CN108448292B - Electrical connector - Google Patents

Abstract

The invention discloses an electric connector, comprising: the terminal assembly comprises a plurality of signal terminals and a plurality of grounding terminals which are arranged at intervals with the signal terminals; each grounding terminal is in a sheet shape and comprises a body part, a first positioning part extending from one side of the body part, a second positioning part and a third positioning part extending from the other side of the body part, and a front cover plate which is clamped with a plurality of first positioning parts. Through setting up the front shroud of the first location portion of joint a plurality of ground terminal to can be with a plurality of ground terminal integral connection, and then the interval sets up the signal terminal between ground terminal also by fixed sign indicating number together, improved the stability of whole terminal assembly.

Description

Electrical connector

Technical Field

The invention relates to a high-speed electrical connector, and in particular to a high-speed electrical connector with a fixed grounding terminal structure.

Background Art

High-speed connectors, including backplane connectors, board-to-board connectors, and I/O connectors, are also developing towards higher speeds. To increase the transmission rate of connectors, it is necessary to ensure the signal quality at higher frequency transmission rates. The quality of the signal on the transmission path is signal integrity, and the main indicators include crosstalk, loss, and impedance.

The structure of the existing high-speed backplane connector is generally to fix the ground shielding sheet and the plastic support sheet with signal terminals together through plastic interference. However, during manufacturing, transportation, and high-speed vibration, the ground shielding sheet and the plastic support sheet can easily become loose, causing unstable high-speed signal transmission. Therefore, it is necessary to improve it.

Summary of the invention

An object of the present invention is to provide an electrical connector with a more stable terminal structure.

To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electrical connector, comprising: a terminal assembly, a plastic body assembly for fixing the terminal assembly, and a shell assembly for accommodating the terminal assembly and the plastic body assembly, wherein the terminal assembly comprises a plurality of signal terminals and a plurality of grounding terminals spaced apart from the plurality of signal terminals; each of the grounding terminals is in the shape of a thin sheet, comprising a main body portion, a first positioning portion extending from one side of the main body portion, and a second positioning portion and a third positioning portion extending from the other side of the main body portion, and the electrical connector further comprises a front cover plate for clamping the plurality of first positioning portions.

Furthermore, the electrical connector further comprises a rear cover plate clamped with a plurality of second positioning portions, and the front cover plate has a similar structure to the rear cover plate.

Furthermore, the plastic body assembly includes a plastic piece fixedly connected to a plurality of third positioning portions.

Furthermore, the front cover plate includes a cover plate body, a plurality of elastic connecting parts arranged on the cover plate body, and a plurality of elastic abutting parts located on both sides of the cover plate body, and the cover plate body is arranged close to the terminal assembly.

Furthermore, the first positioning portion of the ground terminal is embedded and matched with the elastic connecting portion.

Furthermore, the elastic connecting portion includes a through slot and two first and second elastic sheets extending from the wall of the through slot and arranged opposite to each other. The first and second elastic sheets are staggered so that the first positioning portion can smoothly extend into the through slot and abut against the first and second elastic sheets respectively.

Furthermore, the elastic abutment portion includes a third elastic sheet, and the third elastic sheet abuts against the cover plate body by utilizing its own elastic force.

Furthermore, the front cover plate and the rear cover plate are arranged opposite to each other and are respectively located on two sides of the ground terminal.

Furthermore, the ground terminal also includes a welding end for welding connection.

Furthermore, the ground terminal also includes a plug-in end arranged away from the welding end.

The beneficial effect of the present invention is that by providing a front cover plate that clamps the first positioning parts of several grounding terminals, several grounding terminals can be connected as a whole, and then the signal terminals spaced between the grounding terminals are also fixed together, thereby improving the stability of the entire terminal assembly.

The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic diagram of a first three-dimensional structure matching of a plastic body assembly and a terminal assembly.

FIG. 3 is a schematic diagram of a second three-dimensional structure coordination of the plastic body assembly and the terminal assembly.

FIG. 4 is a schematic diagram of the matching structure of the plastic body component, the strap, the front cover plate, and the rear cover plate.

FIG5 is a schematic diagram of the matching structure of the terminal assembly, the strap, the front cover, the rear cover, and the plastic part.

FIG6 is a schematic diagram of the matching structure of the ground terminal, the strap, the front cover, the rear cover, and the plastic part.

FIG. 7 is a schematic structural diagram of a grounding terminal.

FIG8 is a schematic structural diagram of the front cover.

DETAILED DESCRIPTION

The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

Referring to FIGS. 1 to 8 , the present invention discloses an electrical connector 100, including a terminal assembly 1, a plastic body assembly 2 for fixing the terminal assembly 1, and a housing assembly 3 for accommodating the terminal assembly 1 and the plastic body assembly 2. The terminal assembly 1 can be used to electrically connect other connectors, the plastic body assembly 2 can fix the terminal assembly 1 so that the terminal assembly 1 will not be deformed after frequent plugging, and the housing assembly 3 can protect the terminal assembly 1 and the plastic body assembly 2 from being scratched, and can improve the stability of the entire electrical connector 100. The terminal assembly 1 and the plastic body assembly 2 form an integral part, and the integral part is located at one end of the housing assembly 3.

