CN219554079U - High frequency connector with independent coupler - Google Patents

Abstract

The utility model discloses a high-frequency connector with an independent coupler, which comprises an insulating body, a front terminal group and a rear terminal group; the rear terminal group comprises a plurality of signal terminal pairs and a plurality of grounding terminals, and each signal terminal pair consists of two signal terminals which are arranged side by side at intervals; the rear side of the insulating body is fixed with an independent coupler which comprises an insulating cover plate and a metal layer. Through being provided with independent coupler, utilize the metal level of independent coupler to be C shape cladding structure to each signal terminal pair to cooperate each short circuit portion respectively with each ground terminal's main part conduction connection, form a plurality of short circuit loop points, make the signal terminal pair of transmission high-speed signal be in a relatively independent space, radiation/reflection that the high-speed signal transmission process produced, resonance can be absorbed fast/coupled through the metal level, in order to satisfy the requirement of higher transmission rate, improve signal quality, thereby realize high-speed transmission.

Description

High frequency connector with independent coupler

Technical Field

The utility model relates to the connector field technology, in particular to a high-frequency connector with an independent coupler.

Background

PCI-E (PCI-Express) is a common bus specification, which was originally advocated and promoted by Intel (also known as the previous 3 GIO), and its final design purpose is to replace the bus transmission interface inside the existing computer system, which includes not only the display interface but also various application interfaces such as CPU, PCI, HDD, network. Thus, the method can be used for solving the bottleneck problem of data transmission in the current system like Hyper-Transport, and is well prepared for the future improvement of the performance of peripheral products.

The present PCI-E connector comprises an insulating body, a front terminal group and a rear terminal group; the insulating body is provided with an inserting port with a forward opening; the front terminal group and the rear terminal group are arranged front and back and are fixed in the insulating body, the front terminal group is provided with a plurality of front contact parts, the plurality of front contact parts extend into the inserting port, the rear terminal group is provided with a plurality of rear contact parts, the plurality of rear contact parts extend into the inserting port and are positioned above the rear sides of the plurality of front contact parts, the rear terminal group comprises a plurality of signal terminal pairs and a plurality of grounding terminals, the plurality of signal terminal pairs and the plurality of grounding terminals are arranged at staggered transverse intervals, and each signal terminal pair consists of two signal terminal intervals side by side. Although a grounding terminal is arranged between the signal terminal pairs, the grounding terminal has limited coverage area and poor noise absorption capability, and cannot meet the transmission requirement of higher frequency signals.

With development of technology and popularization and application of digital signals, demands for transmission rate of digital signals are increased day and night, for example, gen4 transmission rate standard of an M.2 connector for connecting solid state disk data transmission is 16GT/s, gen5 transmission rate standard is improved to 32GT/s, and transmission rate is improved by two times on the basis of the original transmission rate. However, due to the increase of the transmission rate, the more intense the problems such as reflection, resonance, crosstalk, etc. generated in the signal transmission process, the signal transmission failure, code staggering or rate decrease are caused, and the existing PCI-E connector structure cannot meet the requirement of higher transmission rate, so a new connector structure is urgently needed to solve the above problems.

Disclosure of Invention

In view of the above, the present utility model aims at solving the drawbacks of the prior art, and it is a primary object of the present utility model to provide a high frequency connector with an independent coupler, which can effectively solve the problem that the conventional connector cannot meet the requirement of higher transmission rate.

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

a high-frequency connector with independent coupler comprises an insulating body, a front terminal group and a rear terminal group; the insulating body is provided with an inserting port with a forward opening; the front terminal group and the rear terminal group are arranged back and forth and are fixed in the insulating body, the front terminal group is provided with a plurality of front contact parts, the plurality of front contact parts extend into the inserting port, the rear terminal group is provided with a plurality of rear contact parts, the plurality of rear contact parts extend into the inserting port and are positioned above the rear sides of the plurality of front contact parts, the rear terminal group comprises a plurality of signal terminal pairs and a plurality of grounding terminals, the plurality of signal terminal pairs and the plurality of grounding terminals are arranged at staggered transverse intervals, and each signal terminal pair consists of two signal terminal pairs which are arranged side by side at intervals; the rear side of the insulating body is fixedly provided with an independent coupler, the independent coupler comprises an insulating cover plate and a metal layer, the insulating cover plate is fixed on the rear side of the insulating body, the metal layer is arranged on the insulating cover plate and is of a C-shaped cladding structure for each signal terminal pair, a plurality of short-circuit parts extend out of the metal layer, and the short-circuit parts are respectively connected with the main bodies of the grounding terminals in a conducting manner.

