CN115149350A - Line Backplane Connector - Google Patents

Abstract

The application provides a wire backplane connector, which comprises a signal module; the signal module comprises a plurality of terminal modules, a plurality of wires and a common ground piece; each terminal module comprises a terminal which is respectively connected with one lead in a welding way; the wire is sequentially provided with an inner core, a first insulating layer, an aluminum foil layer and a second insulating layer from inside to outside in the radial direction, the wire comprises an exposed section in the longitudinal direction, and the aluminum foil layer positioned on the exposed section is exposed; the common grounding piece is coated on the exposed section of each lead, fixes the leads at the same time, and is in contact with the aluminum foil layer of the exposed section on each lead to be in common grounding. The wire backplane connector of the present application improves crosstalk between signals.

Description

Line Backplane Connector

technical field

The present application relates to the technical field of connectors, in particular to a line backplane connector.

Background technique

Due to the rapid development of high-speed products, the application of high-speed line backplanes is becoming more and more extensive. High-speed line backplanes use wires to replace PCB traces, which have lower loss, higher anti-crosstalk capability and EMC shielding performance. The high-speed line backplane faces the challenge of high speed. The optimization of crosstalk is very important. The quality of crosstalk often restricts the speed of the product. The quality of product co-ground bonding is particularly important for crosstalk. The number, reliability, and integrity of the co-ground The nature of the crosstalk has a great influence on the quality of crosstalk and resonance. The line backplane patent uses a common ground part, which wraps the wire aluminum foil to make all the wires in the signal module common ground. The common ground part uses welding method to overlap with the C-type shield. The small shrapnel is in contact with the common ground parts of the adjacent signal modules, so that all conductor aluminum foils and C-type shields are connected to the common ground to achieve the purpose of reducing crosstalk.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a line backplane connector to improve crosstalk between signals.

To achieve the above purpose, the application provides the following technical solutions:

A line backplane connector includes a signal module;

The signal module includes a plurality of terminal modules, a plurality of wires and a common ground;

Each of the terminal modules includes terminals, which are respectively welded and connected to one of the wires;

The wire is provided with an inner core, a first insulating layer, an aluminum foil layer and a second insulating layer in turn from the inside to the outside in the radial direction, and the wire includes an exposed section in its longitudinal direction, which is located on the exposed section the exposed setting of the aluminum foil layer;

A plurality of the terminal modules and a plurality of the wires are arranged adjacent to each other in a one-to-one correspondence, and the common ground piece covers the exposed sections of the wires, fixes the plurality of wires at the same time, and is connected with the wires. The aluminum foil layers on the exposed segments are in contact with the common ground.

In some embodiments of the present application, the common ground member is an annular closed structure and includes an arched portion and an enclosed portion in the circumferential direction thereof, the arched portion is provided with a plurality of curved protuberances, and the enclosed portion is The part is a straight plate or is similar or identical to the shape of the arched part;

The arched part and the cladding part are correspondingly attached in the width direction and form a plurality of through holes, the shape of the through holes is adapted to the shape of the cross section of the wires, and each of the wires is located in the exposed part. The outer periphery of the aluminum foil layer on the segment is attached to the inner wall of the through hole.

In some embodiments of the present application, each of the terminal modules further includes a shield;

The welding places of each of the terminal modules and the wires correspondingly connected thereto are enclosed in the shielding member;

The common ground piece and each of the shielding pieces are connected and fixed.

In some embodiments of the present application, the signal module further includes a plastic body;

The welding parts of the wires and the terminals are plastic-sealed inside the plastic-sealing body, and the free ends of the terminals and the wires are away from each other and both extend out of the plastic-sealing body.

In some embodiments of the present application, the arched portion is provided with a plurality of elastic pieces, and the molded body includes a first side surface and a second side surface oppositely arranged in the thickness direction thereof. The first side surface and the second side surface are A plurality of openings are arranged on the upper surfaces, the openings located on the first side surface expose the elastic pieces, and the openings located on the second side surface expose the wrapping portion.