The housing assembly 3 includes a first housing 4 and a second housing 5 and a third housing 6 that are engaged with the first housing 4. The first housing 4, the second housing 5 and the third housing 6 together form a receiving space for receiving the terminal assembly 1 and the plastic body assembly 2. Specifically, the first housing 4 is in the shape of a thin-walled trough, which is used to receive the plastic body assembly 2 and the terminal assembly 1 as a whole. It has two parallel side walls 7 and a bottom wall (not shown) connecting the two side walls 7. The second housing 5 vertically connects the two side walls 7 and the bottom wall to close the integral part formed by the plastic body assembly 2 and the terminal assembly 1. A welding portion 9 extends from one side of the two side walls 7, and the welding portion 9 can be inserted and matched with the third housing 6 to limit the movement of the third housing 6.

The first shell 4 is also provided with a plurality of arc-shaped protrusions 10, and the second shell 5 and the third shell 6 are respectively provided with through holes 11 that can be snap-fitted with the arc-shaped protrusions 10. The arc-shaped protrusions 10 are elastic, so that they can be squeezed by the walls of the third shell 6 and the second shell 5 to extend into the through holes 11. When the arc-shaped protrusions 10 extend into the through holes 11, the arc-shaped protrusions 10 are no longer squeezed by the walls of the third shell 6 and the second shell 5, so that they can be reset by their own elasticity. After being reset, the arc-shaped protrusions 10 abut against the inner wall of the through hole 11, so that the first shell 4, the second shell 5 and the third shell 6 can be detachably connected.

The third housing 6 includes a connecting portion 12 for receiving the plastic body assembly 2 . The connecting portion 12 can ensure that the plastic body assembly 2 and the terminal assembly 1 are stably disposed as a whole within the housing assembly 3 , thereby improving the stability of the entire electrical connector 100 .

The terminal assembly 1 includes a plurality of signal terminals 13 and a plurality of ground terminals 14 spaced apart from the signal terminals 13. The signal terminals 13 are fixed by the plastic body assembly 2 and neatly arranged with the ground terminals 14. The signal terminals 13 are not in contact with the ground terminals 14. The signal terminals 13 are used to transmit signals, and the ground terminals 14 can achieve a shielding effect, so that the signal terminals 13 can transmit signals at high speed. The ground terminals 14 are hollow structures, so that the contact area can be reduced, heat dissipation is facilitated, and the weight of the ground terminals is reduced, so that the overall weight of the electrical connector 100 is reduced, and it is easy to carry.

The present invention further provides a structure of a ground terminal 14 , which can both increase the shielding effect and be closely arranged with the signal terminal 13 , thereby improving the overall stability of the terminal assembly 1 .

Each of the grounding terminals 14 includes a body 15, a plug-in portion 16 and a first positioning portion 17 extending from one side of the body 15, and a second positioning portion 18 and a third positioning portion 19 extending from the other side of the body 15. The electrical connector 100 also includes a front cover plate 20 clamped with a plurality of first positioning portions 17 and a rear cover plate 21 clamped with a plurality of second positioning portions 18. The plastic body assembly 2 includes a plastic part 22 fixedly connected with a plurality of third positioning portions 19. The front cover plate 20 and the rear cover plate 21 are arranged opposite to each other and are respectively located on both sides of the grounding terminal 14. The first positioning portion 17, the second positioning portion 18 and the third positioning portion 19 are all in the shape of thin sheets, and are used to be embedded and matched with the corresponding front cover plate 20, rear cover plate 21, and plastic part 22. The first positioning portion 17 can extend into the front cover plate 20 and abut against the front cover plate 20, and the second positioning portion 18 can extend into the rear cover plate 21 and abut against the rear cover plate 21. The third positioning portion 19 is embedded in and fixedly connected to the plastic part 22, so that the plastic part 22 can arrange the grounding terminals 14 at a certain distance, which has the function of stabilizing the grounding terminals 14. The front cover 20, the rear cover 21, and the plastic part 22 can fix the grounding terminals 14 and increase the overall stability of the terminal assembly 1.

The main body 15 includes at least one supporting piece (not numbered) for fixedly connecting the plug-in portion 16, the first positioning portion 17, the second positioning portion 18, and the third positioning portion 19. The grounding terminal 14 also includes a welding end 23 disposed away from the plug-in end, and the welding end 23 can weld the entire electrical connector 100 to the motherboard.

