge of the first side wall. One second soldering portion is disposed at each of two opposite ends of each of the first soldering portions.
In one embodiment, the shielding casing further includes at least one second side wall extending toward the circuit board. The second side wall and the first side wall are adjacent and jointly wrap the side wall of the main body, and a third soldering portion used for being fixed onto the surface of the circuit board in the surface mounting manner is formed at a plate edge of the second side wall close to the circuit board.
In one embodiment, the first side wall extends along the side wall of the main body to encircle the entire main body, and the mounting portion encircles the periphery of the main body.
In one embodiment, a reserved portion is depressed from the mounting portion toward a direction away from the circuit board, and a gap exists between the reserved portion and the circuit board to reserve a space for a conducting circuit on the circuit board.
In one embodiment, the mounting portion further includes a fourth soldering portion used for being fixed onto the surface of the circuit board in the surface mounting manner, and the fourth soldering portion is connected to neither the first soldering portion nor the second soldering portion.
In one embodiment, one second soldering portion is disposed at each of two opposite ends of the first soldering portion, and each of the second soldering portions has one contact portion connected to the first soldering portion.
In one embodiment, the second soldering portion includes two contact portions separately located at two opposite sides of the insertion portion, and each of the contact portions is connected to one first soldering portion.
In one embodiment, the mating portion is sheathed in a metal casing. A mating cavity for the mating connector to be inserted therein is formed in the mating portion. A shielding sheet is disposed on an outer side surface of the mating portion. An elastic sheet bends from one end of the shielding sheet and enters the mating cavity to contact a metal housing of the mating connector. An arm portion bends from another end of the shielding sheet toward the metal casing and elastically urges the metal casing. An opening is provided at a middle portion of the elastic sheet, and the opening widens gradually from a root portion of the elastic sheet toward a free end of the elastic sheet.
The electrical connector body includes an insulating seat and multiple conducting terminals disposed in the insulating seat. Each conducting terminal has a conducting portion bending from one end thereof and used for electrically connecting the mating connector. Multiple reserved slots are provided through a surface of the insulating seat and correspond to free ends of the conducting portions. A through-hole is provided at a position of the shielding sheet corresponding to the reserved slots. An outer side of the shielding sheet is covered with an insulating sheet, and the insulating sheet correspondingly covers the through-hole of the shielding sheet.
Compared with the related art, in certain embodiments of the present invention, a first soldering portion of a surface mounting type and a second soldering portion of a DIP type are disposed on a mounting portion of a shielding casing and connected, and the two are coherently soldered to a circuit board, and therefore a gap between the mounting portion of the shielding casing and the circuit board can be effectively reduced, so as to reduce the risk of leaking electromagnetic interference signals, and improve the shielding effect.
These and other aspects of the present invention will become apparent from the following description of the preferred embodiment taken in conjunction with the following drawings, although variations and modifications therein may be effected without departing from the spirit and scope of the novel concepts of the disclosure.
The accompanying drawings illustrate one or more embodiments of the invention and together with the written description, serve to explain the principles of the invention. Wherever possible, the same reference numbers are used throughout the drawings to refer to the same or like elements of an embodiment.
The present invention is more particularly described in the following examples that are intended as illustrative only since numerous modifications and variations therein will be apparent to those skilled in the art. Various embodiments of the invention are now described in detail. Referring to the drawings, like numbers indicate like components throughout the views. As used in the description herein and throughout the claims that follow, the meaning of “a”, “an”, and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein and throughout the claims that follow, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise. Moreover, titles or subtitles may be used in the specification for the convenience of a reader, which shall have no influence on the scope of the present invention.
It will be understood that when an element is referred to as being “on” another element, it can be directly on the other element or intervening elements may be present therebetween. In contrast, when an element is referred to as being “directly on” another element, there are no intervening elements present. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
Furthermore, relative terms, such as “upper” and “lower,” “top” and “bottom,” “front” and “rear,” “left” and “right,” may be used herein to describe one element's relationship to another element as illustrated in the Figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures. For example, if the device in one of the figures is turned over, elements described as being on the “lower” side of other elements would then be oriented on “upper” sides of the other elements. The exemplary term “lower”, can therefore, encompasses both an orientation of “lower” and “upper,” depending of the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as “below” or “beneath” other elements would then be oriented “above” the other elements. The exemplary terms “below” or “beneath” can, therefore, encompass both an orientation of above and below.
As used herein, “around”, “about” or “approximately” shall generally mean within 20 percent, preferably within 10 percent, and more preferably within 5 percent of a given value or range. Numerical quantities given herein are approximate, meaning that the term “around”, “about” or “approximately” can be inferred if not expressly stated.
As used herein, the terms “comprising”, “including”, “carrying”, “having”, “containing”, “involving”, and the like are to be understood to be open-ended, i.e., to mean including but not limited to. The description will be made as to the embodiments of the present invention in conjunction with the accompanying drawings in
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To reserve space for the conducting portion 61, and prevent the shielding sheet 7 and the conducting portion 61 from being short-circuited, a through-hole 73 is provided at the center of the shielding sheet 7 corresponding to the reserved slot 54. The outer side of the shielding sheet 7 is covered with an insulating sheet 8. The insulating sheet 8 correspondingly covers the through-hole 73 of the shielding sheet 7, and is used for isolating the conducting portion 61, so as to prevent the conducting portion 61 and the metal casing 3 from being short-circuited.
