CN108448291A - electrical connector - Google Patents

Abstract

Present invention is disclosed a kind of electric connectors, including：Terminal assemblies, the plastic body component of stationary terminal and the housing unit of accepting terminals component and plastic body component, terminal assemblies include several signal terminals and with the spaced several ground terminals of several signal terminals, signal terminal is alternatively arranged with ground terminal, each ground terminal includes body part, the plug division extended from body part side, first positioning region and the second positioning region extended from the other side of body part and third positioning region, first positioning region, second positioning region, third positioning region respectively with plastic body component, housing unit insertion cooperation is with stationary terminal.Several signal terminals and several ground terminals are arranged by interval in the present invention so that each group of signal terminal is grounded terminal separation, to which shield effectiveness will shield the electric connector of piece due to normal tape.

Description

electrical connector

technical field

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

Background technique

Due to the built-in multimedia and network application software in today's electronic digital products, more and more people transmit multimedia information such as dynamic images, static images, and sounds to public websites for display or to relatives and friends through electronic digital products. Friends share information in electronic digital products, and in order to process and transmit such a huge amount of signal transmission, system operators use high-speed connectors for their connection interfaces in hardware system equipment such as servers, routers, and related high-speed signal transmission devices. , to increase the transmission speed.

General high-speed transmission connectors are different from traditional connectors in that a large number of contact terminals are added inside to cope with high-frequency and high-speed signal transmission. However, the accompanying problem is that the volume of high-speed transmission connectors cannot be increased too much. As a result, the spacing between the contact terminals is reduced, or the body width (ie, cross-sectional area) of each contact terminal is reduced, but the reduction of the spacing will cause the adjacent contact terminals to also generate signals during high-speed transmission. The phenomenon of crosstalk interference occurs, and the reduction of the cross-sectional area of each contact terminal will increase the current density and cause the impedance to rise, making the problem of impedance mismatch more obvious; in addition, multiple contact terminals can be accurately assembled on the In a high-speed transmission connector, there are difficulties, and the shape, structure and arrangement of the contact terminals will affect the quality of signal transmission, so it is also worth considering in terms of simplifying the assembly process.

In view of this, it is necessary to provide a high-speed transmission connector with a shielded grounding structure, which can reduce crosstalk interference and improve the stability of signal transmission.

Contents of the invention

The object of the present invention is to provide an electrical connector with good shielding effect, so that signal terminals can transmit signals at high speed.

In order to achieve the above object, the present invention provides the following technical solution: an electrical connector, comprising: 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, the The terminal assembly includes a number of signal terminals and a number of ground terminals spaced apart from the signal terminals, the signal terminals are fixed by the plastic body assembly and arranged spaced from the ground terminals, each of the ground terminals includes a body part , an inserting portion extending from one side of the body portion, a first positioning portion, and a second positioning portion and a third positioning portion extending from the other side of the body portion, the first positioning portion, the first positioning portion The second positioning part and the third positioning part are respectively embedded with the plastic body component and the housing component to fix the terminal component.

Further, the electrical connector further includes a front cover that engages several first positioning portions and a rear cover that engages several second positioning portions.

Further, the plastic body assembly includes plastic parts fixedly connected to several third positioning parts.

Further, the first positioning part, the second positioning part and the third positioning part are all in the shape of a thin sheet, so as to be embedded with the front cover, the rear cover and the plastic part.

Further, the signal terminal is not in contact with the ground terminal.

Further, the ground terminal is a hollow structure.

Further, the body part includes at least one support piece for fixedly connecting the plug-in part, the first positioning part, the second positioning part, and the third positioning part.

Further, the ground terminal further includes a welding end disposed away from the insertion end.

Further, the front cover is opposite to the rear cover and located on both sides of the ground terminal.

Further, the plastic body component is buckled with the shell component.

The beneficial effects of the present invention are: by arranging several signal terminals and several grounding terminals at intervals, each group of signal terminals is separated by grounding terminals, so that the shielding effect is due to the common electric connector with shielding sheet, and the grounding terminal of the present invention It has a first positioning part, a second positioning part, and a third positioning part, and the three are embedded and fitted with the plastic body component and the housing component respectively, so that the grounding terminals and signal terminals are closely arranged without contact, and the terminal components The overall stability is stronger, so that the signal terminal can transmit signals stably.

The above description is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly and implement them according to the contents of the description, the preferred embodiments of the present invention and accompanying drawings are described in detail below.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

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

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

Fig. 4 is a schematic diagram of the cooperation structure of the plastic body component, the strap, the front cover, and the rear cover.

Fig. 5 is a schematic diagram of the cooperative structure of the terminal assembly, the strap, the front cover, the rear cover, and the plastic parts.