In some embodiments of the present application, the line backplane connector includes a plurality of the signal modules stacked, and a plurality of the signal modules are stacked;

The free end of the elastic piece of the common ground piece of one of the signal modules passes through the opening of the plastic body of the other signal module and the opening of the ground common piece of the other signal module. The wrapping parts are in contact with each other.

In some embodiments of the present application, each of the terminal modules further includes a fixing block, and the fixing block is wrapped and disposed in the shielding member;

The terminal includes a free end, a middle part and a welding end in sequence in its longitudinal direction, the middle part of the terminal is fixed on the fixing block, and the free end and the welding end of the terminal are away from each other and protrude from the fixing block .

In some embodiments of the present application, the cable backplane connector further includes a base, and the base is provided with a plurality of slots;

Each of the signal modules is respectively inserted into one of the slots, and the shielding member of each of the terminal modules of each of the signal modules and the base are fixedly connected by interference fit.

In some embodiments of the present application, the base is a metal base;

A convex hull or an elastic member is provided on the shielding member at the position in contact with the base;

And/or, a convex hull or an elastic member is provided on a position of the base in contact with the shielding member.

In some embodiments of the present application, the cross-sectional shape of the shielding member in its longitudinal direction includes a mouth shape, an O shape, a D shape, a U shape, a C shape and an L shape;

The lengthwise direction of the terminal is adapted to the lengthwise direction of the shield.

The beneficial effects of this application are:

1. This application proposes a line backplane connector, which attaches the aluminum foil layer of the signal conductor to the inner surface of the common ground piece, so that the aluminum foil layer of each signal conductor can achieve a common ground, thereby improving the crosstalk between signals and increasing the shielding effect.

2. The ground common part of the present application is provided with a spring sheet, which can be extended and overlapped on the common ground parts of other adjacent signal modules arranged in a stack, thereby realizing the gap between the conductor aluminum foil layers of each stacked adjacent signal module. common ground, thereby improving the crosstalk between signals and enhancing shielding.

3. In the present application, each adjacent shielding member is fixedly connected and electrically connected by a common ground piece, so that the aluminum foil layers of each wire on the same signal module can share the ground, improve the crosstalk between signals and enhance the shielding.

4. The line backplane connector of the present application adopts a metal base, the signal module overlaps the common ground member with the metal base through the outermost elastic sheet to realize common ground, and the shielding member is also connected to the metal base. The common ground is overlapped, thus realizing the common ground at both ends of the product as a whole, further improving the problem of signal crosstalk and enhancing the overall shielding effect of the product.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

Fig. 1 is the structural schematic diagram of the signal module;

Fig. 2 is the enlarged schematic diagram of the wire;

3 is a schematic structural diagram of a common ground element in some embodiments;

FIG. 4 is a schematic structural diagram of a signal module with a plastic encapsulation body;

5 is a schematic structural diagram of a signal module with a plastic package from another perspective;

6 is a schematic structural diagram of a common ground element in other embodiments;

Fig. 7 is the structural representation of the connector;

FIG. 8 is a schematic structural diagram of the connector from another perspective.

The main reference signs in the drawings of the specification of the present application are explained as follows:

1-Signal module; 2-Terminal module; 201-Fixing block; 3-Conductor; 4-Common ground; 5-Terminal; 301-Inner core; 302-First insulating layer; 303-Aluminum foil layer; 304-Second Insulation layer; 401-inclusion part; 402-arched part; 403-hole; 6-shield; 7-plastic body; 8-shrapnel; 9-window; 701-first side; 702-second side ; 10 - Pedestal.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of this application.

In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying The device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application.

The terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of this application, unless stated otherwise, "plurality" means two or more.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or an internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

The present application provides a line backplane connector, which will be described in detail below. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments of the present application. In addition, in the following embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

As shown in FIG. 1, in some embodiments of the present application, a line backplane connector includes a signal module 1; the signal module 1 includes a plurality of terminal modules 2, a plurality of wires 3 and a common ground member 4; each The terminal module 2 includes terminals 5, which are respectively connected with one of the wires 3 by welding.

As shown in FIG. 2 , the wire 3 is provided with an inner core 301 , a first insulating layer 302 , an aluminum foil layer 303 and a second insulating layer 304 in sequence from the inside to the outside in the radial direction of the wire 3 , and the wire 3 is arranged in the longitudinal direction of the wire 3 . The upper part includes an exposed section, and the aluminum foil layer 303 on the exposed section is exposed.

As shown in FIG. 1 , a plurality of the terminal modules 2 and a plurality of the wires 3 are arranged adjacent to one another in a one-to-one correspondence, and the common ground member 4 is wrapped around the exposed section of the wires 3, and the plurality of the wires The wires 3 are fixed at the same time, and are in contact with the aluminum foil layers 303 of the exposed sections on each of the wires 3 to share the ground, thereby improving the crosstalk between signals and enhancing the shielding capability.

As shown in FIG. 3 , in some embodiments of the present application, the common ground member 4 is an annular closed structure and includes an arched portion 402 and an enclosing portion 401 in the circumferential direction thereof, and the arched portion 402 is provided with There are a plurality of curved protuberances, and the enclosed portion 401 is in the shape of a flat plate or is similar to or the same as the shape of the arched portion 402; A plurality of through holes 403 are formed, the shape of the through holes 403 is adapted to the shape of the cross section of the wire 3, and the outer circumference of the aluminum foil layer 303 on the exposed section of each wire 3 is attached to the The inner wall of the through hole 403; in other embodiments of the present application, the shape of the arched portion 402 can be designed according to actual needs, and correspondingly, the shape of the enclosed portion 401 can also be designed according to the arched portion The shape of the portion 402 can be adapted and adjusted, and the outer periphery of the aluminum foil layer 303 can also be attached to the inner wall of the through hole 403, thereby realizing the common ground of the aluminum foil layer 303 of each of the wires 3. The crosstalk between signals in each of the wires 3 is improved.

As shown in FIG. 1 , in some embodiments of the present application, each of the terminal modules 2 further includes a shielding member 6; Inside the shielding member 6 , the shielding member 6 plays a role of shielding and protecting the signals in the terminal module 2 .

As shown in FIG. 1 , the common ground member 4 and each of the shielding members 6 are connected and fixed, so that the aluminum foil layers 303 of the wires 3 located on each of the shielding members 6 are connected to each other to achieve common grounding , which further optimizes the problem of signal crosstalk.

As shown in FIGS. 4-5 , in some embodiments of the present application, the signal module 1 further includes a plastic sealing body 7 ; the welding places of the wires 3 and the terminals 5 are plastically sealed inside the plastic sealing body. The free ends of the terminals 5 and the free ends of the wires 3 are away from each other and both extend out of the plastic packaging body 7. The plastic packaging body 7 can prevent the welding place from falling off or breaking due to collision, vibration and other factors. even the problem.

As shown in FIG. 1 and FIG. 6 , in some embodiments of the present application, a plurality of elastic pieces 8 are provided on the arched portion 402 , and the plastic sealing body includes a first side surface 701 and a first side surface 701 and a first side surface 701 and a first side surface 701 and a second side surface disposed opposite to each other in the thickness direction thereof. Two side surfaces 702, the first side 701 and the second side 702 are provided with a plurality of openings 9, the openings 9 on the first side 701 expose the elastic piece 8, and the openings 9 on the second side The opening 9 on the side surface 702 exposes the enclosing portion 401 . As shown in FIG. 1 and FIGS. 4-7 , in some embodiments of the present application, the line backplane connector includes a plurality of the signal modules 1 stacked, and a plurality of the signal modules 1 are stacked; one signal module 1 is stacked; The free end of the elastic piece 8 of the common ground member 4 of the module 1 passes through the window 9 of the plastic body of the other signal module 1 and the common ground of the other signal module 1 The enveloping portion 401 of the element 4 abuts against. Through the above design, the aluminum foil layers 303 on each of the wires 3 between the signal modules 1 that are stacked on top of each other can be connected to a common ground, which further reduces the crosstalk of the whole product, thereby enhancing the overall performance of the present application. the shielding effect of the backplane connector described above.

