Electric connector

Electrical connector

The present invention relates to an electrical connector, and more particularly to an electrical connector in which a split tongue is mounted in combination on an insulative base.

In order to meet the versatile and space-saving use requirements, composite electrical connectors that can meet a variety of signal transmission specifications have become a trend in the development of electrical connectors. In particular, the signal transmission specification is continuously updated. In the transition period between the old and new transmission specifications, the composite electrical connector capable of complying with the old and new transmission specifications at the same time can increase the convenience of use.

At present, the more commonly used signal transmission specifications are USB2.0, USB3.0 (USB is the abbreviation of Universal Serial Bus) and ESATA (External Serial Advanced Technology). Attachment), so the development of a composite socket electrical connector for USB2.0, USB3.0 and ESATA plug connectors, such as Taiwan New Patent Bulletin No. M357748 (corresponding Chinese patent application number 200810173163.4 The corresponding US Patent Publication No. US2009111330A1) is disclosed. A preferred embodiment disclosed in the patent No. M357748 is an assembled structure using a split tongue and includes three types of terminals, wherein the first type of terminal is an ESATA connector terminal and the second type of terminal is a standard USB 2.0. The connector terminal, the third type terminal and the second type terminal cooperate to form a USB3.0 connector terminal, and the third type terminal and the tongue plate are integrally formed and embedded in the tongue plate, and the first type terminal is mounted on the upper surface of the tongue plate. The second type of terminal is mounted to the lower surface of the tongue. However, the tongue plate of the separate assembly itself has a weaker structural strength due to the thinner thickness. In order to install the terminal of the second type, the tongue plate forms a terminal passage penetrating to the rear end of the tongue plate, so that the strength of the tongue plate is more insufficient. It is difficult to withstand large insertion and extraction forces or torsional moments, or abnormal insertion and removal conditions, which are prone to loosening and breaking of the tongue.

Accordingly, it is an object of the present invention to provide an electrical connector that can enhance the strength of a split tongue.

Therefore, according to a preferred embodiment of the present invention, the electrical connector of the present invention comprises an insulating unit, a plurality of first terminals, a plurality of second terminals, a plurality of third terminals, and a set of metal disposed outside the insulating unit case. The insulation unit includes a base and a tongue plate. The base has a base wall and an assembly groove disposed on the base wall and engaging the tongue plate, and the assembly groove penetrates the base wall back and forth. The tongue plate is engaged with the assembly groove, and the tongue plate has a body and a plurality of terminal mounting grooves which are recessed downward from the top surface of the body. The rear ends of the terminal mounting grooves are defined by a boss portion. The pedestal further has a plurality of first terminal passages disposed on the base wall and corresponding to the terminal mounting slots, and each of the first terminal passages has a retreat recess corresponding to the position of the boss portion. The first terminals are fixed to the insulation unit, and each has an elastic contact portion corresponding to each of the terminal mounting grooves. The second terminal is fixed to the insulating unit, and each has a second contact portion exposed on the top surface of the body of the tongue and closer to the front end of the tongue than the first terminal. The third terminal is fixed to the insulation unit, and each has a third contact portion exposed on the bottom surface of the body of the tongue plate.

According to the function of the preferred embodiment of the present invention, by forming a boss portion at the rear end of the terminal mounting groove of the tongue plate, the rear portion of the tongue plate is connected in a laterally overall manner and a thick block shape, thereby increasing the strength of the tongue plate and borrowing By the recessing recess of the first terminal passage, the front end of the elastic contact portion of the first terminal can pass over the boss portion at the rear end of the terminal mounting groove, and the terminal mounting groove can be easily accessed to complete the assembly.

The foregoing and other technical aspects, features and advantages of the present invention will be apparent from the following description of the preferred embodiments.

Referring to Figures 1, 2 and 3, a preferred embodiment of the electrical connector of the present invention is adapted to be mounted on a circuit board 9 having a recess 91 through which a portion of the electrical connector 1 is located under the panel. The electrical connector 1 includes an insulating unit, a plurality of first terminals 4, a plurality of second terminals 5, a plurality of third terminals 6, a metal housing 7, and a terminal positioning plate 8.

