TWI420763B - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an electrical connector having a high frequency signal that can be transmitted.

A conventional technique related to the present invention can be referred to Japanese Patent Application Laid-Open No. D1290558, issued Jan. 9, 2007, which discloses a C-type HDMI connector comprising: an insulative body held on an insulative body. 19 conductive terminals and a shielding shell covering the periphery of the insulating body. The insulating body is provided with a horizontally extending tongue plate, and the lower surface of the tongue plate is provided with a plurality of terminal receiving grooves arranged at intervals. The conductive terminal is provided with a holding portion that is fixed to the insulating body, a welded portion that extends out of the insulating body, and a contact portion that is received in the terminal receiving groove. Viewed from the abutting side of the HDMI connector, the contact portions of the conductive terminals are horizontally disposed in a row on the lower surface of the tongue.

According to the HDMI standard issued by the HDMI Association, the 19 conductive terminals include three pairs of differential signal terminals (D+, D-) for transmitting data, and three ground terminals (G) respectively for each pair of differential signal terminals. A pair of clock signal terminals (Clock+, Clock-), and a ground terminal (G) matched with the pair of clock signal terminals, in addition to CEC signal terminals, SCL signal terminals, SDA signal terminals, Reserved signal terminals, and + 5V power terminal and hot plug detection terminal.

From the above analysis, it is known that the functional connection of the conventional C-type HDMI connector conductive terminal The variety and corresponding wafer design are also complex, resulting in higher cost of using this type of connector interface. In addition, there is only one grounding terminal (G) between two adjacent pairs of differential signal terminals (D+, D-), and relatively large crosstalk is easily generated between the two pairs of differential signal terminals (D+, D-) (Cross-talk) ).

In summary, it is necessary to design an electrical connector for improvement to overcome the above drawbacks.

In view of the above, the purpose of this creation is to provide a lower cost electrical connector.

Another object of the present invention is to provide an electrical connector with strong anti-interference capability.

In order to achieve the above objective, the present invention includes a main body portion, a plurality of conductive terminals fixed on the main body portion, and a metal shielding shell covering the periphery of the main body portion, the shielding housing being configured to receive the mating plug The accommodating space, the body portion is provided with a tongue plate extending into the accommodating space, the conductive terminal comprises a flat-shaped contact portion, and the contact portions are arranged in a row on the same side of the tongue plate, and the conductive terminals are only It includes two types: ground terminal and complex pair differential signal terminal.

In order to achieve the above other object, the present invention adopts the following technical solution: an electrical connector comprising: a body portion; a plurality of conductive terminals fixed on the body portion; and a metal shielding shell covering the periphery of the body portion, the shielding The housing is provided with a receiving space for receiving the mating plug, the body portion is provided with a tongue plate extending into the receiving space, and the conductive terminal is provided with a contact portion extending to the tongue plate, and the contact portions are arranged in a row On the same side of the tongue plate, the conductive terminal includes only a plurality of ground terminals and a plurality of pairs of differential signal terminals, wherein two ground terminals are disposed between two adjacent pairs of differential signal terminals.

Compared with the prior art, the present invention has the following beneficial effects: Firstly, the conductive terminals of the present electrical connector only include two types of grounding terminals and differential signal terminals, and the functional design corresponding to the conductive terminals is relatively simple, the design is easy and the cost is relatively simple. Low; another, two adjacent ground terminals are provided between the two pairs of differential signal terminals, thereby widening the distance between the two pairs of differential signal terminals, the mask effect is good, and the anti-interference ability is strong.

100‧‧‧Electrical connector

1‧‧‧ Body Department

11‧‧‧ base

12‧‧ ‧ tongue

121‧‧‧ upper surface

122‧‧‧ lower surface

1221‧‧‧Terminal receiving slot

2‧‧‧Electrical terminals

21‧‧‧First pair of differential signal terminals

22‧‧‧Second pair of differential signal terminals

23‧‧‧ third pair of differential signal terminals

24‧‧‧ fourth pair of differential signal terminals

G, G1, G2‧‧‧ grounding terminal

25‧‧‧ Holding Department

26‧‧‧Contacts

27‧‧‧Weld Department

28‧‧‧Connecting Department

3‧‧‧Shaded housing

30‧‧‧ accommodating space

31‧‧‧ top wall

32‧‧‧ bottom wall

33‧‧‧Two side walls

34‧‧‧Bevel

38‧‧‧ front housing

39‧‧‧ Rear housing

The first figure is a three-dimensional combination of the original electrical connector.

The second figure is a front view of the present electrical connector.

The third figure is an exploded perspective view of the present electrical connector.

The fourth figure is an exploded perspective view of another angle of the present electrical connector.

The fifth figure is a three-dimensional combination diagram of the conductive terminals of the present electrical connector.

Figure 6 is a perspective view of a conductive terminal in another embodiment of the present electrical connector.

Referring to the first to fifth figures, the present electrical connector 100 includes a body portion 1, a plurality of conductive terminals 2 held on the body portion 1, and a metal shielding case 3 covering the body portion 1, the shielding The housing 3 is provided with a housing space 30 for receiving a mating plug (not shown).

