CN218940085U - Terminal PCIE connector assembly - Google Patents

Abstract

The utility model relates to a wire end PCIE connector component, which directly welds a welding part of a metal terminal with a cable, covers a rear cover after the cable is welded, fixes the position of the cable in the rear cover by encapsulating insulating materials, can stabilize the connection of the cable and the welding part, and realizes the direct connection of the cable and the PCIE connector; through changing the shape of metal terminal for the interval between metal terminal's the welding part and wait the centre-to-centre spacing of welded cable more match, more be convenient for weld, promoted the welding efficiency of PCIE connector.

Description

Terminal PCIE connector assembly

Technical Field

The utility model belongs to the technical field of connectors, and particularly relates to a wire-end PCIE connector assembly.

Background

PCI-Express (peripheral component interconnect Express, PCIE) is a high-speed serial computer expansion bus standard proposed by Intel in 2001 and is intended to replace the old PCI, PCI-X and AGP bus standards.

The PCIE connector is a physical slot for communicating with peripheral equipment according to the PCI-Express bus standard, is mainly installed on equipment such as a server, a computer host and the like, is widely applied to the connection of display cards, sound cards, network cards and other expansion equipment, and is an important signal transmission interface.

In the prior art, the PCIE connector is mainly a board-end PCIE connector, that is, the bottom of the PCIE connector is welded on the PCB, and the peripheral device is plugged into a top slot of the PCIE connector. The PCIE connector at the board end has the advantage of being convenient for integrating various slots on a PCB board, so that the internal connecting line of the electronic equipment is attractive. But has the disadvantages that: because the PCIE connector at the board end needs to be welded on the PCB, in order to ensure the welding effect, the virtual welding, the false welding and the welding spot short circuit are prevented, and each PIN PIN of the PCIE connector at the board end generally adopts an equidistant arrangement mode. The PIN PINs cannot be directly connected to the high-speed high-frequency cable in an equidistant manner, because the high-speed high-frequency cable generally adopts a parallel-to-group connection manner, for example, two-wire parallel-to-group connection, three-wire parallel-to-group connection, four-wire parallel-to-group connection and mixed parallel-to-group connection, and the center distance of each parallel-to-group connection cannot be directly aligned with the center distance of the PIN PINs at the bottom of the PCIE connector at the board end, which results in difficult welding.

The technical proposal is that a lead and connectors of different types are additionally arranged on a PCB, the connectors are used for adapting to high-speed high-frequency cables of different combining and assembling modes, and the lead is used for electrically connecting a PIN PIN at the bottom of a PCIE connector at the board end with the connectors. Obviously, the solution of the prior art is limited by the installation mode on the PCB, and the PCB has more components and large electromagnetic interference, so that when the PCIE connector at the board end is connected with a high-speed high-frequency cable, additional components are required to be added, and transmission attenuation is large. In addition, in the prior art, the PCIE connector at the board end needs to be welded on the PCB for use, and for some special scenarios, for example, the installation space is small, and for the scenario with high requirements for electromagnetic interference, the PCIE connector at the board end is unsuitable for use, which limits the application range of the PCIE connector at the board end.

Disclosure of Invention

Therefore, the utility model provides a wire-end PCIE connector assembly, which solves the problem that the use scene of the prior art is limited because the wire-end PCIE connector is required to be welded on a PCB.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

according to a first aspect of the present utility model, there is provided a line-end PCIE connector assembly comprising:

the PCIE connector body of the line terminal and a rear cover, wherein,

the line-end PCIE connector body includes: the device comprises a shell and a slot transversely arranged in the shell, wherein a plurality of metal terminals are longitudinally fixed in the slot, and each metal terminal comprises a contact part, a conductive part and a welding part; the contact part of each metal terminal longitudinally extends to the top of the slot, the conductive part of each metal terminal penetrates through the slot, the welding part of each metal terminal is externally arranged at the bottom of the slot, and each welding part is welded with a cable;

the rear cover is arranged at the bottom of the terminal PCIE connector body, a wire outlet hole is formed in the rear cover, and the cable is led out from the wire outlet hole; and an insulating material is filled in the rear cover.