The insulating unit includes a base 2 and a tongue 3. The base 2 has a base wall 21 and an assembly groove 22 provided in the base wall 21 and engaging the tongue plate 3. The assembly groove 22 extends back and forth through the base wall 21. The base 2 further has two side walls 23 integrally connected to the two sides of the base wall 21 and extending forwardly on the left and right sides of the tongue plate 3, and two are integrally connected to the two sides of the base wall 21 and are opposite to the side walls 23, respectively. Rear cantilever 24 extending rearward. The tongue plate 3 is engaged with the assembly groove 22, and the tongue plate 3 has a body 31 and a plurality of terminal mounting grooves 32 which are recessed downward from the top surface of the body 31. The rear ends of the terminal mounting grooves 32 are convex. Defined by the platform 33. The strength of the tongue 3 can be increased by the boss portion 33 having the rear portion of the tongue 3 connected in a laterally integral manner and a thick block shape. Referring to FIG. 2, FIG. 4 and FIG. 6, the base 2 further has a plurality of first terminal passages 25 disposed on the base wall 21 and corresponding to the terminal mounting slots 32, and the first terminal passages 25 are located above the assembly slots 22 and It is in communication with the assembly groove 22, and each of the first terminal passages 25 has a relief recess 251 at a position corresponding to the boss portion 33. The base 2 further has a plurality of third terminal passages 26 located below the assembly slots 22 and corresponding to the respective third terminals 6, respectively, and the tongue plate 3 further has terminals disposed on the bottom surface of the body 31 and communicating with the respective third terminal passages 26, respectively. The groove 37 is accommodated. In addition, referring to FIG. 2, 4, 8, and 11, the rear portion of the top surface of the body 31 of the tongue plate 3 and the base 2 are located at the base wall 21 in the assembly groove 22, and a plurality of pairs of engaging slots 34 and blocks are disposed. 27. In the present embodiment, the card slot 34 is located in the tongue plate 3, and the card block 27 is located on the base 2, but the positions of the card slot 34 and the card block 27 are also interchangeable. 4, 5, 8, and 9, the tongue plate 3 further has two support portions 35 respectively connected to the rear portions of the left and right sides of the body 31 and projecting toward the rear of the assembly groove 22, and the bottom surface of each support portion 35 is one. The support surface 351 can be abutted against the surface of the circuit board 9, thereby reinforcing the support strength of the split tongue 3 and strengthening its structural strength. Moreover, each of the rear cantilever arms 24 of the base 2 has a stopper 241 protruding toward the opposite side, and the rear sides of the two supporting portions 35 of the tongue plate 3 respectively abut against the respective stoppers 241, and the bottom sides of the two rear cantilever arms 24 and the tongue plate 3 The support surface 351 can be abutted against the surface of the circuit board 9.

Referring to FIGS. 2, 6, 8, and 10, each of the first terminals 4 is fixed to the insulating unit, and has an elastic contact portion 41 corresponding to each of the terminal mounting grooves 32, and an elastic contact portion 41 extends rearward and fixed to the corresponding one. The first fixing portion 42 in the first terminal passage 25 and the first guiding portion 43 extending downward from the first fixing portion 42. The assembly is performed by inserting the first terminal passage 25 forward from the rear side of the base 2, and the front end of the elastic contact portion 41 can pass over the boss portion at the rear end of the terminal mounting groove 32 by the recessing recess 251 of the first terminal passage 25. 33, and easy to enter the terminal mounting groove 32 to complete the assembly. Referring to FIGS. 2, 3, 8, and 12, each of the second terminals 5 is fixed to the insulating unit, and is insert-molded into the tongue plate 3, and has a top surface of the body 31 exposed on the tongue plate 3 and a second contact portion 51 that is closer to the front end of the tongue plate 3 than the elastic contact portion 41 of the first terminal 4, a second guide portion 52 that protrudes downwardly from the rear end of the tongue plate 3, and a second connection portion 52 The contact portion 51 and the second extension portion 53 of the second guide portion 52 are embedded in the tongue plate 3. The second terminals 5 are five in total, wherein the second extension portion 53 and the second guide portion 52 of the intermediate terminal extend along the center line of the second contact portion 51, and the second extension portion 53 of the two left terminals is Along the center line of the corresponding second contact portion 51, it extends leftward and backward, and then is offset from the rear end toward the center line, so that the connected second guiding portion 52 is along the corresponding second contact portion 51 thereof. The center line extends, and the second extension portion 53 of the two terminals on the right side extends rightward and backward along the center line of the corresponding second contact portion 51, and is offset from the rear end toward the center line to connect it. The second guiding portion 52 extends along the center line of the corresponding second contact portion 51 to make the spacing between the second guiding portions 52 equal, and the spacing between the second extending portions 53 provides The space of the terminal mounting groove 32 is set. Referring to FIGS. 2, 8, and 12, each of the third terminals 6 is fixed to the insulating unit, and has a third contact portion 61 exposed on the bottom surface of the body 31 of the tongue plate 3 and located in the terminal receiving groove 37, and a third contact. The portion 61 extends rearwardly and fixed to the third fixing portion 62 in the corresponding third terminal passage 26, and a third guiding portion 63 extending from the third fixing portion 62 in an inverted U-shape. In this embodiment, the first terminals 4 are for transmission conforming to USB2.