Fig. 6 is a schematic diagram of the cooperation structure of the ground terminal, the strap, the front cover, the rear cover, and the plastic parts.

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

Fig. 8 is a schematic structural diagram of the front cover.

Detailed ways

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

Please refer to FIG. 1 to FIG. 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 accommodating the terminal assembly 1 and the plastic body assembly 2 housing assembly 3, 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 insertion, and the housing assembly 3 can protect the terminal assembly 1 and the plastic body assembly 2 are not scratched, and the stability of the entire electrical connector 100 can be improved. The terminal assembly 1 and the plastic body assembly 2 are formed as 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 fastened with the first housing 4. The first housing 4, the second housing 5 and the The third housing 6 jointly forms 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 tank for integrally accommodating the plastic body assembly 2 and the terminal assembly 1. It has two parallel side walls 7 and a connection between the two The bottom wall (not shown) of the side wall 7, the second housing 5 vertically connects the two side walls 7 and the bottom wall, for connecting the plastic body assembly 2 and the terminal assembly 1 The formed unitary piece is closed. A welding part 9 extends from one side of the two side walls 7 , and the welding part 9 can be inserted into the third housing 6 to limit the movement of the third housing 6 .

The first housing 4 is also provided with a number of arc-shaped protrusions 10, and the second housing 5 and the third housing 6 are respectively provided with arc-shaped protrusions 10 that can be fastened and connected with the arc-shaped protrusions 10. through-hole 11. The arc-shaped protrusion 10 has elasticity, so it can be pressed by the walls of the third housing 6 and the second housing 5 to extend into the through hole 11 . When the arc-shaped protrusion 10 protrudes into the through hole 11, the arc-shaped protrusion 10 is no longer pressed by the walls of the third housing 6 and the second housing 5, so that it can be restored by its own elasticity . After reset, the arc-shaped protrusion 10 abuts and fits with 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 connection portion 12 for receiving the plastic body assembly 2, and the connection portion 12 can ensure that the plastic body assembly 2 and the terminal assembly 1 are integrally and stably disposed on the housing. In the body assembly 3 , the stability of the entire electrical connector 100 is improved.

The terminal assembly 1 includes several signal terminals 13 and several ground terminals 14 spaced apart from the several signal terminals 13 , the signal terminals 13 are fixed by the plastic body assembly 2 and arranged neatly with the ground terminals 14 . The signal terminal 13 is not in contact with the ground terminal 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 terminal 14 has a hollow structure, thereby reducing the contact area, facilitating heat dissipation, and simultaneously reducing its own weight, so that the overall weight of the electrical connector 100 is reduced and is easy to carry.

The present invention also provides a structure of the ground terminal 14 , the ground terminal 14 can not only increase the shielding effect but also be closely arranged with the signal terminal 13 , thus improving the overall stability of the terminal assembly 1 .

Each ground terminal 14 includes a body portion 15 , a socket portion 16 extending from one side of the body portion 15 , a first positioning portion 17 , and a second positioning portion 18 extending from the other side of the body portion 15 And the third positioning part 19. The electrical connector 100 also includes a front cover 20 that engages several first positioning parts 17 and a rear cover 21 that engages several second positioning parts 18. The plastic body assembly 2 includes a plurality of first positioning parts fixedly connected The plastic parts 22 of the three positioning parts 19 , the front cover 20 is disposed opposite to the rear cover 21 and are respectively located on two sides of the ground terminal 14 . The first positioning portion 17 , the second positioning portion 18 and the third positioning portion 19 are all in the shape of a thin sheet for fitting with the corresponding front cover 20 , rear cover 21 , and plastic parts 22 . The first positioning part 17 can extend into the front cover 20 and abut against the front cover 20, and the second positioning part 18 can extend into the rear cover 21 and contact the rear cover. The plate 21 is an abutting fit. The third positioning portion 19 is embedded in and fixedly connected to the plastic part 22 , so that the plastic part 22 can arrange several ground terminals 14 at a certain distance, and has the function of stabilizing the several ground terminals 14 . The front cover 20 , the rear cover 21 , and the plastic part 22 can fix the ground terminal 14 and increase the overall stability of the terminal assembly 1 .

The body part 15 includes at least one supporting piece (not labeled) for fixedly connecting the plug-in part 16 , the first positioning part 17 , the second positioning part 18 and the third positioning part 19 . The ground terminal 14 also includes a soldering end 23 disposed away from the insertion end, and the soldering end 23 can solder the entire electrical connector 100 to the main board.