Further, the slot includes: the signal transmission area and the power supply control area are sequentially arranged along the transverse direction;

the metal terminal includes: a plurality of first metal terminals symmetrically arranged at the left and right sides of the signal transmission area, and a plurality of second metal terminals symmetrically arranged at the left and right sides of the power control area;

for the first metal terminals on the same side, the contact parts of the first metal terminals are distributed at equal intervals in a first interval, the welding parts of the first metal terminals are distributed at equal intervals in a second interval, the second interval is equal to or smaller than the first interval, and the second interval is determined according to the center distance of the cables to be welded.

Further, the first metal terminals are connected in parallel, and each parallel line comprises a plurality of first metal terminals symmetrically arranged at the left side and the right side of the signal transmission area;

in each group of parallel wires, the lateral distance between the contact parts of the adjacent first metal terminals on the same side is a first distance, the lateral distance between the welding parts of the adjacent first metal terminals is a second distance, and the conductive parts of the first metal terminals on the two sides of the same side are bent inwards towards the central line or the conductive parts of the middle first metal terminals until the lateral distance between the welding parts connected to the lower ends of the conductive parts is reduced to the second distance.

Further, the transverse distance between two adjacent parallel lines is a third distance, and the third distance is set according to the thickness of the cables to be welded.

Further, a longitudinal insulation partition is arranged between two adjacent groups of parallel wires on the same side; and/or the number of the groups of groups,

a transverse insulating partition is arranged between the two groups of parallel wires at the left side and the right side, and extends from the signal transmission area to the power supply control area along the transverse central axis of the slot;

the longitudinal insulating partition and the transverse insulating partition are integrally molded and injection molded at the bottom of the slot.

Further, the cross-sectional shape of the weld is any one or a combination of the following shapes, including:

cylindrical, circular, tile-shaped, rectangular.

Further, at least two positioning columns are symmetrically arranged at the bottom of the slot, and at least two first positioning holes are symmetrically arranged at the bottom of the shell; the rear cover is provided with at least two fixing holes which are matched with the positioning columns and at least two second positioning holes which are matched with the first positioning holes, and the fasteners can be screwed into the first positioning holes and the second positioning holes.

Further, the cross-sectional shape of the locator post is any one or a combination of the following shapes, including:

cylindrical, circular, or rectangular.

Further, the wire outlet hole is arranged at the bottom of the rear cover and has the same extending direction as the metal terminal;

or alternatively, the process may be performed,

the wire outlet hole is arranged on the side wall of the rear cover and is perpendicular to the extending direction of the metal terminal.

Further, the rear cover is also provided with a glue injection hole;

if the wire outlet hole is arranged at the bottom of the rear cover, the glue injection hole is arranged on the side wall of the rear cover; if the wire outlet hole is arranged on one side wall of the rear cover, the glue injection hole is arranged on the bottom of the rear cover and other side walls.

The utility model adopts the technical proposal and has at least the following beneficial effects:

through the welding part with metal terminal directly with the cable welding to cover the back lid after the cable welding, fix the position of cable in the back lid through embedment insulating material, also can stabilize the cable simultaneously and be connected with the welding part, realized the direct connection of cable and PCIE connector, compare the PCIE connector of prior art medium plate end and need weld and use on the PCB board, can reduce the electromagnetic interference that other components and parts brought on the PCB board, also can not install the plug connector that is adapted to high-speed high frequency cable additional simultaneously, reduced components and parts quantity and transmission decay, the cost is saved, the service scenario of PCIE connector has been expanded, can be applicable to various installation space and be little, the special scene that requires high to electromagnetic interference.

