CN116093680A

CN116093680A - High-speed PCIe connector

Info

Publication number: CN116093680A
Application number: CN202310254364.1A
Authority: CN
Inventors: 屈峰成; 牛林; 邓瑞林
Original assignee: Shenzhen West Point Precision Technology Co ltd
Current assignee: Shenzhen West Point Precision Technology Co ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-05-09
Anticipated expiration: 2043-03-16
Also published as: CN116093680B; WO2024187716A1

Abstract

The invention discloses a high-speed PCIe connector, which relates to the technical field of high-speed connectors and solves the problem that the existing traditional structure cannot meet the performance requirement of high differential signal rate, and comprises a connector body, wherein the connector body is provided with a plug hole; the circuit further comprises a plurality of signal terminals and a ground terminal; the protective component is used for reducing sliding friction on the outer surfaces of the signal terminal and the ground terminal when the plug card is separated from the plug hole, and the head part of the signal terminal and the head part of the ground terminal adopt different designs, particularly the head part of the signal terminal adopts a hook-free mode, so that the Stub is reduced, and the SI performance is improved; the ground terminal head adopts a hook structure, so that the risks of exposing the signal terminal and the ground terminal head in the process of manufacturing the shielding sheet, and the like are avoided, and the risk of crossing pins in card insertion is avoided.

Description

High-speed PCIe connector

Technical Field

The invention relates to the technical field of high-speed connecting plates, in particular to a high-speed PCIe connector.

Background

The existing high-speed connector generally adopts a metal terminal for signal or current transmission inserted into a plastic housing main body to achieve the purpose of transmitting signals or currents, and most of the existing signal and ground pins have the same terminal structure, but the requirements on signal transmission are higher and higher due to the high-speed development of technology, and particularly, the differential signal rate of PCie6.0 or 224Gbps is higher and higher, so that the performance requirements cannot be met by the existing traditional structure. To this end, we propose a PCIe-fast connector.

Disclosure of Invention

The present invention is directed to a PCIe high speed connector, which solves the above-mentioned problems.

In order to achieve the above purpose, the present invention provides the following technical solutions: a high-speed PCIe connector comprises a connector body, wherein a plug hole is formed in the connector body; the circuit is characterized by further comprising a plurality of signal terminals and a plurality of ground terminals; and the protection component is used for reducing sliding friction on the outer surfaces of the signal terminals and the ground terminals when the plug card is separated from the plug hole.

Preferably, the signal terminal end adopts a hook-free mode, and the ground terminal end adopts a hook mode.

Preferably, the signal terminal and the ground terminal are both provided with barb mechanisms on the sides, and the ground terminal is provided with notches corresponding to the barb mechanisms on the signal terminal.

Preferably, the side surface of the signal terminal is also provided with a protruding mechanism, and the protruding mechanism and the barb mechanism are distributed in a staggered manner.

Preferably, a distance between the signal terminal and the adjacent ground terminal is greater than a distance between the adjacent two signal terminals.

Preferably, the two ends of the device body are fixedly connected with fixing sheets, and a plurality of shielding sheets are arranged on the side face of the device body.

Preferably, the protection component comprises a movable rod which is inserted and matched in the device body, an elastic pull rope is connected between the movable rod and the device body in a hanging mode, a limiting plate is fixedly connected to the movable rod, a clamping component which is used for automatically clamping the limiting plate is arranged in the inserting hole, and connecting components which are matched with the clamping component and simultaneously act on the signal terminal and the ground terminal are arranged on two sides of the movable rod.

Preferably, the connecting assembly comprises a first connecting rod, the signal terminal and the ground terminal are hinged with the first connecting rod, the end part of the first connecting rod is hinged with a second connecting rod fixedly connected with the movable rod, and the second connecting rod moves on a sliding groove in the device body.

Preferably, the clamping assembly comprises a movable plate, two arc clamping plates are symmetrically distributed on one side of the movable plate, the arc clamping plates are rotationally connected with the movable plate through torsion springs, the bottoms of the arc clamping plates are matched with the limiting plates, and a pressing assembly for driving the arc clamping plates to rotate so that the limiting plates are separated is arranged above the arc clamping plates.