As a preferable scheme, the metal layer is formed by stamping a metal sheet, is fixed in the insulating cover plate by insert molding, and has stable and reliable structure.

As a preferable scheme, the two ends of the rear side surface of the insulating body are concavely provided with fixing grooves, the insulating cover plate comprises a first base part and two first fixing parts, the two first fixing parts respectively extend forward and integrally at the front side surfaces of the two ends of the first base part, and the two first fixing parts are respectively inserted into the two fixing grooves for fixing; the metal layer comprises a second base and two second fixing parts, the second base is matched with the first base and is fixed in the first base in an embedded mode, the short circuit part integrally extends out of the first base, the two second fixing parts respectively bend and extend out of the two ends of the second base integrally, and the two second fixing parts are respectively fixed in the first fixing parts in an embedded mode.

As a preferable scheme, the inner wall of the fixed groove is concavely provided with a buckling groove, the outer side wall of the first fixed part is convexly provided with a convex buckle, and the convex buckle is matched and buckled with the buckling groove to fix so as to form a detachable structure, and the detachable structure can be disassembled and assembled according to the requirement, so that the detachable structure is convenient to use.

As a preferable scheme, a plurality of through grooves are formed in the front side and the rear side of the first base in a penetrating manner, and the short-circuit parts are respectively located at the edges of the through grooves and extend forwards to form ventilation gaps, so that the ventilation performance of the product is improved.

As a preferable scheme, the front and rear sides of the second base are penetrated and formed with a plurality of first through holes, the first through holes are buried in the first base so that the second base and the first base are combined firmly and reliably, the two sides of the second fixing part are penetrated and formed with second through holes, and the second through holes are buried in the first fixing part so that the second fixing part and the first fixing part are combined firmly and reliably.

As a preferable scheme, the short-circuit part is in a fish fork shape, and the short-circuit part is fixedly clamped with the main body of the grounding terminal from back to front to be connected in a conducting manner, so that the short-circuit part is connected with the grounding terminal more stably and reliably.

As a preferable mode, at least two shorting parts are arranged for each grounding terminal, and the at least two shorting parts are vertically arranged at intervals and are connected with the main body of the grounding terminal in a conducting manner so as to realize better high-frequency characteristics.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, and in particular, the technical scheme can be as follows:

through being provided with independent coupler, utilize independent coupler's metal level to each signal terminal pair be C shape cladding structure, and cooperate each short circuit portion respectively with each ground terminal's main part conduction connection, form a plurality of short circuit loop points, make the signal terminal pair of transmission high-speed signal be in a relatively independent space, radiation/reflection that the high-speed signal transmission process produced, resonance can be absorbed fast/coupled through the metal level, in order to satisfy higher transmission rate's requirement, improve signal quality, thereby realize high-speed transmission, and independent coupler can install additional as required, high-low version connector can share, can save because of signal speed promotes, high-low version connector structure's difference leads to all connector moulds, automatic equipment's development expense, save development input cost.

In order to more clearly illustrate the structural features and efficacy of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is an assembled perspective view of a preferred embodiment of the present utility model;

FIG. 2 is an assembled perspective view of another angle of the preferred embodiment of the present utility model;

FIG. 3 is an exploded view of a preferred embodiment of the present utility model;

FIG. 4 is an exploded view of another angle of the preferred embodiment of the present utility model;

FIG. 5 is a partial assembly view of a preferred embodiment of the present utility model;

FIG. 6 is a partial assembly view of another angle of the preferred embodiment of the present utility model;

FIG. 7 is a cross-sectional view of a preferred embodiment of the present utility model;

FIG. 8 is another cross-sectional view of the preferred embodiment of the present utility model;

