BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electrical connector with an improved shielding plate and the improve shell.
2. Description of Related Art
CN Patent Issued No. 203859275U disclose a USB Type C connector which includes a first terminal module, a second terminal module and a shielding plate sandwiched between the first and second terminal modules to electrically isolate the first and second terminals. The shielding plate forms a cutting surface at lateral sides thereof which are defined as side latches. The shielding plate has a thickness less than 0.02 mm. It is believed that the side latches of the shielding plate will scrap a pair of plug latches of a mating connector. Moreover, the plug latch will wear the insulating mating tongue fitly surrounding the terminals and the shielding plate.
In view of the above, an improved electrical connector is desired to overcome the problems mentioned above.
SUMMARY OF THE INVENTION
Accordingly, an object of the present disclosure is to provide a an electrical connector with an improved shielding plate.
According to one aspect of the present disclosure.
Other objects, advantages and novel features of the disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front perspective view of an electrical connector in accordance with a preferred embodiment of the present invention;
FIG. 2 is a bottom perspective view of the electrical connector in FIG. 1;
FIG. 3 is a top exploded perspective view of the electrical connector in FIG. 1;
FIG. 4 is a bottom exploded perspective view of the electrical connector in FIG. 2;
FIG. 5 is a top exploded perspective view of the terminal module in FIG. 3;
FIG. 6 is a bottom exploded perspective view of the terminal module in FIG. 4;
FIG. 7 is a top perspective view of first terminals and a first insulator;
FIG. 8 is a bottom perspective view of the first terminals and the first insulator;
FIG. 9 is a top perspective view of the shielding plate;
FIG. 10 is a bottom perspective view of the shielding plate;
FIG. 11 is a cross-sectional view of the electrical connector along lines 11-11 in FIG. 11;
FIG. 12 is a top exploded perspective view of first terminals and the first insulator;
FIG. 13 is a top exploded perspective view of a second insulator and the first insulator assembled with the first and second terminals; and
FIG. 14 is a bottom exploded perspective view of the second insulator and the first insulator assembled with the first and second terminals.
DETAILED DESCRIPTION OF THE INVENTION
Reference will now be made to the drawings to describe a preferred embodiment of the present disclosure in detail.
Referring to FIGS. 1 and 2 illustrating a low profile electrcia connector 100 which is a receptacle connector mounted on a printed circuit board (PCB, not shown) assembled in an electronic equipment (not shown), for being inserted with a plug connector (not shown). The receptacle connector 100 comprises a casting outer case 1, a pair of shielding sheets 2 fixed on the case 1 and a terminal module 3 retained in the case 1.
Referring to FIGS. 3 and 4, the terminal module 3 includes a base 31 and a mating tongue 32 extending forward from the base 31. The case 1 includes a vertical base wall 11 and two side walls 12 extending forward from two lateral sides of the base wall 11, the base wall 11 defines a retained slot 111 through which the terminal module 3 goes. Please notes, there is no upper and lower walls connecting between the two side walls 12. The shielding sheets 3 cover on the upper and lower sides of the side walls 12 and the base wall 11, so as to commonly define a mating cavity 101 (labeled in FIG. 1), the mating tongue 32 extending into the mating cavity 101 and the insides 121 of the side walls 12 are in an arc-sharp which is comply with the definition of USB Type-C specification. The shielding sheets 2 are laser-soldered to the case 1 and the case 1 is made via metal injection molding process thereby getting a good strength. The case 1 without any upper and lower wall around the mating port will reduce occupancy of the case in the electronic equipment in a vertical direction. Notably, the electrical connector is located around the edge portion of the cellular enclosure which is relative thinner than the main portion of the cellular enclosure. The separate shielding sheets 2 assembled to the case 1 overcome leakage of magnetism. In this preferred embodiment, the two shielding sheets 2 are pre-positioned in shallow recess 13 defined on the case 1 and then laser-welded to the case 1. And then the terminal module 3 is inserter forward through the retained slot 111. Alternatively, the shielding sheets 2 are welded after the terminals module 3 is inserted.
The case 1 further defines mounting wings 14 horizontally extending outward from the lower edges of the outer sides of the side walls 12 and two vertical ribs 15 on each the upper face of mounting wings 14. Each of mounting wings 14 defines a through hole 16 between the two ribs 15, a retaining element such as screws (not shown) can retain the case 1 in the electronic equipment via the through holes 16. The case 1 further defines an upper wall 161 and two side walls 162 extending rearward from the base wall 11, so as to define a receiving cavity 160 thereamong in which the base 31 is retained and received as best shown in FIG. 2.
Referring to FIGS. 5 and 6, the terminal module 3 comprises an insulative housing 30, conductive terminals 40, a shielding plate 50 and a pair of shielding collars 60. The housing 30 includes the base 31 and mating tongue 32 defining two opposite mating surfaces 321 and a front face 322 and two side faces 323 connecting with the mating surfaces 321 and the front face 322. The terminals 40 includes contacting portions 41 exposed upon the mating surfaces 321 and leg portions 42 extending out of the base 31. Referring to FIGS. 9 and 10, the shielding plate 50 made of forging or die-casting, includes a main portion 51 and two side portions 52 at opposite lateral sides of the main portion 51, the side portions 52 are thicker than the main portions 51 along the vertical direction perpendicular to the shielding plate 50. The main portion 51 defines a longitudinal slot 511 running through a front area thereof, so that remaining portions 512 are defined between the longitudinal slot 511 and side portions 52. The inside faces 524 of the two side portions corresponding to the longitudinal slot 511 has a lager distance than that between the inside faces 525 of other portions of the two side portions 52. The main portion 51 includes a front area 514 located between the two side portions 52 and a rear area 515 behind the side portions 52. The shielding plate is formed by die cast.