Preferably, the pressing assembly comprises a connecting rod fixedly connected with the body, the arc clamping plates are located between the two connecting rods, and the end parts of the connecting rods are fixedly connected with pressing rods which are in pressing fit with the arc clamping plates.

Preferably, the pressing assembly further comprises a pressing plate in pressing fit with the insertion card inserted into the insertion hole, a limiting rod inserted into the device body is fixedly connected to the pressing plate, the limiting rod is fixedly connected with the movable plate, and a pressure spring is connected between the pressing plate and the pressing rod in a hanging fit mode.

Preferably, the bottom of the arc clamping plate is L-shaped, so that the arc clamping plate is ensured to clamp the limiting plate.

Preferably, the top surface of the pressing plate is adhered with a protective layer in pressing fit with the bottom of the plug-in card, so that the pressing effect is ensured.

Preferably, the connecting rods are of U-shaped structures, the distance between the two connecting rods is larger than the sum of the moving distances of the two arc clamping plates, and the arc clamping plates are prevented from moving and colliding with the connecting rods.

Compared with the prior art, the invention has the beneficial effects that:

1. the signal terminal head and the ground terminal head adopt different designs, specifically, the signal terminal head adopts a hook-free mode, so that the Stub is reduced, and the SI performance is improved; the ground terminal head adopts the hook structure, so that the risks of exposing the signal terminal and the ground terminal head, crossing pins during card insertion and the like can not be caused in the manufacturing process of pressing or welding the shielding sheet, and the like.

2. The fixed positions of the signal terminal and the ground terminal body and the device body are provided with barb mechanisms (used for providing the holding force of the signal terminal and the ground terminal in the device body), the barb mechanisms are staggered, and the ground terminal at the barb mechanism of the signal terminal is subjected to notch abdication; ensuring the continuity of the gap between the signal terminal pin and the ground terminal pin as much as possible; thereby ensuring the consistency of the contact impedance of the product and ensuring better SI performance.

3. The barb mechanism is arranged on one side of the left side and the right side of the signal terminal, the bulge mechanism is arranged on the other side of the signal terminal, and the bulge mechanism and the barb mechanism are staggered in position, so that the consistency of impedance is ensured; providing better SI performance.

4. The gap between the signal terminals is smaller than the gap between the signal terminals and the ground terminal, so that the coupling property between differential signals is better; thereby ensuring better SI performance.

5. When the plug-in card is separated from the plug-in hole and moves, the arc-shaped clamping plate clamps the limiting plate, the movable rod is driven to be matched with the first connecting rod and the second connecting rod, so that the signal terminal and the ground terminal are far away from the plug-in card, sliding friction on the outer surfaces of the signal terminal and the ground terminal is reduced when the plug-in card is separated from the plug-in hole, loss in the plug-in process is reduced, durability required by high-speed performance transmission is guaranteed, when the plug-in card is completely separated from the plug-in hole, the arc-shaped clamping plate is matched with the pressing rod under the action of the pressure spring, and the arc-shaped clamping plate rotates, so that the clamping on the limiting plate is released at the bottom of the arc-shaped clamping plate.

Drawings

FIG. 1 is a graph of return loss versus prior art structure of the present invention;

FIG. 2 is a graph of the near-end crosstalk contrast between the structure of the present invention and a prior art structure;

FIG. 3 is a diagram illustrating the far-end crosstalk between the present structure and the prior structure;

FIG. 4 is a graph showing the characteristic impedance of the structure of the present invention compared with that of the conventional structure;

FIG. 5 is a schematic diagram of the overall structure of the present invention;

FIG. 6 is a schematic diagram illustrating the overall structure of the present invention;

FIG. 7 is a schematic diagram showing the distribution of the signal terminals and ground terminals of FIG. 6;

FIG. 8 is a schematic diagram of the signal and ground terminals of FIG. 7;

FIG. 9 is a schematic cross-sectional view of the end structure of the body of FIG. 5;

FIG. 10 is a schematic view of the structure of FIG. 9 in a disassembled state;

FIG. 11 is a schematic side view of the structure of FIG. 9;

FIG. 12 is an enlarged view of the structure in area A of FIG. 11;

FIG. 13 is a schematic view of the structure of FIG. 12 in a disassembled state;

fig. 14 is a schematic view of the structure of fig. 13 in a disassembled state.