The structure of the front cover 20 is similar to that of the rear cover 21 , so only the structure of the front cover 20 is described in this embodiment. Specifically, the front cover 20 includes a cover body 24, several elastic connecting parts 25 arranged on the cover body 24, and several elastic abutting parts 26 located on both sides of the cover body 24. The cover body 24 is arranged close to the terminal assembly 1 . The first positioning portion 17 of the ground terminal 14 is fitted with the elastic connecting portion 25. Further, the elastic connecting portion 25 includes a through groove 27 and two extending from the wall of the through groove 27 and arranged oppositely. The first elastic piece 28 and the second elastic piece 29, the first elastic piece 28 and the second elastic piece 29 are staggered from each other so that the first positioning part 17 can smoothly extend into the through groove 27 and resist the first elastic piece 28 and the second elastic piece 29 respectively. Therefore, the front cover 20 does not move relative to the main body 15 of the ground terminal 14 in the left and right directions. The elastic contact portion 26 includes a third elastic piece 30, and the third elastic piece 30 abuts against the cover body 24 by its own elastic force, so that the front cover 20 is relative to the ground terminal 14 in the vertical direction. The body portion 15 does not move in any way. 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 abuts against the main body portion 15, thereby effectively fixing several The ground terminals 14 , and the signal terminals 13 spaced apart from the several ground terminals 14 are also fastened, and pass through the rear cover plate 21 to further improve the overall stability of the terminal assembly 1 .

The electrical connector 100 of the present invention also includes a strap 31 overlapping several grounding terminals 14. The strap 31 is in the shape of a hollowed-out strip, which is arranged close to the plug-in part of the terminal assembly 1. Because the strap 31 Contacting several ground terminals 14 at the same time increases the contact area between the strap 31 and the ground terminals 14 , so it can be used to improve the transmission shielding effect, so that the signal terminal 13 can output signals at high speed. The strap 31 is connected to the ground terminal 14 and 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 fastening with the strap 31 . The first plastic 32 is provided with a slot (not labeled) for easy insertion, and the insertion part of the terminal assembly 1 is accommodated and fixed in the slot. The second plastic 33 is a plurality of protrusions extending from one side of the plastic body component 2 , and the plurality of protrusions are engaged with the hollowed-out part of the strap 31 . The strap 31 is made of conductive material, that is, has electrical conductivity, such as rubber, metal material, conductive plastic and the like.

Beneficial effects of the present invention: by arranging several signal terminals and several grounding terminals at intervals, each group of signal terminals is separated by grounding terminals, so that the shielding effect is due to the common electric connector with shielding sheet, and the grounding terminal of the present invention has The first positioning part, the second positioning part, and the third positioning part are embedded with the plastic body assembly and the housing assembly respectively, so that the grounding terminals and signal terminals are closely arranged without contact, and the overall terminal assembly The stability is stronger, so that the signal terminal can transmit signals stably.

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

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be pointed out that those skilled in the art can make several modifications and improvements 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 for the present invention should be based on the appended claims.

Claims (10)

1. a kind of electric connector, which is characterized in that including：Terminal assemblies, the fixed terminal assemblies plastic body component with And the housing unit of the receiving terminal assemblies and the plastic body component, the terminal assemblies include several signal terminals with And with several spaced several ground terminals of signal terminal, the signal terminal fixed by the plastic body component And be alternatively arranged with the ground terminal, each ground terminal includes body part, is inserted from what the body part side extended Socket part, the first positioning region and the second positioning region extended from the other side of the body part and third positioning region, described first Positioning region, second positioning region, the third positioning region are matched with the plastic body component, housing unit insertion respectively It closes with the fixation terminal assemblies.

2. electric connector as described in claim 1, it is characterised in that：The electric connector further includes that several are first fixed for clamping The front shroud in position portion and the back shroud for being clamped several the second positioning regions.

3. electric connector as claimed in claim 2, it is characterised in that：The plastic body component includes being fixedly connected with several The plastic parts of third positioning region.

4. electric connector as claimed in claim 3, it is characterised in that：First positioning region, second positioning region and institute It is chip shape to state third positioning region, to coordinate with the front shroud, the back shroud, plastic parts insertion.

5. electric connector as claimed in claim 4, it is characterised in that：The signal terminal is not contacted with the ground terminal.

6. electric connector as claimed in claim 5, it is characterised in that：The ground terminal is engraved structure.

7. electric connector as claimed in claim 6, it is characterised in that：The body part includes at least one being fixedly connected The support chip of the plug division, first positioning region, second positioning region, the third positioning region.

8. electric connector as claimed in claim 7, it is characterised in that：The ground terminal further includes being set far from the inserted terminal The welding ends set.

9. being used for electric connector as claimed in claim 8, it is characterised in that：The front shroud is oppositely arranged with the back shroud And it is located at the both sides of the ground terminal.

10. being used for electric connector as described in claim 1, it is characterised in that：The plastic body component and the shell group Part is interlockingly connected.