BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electrical connector, and more particularly to a flippable plug connector used with a receptacle connector.
2. Description of Related Art
USB 3.0 Promoter Group issues a new specification which establishes a new type connector named as USB Type-C Cable and Connector, on Aug. 11, 2014. In the specification, the Type-C plug enhances ease of use by being plug-able in either upside-up or upside-down directions. The plug connector connecting with a cable defines two types, one type is USB Full-Featured Type-C Plug Interface with 22 pins, another type is USB 2.0 Type-C plug with 14 pins. The plug connector is connected to the cable via paddle card, which will enhance the whole cost of the cable connector.
Hence, a new and simple electrical plug connector and the complementary receptacle connector are desired to improve those disclosed in the aforementioned proposal.
SUMMARY OF THE INVENTION
Accordingly, the object of the present invention is to provide to a plug connector comprises a connector body defining a front mating cavity with a first inner side and a second inner side opposite to the first inner side, and a rear cable supporting platform with a first surface and a second surface opposite to the first inner side and a plurality of terminals. The terminals comprise two rows of contacting sections arranged along the first and second inner sides of the mating cavity and soldering legs extending to the platform to be welded to a cable. The soldering legs are arranged in one row and exposing to the first surface of the platform while the second surface of the platform has no soldering legs to be welded to the cable.
Other objects, advantages and novel features of the invention 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 an assembled perspective view of a plug connector connecting with a cable of a first embodiment of the instant invention;
FIG. 2 is a partially exploded perspective view of the plug connector of FIG. 1;
FIG. 3 is a rear and top perspective view of the connector body in FIG. 2;
FIG. 4 is a rear and bottom perspective view of the connector body as shown in FIG. 3;
FIG. 5 is a rear and top perspective view of the terminals and the metallic latch of the connector body;
FIG. 6 is a rear and bottom perspective view of the terminals and the metallic latch of the connector body;
FIG. 7 is a rear and top perspective view of a plug connector connecting with a cable of a second embodiment of the instant invention without the outer molded cover;
FIG. 8 is a perspective view of the terminals and the metallic latch;
FIG. 9 is a rear and top perspective view of the connector body in FIG. 7;
FIG. 10 is a rear and bottom perspective view of the connector body as shown in FIG. 9;
FIG. 11 is a rear and top perspective view of a plug body of a plug connector of a third embodiment of the instant invention;
FIG. 12 is a rear and bottom perspective view of the plug body in FIG. 11;
FIG. 13 is a rear and top perspective view of the terminals and the metallic latch of the connector body in FIG. 11; and
FIG. 14 is a rear and bottom perspective view of the terminals and the metallic latch of the connector body in FIG. 11.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Reference will now be made in detail to the preferred embodiment of the present invention.
Referring to FIG. 1 through FIG. 6, a USB Type C plug connector 100 of a first embodiment of this present invention is illustrated, which comprises a front connector body 10 and a rear cable 20 connecting with the connector body 10. The connector body 10 defines a front mating cavity 11 opening forwards and two rows of terminals 40 with contacting sections 41 along opposite first inner side 111 and second inner side 112 of the mating cavity 11 in a diagonally symmetrical manner. Referring to FIGS. 2 and 3, the connector body 10 defines a cable supporting platform 12 at a rear end thereof, and soldering legs TP1(T), TCC1, TD1, TG1(T) of the terminals 40 are exposed to the platform 12. Wires 21 of the cable 20 are disposed on the platform 12 and welded to the corresponding soldering legs. An upper metallic shell 31 and a lower metallic shell 32 enclose the platform 12. A molded cover 33 encloses the connector body 10 and the cable 20, thereby forming the plug connector 100.
Combination with FIGS. 3 and 4 referring to FIGS. 5 and 6, the terminals 40 are arranged to be complied with USB Type C 2.0, and divided to two rows, a first row includes a pair of grounding terminals G1, a pair of power terminals P1, a CC detecting terminal CC and a pair of USB 2.0 terminals D (including D+, D−), a second row includes a pair of grounding terminals G2, a pair of power terminals P2 and a Vconn detecting terminal V. The USB 2.0 terminals (D+, D−) and the detecting terminal CC are independent pin, each comprises a front contacting section 411, a rear leg section 413 and a middle section 412 connecting with the contacting section 411 and the leg section 413. The leg sections 413 of the USB 2.0 terminals (D+, D−) and the detecting terminal CC expose to the platform 12 and are functioned as said soldering legs TD1, TCC1 while the power and grounding terminals are not independent as described hereinafter.
The two pairs of power terminals P1, P2 have two pairs of contacting sections 411 (near to P1, P2 in FIGS. 5 and 6) and two pairs of leg sections. A first leg section TP1 extends from each of the two first power contacting sections, a second leg section TP2 extends from each of the two second power contacting section and the second power terminals are further joined together with a bridge section 415. One of said two first power leg section TP1 bends toward the second power leg sections TP2 and touches with one second power leg section TP2 in a stacked form and another second power leg section TP2 bends toward another first power leg section TP1 so that said four power leg sections are electrically connecting with each other and only one first leg section labeled as TP1(T) exposes to the first surface 120, that is, the four power contacting sections share a same power soldering leg TP1(T). The first power leg section TP1 exposes to a first surface 120 and is functioned as a power soldering leg TP1(T).