The body portion 1 includes a base portion 11 and a tongue plate 12 that projects forwardly from the base portion 11. The tongue plate 12 extends in a horizontal direction, and includes an upper surface 121 and a lower surface 122 opposite to the upper surface 121. The lower surface 122 is provided with a plurality of terminal receiving grooves 1221 arranged at intervals to separate the conductive terminals 2 Open to prevent crosstalk from occurring in contact with each other. In the embodiment, the body portion 1 is made of an insulating material, and the body portion 1 and the tongue plate 12 are Integrated into one. However, in other embodiments, the tongue 12 can be disposed separately from the base 11 and then joined together in an assembled manner.

Referring to the third and fifth figures, the conductive terminal 2 includes only two types: a ground terminal and a plurality of pairs of differential signal terminals, and the plurality of pairs of differential signal terminals includes four pairs of differential signal terminals, wherein the four The differential signal terminal includes a first pair of differential signal terminals 21, a second pair of differential signal terminals 22, a third pair of differential signal terminals 23, and a fourth pair of differential signal terminals 24. Each pair of differential signal terminals includes a positive signal terminal and a negative signal terminal. Each pair of differential signal terminals 21, 22, 23, 24 is located between two adjacent ground terminals G, thereby attenuating interference between two adjacent pairs of differential signal terminals. The first pair, the second pair and the third pair of differential signal terminals 21, 22, 23 are used for transmitting data in one direction; and the fourth pair of differential signal terminals 24 are mixed signal terminals (Hibrid Channel) for transmitting data in both directions. To achieve faster transfer speeds. In addition, the total number of the conductive terminals 2 of the present invention is 13 and the number is small, so that the volume and material cost of the electrical connector 100 can be reduced to adapt to the development trend of miniaturization of electronic products. In addition, the conductive terminal 2 includes only two types, and the corresponding function of the conductive terminal 2 is relatively simple and uncomplicated, thereby facilitating the design of the circuit board or the wafer to be matched, and facilitating the popularization and utilization of the electrical connector 100. In addition, the only 13 conductive terminals 2 include four pairs of differential signal conducting terminals 21, 22, 23, 24, which can achieve faster data transmission speed.

Referring to the third embodiment, each of the conductive terminals 2 is provided with a holding portion 25 fixed to the base portion 11 and a flat plate extending forward from the holding portion 25 and received in the terminal receiving groove 1221. The contact portion 26, the welded portion 27 bent from the holding portion 25, and the connecting portion 28 connecting the holding portion 25 and the welded portion 27, the contact portion 26 and the welded portion 27 Each extends in the horizontal direction, and the connecting portion 28 extends in the vertical direction. Referring to the second figure, the contact portions 26 are arranged in a row in the horizontal direction as seen from the mating direction of the electrical connector 100. And the contact portion 26 is located on the same side of the tongue plate 12 (in the present embodiment, the lower side of the tongue plate 12), so that the thickness of the tongue plate 12 is reduced, and the overall thickness of the electrical connector 100 is also reduced. The contact portion 26 is exposed downwardly in the receiving space 30 to facilitate electrical connection with the mating plug. The soldering portion 27 is soldered to the circuit board in a surface mount manner.

In the present embodiment, the conductive terminal 2 is stamped from a metal strip and attached to the body portion 1 in an assembled manner. However, in other embodiments, the tongue plate 12 may be replaced by a printed circuit board (PCB). In this case, a gold finger may be provided on the surface of the printed circuit board instead of the contact portion 26, and one end of the adapter terminal is used. The connection is made to the contact portion 26, and the other end of the adapter terminal is soldered to the printed circuit board, and the purpose of the present invention can also be achieved.

The shielding shell 3 is formed by stamping and bending a piece of metal material. The shielding housing 3 includes a front housing 38 and a rear housing 39 that is fastened to the front housing 38. The front housing 38 includes a top wall 31, a bottom wall 32, and two side walls 33. The receiving space 30 Located between the top wall 31 and the bottom wall 32, the two ends of the bottom wall 32 and the two side walls 33 are respectively connected by a slope 34. The inclined surface 34 is used to prevent other mismatched plugs from being inserted into the receiving space 30.

Referring to FIG. 6 , as a further improvement of the first embodiment of the present invention, in the second embodiment of the present invention, the third pair of differential signal terminals 23 and the fourth pair of differential signal terminals 24 are shown. There are two ground terminals G1, G2 between them. The ground terminals G1 and G2 are respectively disposed adjacent to the third and fourth pairs of differential signal terminals 23, 24. In this case, the distance between the third and fourth pairs of differential signal terminals 23, 24 can be increased. At the same time, the two ground terminals G1, G2 can have less interference between the third and fourth pairs of differential signal terminals 23, 24.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the foregoing embodiments, and those skilled in the art will be able to make equivalent modifications or variations in accordance with the spirit of the present invention. It should be covered by the following patent application.