FIG. 9 is a further cross-sectional view of the preferred embodiment of the present utility model;

FIG. 10 is a further cross-sectional view of the preferred embodiment of the present utility model;

FIG. 11 is a partial schematic perspective view of a preferred embodiment of the present utility model;

FIG. 12 is a front view of a part of the principle of the preferred embodiment of the present utility model;

FIG. 13 is a diagram of a differential impedance (Differential Impedance) simulation test of the transmission of signals from a circuit board to an electronic card in accordance with a preferred embodiment of the present utility model;

FIG. 14 is a diagram of a differential impedance (Differential Impedance) simulation test of signal transmission from an electronic card to a circuit board in accordance with a preferred embodiment of the present utility model;

FIG. 15 is a graph of Insertion Loss (Insertion Loss) simulation test in a preferred embodiment of the present utility model;

FIG. 16 is a Return Loss (Return Loss) simulation test chart in a preferred embodiment of the present utility model;

FIG. 17 is a simulation test chart of near-end crosstalk (Near End Crosstalk) in a preferred embodiment of the present utility model;

fig. 18 is a simulation test chart of far-end crosstalk (Far End Crosstalk) in the preferred embodiment of the present utility model.

The attached drawings are used for identifying and describing:

10. insulation body 11, plug-in port

12. Fixing groove 13 and fastening groove

20. Front terminal group 201, front contact portion

30. Rear terminal group 31, ground terminal

311. Main body 32, signal terminal

301. Rear contact 40, independent coupler

41. Insulating cover 411, first base

412. First fixing portion 413, protruding buckle

42. Metal layer 421, second base

422. Second fixing portion 401 and short-circuit portion

402. Through groove 403, first through hole

404. And a second through hole.

Detailed Description

Referring to fig. 1 to 12, a specific structure of a preferred embodiment of the present utility model is shown, which includes an insulative housing 10, a front terminal set 20 and a rear terminal set 30.

The insulating body 10 is provided with a plug-in port 11 with a forward opening; in this embodiment, both ends of the rear side of the insulating body 10 are concavely provided with a fixing groove 12, and the inner wall of the fixing groove 12 is concavely provided with a fastening groove 13.

The front terminal group 20 and the rear terminal group 30 are arranged back and forth and fixed in the insulating body 10, the front terminal group 20 is provided with a plurality of front contact parts 201, the plurality of front contact parts 201 extend into the plug-in port 11, the rear terminal group 30 is provided with a plurality of rear contact parts 301, the plurality of rear contact parts 301 extend into the plug-in port 11 and are positioned above the rear sides of the plurality of front contact parts 201, the rear terminal group 30 comprises a plurality of signal terminal pairs and a plurality of grounding terminals 31, the plurality of signal terminal pairs and the plurality of grounding terminals 31 are arranged at staggered transverse intervals, and each signal terminal pair consists of two signal terminals 32 at intervals side by side.

The rear side of the insulating body 10 is fixed with an independent coupler 40, the independent coupler 40 comprises an insulating cover plate 41 and a metal layer 42, the insulating cover plate 41 is fixed on the rear side of the insulating body 10, the metal layer 42 is arranged on the insulating cover plate 41 and has a C-shaped cladding structure for each signal terminal pair, and a plurality of shorting parts 401 extend from the metal layer 42, and the shorting parts 401 are respectively connected with the main body 311 of each grounding terminal 31 in a conductive manner.

Specifically, the insulating cover 41 includes a first base 411 and two first fixing portions 412, the two first fixing portions 412 extend forward and integrally at front sides of two ends of the first base 411, the two first fixing portions 412 are respectively inserted into the two fixing slots 12 for fixing, and a protruding buckle 413 is protruding on an outer side wall of the first fixing portion 412, and the protruding buckle 413 is fastened and fixed with the buckling slot 13 to form a detachable structure, so that the insulating cover can be detached as required, and is convenient for use. In the present embodiment, a plurality of through slots 402 are formed on the front and rear sides of the first base 411, and the plurality of shorting portions 401 are respectively located at edges of the plurality of through slots 402 and extend forward to form ventilation gaps, so as to improve ventilation performance of the product.

