TWM601477U - Transmission wafer of an electrical connector - Google Patents

Abstract

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Description

Transmission piece of electric connector

The model relates to an electrical connector, in particular to a transmission sheet of the electrical connector.

The transmission sheet used in the existing electrical connector includes a terminal, a plastic body, and a metal shielding sheet arranged on one side of the plastic body. In order to connect the metal shielding sheet to the grounding terminal, many tentacles are folded to contact the grounding terminal. Under the current requirements for high-density and miniaturized high-speed connectors, the mechanism space is very small. The bending and chamfering of the metal shielding sheet The feasibility of processes such as cutting, cutting and forming has also become a major test.

In view of this, the present invention provides a transmission sheet of an electrical connector to overcome the above-mentioned drawbacks, thereby improving the shielding effect of the shielding element, and at the same time improving the reusability of the shielding element.

The present application provides a transmission sheet of an electrical connector for mating with a mating connector. The transmission sheet includes: a shielding element; and a plurality of terminals arranged in a row, connected to the shielding element, wherein the shielding element includes: A metal piece; a plastic piece covering the metal piece; a first conductive layer covering at least the plastic piece; and a second conductive layer covering at least a part of the first conductive layer.

Further, the first conductive layer is arranged to surround the metal part and the plastic part.

Further, the second conductive layer is provided at the end portion of the shielding element.

Further, the plastic part includes a plastic flat plate part and a plurality of protrusions extending from one end of the plastic flat plate part, and the second conductive layer covers the plurality of protrusions.

Further, the metal piece includes a metal flat plate part covered by the plastic flat plate part and a tongue plate part extending from one end of the metal flat plate part, and the tongue plate part is correspondingly provided on a side surface of the plurality of protruding parts. The second conductive layer covers the tongue portion.

Further, the first conductive layer is a nickel-plated layer.

Further, the second conductive layer is a gold-plated layer or a palladium-nickel-plated layer.

Further, the second conductive layer is used to make electrical contact with at least one of the following: a plurality of terminals of the transmission sheet of the electrical connector; corresponding terminals of the butt connector; and the shield sheet of the butt connector.

Further, the second conductive layer covers the entire first conductive layer.

The present application also provides an electrical connector, including: a housing; and a plurality of the above-mentioned transmission pieces, and these transmission pieces are inserted in the housing.

The arrangement of the transmission sheet of the present application provides the shielding element with better flatness and wear resistance, so that the shielding element can be plugged and unplugged multiple times and its service life can be prolonged.

The technical solutions in the embodiments of the present application will be described in detail below in conjunction with the drawings in the embodiments of the present application. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other if there is no conflict.

As shown in Fig. 1, the present invention discloses an electrical connector 100, which is, for example, a high-speed (high frequency) connector applied to a server or a switch, but the present invention is not limited to this. Wherein, the electrical connector 100 can be used to be detachably (along a plugging direction S) plugged into a mating connector (not shown). To facilitate the description of the present invention, the electrical connector 100 is defined with a width direction W and a height direction H that are perpendicular to the insertion and removal direction S, and the width direction W and the height direction H are perpendicular to each other.

As shown in FIGS. 1 and 2, the electrical connector 100 includes a housing 1 and a plurality of transmission sheets 2 inserted in the housing 1, and the plurality of transmission sheets 2 are stacked in the width direction W in this embodiment The ground is in a row. It should be noted that although the transmission sheet 2 is matched with the housing 1 in this embodiment, in other embodiments not shown in the present invention, the transmission sheet 2 can also be used alone or with other components use.

As shown in FIGS. 1 and 2, the housing 1 includes a plug-in portion 11 that is substantially rectangular parallelepiped and two positioning plates 12 extending from the top and bottom ends of the plug-in portion 11 along the plug-in direction S respectively. Wherein, the insertion portion 11 is formed with multiple rows of butting terminal holes 111 in a penetrating shape on its front surface, and each row of butting terminal holes 111 corresponds to a transmission sheet 2 in position; that is, each row of butting terminal holes 111 The arrangement direction is parallel to the height direction H. As shown in FIG. 2, the plurality of transmission sheets 2 are inserted into the insertion portion 11 of the housing 1 and buckled to the two positioning plates 12 of the housing 1.