The structure of the front cover plate 20 is similar to that of the rear cover plate 21, so only the structure of the front cover plate 20 is described in this embodiment. Specifically, the front cover plate 20 includes a cover plate body 24, a plurality of elastic connecting parts 25 arranged on the cover plate body 24, and a plurality of elastic abutting parts 26 located on both sides of the cover plate body 24, and the cover plate body 24 is arranged close to the terminal assembly 1. The first positioning part 17 of the grounding terminal 14 is embedded and matched with the elastic connecting part 25, and further, the elastic connecting part 25 includes a through groove 27 and two first elastic pieces 28 and second elastic pieces 29 extending from the wall of the through groove 27 and arranged oppositely, and the first elastic piece 28 and the second elastic piece 29 are staggered so that the first positioning part 17 can smoothly extend into the through groove 27 and abut against the first elastic piece 28 and the second elastic piece 29 respectively, so that the front cover plate 20 does not move relative to the body part 15 of the grounding terminal 14 in the left-right direction. The elastic contact portion 26 includes a third elastic piece 30, and the third elastic piece 30 uses its own elastic force to abut against the cover body 24, so that the front cover 20 does not move in the up and down direction relative to the body portion 15 of the ground terminal 14. Therefore, the front cover 20 abuts against the first positioning portion 17 through a plurality of first elastic pieces 28 and a plurality of second elastic pieces 29, and a plurality of third elastic pieces 30 abut against the body portion 15, so that a plurality of ground terminals 14 can be effectively fixed, and then the signal terminals 13 spaced apart from the plurality of ground terminals 14 are also fastened, and the overall stability of the terminal assembly 1 is further improved through the rear cover 21.

The electrical connector 100 of the present invention further includes a strap 31 for overlapping a plurality of ground terminals 14. The strap 31 is in the shape of a hollow strip and is arranged near the plug-in portion of the terminal assembly 1. Since the strap 31 contacts a plurality of ground terminals 14 at the same time, the contact area between the strap 31 and the ground terminal 14 is increased, so that the transmission shielding effect can be improved, so that the signal terminal 13 can output signals at high speed. The strap 31 is connected to the ground terminal 14 and is fixedly connected to the plastic body assembly 2 to ensure the overall stability of the terminal assembly 1. Further, the plastic body assembly 2 further includes a first plastic 32 for fixing the plug-in portion of the terminal assembly 1 and a second plastic 33 for buckling with the strap 31. The first plastic 32 is provided with a slot (not numbered) for easy plug-in, and the plug-in portion of the terminal assembly 1 is accommodated and fixed in the slot. The second plastic 33 is a plurality of convex pieces extending from one side of the plastic body assembly 2, and the plurality of convex pieces are buckled with the hollowed-out portion of the strap 31. The strap 31 is made of a conductive material, that is, has electrical conductivity, such as rubber, metal, conductive plastic, etc.

The beneficial effects of the present invention are as follows: by providing a front cover plate that is clamped on the first positioning parts of several grounding terminals, several grounding terminals can be connected as a whole, and then the signal terminals spaced between the grounding terminals are also fixed together, thereby improving the stability of the entire terminal assembly. The front cover plate uses several elastic connecting parts and several elastic abutting parts located on both sides of the cover plate body to tightly abut against the grounding terminals, thereby increasing the overall stability of the terminal structure of the electrical connector.

The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims (5)

1. An electrical connector, characterized in that it comprises: a terminal assembly, a plastic body assembly for fixing the terminal assembly, and a housing assembly for accommodating the terminal assembly and the plastic body assembly, wherein the terminal assembly comprises a plurality of signal terminals and a plurality of grounding terminals spaced apart from the plurality of signal terminals; each of the grounding terminals is in the form of a thin sheet, and comprises a body portion, a first positioning portion extending from one side of the body portion, and a second positioning portion and a third positioning portion extending from the other side of the body portion, and the electrical connector further comprises a front cover plate clamped with the plurality of the first positioning portions; The electrical connector also includes a rear cover plate clamped with a plurality of second positioning portions; The plastic body assembly includes a plastic piece fixedly connected to a plurality of third positioning portions; The front cover plate comprises a cover plate body, a plurality of elastic connecting parts arranged on the cover plate body, and a plurality of elastic abutting parts located on both sides of the cover plate body, and the cover plate body is arranged close to the terminal assembly; The first positioning portion of the ground terminal is embedded and matched with the elastic connecting portion; The elastic connection portion includes a through slot and two first and second elastic sheets extending from the wall of the through slot and arranged opposite to each other, wherein the first and second elastic sheets are staggered so that the first positioning portion can smoothly extend into the through slot and abut against the first and second elastic sheets respectively; The electrical connector also includes a strap for overlapping a plurality of grounding terminals, the strap is fixedly connected to the plastic body component, and the strap is hollow. 2 . The electrical connector according to claim 1 , wherein the elastic contact portion comprises a third elastic piece, and the third elastic piece abuts against the cover body by utilizing its own elastic force. 3 . The electrical connector according to claim 2 , wherein the front cover plate and the rear cover plate are arranged opposite to each other and are respectively located on two sides of the ground terminal. 4. The electrical connector as claimed in claim 3, wherein the ground terminal further comprises a welding end for welding connection. 5. The electrical connector according to claim 4, wherein the ground terminal further comprises a plug-in end disposed away from the welding end.