The metal layer 42 is formed by stamping a metal sheet, the metal layer 42 is fixedly embedded in the insulating cover plate 41, and the structure is stable and reliable; specifically, the metal layer 42 includes a second base 421 and two second fixing portions 422, the second base 421 is adapted to the first base 411 and is fixed in the first base 411 by insert molding, the short circuit portion 401 integrally extends on the first base 421, the two second fixing portions 422 respectively integrally bend and extend at two ends of the second base 421, and the two second fixing portions 422 are respectively fixed in the first fixing portion 412 by insert molding. In the present embodiment, a plurality of first through holes 403 are formed on the front and rear sides of the second base 421, the plurality of first through holes 403 are buried in the first base 411, so that the second base 421 and the first base 411 are firmly combined, the second through holes 404 are formed on the two sides of the second fixing portion 422, and the second through holes 404 are buried in the first fixing portion 412, so that the second fixing portion 422 and the first fixing portion 412 are firmly combined. And, this short circuit portion 401 is the fish fork, and this short circuit portion 401 is fixed with the main part 311 joint of ground terminal 31 and is switched on and connected by the back to the front for the short circuit portion 401 is connected with ground terminal 31 more reliable and stable. In addition, at least two shorting portions 401 are disposed for each grounding terminal 31, and the at least two shorting portions 401 are vertically arranged at intervals and are connected with the main body 311 of the grounding terminal 31 in a conducting manner, so as to achieve better high-frequency characteristics.

The assembly process of this embodiment is described in detail as follows:

when assembling, first, the front terminal group 20 is assembled on the insulator 10 from front to back, and the rear terminal group 30 is assembled on the insulator 10 from back to front; next, when the independent coupler 40 is required to be assembled, the independent coupler 40 is assembled onto the insulating body 10 from the back to the front, after the independent coupler 40 is assembled in place, the two first fixing portions 412 are respectively inserted into the two fixing grooves 12, the protruding buckles 413 are engaged with the buckling grooves 13 to be buckled and fixed, and meanwhile, the short-circuit portions 401 are respectively connected with the main bodies 311 of the grounding terminals 31 in a conductive manner.

When the electronic card is used, the product is abutted against the circuit board, the front terminal group 20 and the rear terminal group 30 are welded and conducted with the circuit board, the electronic card is inserted into the insertion port 11, and after the electronic card is inserted in place, the front contact part 201 and the rear contact part 301 are contacted and conducted with the electronic card, so that signals are transmitted between the electronic card and the circuit board through the electronic card, as the metal layer 42 is of a C-shaped cladding structure for each signal terminal pair, and each short circuit part 401 is respectively conducted and connected with the main body 311 of each grounding terminal 31, a plurality of short circuit points are formed, the signal terminal pair for transmitting high-speed signals is positioned in a relatively independent space, and radiation/reflection and resonance generated in the high-speed signal transmission process can be rapidly absorbed/coupled through the metal layer 42, so that the requirement of higher transmission rate is met, the signal quality is improved, and high-speed transmission is realized.

The following performance tests are carried out on the product:

as shown in fig. 13, a simulation test chart of differential impedance (Differential Impedance) of signal transmission from the circuit board to the electronic card is shown, and the test result is passing from the simulation test chart.

As shown in fig. 14, a simulation test chart of differential impedance (Differential Impedance) for signal transmission from the electronic card to the circuit board; from the simulation test chart, the test result is passed.

As shown in fig. 15, the Insertion Loss (Insertion Loss) simulation test chart, from which the test result is passed.

As shown in fig. 16, a Return Loss (Return Loss) simulation test chart is shown, and from the simulation test chart, the test result is passing.

As shown in fig. 17, the near-end crosstalk (Near End Crosstalk) is a simulation test pattern, from which the test result is passed.

As shown in fig. 18, a far-end crosstalk (Far End Crosstalk) simulation test pattern is shown, from which the test result is passed.

In conclusion, all performance tests of the product are passed, the product has better high-frequency performance, and the requirement of high-speed signal transmission is completely met.