Further, by changing the shape of the metal terminals, the distance between the welding parts of the metal terminals is more matched with the center distance of the cable to be welded, welding is facilitated, and the welding efficiency of the PCIE connector is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic bottom structural view of a wire end connector assembly shown according to an exemplary embodiment;

FIG. 2 is a schematic diagram of the overall structure of a wire end connector assembly according to an exemplary embodiment;

FIG. 3 is a schematic diagram of a horizontal straight out configuration of a line end connector assembly shown according to an exemplary embodiment;

FIG. 4 is a 90 ° bend out construction schematic of a wire end connector assembly shown according to an exemplary embodiment;

fig. 5 is a side cross-sectional view of a wire end connector assembly shown according to an exemplary embodiment;

fig. 6 is a front cross-sectional view of a wire end connector assembly shown according to an exemplary embodiment;

FIG. 7 is a two-wire ganged schematic diagram of a wire end connector assembly shown in accordance with an exemplary embodiment;

FIG. 8 is a three-wire gang scheme schematic diagram of a wire end connector assembly shown according to an exemplary embodiment;

FIG. 9 is a four-wire ganged schematic diagram of a wire end connector assembly shown in accordance with an exemplary embodiment;

FIG. 10 is a hybrid grouping scheme schematic of a wire end connector assembly shown in accordance with an exemplary embodiment;

FIG. 11 is a bottom view of a wire end connector assembly shown according to an exemplary embodiment;

in the accompanying drawings: 1-contact part, 2-shell, 3-welding part, 4-conductive part, 5-locating column, 6-first locating hole, 7-back cover, 8-horizontal insulation partition, 9-vertical insulation partition, 10-injecting glue hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

The technical scheme of the utility model is further described in detail through the drawings and the embodiments.

It should be noted that, the wire-end PCIE connector body is generally elongated, and the "left and right sides" or "left side" or "right side" in the following embodiments are all the "left and right sides" or "left side" or "right side" when viewed along the transverse central axis of the wire-end PCIE connector body.

Referring to fig. 1-4, fig. 1-4 are diagrams illustrating a wire-end PCIE connector assembly according to an exemplary embodiment of the utility model, including:

a terminal PCIE connector body and a rear cover 7, wherein,

the line-end PCIE connector body includes: a housing 2 and a slot transversely arranged in the housing 2, referring to fig. 5, a plurality of metal terminals are longitudinally fixed in the slot, and each metal terminal comprises a contact part 1, a conductive part 4 and a welding part 3; the contact part 1 of each metal terminal longitudinally extends to the top of the slot, the conductive part 4 of each metal terminal penetrates through the slot, the welding part 3 of each metal terminal is externally arranged at the bottom of the slot, and each welding part 3 is welded with a cable;

referring to fig. 3 and 4, the rear cover 7 is disposed at the bottom of the wire-end PCIE connector body, a wire outlet hole is formed in the rear cover 7, and the cable is led out from the wire outlet hole; the rear cover 7 is internally filled with insulating materials.

In specific practice, the metal terminals may be encapsulated in the slots, or may be insert-molded and fixed in the slots. The number and definition of the metal terminals are set according to the needs of users, and in general, the number of the metal terminals is even, and the metal terminals are symmetrically arranged on the left side and the right side of the slot.

It can be appreciated that, the technical scheme provided in this embodiment, through welding the welding part 3 of the metal terminal directly with the cable, and cover the back lid 7 after the cable is welded, fix the position of cable in the back lid 7 through the embedment insulating material, simultaneously also can stabilize the connection of cable and welding part 3, realized the direct connection of cable and PCIE connector, compare the prior art middle plate end PCIE connector need weld on the PCB board use, can reduce the electromagnetic interference that other components and parts brought on the PCB board, simultaneously also can not need to install the plug connector that is adapted to high-speed high-frequency cable additional, reduce components and parts quantity and transmission attenuation, save the cost, expand the service scenario of PCIE connector, can be applicable to various installation space little, special scenarios that require high electromagnetic interference.