2‧‧‧Electrical terminals

21‧‧‧First pair of differential signal terminals

22‧‧‧Second pair of differential signal terminals

23‧‧‧ third pair of differential signal terminals

24‧‧‧ fourth pair of differential signal terminals

G‧‧‧ Grounding terminal

Claims (16)

An electrical connector includes: a body portion, the body portion is provided with a tongue plate; a plurality of conductive terminals, the conductive terminal includes only two types: a ground terminal and a plurality of pairs of differential signal terminals, and the plurality of pairs of differential signal terminals includes a third pair of differential signal terminals for transmitting data in one direction, and a fourth pair of differential signal terminals for transmitting data bidirectionally, wherein the third pair of differential signal terminals Two grounding terminals are continuously disposed between the fourth pair of differential signal terminals; the conductive terminals are provided with contact portions extending to the tongue plate, the contact portions are arranged in a row on the same side of the tongue plate; and the metal shielding shell The cover body is wrapped around the body portion, and the shielding case is provided with a receiving space for receiving the mating plug, and the tongue plate of the body portion extends into the receiving space. The electrical connector of claim 1, wherein the plurality of differential signal terminals further includes a first pair of differential signal terminals and a second pair of differential signal terminals, wherein the first pair of differential signal terminals and the second pair of differential terminals The signal terminal and the third pair of differential signal terminals are respectively located between the adjacent two ground terminals. The electrical connector of claim 2, wherein the four pairs of differential signal terminals are a first pair of differential signal terminals, a second pair of differential signal terminals, a third pair of differential signal terminals, and a fourth pair of differential signals. The terminal, wherein the conductive terminals are arranged in the order of: a ground terminal, a first pair of differential signal terminals, a ground terminal, a second pair of differential signal terminals, a ground terminal, a third pair of differential signal terminals, a ground terminal, and a connection Ground terminal, fourth pair of differential signal terminals. The electrical connector of claim 1, wherein the two ground terminals are adjacent to each other and the two ground terminals are respectively disposed adjacent to the adjacent two pairs of differential signal terminals. The electrical connector of claim 1, wherein the two pairs of differential signal terminals comprise a pair of mixed signal terminals that can be used to transmit data in both directions. The electrical connector of claim 1, wherein the body portion is made of an insulating material, the body portion includes a base, and the tongue plate protrudes forward from the base. The electrical connector of claim 6, wherein the tongue plate comprises an upper surface and a lower surface opposite to the upper surface, and the lower surface is provided with a plurality of terminal receiving grooves arranged at intervals, the contact portion It is housed in these terminal receiving slots. The electrical connector of claim 6, wherein the tongue plate is integrally formed with the base. The electrical connector of claim 6, wherein the tongue plate is disposed apart from the base portion, and then the two are joined together in an assembled manner. The electrical connector of claim 1, wherein the conductive terminal comprises a holding portion fixed to the body portion and a welded portion bent from a rear end of the holding portion; the contact portion is self-holding portion The front end is extended forward, and the contact portion and the welded portion both extend in the horizontal direction. The electrical connector of claim 10, wherein the conductive terminal is provided with a connection portion connecting the retaining portion and the welded portion, the connecting portion extending in a vertical direction. An electrical connector includes: a body portion, the body portion is provided with a base and a tongue of the protruding base; a plurality of conductive terminals, the conductive terminal only includes a plurality of grounding terminals and the first and second The third and fourth pairs of differential signal terminals, and the order of the conductive terminals is: a ground terminal, a first pair of differential signal terminals, a ground terminal, a second pair of differential signal terminals, a ground terminal, and a third pair of differential signals a terminal, a grounding terminal, a grounding terminal, and a fourth pair of differential signal terminals, wherein the third pair of differential signal terminals are used for transmitting data in one direction, and the fourth pair of differential signal terminals are used for bidirectional transmission of data, wherein the third pair of differential signals Two grounding terminals are continuously disposed between the terminal and the fourth pair of differential signal terminals, and the first pair of differential signal terminals, the second pair of differential signal terminals, and the third pair of differential signal terminals are respectively located between the adjacent two ground terminals; The conductive terminal is provided with a contact portion extending to the tongue plate, the contact portions are arranged on the same side of the tongue plate in a row; and the metal shielding shell is wrapped around the periphery of the tongue plate, and the shielding shell is provided The accommodating space includes a top wall, a bottom wall and two side walls, and the accommodating space is located between the top wall and the bottom wall, wherein the two side walls and the bottom wall Inter connected by a ramp. The electrical connector of claim 12, wherein the ground terminal has the same structure as the differential signal terminal. The electrical connector of claim 12, wherein the body portion is made of an insulating material, the tongue plate includes an upper surface and a lower surface opposite to the upper surface, and the lower surface is provided with a plurality of intervals The terminal receiving slots are arranged, and the contact portions are received in the terminal receiving slots. The electrical connector of claim 12, wherein the tongue plate is integrally formed with the base. The electrical connector of claim 12, wherein the tongue plate is disposed apart from the base portion, and then the two are joined together in an assembled manner.