The design focus of the utility model is that: through being provided with independent coupler, utilize independent coupler's metal level to each signal terminal pair be C shape cladding structure, and cooperate each short circuit portion respectively with each ground terminal's main part conduction connection, form a plurality of short circuit loop points, make the signal terminal pair of transmission high-speed signal be in a relatively independent space, radiation/reflection that the high-speed signal transmission process produced, resonance can be absorbed fast/coupled through the metal level, in order to satisfy higher transmission rate's requirement, improve signal quality, thereby realize high-speed transmission, and independent coupler can install additional as required, high-low version connector can share, can save because of signal speed promotes, high-low version connector structure's difference leads to all connector moulds, automatic equipment's development expense, save development input cost.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model are still within the scope of the technical solutions of the present utility model.

Claims (8)

1. A high-frequency connector with independent coupler comprises an insulating body, a front terminal group and a rear terminal group; the insulating body is provided with an inserting port with a forward opening; the front terminal group and the rear terminal group are arranged back and forth and are fixed in the insulating body, the front terminal group is provided with a plurality of front contact parts, the plurality of front contact parts extend into the inserting port, the rear terminal group is provided with a plurality of rear contact parts, the plurality of rear contact parts extend into the inserting port and are positioned above the rear sides of the plurality of front contact parts, the rear terminal group comprises a plurality of signal terminal pairs and a plurality of grounding terminals, the plurality of signal terminal pairs and the plurality of grounding terminals are arranged at staggered transverse intervals, and each signal terminal pair consists of two signal terminal pairs which are arranged side by side at intervals; the method is characterized in that: the rear side of the insulating body is fixedly provided with an independent coupler, the independent coupler comprises an insulating cover plate and a metal layer, the insulating cover plate is fixed on the rear side of the insulating body, the metal layer is arranged on the insulating cover plate and is of a C-shaped cladding structure for each signal terminal pair, a plurality of short-circuit parts extend out of the metal layer, and the short-circuit parts are respectively connected with the main bodies of the grounding terminals in a conducting manner.

2. The high frequency connector with independent coupler according to claim 1, wherein: the metal layer is formed by stamping a metal sheet, and is fixed in the insulating cover plate by insert molding.

3. The high frequency connector with independent coupler according to claim 2, wherein: the two ends of the rear side surface of the insulating body are concavely provided with fixing grooves, the insulating cover plate comprises a first base part and two first fixing parts, the two first fixing parts respectively extend forwards integrally at the front side surfaces of the two ends of the first base part, and the two first fixing parts are respectively inserted into the two fixing grooves for fixing; the metal layer comprises a second base and two second fixing parts, the second base is matched with the first base and is fixed in the first base in an embedded mode, the short circuit part integrally extends out of the first base, the two second fixing parts respectively bend and extend out of the two ends of the second base integrally, and the two second fixing parts are respectively fixed in the first fixing parts in an embedded mode.

4. A high frequency connector with independent coupler according to claim 3, characterized in that: the inner wall of the fixed slot is concavely provided with a buckling slot, the outer side wall of the first fixed part is convexly provided with a convex buckle, and the convex buckle is matched with the buckling slot to be buckled and fixed.

5. A high frequency connector with independent coupler according to claim 3, characterized in that: the front side surface and the rear side surface of the first base part are penetrated and formed with a plurality of through grooves, and the plurality of short-circuit parts are respectively positioned at the edges of the plurality of through grooves and extend forwards.

6. A high frequency connector with independent coupler according to claim 3, characterized in that: the front side surface and the rear side surface of the second base part are penetrated and formed with a plurality of first through holes, the plurality of first through holes are buried in the first base part, the two side surfaces of the second fixing part are penetrated and formed with second through holes, and the second through holes are buried in the first fixing part.

7. The high frequency connector with independent coupler according to claim 1, wherein: the short circuit part is in a fish fork shape, and the short circuit part is fixedly clamped with the main body of the grounding terminal from back to front to be connected in a conducting manner.

8. The high frequency connector with independent coupler according to claim 1, wherein: at least two short-circuit parts are arranged for each grounding terminal, are vertically arranged at intervals and are in conductive connection with the main body of the grounding terminal.