Referring to fig. 6, further, the slot includes: the signal transmission area and the power supply control area are sequentially arranged along the transverse direction;

the metal terminal includes: a plurality of first metal terminals symmetrically arranged at the left and right sides of the signal transmission area, and a plurality of second metal terminals symmetrically arranged at the left and right sides of the power control area;

for the first metal terminals on the same side, the contact parts 1 of the first metal terminals are distributed at equal intervals in a first interval, the welding parts 3 of the first metal terminals are distributed at equal intervals in a second interval, the second interval is equal to or smaller than the first interval, and the second interval is determined according to the center distance of the cables to be welded.

It should be noted that, in the prior art, the contact portions 1 of the metal terminals are arranged at equal intervals in the first interval, the welding portions 3 are also arranged at equal intervals in the first interval, and it is assumed that only one wire core is inside the cable to be welded, and this arrangement manner is not affected by welding, but when two or more wire cores (for example, the cable is a high-speed high-frequency cable) are inside the cable to be welded, the two or more wire cores need to be cut off by a section of wrapping of the cable so as to facilitate the wire core to be elongated and be adapted to the soldering leg position on the PCB board when the two or more wire cores are to be connected with the PCIE connector in the board end of the prior art. According to the technical scheme provided by the embodiment, the welding parts 3 of the first metal terminals are distributed at the same intervals at the second intervals, and the second intervals are determined according to the center distances of the cables to be welded, so that the distribution among the welding parts 3 of the first metal terminals is more compact, the distribution can be more adaptive to the center distances of the cables with multi-wire cores, the welding can be directly adapted, the welding efficiency of the cables is greatly improved, and the user experience is improved.

Referring to fig. 6, in specific practice, the first pitch a may be set to 1.0 to 2.54mm and the second pitch B may be set to 0.5 to 1.0mm. It should be noted that, the first pitch a is to be adapted to the pins of the peripheral device, so the technical scheme provided by this embodiment of the first pitch a is not changed, that is, the connection mode of the peripheral device and the line-end PCIE connector assembly provided by this embodiment is not different from the connection mode of the board-end PCIE connector and the peripheral device provided by the prior art.

The main improvement points of the technical scheme provided by the embodiment are as follows: the PCIE connector and cable connection mode is changed, the cable connection mode is adapted by additionally installing other components such as connectors on the PCB, the PCIE connector is directly connected with the cable, the use scene limitation of the PCB and the electromagnetic interference caused by the use scene limitation are eliminated, and the electric signal transmission attenuation is reduced. In order to enable the PCIE connector to be better welded with the cable, the technical scheme provided by the embodiment changes the second interval B, and changes the second interval B in the prior art to be more than 1.0mm and 0.5-1.0 mm.

It should be noted that, when a plurality of welding experiments are performed on the high-speed high-frequency cable in the prior art, the second interval B is set to be 0.5-1.0 mm, so that the welding of most of the high-speed high-frequency cables in the prior art can be adapted. Specific values of the second interval B can be set according to high-speed high-frequency cables of different types, different high-speed high-frequency cables can be welded, and wire end PCIE connectors with different second intervals B can be selected.

In particular practice, high-speed high-frequency cables are typically spliced in parallel, e.g., two-wire, three-wire, four-wire, and hybrid. In order to better adapt to welding of the high-speed high-frequency cable, in the technical scheme provided by the embodiment, the first metal terminals can be combined and connected, and each group of combined wires comprises a plurality of first metal terminals symmetrically arranged at the left side and the right side of the signal transmission area;

in each group of parallel wires, the lateral spacing of the contact parts 1 of the adjacent first metal terminals on the same side is a first spacing, the lateral spacing of the welding parts 3 of the adjacent first metal terminals is a second spacing, and the conductive parts 4 of the first metal terminals on the two sides of the same side are inwards bent towards the conductive parts 4 of the middle first metal terminals until the lateral spacing between the welding parts 3 connected to the lower ends of the conductive parts 4 is reduced to the second spacing.