As shown in FIG. 1 , in some embodiments of the present application, each terminal module 2 further includes a fixing block 201 , and the fixing block 201 is wrapped and arranged in the shielding member 6 ; The direction includes a free end, a middle part and a welding end (not numbered) in sequence, the middle part of the terminal 5 is fixed on the fixing block 201, and the free end and the welding end of the terminal 5 are away from each other and protrude from the fixing block. 201; The fixing block 201 can not only prevent the welding end of the terminal 5 from being bumped and scratched, but also communicate with the base of the wire backplane connector, further reducing signal crosstalk and enhancing the overall shielding effect of the product.

As shown in FIGS. 7-8, in some embodiments of the present application, the cable backplane connector further includes a base 10, and the base 10 is provided with a plurality of slots (not numbered); The signal modules 1 are respectively inserted into one of the slots, and the shielding members 6 of each of the terminal modules 2 of each of the signal modules 1 are fixedly connected by interference fit with the base 10 .

As shown in FIGS. 7-8 , in some embodiments of the present application, the base 10 is a metal base, and the shielding member 6 is electrically connected to the metal base, which further improves the crosstalk between signals , which improves the overall shielding effect of the product; the wire backplane connector of the present application adopts a metal base, and the signal module 1 overlaps the common ground piece 4 with the metal base through the outermost elastic sheet 8 to thereby A common ground is achieved, and the shielding member 6 is also overlapped with the metal base to share the ground, thereby realizing the common ground at both ends of the product as a whole, further improving the problem of signal crosstalk and enhancing the overall shielding effect of the product .

In some embodiments of the present application, a convex hull (not shown) or an elastic member (not shown) is provided on the shielding member 6 at a position in contact with the base 10; and/or, the base A convex hull or an elastic member is provided on the position 10 in contact with the shielding member 6; the specific interference fit method can be adjusted according to actual needs.

As shown in FIG. 1 , in some embodiments of the present application, the cross-sectional shape of the shielding member 6 in its longitudinal direction includes a mouth shape, an O shape, a D shape, a U shape, a C shape and an L shape. The shape can be appropriately adjusted according to actual needs to meet the needs of reducing crosstalk and enhancing shielding capability; the longitudinal direction of the terminal 5 is adapted to the longitudinal direction of the shielding member 6 to reduce crosstalk and enhance shielding. Effect.

As shown in FIGS. 7-8 , in some embodiments of the present application, the arrangement of each of the signal modules 1 in the line backplane connector includes a stacking arrangement between upper and lower layers, and an arrangement between the upper and lower layers. The opposite setting method or the corresponding staggered setting method, the arrangement method of a plurality of the signal modules 1 located on the same layer includes the corresponding setting method of "side by side"; for the signal modules 1 on the back of the line The arrangement in the board connector can be fully varied and adjusted according to actual needs.

As shown in FIG. 1-2, in some embodiments of the present application, two inner wires composed of the inner core 301 and the first insulating layer 302 are jointly wrapped in the aluminum foil layer 303, and then are covered by the first insulating layer 303. The two insulating layers 304 are wrapped to form a wire 3 having a pair of parallel inner cores 301. The above two inner cores 301 are respectively welded to one terminal 5, and the above two terminals 5 can form a pair of signal differential right.