Referring to FIG. 1 , FIG. 2 and FIG. 7 , the metal shell 7 is sleeved outside the insulating unit, and defines a slot 11 together with the base 2 , and has two fixing pieces 71 and two positioning pins 72 on the left and right sides for Fixed to circuit board 9. Referring to FIGS. 7 , 10 , and 12 , the terminal positioning plate 8 has two rows of through holes 81 and 82 for respectively passing through the first guiding portion 43 of the first terminal 4 and the second guiding portion 52 of the second terminal 5 . A guiding portion 43 and a second guiding portion 52 are positioned. Referring to FIGS. 4, 5 and 12, the tongue plate 3 further has a plurality of positioning grooves 36 which are disposed on the bottom side of the rear portion of the body 31 and are located behind the terminal receiving grooves 37 to correspondingly fix the third guiding portions 63.

In this embodiment, the electrical connector 1 is integrally assembled by first engaging the tongue plate 3 integrally molded with the second terminal 5 into the assembly groove 22 by the front side of the base 2, and the second terminal is at this time. The second guiding portion 52 of the 5 is not bent yet. After the third terminal 6 is inserted into the third terminal channel 26 and the terminal receiving groove 37 from the rear side of the base 2, the second guiding portion 52 is bent. After the first terminal 4 is mounted, the manner of mounting the first terminal 4 has been described above, and will not be repeated here. Then, the metal casing 7 is sleeved from the front side of the base 2 to the base 2, and the terminal positioning plate 8 is engaged with the base 2. As shown in Fig. 1, the assembled electrical connector 1 is mounted to the circuit board 9 to form a sinker type that is partially on the board and partially under the board.

In summary, the electrical connector 1 of the present invention forms a boss portion 33 at the rear end of the terminal mounting groove 32 of the tongue plate 3, so that the rear portion of the tongue plate 3 is connected in a laterally integral manner and has a thick block shape, so that the tongue plate can be added. The strength of 3, and by the recessing recess 251 of the first terminal passage 25, the front end of the elastic contact portion 41 of the first terminal 4 can pass over the boss portion 33 at the rear end of the terminal mounting groove 32, and easily enters the terminal mounting groove 32. Complete the assembly. Moreover, the supporting surface 351 of the two supporting portions 35 of the tongue plate 3 can abut against the surface of the circuit board 9, thereby reinforcing the supporting strength of the split tongue 3 and strengthening the structural strength thereof.

However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent change and modification made by the novel patent application scope and the novel description content, All remain within the scope of this new patent.

<p>1. . . Electrical connector</p><p>11. . . Slot</p><p>2. . . Pedestal</p><p>twenty one. . . Base wall</p><p>twenty two. . . Assembly slot</p><p>twenty three. . . Side wall</p><p>twenty four. . . Rear cantilever</p><p>241. . . Stoppers</p><p>25. . . First terminal channel</p><p>251. . . Retreat notch</p><p>26. . . Third terminal channel</p><p>27. . . Block</p><p>3. . . Tongue</p><p>31. . . Ontology</p><p>32. . . Terminal mounting slot</p><p>33. . . Boss</p><p>34. . . Card slot</p><p>35. . . Support</p><p>351. . . Support surface</p><p>36. . . Positioning slot</p><p>37. . . Terminal receiving slot</p><p>4. . . First terminal</p><p>41. . . Elastic contact</p><p>42. . . First fixed part</p><p>43. . . First guide</p><p>5. . . Second terminal</p><p>51. . . Second contact</p><p>52. . . Second guide</p><p>53. . . Second extension</p><p>6. . . Third terminal</p><p>61. . . Third contact</p><p>62. . . Third fixed part</p><p>63. . . Third guide</p><p>7. . . Metal housing</p><p>71. . . Fixed piece</p><p>72. . . Locating pin</p><p>8. . . Terminal positioning plate</p><p>81. . . perforation</p><p>82. . . perforation</p><p>9. . . Circuit board</p><p>91. . . gap</p>

1 is a perspective view showing a preferred embodiment of the present invention and a circuit board;

Figure 2 is an exploded perspective view of Figure 1;

Figure 3 is an exploded perspective view showing the tongue plate and the second terminal of the preferred embodiment;

Figure 4 is an exploded perspective view showing the tongue plate and the base of the preferred embodiment;

Figure 5 is a combination diagram of Figure 4;

Figure 6 is a partial exploded perspective view similar to Figure 5, in which the partial area is removed;

Figure 7 is a partially exploded perspective view showing the preferred embodiment;

Figure 8 is a plan view of Figure 1;

Figure 9 is a cross-sectional view taken along line IX-IX of Figure 8;

Figure 10 is a cross-sectional view taken along line XX of Figure 8;

Figure 11 is a cross-sectional view taken along line XI-XI of Figure 8;

Figure 12 is a cross-sectional view taken along line XII-XII of Figure 8.