Referring to fig. 7, when the high-speed high-frequency cable employs a two-wire parallel group, the first metal terminal may employ the arrangement shown in fig. 7. Referring to fig. 7, in the two parallel lines, the lateral pitch of the contact portions 1 of the adjacent first metal terminals on the same side is a first pitch, the lateral pitch of the soldering portions 3 of the adjacent first metal terminals is a second pitch, and the conductive portions 4 of the two first metal terminals on the same side are both bent inward toward the center line until the lateral pitch between the soldering portions 3 connected to the lower ends of the conductive portions 4 is reduced to the second pitch.

Referring to fig. 8, when the high-speed high-frequency cable employs the three-wire parallel group, the first metal terminal may employ the arrangement shown in fig. 8. Referring to fig. 8, in the three groups of parallel lines, the lateral pitch of the contact portions 1 of adjacent first metal terminals on the same side is a first pitch, the lateral pitch of the soldering portions 3 of adjacent first metal terminals is a second pitch, and the conductive portions 4 of both first metal terminals on the same side are bent inward toward the conductive portion 4 of the middle first metal terminal until the lateral pitch between the soldering portions 3 connected to the lower ends of the conductive portions is reduced to the second pitch.

Referring to fig. 9, when the high-speed high-frequency cable employs four-wire parallel groups, the first metal terminals may employ the arrangement shown in fig. 9. Referring to fig. 9, in four parallel lines, the lateral pitch of the contact portions 1 of adjacent first metal terminals on the same side is a first pitch, the lateral pitch of the solder portions 3 of adjacent first metal terminals is a second pitch, and the conductive portions 4 of both first metal terminals on the same side are bent inward toward the center line until the lateral pitch between the solder portions 3 connected to the lower ends of the conductive portions is reduced to the second pitch.

Referring to fig. 10, when the high-speed high-frequency cable employs a hybrid group (for example, when two-wire parallel groups, three-wire parallel groups, four-wire parallel groups are all present), the first metal terminal may employ the arrangement shown in fig. 10. Referring to fig. 10, in the hybrid parallel group, the lateral pitch of the contact portions 1 of adjacent first metal terminals on the same side is a first pitch, the lateral pitch of the solder portions 3 of adjacent first metal terminals is a second pitch, and the conductive portions 4 of both first metal terminals on the same side are bent inward toward the center line or the conductive portion 4 of the middle first metal terminal until the lateral pitch between the solder portions 3 connected to the lower ends of the conductive portions is reduced to the second pitch.

It should be noted that, no matter what kind of parallel connection mode is adopted for the first metal terminal, there is at least one single-ended signal line and at least one differential signal line in each parallel connection.

It can be appreciated that, by changing the shape of the metal terminals, the space between the welding parts 3 of the metal terminals is more matched with the center distance of the cable to be welded, so that welding is facilitated, and the welding efficiency of the PCIE connector is improved.

Further, in order to facilitate welding, the cross-sectional shape of the welded portion 3 is any one or a combination of the following shapes, including: cylindrical, circular, tile-shaped, rectangular.

In specific practice, the cross-sectional shape of the welded portion 3 is set according to the use scenario and the user's needs.

Referring to fig. 7 to 10, the lateral distance between two adjacent parallel lines is a third distance C, which is set according to the thickness of the cable to be soldered.

It will be appreciated that the purpose of considering the third spacing C is to: when a plurality of cables are welded at the same time, because the thickness of the cables is different, the third interval C must be ensured to have enough space allowance to accommodate the welded cables, and physical extrusion and signal interference between the cables are reduced.

Referring to fig. 1, a longitudinal insulation partition 9 is arranged between two adjacent parallel lines on the same side; and/or the number of the groups of groups,

referring to fig. 11, a transverse insulating partition 8 is arranged between the two groups of parallel wires on the left and right sides, and the transverse insulating partition 8 extends from the signal transmission area to the power control area along the transverse central axis of the slot;

the longitudinal insulating partition 9 and the transverse insulating partition 8 are integrally molded and molded at the bottom of the slot.

In particular practice, the height of the longitudinal insulating partitions 9 may be set lower than the height of the transverse insulating partitions 8. It will be appreciated that the arrangement of the longitudinal insulating partition 9 and the transverse insulating partition 8 is designed to facilitate the welding operation, prevent the welding string between different cables, and improve the welding accuracy and the welding efficiency.