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A plate edge of the second side wall 22 close to the circuit board 4 has a third soldering portion 220, for being fixed to the surface of the circuit board 4 in the surface mounting manner. Therefore, the rear end of the shielding casing 2 can wrap the main body 10 hermetically as much as possible, and the gap at the position where the second side wall 22 and the circuit board 4 are soldered is reduced, so as to reduce the risk of leaking electromagnetic interference signals, and improve the shielding effect.
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Certain embodiments of the present invention, among other things, have the following beneficial advantages.
1. A first soldering portion 231 of a surface mounting type and a second soldering portion 232 of a DIP type are disposed on a mounting portion 23 of a shielding casing 2 and connected to each other, and the two are coherently soldered to a surface of a circuit board 4, and therefore a gap between the mounting portion 23 of the shielding casing 2 and the circuit board 4 can be effectively reduced, so as to reduce the risk of leaking electromagnetic interference signals, and improve the shielding effect.
2. The mounting portion 23 is disposed at a plate edge of the shielding casing 2, and therefore it is convenient to form the first soldering portion 231 and the second soldering portion 232 connected to each other, and the shielding casing 2 can be mounted onto the circuit board 4 hermetically as much as possible, so as to reduce the gap at a position where the plate edge of the shielding casing 2 and the circuit board 4 are connected, and improve the shielding effect.
3. A second side wall 22 and a first side wall 21 are adjacent and jointly wrap a side wall of a main body 10, and therefore the rear end of the shielding casing 2 can wrap the main body 10 hermetically as much as possible, so as to prevent interference signals in the main body 10 from leaking A third soldering portion 220 is disposed at a plate edge of the second side wall 22 and used for being fixed to the surface of the circuit board 4 in a surface mounting manner, and therefore the gap between the second side wall 22 and the circuit board 4 can be reduced, so as to reduce the risk of leaking electromagnetic interference signals, and improve the shielding effect.
4. The first side wall 21 extends to encircle the entire main body 10 along the side wall of the base 50, and the mounting portion 23 encircles the periphery of the main body 10, and therefore the plate edge of the entire shielding casing 2 is fixed to the circuit board 4 by using the first soldering portion 231 and the second soldering portion 232 which are sequentially connected. In such a structure, the shielding casing 2 can wrap the main body 10 seamlessly, the mounting portion 23 is in a consecutive ring shape as much as possible, and the gap between the mounting portion 23 and the surface of the circuit board 4 can be further reduced, so as to strengthen the shielding effect.
5. A shielding sheet 7 is added onto an accommodating portion 51, an elastic sheet 70 is disposed at one end of the shielding sheet 7 to enter a mating cavity 52 to contact a metal housing of a mating connector, and an arm portion 72 extends from another end and urges the shielding casing 2. Therefore the shielding effect at a mating portion 11 can be enhanced, and a complete grounding path is formed between the shielding connector and the mating connector, so as to strengthen the shielding effect of the shielding connector and the mating connector.
6. An opening 71 is provided at a middle portion of the elastic sheet 70 at the front end of the shielding sheet 7, and elasticity of the elastic sheet 70 can be enhanced, so as to ensure stable contact between the elastic sheet 70 and the metal housing of the mating connector.
7. The reserved slot 54 runs through a surface of the accommodating portion 51, is in communication with the mating cavity 52, and can be reserved for a free end of the conducting portion 61 to enter correspondingly when the conducting portion 61 contacts the mating connector, so as to ensure that the conducting portion 61 can elastically move freely, prevent fatigue of a conducting terminal 6, and ensure good contact.
8. A through-hole 73 provided at a position at the center of the shielding sheet 7 corresponding to the reserved slot 54 can reserve the conducting portion 61 of the conducting terminal 6, so as to prevent the shielding sheet 7 and the conducting portion 61 of the conducting terminal 6 from being short-circuited.
9. The insulating sheet 8 correspondingly covers the through-hole 73 of the shielding sheet 7, and is used for isolating the conducting portion 61 of the conducting terminal 6, so as to prevent the conducting portion 61 and the metal casing 3 from being short-circuited.
The foregoing description of the exemplary embodiments of the invention has been presented only for the purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching.
The embodiments are chosen and described in order to explain the principles of the invention and their practical application so as to activate others skilled in the art to utilize the invention and various embodiments and with various modifications as are suited to the particular use contemplated. Alternative embodiments will become apparent to those skilled in the art to which the present invention pertains without departing from its spirit and scope. Accordingly, the scope of the present invention is defined by the appended claims rather than the foregoing description and the exemplary embodiments described therein.
This application claims priority to and the benefit of, pursuant to 35 U.S.C. §119(e), U.S. provisional patent application Ser. No. 62/024,728, filed Jul. 15, 2014, entitled “ELECTRICAL CONNECTOR,” by Ted Ju, which is incorporated herein in its entirety by reference. Some references, if any, which may include patents, patent applications and various publications, may be cited and discussed in the description of this invention. The citation and/or discussion of such references, if any, is provided merely to clarify the description of the present invention and is not an admission that any such reference is “prior art” to the invention described herein. All references listed, cited and/or discussed in this specification are incorporated herein by reference in their entireties and to the same extent as if each reference was individually incorporated by reference.
Number | Date | Country | |
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62024728 | Jul 2014 | US |