As shown in FIG. 3, the transmission sheet 2 for mating with the mating connector of the present invention includes an insulating frame 21; a plurality of terminals 22 arranged in a row on the insulating frame 21 (as described below, these terminals include grounding terminals). 22a and a differential signal terminal pair 22b); and a shielding element 23 provided on one side of the insulating frame 21. As shown in FIG. 4, the shielding element 23 includes a metal part 231, a plastic part 232, a first conductive layer 233 and a second conductive layer 234. The plastic part 232 covers the metal part 231. The first conductive layer 233 covers at least the plastic part 232. The second conductive layer 234 covers at least a part of the first conductive layer 233. The plastic part 232 can be fixed to the metal part 231 by injection molding. For ease of illustration, only the first conductive layer 233 and the second conductive layer 234 are shown in FIG. 4, and are omitted in other drawings.

Specifically, as shown in FIG. 4, the first conductive layer 233 may be arranged to surround the plastic part 232 and the metal part 231 so as to be able to conduct electricity as a whole to play a shielding effect and strengthen the structural strength of the plastic part 232. In addition, the second conductive layer 234 may be provided at the end portion P of the shielding element 23, and a plurality of terminals and/or corresponding terminals or shielding pieces of the mating connector may abut the second conductive layer 234 at the end portion P on. In general, the second conductive layer 234 may be used to make electrical contact with at least one of the following: a plurality of terminals of the transmission sheet 2 of the electrical connector 100; corresponding terminals of the mating connector; and a shielding sheet of the mating connector.

With this arrangement, the plastic part 232 can be a partially conductive conductive plastic or a completely non-conductive material. The metal part can be made of metal such as copper. The plastic part 232 and the metal part 231 are stacked together as shown in the figure. As shown in 4, the first conductive layer 233 and the second conductive layer 234 are combined (for example, electroplated) around the connected plastic part 232 and the metal part 231 to form an integrated shielding element. The combination of the conductive layers is not specifically limited. It is conceivable to use other combinations that can achieve the combined effect. Because the shielding element combines plastic and metal parts, it has both the rigidity of metal and the plasticity of plastic, thereby increasing the applicability of structural applications.

Preferably, the first conductive layer 233 may be a nickel-plated layer, and the second conductive layer 234 may be a gold-plated layer or a palladium-nickel-plated layer.

In the present application, when only the first conductive layer 233 surrounding the metal part 231 and the plastic part 232 is provided, since the surface of the nickel-plated first conductive layer 233 is relatively rough and not wear-resistant, the terminal and the shield Part of the plating layer may fall off during the insertion and removal of the component 23, resulting in poor electrical contact. In view of this, in the embodiment of the present application, at the portion where the shielding element is connected to the terminal, such as the portion P defined by the dotted line shown in FIG. 5 and FIG. 6, a gold plating or plating covering the first conductive layer 233 is provided. The second conductive layer 234 of palladium-nickel provides the shielding element 23 with better flatness and wear resistance at this connection part, thereby enabling multiple insertion and removal of the shielding element and prolonging its service life.

In the examples shown in FIGS. 5 to 7, the shielding element 23 is used for abutting/lap fitting with a plurality of grounding terminals. In FIG. 6, the mating of the grounding terminal and the shielding element 23 is specifically shown, but this application The application of the shielding element 23 is not limited to this. In addition, in other unshown embodiments, the shielding element 23 provided with the second conductive layer 234 at the end portion P can also pass through the first with good wear resistance. The two conductive layers 234 are connected to the corresponding ground terminal of the mating connector or to the shielding sheet of the mating connector. The specific shape and area size of the end portion P of the shielding element 23 of the present application are not limited, and can be adjusted according to the above-mentioned different applications. In short, the second conductive layer 34 only needs to be used for connecting with other external metal structures. Part of it can be covered with the second conductive layer 234 to improve the overall wear resistance. In addition, in addition to covering the end portion P of the shielding element 23 with the second conductive layer 234, the second conductive layer 234 can also surround the entire shielding element 23, that is, be provided on the entire first conductive layer 233. For further explanation, as shown in FIG. 7, the specific structures of the plastic part 232 and the metal part 231 are more clearly shown. The plastic part 232 includes a plastic flat plate part 2321 and a plurality of plastic parts extending from one end of the plastic flat plate part 2321. Projection 2322. The second conductive layer 234 covers the plurality of protrusions 2322. In addition, the metal piece 231 includes a flat metal part 2311 covered by a flat plastic part 2321 and a tongue part 2312 extending from one end of the flat metal part 2311. The tongue part 2312 is correspondingly disposed on one side surface of the plurality of protruding parts 2322. The second conductive layer 234 also covers the tongue portion 2312. It should be noted that for the case where the end portion P of the shielding element is used to connect to the corresponding terminal of the butt connection (as shown in Figure 6), it is conceivable how much the end portion P protrudes in the direction of the butt connector A protruding portion 2322 (the specific form of the protruding portion is not limited) to overlap with the corresponding terminal of the mating connector, and the second conductive layer 234 and possibly the first conductive layer are also covered around the protruding portion 2322 233.