Referring to fig. 1, at least two positioning posts 5 are symmetrically arranged at the bottom of the slot, and at least two first positioning holes 6 are symmetrically arranged at the bottom of the shell 2; the rear cover 7 is provided with at least two fixing holes (not shown in the drawing) corresponding to the positioning posts 5, and at least two second positioning holes (not shown in the drawing) corresponding to the first positioning holes 6, and fasteners (not shown in the drawing) can be screwed into the first positioning holes 6 and the second positioning holes.

In specific practice, the fasteners include, but are not limited to: rivets, screws, snaps, plug-ins, and the like.

It will be appreciated that the positioning posts 5 and the positioning holes are both provided to better fix the rear cover 7 to the bottom of the terminal PCIE connector body. This kind of back lid 7 that this embodiment provided, detachably fixes the bottom of online end PCIE connector body, and the welding of being convenient for has greatly promoted user experience with maintenance dismouting.

In specific practice, the cross-sectional shape of the positioning post 5 is any one or a combination of the following shapes, including: cylindrical, circular, or rectangular.

Referring to fig. 3 to 4, in specific practice, the wire outlet hole is provided at the bottom of the rear cover 7 in the same direction as the extending direction of the metal terminal (i.e., horizontally straight wire); or alternatively, the process may be performed,

the wire outlet holes are provided on the side wall of the rear cover 7, perpendicular to the extending direction of the metal terminals (i.e., 90 ° bent wire).

It can be understood that the difference of the wire outlet positions determines the difference of the wire outlet modes of the cables, the specific wire outlet positions are set according to the needs of users and the use situation, and the sizes of the wire outlet holes are set according to the thickness type of the cables.

Referring to fig. 3 to 4, the rear cover 7 is further provided with a glue injection hole 10;

if the wire outlet hole is arranged at the bottom of the rear cover 7, the glue injection hole 10 is arranged on the side wall of the rear cover 7; if the wire outlet hole is provided on one side wall of the rear cover 7, the glue injection hole 10 is provided on the bottom and other side walls of the rear cover 7.

It can be understood that the insulating material is filled into the rear cover 7 through the glue injection hole 10, so that the purposes of filling and fixing cables are achieved, the insulating effect of the assembly can be improved, the fixing strength of welding spots is improved, different wire outlet quantity combinations can be applied, and the universality of the rear cover 7 is improved. When injecting glue, different mould seal heads are used. The rear cover 7 may be formed by integrally injecting plastic after the bonding wire is completed.

Since the rear cover 7 is filled with an insulating material, in specific practice, the rear cover 7 may be a metal rear cover 7 or a plastic rear cover 7, and the specific material of the rear cover 7 may be selected according to the needs of the user or the use situation.

In summary, the technical scheme provided in this embodiment, through the welding part 3 with the metal terminal directly with the cable welding, and cover back lid 7 after the cable welding, fix the position of cable in back lid 7 through the embedment insulating material, simultaneously also can stabilize the cable and be connected with welding part 3, realized the direct connection of cable and PCIE connector, compare the prior art middle plate end PCIE connector and need weld and use on the PCB board, can reduce the electromagnetic interference that other components and parts brought on the PCB board, also can not need to install the plug connector that is adapted to high-speed high-frequency cable additional simultaneously, reduced components and parts quantity and transmission decay, saved the cost, expanded PCIE connector's service scenario, can be applicable to various installation space little, the special scenario that requires high to electromagnetic interference.

Further, by changing the shape of the metal terminals, the distance between the welding parts 3 of the metal terminals is more matched with the center distance of the cable to be welded, welding is facilitated, and the welding efficiency of the PCIE connector is improved.

It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.

Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A line-end PCIE connector assembly, comprising:

the PCIE connector body of the line terminal and a rear cover, wherein,

the line-end PCIE connector body includes: the device comprises a shell and a slot transversely arranged in the shell, wherein a plurality of metal terminals are longitudinally fixed in the slot, and each metal terminal comprises a contact part, a conductive part and a welding part; the contact part of each metal terminal longitudinally extends to the top of the slot, the conductive part of each metal terminal penetrates through the slot, the welding part of each metal terminal is externally arranged at the bottom of the slot, and each welding part is welded with a cable;

the rear cover is arranged at the bottom of the terminal PCIE connector body, a wire outlet hole is formed in the rear cover, and the cable is led out from the wire outlet hole; and an insulating material is filled in the rear cover.

2. The line-end PCIE connector assembly of claim 1 wherein,

the slot includes: the signal transmission area and the power supply control area are sequentially arranged along the transverse direction;

the metal terminal includes: a plurality of first metal terminals symmetrically arranged at the left and right sides of the signal transmission area, and a plurality of second metal terminals symmetrically arranged at the left and right sides of the power control area;

for the first metal terminals on the same side, the contact parts of the first metal terminals are distributed at equal intervals in a first interval, the welding parts of the first metal terminals are distributed at equal intervals in a second interval, the second interval is equal to or smaller than the first interval, and the second interval is determined according to the center distance of the cables to be welded.

3. The line-end PCIE connector assembly of claim 2 wherein,

the first metal terminals are connected in parallel, and each group of parallel wires comprises a plurality of first metal terminals symmetrically arranged at the left side and the right side of the signal transmission area;

in each group of parallel wires, the lateral distance between the contact parts of the adjacent first metal terminals on the same side is a first distance, the lateral distance between the welding parts of the adjacent first metal terminals is a second distance, and the conductive parts of the first metal terminals on the two sides of the same side are bent inwards towards the central line or the conductive parts of the middle first metal terminals until the lateral distance between the welding parts connected to the lower ends of the conductive parts is reduced to the second distance.

4. The line-end PCIE connector assembly of claim 3 wherein,

the transverse distance between two adjacent parallel wires is a third distance, and the third distance is set according to the thickness of the cables to be welded.

5. The line-end PCIE connector assembly of claim 4 wherein,

a longitudinal insulating partition is arranged between two adjacent parallel lines on the same side; and/or the number of the groups of groups,

a transverse insulating partition is arranged between the two groups of parallel wires at the left side and the right side, and extends from the signal transmission area to the power supply control area along the transverse central axis of the slot;

the longitudinal insulating partition and the transverse insulating partition are integrally molded and injection molded at the bottom of the slot.

6. The wire-end PCIE connector assembly according to any one of claims 1-5 wherein a cross-sectional shape of the weld is any one or a combination of the following shapes, including:

cylindrical, circular, tile-shaped, rectangular.

7. The line-end PCIE connector assembly of claim 1 wherein,

at least two positioning columns are symmetrically arranged at the bottom of the slot, and at least two first positioning holes are symmetrically arranged at the bottom of the shell; the rear cover is provided with at least two fixing holes which are matched with the positioning columns and at least two second positioning holes which are matched with the first positioning holes, and the fasteners can be screwed into the first positioning holes and the second positioning holes.

8. The line-end PCIE connector assembly of claim 7 wherein the positioning posts have a cross-sectional shape that is any one or a combination of the following shapes, including:

cylindrical, circular, or rectangular.

9. The line-end PCIE connector assembly of claim 1 wherein,

the wire outlet hole is arranged at the bottom of the rear cover and has the same extending direction as the metal terminal;

or alternatively, the process may be performed,

the wire outlet hole is arranged on the side wall of the rear cover and is perpendicular to the extending direction of the metal terminal.

10. The line-end PCIE connector assembly of claim 9 wherein,

the rear cover is also provided with a glue injection hole;

if the wire outlet hole is arranged at the bottom of the rear cover, the glue injection hole is arranged on the side wall of the rear cover; if the wire outlet hole is arranged on one side wall of the rear cover, the glue injection hole is arranged on the bottom of the rear cover and other side walls.

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