It can be understood that the longitudinal direction, width direction and thickness direction of the above components are all compatible with the longitudinal direction, width direction and thickness direction of the wire backplane connector.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims. In addition, specific examples are used in the description to illustrate the principles and implementations of the present application. The descriptions of the above embodiments are only used to help understand the methods and core ideas of the present application, and the contents of this description should not be construed as limitations on the present application. .

Claims (10)

1. A wire backplane connector comprising a signal module;

the signal module comprises a plurality of terminal modules, a plurality of wires and a common ground piece;

each terminal module comprises a terminal which is respectively connected with one lead in a welding way;

the wire is sequentially provided with an inner core, a first insulating layer, an aluminum foil layer and a second insulating layer from inside to outside in the radial direction, the wire comprises an exposed section in the longitudinal direction, and the aluminum foil layer positioned on the exposed section is exposed;

the common grounding piece is coated on the exposed section of each lead, fixes the leads at the same time, and is in contact with the aluminum foil layer of the exposed section on each lead to be in common grounding.

2. The wire backplane connector according to claim 1, wherein the common ground member is of a ring-shaped closed structure and includes, in a circumferential direction thereof, a raised portion provided with a plurality of curved ridges and an enclosing portion which is of a flat plate shape or is similar or identical in shape to the raised portion;

the arched portion and the inclusion portion are correspondingly attached in the width direction of the arched portion and the inclusion portion to form a plurality of through holes, the shapes of the through holes are matched with the shapes of the cross sections of the wires, and the periphery of the aluminum foil layer on the exposed section of each wire is attached to the inner wall of each through hole.

3. The wire backplane connector of claim 2, wherein each of the terminal modules further comprises a shield;

the welding positions of the terminal modules and the leads correspondingly connected with the terminal modules are enclosed in the shielding piece;

the common ground part and each shielding part are fixedly connected.

4. The wire backplane connector of claim 3, wherein the signal module further comprises a plastic package body;

the welding parts of the leads and the terminals are plastically packaged in the plastic package body, and the free ends of the terminals and the free ends of the leads are deviated from each other and extend out of the plastic package body.

5. The wire backplane connector of claim 4, wherein the arching portion is provided with a plurality of spring pieces, the plastic package body includes a first side surface and a second side surface which are opposite to each other in a thickness direction of the plastic package body, the first side surface and the second side surface are both provided with a plurality of windows, the windows on the first side surface expose the spring pieces, and the windows on the second side surface expose the enclosure portions.

6. The wire backplane connector of claim 5, wherein the wire backplane connector comprises a plurality of the signal module stackups, the plurality of signal modules being arranged in a stack;

the free end of the elastic sheet of the common ground piece of one signal module passes through the window opening of the plastic package body of the other signal module to be abutted against the enclosure part of the common ground piece of the other signal module.

7. The wire backplane connector of claim 5, wherein each of the terminal modules further comprises a retention block, the retention block being disposed around the shield;

the terminal sequentially comprises a free end, a middle part and a welding end in the longitudinal direction, the middle part of the terminal is fixed on the fixing block, and the free end and the welding end of the terminal deviate from each other and extend out of the fixing block.

8. The wire backplane connector of claim 3, further comprising a base, the base having a plurality of slots;

each signal module is inserted into one slot, and the shielding piece of each terminal module of each signal module is in interference fit with the base to be fixedly connected.

9. The wire backplane connector of claim 8, wherein the base is a metal base;

a convex hull or an elastic piece is arranged on the position, which is contacted with the base, of the shielding piece;

and/or a convex hull or an elastic piece is arranged on the position, contacted with the shielding piece, of the base.

10. The wire backplane connector according to any one of claims 1 to 9, wherein the cross-sectional shape of the shield in the longitudinal direction thereof includes a square, an O-shape, a D-shape, a U-shape, a C-shape, and an L-shape;

the longitudinal direction of the terminal is adapted to the longitudinal direction of the shield.

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