Referring to FIGS. 7 and 8, the side portions 52 defines rear wings 54 laterally protruding outward from a rear edge thereof. The terminals 30 consist of signal terminals, power terminals 40P and grounding terminals 40G, the grounding terminals 40G are located at outermost position and have tabs 43 touching the corresponding lateral wings 43. Meanwhile, the grounding terminals 40G are located beside the side portions 52 and laterally contact the inside faces 524, 525 of the side portions side-by-side. The terminals are categorized with a row of first terminal 40a and a row of second terminals 40b, the leg portions 42a of the first terminals extend from the contacting portions and then bend downward, while the leg portions 42b located inside of the leg portions 42a, are in a same level of the contacting portions 41b of the second terminals 40b. The rear edges 501 of the side portions extend near to the leg portions 42b.
Referring to FIG. 6, each side portion 52 defines opposite mating faces 521 which construct parts of the mating surfaces 321 of the mating tongue 32 thereby complete the mating surfaces 321, and an outer side face 522 connecting with the mating faces 521. The side portions 52 define side latches 53 at the outer side faces 522. As best shown in FIG. 11, the side portions 52 extend forward to the front face 322 and rearward to the base 31, the lateral wings 54 laterally protrude the base 31. Meanwhile, a boss portion 56 laterally protrudes from each side portion 52. The upper face 561 of the boss portion 56 are lower than the upper face of the side portions 52, while the lower faces 562 of the boss portion 56 and the side portions are located at a same plane. The upper face 561 avoids interfering with ends of the collar 60.
Referring to FIGS. 5 and 6, the mating tongue 32 defines a thickened portion 33 at a root thereof near the base 31, and the pair of collars 60 surrounding the outer periphery of the thickened portion 33 and the boss portions 56 contact the collars 60. The upper collar 61 includes a cover portion 611, a rear wall 613 covering the rear face of the base 31 as shown in FIG. 4 and a connecting portion 612 connecting with the cover portion 611 and the rear wall 613. The lower collar 62 includes a cover portion 621 and a touching portion 622 extending rearward from the cover portion. Combination with FIG. 2, the touching portion 622 stick the inside face of the retaining slot 111 of the base wall 11, so that a grounding trace is form between the touching portion 622 and the case 1. The two cover portions 611, 621 define locking holes 615 and locking dimples 625 which two are engaged with each other at opposite ends thereof, and the boss portions 56 are locked in opposite recesses of the locking dimples 624 as best shown in FIG. 11. Therefore, the pair of collars 60 is retained around the thickened portion 33. Combination with FIG. 2, the leg portions of the two rows are located in a same plane to be mounted on the printed circuit board.
Referring to FIG. 12, the shielding plate 50 and the row of second terminals 40b initially are molded in a first insulator 30a via a first inserting molded process, and successively the row of first terminals 40a are assembled on the upper surface of the first insulator 30a. Since the thickened side portions 52 is strong and long enough to support the first insulator 30a without risks of self-twisting which may happen in the traditional stamped/planar type shielding plate. This is especially true when the shielding plate is required to form some openings for allowing to be insert-molded with the contacts in the first insulator. The traditional stamped/planar type shielding plate may tend to be deflected during manufacturing if many holes are formed in the shielding plate for consideration of insert-molding with the contacts within the insulator. The first insulator 30a consists of a front part 301 and a rear part 302 since resin materials are filled in from two points in the front and rear direction and through slots 57 opened in the shielding plate 50. The upper face of the first insulator defines three rows of ribs 303 thereon and the rear part 302 defines a post 304 at a front edge thereof. And then, a second insulator 30b are molded to surround the row of first terminals 40a and the first insulator 30a, thereby commonly forming the insulating housing 30 as shown in FIG. 5. The shielding collars 60 are assembled on the insulating housing 30 thereby forming the terminals module 3 as shown in FIG. 3. Lastly, the terminal module 3 is assembled in the metallic case 1 thereby forming the receptacle connector 100. As understood, the case 1 is made of die-casting or metal injection molding with thickened structures for superior rigidity thereof. Anyhow, on one hand, the height of the whole connector is a concern for use within a cellular phone so as to remove the top wall and the bottom wall around the mating port; on the other hand, the EMI shielding should be complete so as to provide the relatively thinner shielding sheet 2 attached thereto to replace the originally removed top wall and bottom wall Therefore, another feature of the invention is to have the case made of metal injection molding or die-casting and equipped with additional opposite shielding sheets on the top and the bottom to form a hybrid type case, i.e., the die-casting of the case itself and the stamping of the shielding sheet.
While preferred embodiment in accordance with the present disclosure has been shown and described, equivalent modifications and changes known to persons skilled in the art according to the spirit of the present disclosure are considered within the scope of the present disclosure as defined in the appended claims.
Patent Grant
10199776