A first grounding leg section TG1 extends from a rear end of each first grounding contacting sections (near to G1 in FIGS. 5 and 6), a second grounding leg section TG2 extends from a rear end of the second grounding contacting sections (near to G2 in FIGS. 5 and 6), two second grounding leg sections TG2 further are joined together with a second bridge section 416. The first and second grounding leg sections TP1, TP2 are stacked with each other in the vertical direction so that the four grounding leg section are electrically connecting with each other. Only one first grounding leg section labeled as TG1(T) is exposed to the first surface 120 which is functioned as a grounding soldering leg TG1(T). That is, the four grounding contacting sections share a same grounding soldering leg TP1(T). Other leg sections of the power terminals and grounding terminals are wholly embedded in the platform 12.
The connector body 10 further includes a H-shape metallic latch 50, which includes a pair of side arms 51 with locking heads 511 projecting into the mating cavity 11 and two leg sections 52. The leg sections 52 and the first grounding leg sections TG1 are located side by side and abut against each other. The second grounding leg sections TG2 are stacked with the leg sections 52 in a vertical direction. Understandingly, the grounding soldering leg may be the first grounding leg section TG1, the second grounding leg section TG2 or the leg section 52 of the latch. Referring to FIGS. 3 and 4, the first surface 120 and the first inner side 111 of the mating cavity 11 are located at a same side of the connector body 10. Therefore, the first grounding leg section TG1 may be the best choice for manufacturing a same row of the terminals since the first grounding contacting section (near to G1 in FIGS. 5 and 6) and the detecting contacting section (near to CC in FIGS. 5 and 6) are located at a same side of the mating cavity 11 described hereinafter.
In the preferred embodiment, the contacting sections 411 of the terminals 40 includes a pair of USB 2.0 signal contacting sections, a pair of power contacting sections, a pair of first grounding contacting sections and a detecting contacting section commonly located at the first inner side 111 of the mating cavity 11, and a pair of second power contacting sections and a pair of second grounding contacting sections commonly located at the second inner side 112 of the mating cavity 11. The first and second power/grounding contacting sections are aligned with each other in the vertical direction. The soldering legs includes a pair of signal soldering legs TD1 respectively extending from the signal contacting sections, only one power soldering leg TP1(T) extending from the first and second power contacting sections, only one grounding soldering leg TG1(T) extending from the first and second grounding contacting sections and one detecting soldering leg TCC1 extending from the detecting contacting section. The detecting soldering leg TCC1 is located beside the pair of the signal soldering legs TD1, the grounding soldering leg TG1(T) and the power soldering leg TP1(T) are located at opposite sides of the detecting soldering leg TCC1 and the pair of the signal soldering legs TD1. Referring to FIG. 2, the wires 21 of the cable 20 includes a power wire 21P, a grounding wire 210 a pair of signal wires 21D, and a CC detecting wire 21C which are weldingly connecting with the corresponding soldering legs one by one. Understandingly, all the soldering sections are disposed directing to a same vertical direction and on a same horizontal plane, the wires 21 are arranged upon a same surface, i.e., the first surface 120 of the platform 12 without any wire of the cable on the second surface of the platform, which will facility the soldering process of the wires 21 to the soldering legs. Referring to FIG. 3, the first surface 120 further defines a plurality of recesses 124 partitioned by ribs 123 and running rearwards through the platform, which includes a grounding recess, a detecting recess and a power recess to receive corresponding wires of the cable. The soldering legs are flushed with the inner bottom 1231 of the recess 124. Therefore, the wires 21 are received and limited in the recesses 124. The power and grounding soldering legs are wider than the signal soldering legs TD1 and the detecting soldering leg TCC1 in a transverse direction perpendicular to the vertical direction and the front-rear direction. The leg sections 52 of the latch and the grounding soldering leg TG1(T) are commonly exposed to recess 124 for enlarger welding space. The first surface 120 further intentionally defines tine slits 125 beside the power soldering leg and the grounding soldering leg so as to allow solder material to be filled therein to join the corresponding leg sections, and to join the corresponding leg sections together when a soldering process is applied through a hot bar.
FIGS. 7 through 10 illustrate a second embodiment of a plug connector 200 which is similar to the plug connector 100 of the first embodiment. The first surface 120 is only exposed with a power soldering leg TP1(T), a grounding soldering leg TG1(T) and a detecting soldering leg TCC1, while the second surface 121 has no soldering legs exposed. The plug connector 200 is adapted for transmission larger power which is omitted the pair of the USB 2.0 signal terminals. As shown in FIG. 8, the connector body 10 only has the signal contacting sections D without any leg sections.
FIGS. 11 through 14 illustrate a third embodiment of a plug connector 300 which is similar to the plug connector 100 of the first embodiment. The first surface 120 is exposed with a pair of signal soldering legs TD1, a power soldering leg TP1(T), a grounding soldering leg TG1(T) and a detecting soldering leg TCC1, and the second surface 121 is exposed with a grounding leg section TP2 and a grounding leg section TG2. The second power and grounding leg sections on the second surface 121 is not used to be connected with wires of the cable or a resistor, therefore, those second power and grounding leg sections are not defined as soldering legs connecting with the cable. The second surface 121 further intentionally defines some tine slits 125 beside the second power leg section and the second grounding leg section so as to allow solder material to be filled therein to join the corresponding leg sections, and to join the corresponding leg sections together when a soldering process is applied through a hot bar. Compared with connector bodies 10 of the first and second embodiment of which the second surface 121 is whole filled with resin material without any slots, the slits 125 and the exposed leg sections benefit to manufacture of the connector body and the steady connecting of all the power/grounding leg sections. The second surface 121 further defines shallow recesses 126, but the shallow recesses 126 are not enough larger to receive the wires of the cable. Alternatively, other leg sections also can be exposed to the second surface, but said other leg sections has no functions of soldering legs.
However, the disclosure is illustrative only, changes may be made in detail, especially in matter of shape, size, and arrangement of parts within the principles of the invention.
Patent Application
20170093091