In this application, although it is mentioned that the second conductive layer 234 may be a gold-plated layer or a palladium-nickel-plated layer, it is only given as an example and is not limited to this. It can have good conductivity and good wear resistance. Either metal or metal alloy can be used for the second conductive layer 234.

The foregoing descriptions are only preferred embodiments of the application and are not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of this application shall be included in the protection scope of this application.

100: electrical connector 1: shell 11: Socket 111: Butt terminal hole 12: positioning plate 2: Transmission piece 21: Insulated frame 22: Terminal 22a: Ground terminal 22b: Differential signal terminal pair 23: Shielding element 231: Metal Parts 2311: Flat metal part 2312: tongue plate 232: plastic parts 2321: Plastic Flat Panel 2322: protrusion 233: first conductive layer 234: second conductive layer H: height direction P: End part S: plugging direction W: width direction

The accompanying drawings in the specification are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application and do not constitute an undue limitation of the application. In the attached picture:

Figure 1 is a perspective view of an electrical connector according to the present invention;

Figure 2 is an exploded schematic diagram of the electrical connector of Figure 1;

3 is a schematic plan view of a transmission piece of the electrical connector in FIG. 2;

Fig. 4 is a schematic partial cross-sectional view of the shielding element of Fig. 3; and

Fig. 5 is a schematic diagram of a shielding element of another example;

Fig. 6 is a partial enlarged view of the shielding element of Fig. 5, which shows that the shielding element is overlapped with a plurality of ground terminals.

Fig. 7 is a schematic diagram of another example of a shielding element, in which specific structures of plastic parts and metal parts are shown.

2: Transmission piece

21: Insulated frame

22: Terminal

22a: Ground terminal

22b: Differential signal terminal pair

23: Shielding element

Claims (10)

A transmission piece (2) of an electrical connector for mating with a mating connector. The transmission piece (2) includes: A shielding element (23); and Multiple terminals arranged in a row are connected to the shielding element (23), Among them, the shielding element (23) includes: A metal piece (231); A plastic piece (232) covering the metal piece (231); A first conductive layer (233) covering at least the plastic part (232); and A second conductive layer (234) covers at least a part of the first conductive layer (233). The transmission sheet according to claim 1, wherein the first conductive layer (233) is arranged to surround the metal part (231) and the plastic part (232). The transmission sheet according to claim 1 or 2, wherein the second conductive layer (233) is provided at an end portion (P) of the shielding element (23). The transmission sheet according to claim 3, wherein the plastic part (232) includes a plastic flat part (2321) and a plurality of protrusions (2322) extending from one end of the plastic flat part (2321), the The second conductive layer (233) covers the protrusions (2322). The transmission sheet according to claim 4, wherein the metal piece (231) includes a flat metal part (2311) covered by the flat plastic part (2321) and a flat metal part (2311) extending from one end of the flat metal part (2311) A tongue plate portion (2312), the tongue plate portion (2312) is correspondingly disposed on a side surface of the protruding portions (2322), and the second conductive layer (233) covers the tongue plate portion (2312). The transmission sheet according to claim 1, wherein the first conductive layer is a nickel-plated layer. The transmission sheet according to claim 1, wherein the second conductive layer is a gold-plated layer or a palladium-nickel-plated layer. The transmission sheet according to claim 1, wherein the second conductive layer (233) is used for electrical contact with at least one of the following: The terminals of the transmission piece (2) of the electrical connector; A corresponding terminal of the mating connector; and A shielding piece of the mating connector. The transmission sheet according to claim 1, wherein the second conductive layer (234) covers the entire first conductive layer (233). An electrical connector, including: A housing (1); and A plurality of transmission sheets (2) according to any one of claims 1 to 9 are inserted in the casing (1).

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