In the figure: 1-a device body; 2-plug holes; 3-signal terminals; a 4-ground terminal; a 5-barb mechanism; 6-notch; 7-a bump mechanism; 8-fixing sheets; 9-shielding sheets; 10-a protective component; 11-a movable rod; 12-elastic pull ropes; 13-limiting plates; 14-a connection assembly; 15-a first connecting rod; 16-a second connecting rod; 17-a clamping assembly; 18-a movable plate; 19-arc clamping plates; 20-pressing the component; 21-a connecting rod; 22-pressing a rod; 23-pressing plates; 24-limiting rods; 25-compression springs.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-4, the present invention provides a high-speed PCIe connector, including a connector body 1, wherein a socket hole 2 is formed in the connector body 1; also includes a plurality of signal terminals 3 and a plurality of ground terminals 4; and the protection assembly 10 is used for reducing sliding friction on the outer surfaces of the signal terminals 3 and the ground terminals 4 when the plug card is separated from the plug hole 2.

The end part of the signal terminal 3 adopts a non-hooking mode, the end part of the ground terminal 4 adopts a hooking mode, the head part of the signal terminal 3 and the head part of the ground terminal 4 adopt different designs, specifically, the head part of the signal terminal 3 adopts a non-hooking mode, thereby reducing Stub and improving SI performance; the head of the ground terminal 4 adopts a hook structure, so that the risks of exposing the heads of the signal terminal 3 and the ground terminal 4, and the like in the process of pressing in or welding the shielding sheet 9 and the like are avoided.

The side surfaces of the signal terminal 3 and the ground terminal 4 are respectively provided with a barb mechanism 5, the ground terminal 4 is provided with a notch 6 corresponding to the barb mechanism 5 positioned on the signal terminal 3, the side surface of the signal terminal 3 is also provided with a bulge mechanism 7, the bulge mechanism 7 and the barb mechanism 5 are in staggered distribution, the fixed positions of the body of the signal terminal 3 and the ground terminal 4 and the device body 1 are provided with barb mechanisms 5 (used for providing the holding force of the signal terminal 3 and the ground terminal 4 in the device body 1), the barb mechanisms 5 are staggered, and the ground terminal 4 positioned at the barb mechanism 5 of the signal terminal 3 is provided with a notch 6 for abdicating; ensuring the continuity of the gap between the signal terminal 3 pin and the ground terminal 4 pin as much as possible; thereby ensuring the consistency of the contact impedance of the product and ensuring better SI performance, wherein the barb mechanism 5 is arranged on one side of the left and right sides of the signal terminal 3, the bulge mechanism 7 is arranged on the other side, and the bulge mechanism 7 and the barb mechanism 5 are staggered in position, so that the consistency of the impedance is ensured; providing better SI performance.

The distance between the signal terminals 3 and the adjacent ground terminals 4 is larger than the distance between the two adjacent signal terminals 3, and the gap between the signal terminals 3 is smaller than the gap between the signal terminals 3 and the ground terminals 4, so that the coupling property between differential signals is better; thereby ensuring better SI performance.

Fixing sheets 8 are fixedly connected to the two ends of the device body 1, and a plurality of shielding sheets 9 are arranged on the side face of the device body 1.

Referring to fig. 5-14, the protection component 10 includes a movable rod 11 inserted and engaged in the body 1, an elastic pull rope 12 is engaged between the movable rod 11 and the body 1, a limiting plate 13 is fixedly connected to the movable rod 11, a clamping component 17 for automatically clamping the limiting plate 13 is disposed in the insertion hole 2, and connecting components 14 for engaging the clamping components 17 and simultaneously acting on the signal terminal 3 and the ground terminal 4 are disposed on two sides of the movable rod 11.

The connecting assembly 14 comprises a first connecting rod 15, the signal terminal 3 and the ground terminal 4 are both hinged with the first connecting rod 15, the end part of the first connecting rod 15 is hinged with a second connecting rod 16 which is fixedly connected with the movable rod 11, and the second connecting rod 16 moves on a sliding groove in the device body 1.

The clamping assembly 17 comprises a movable plate 18, two arc clamping plates 19 are symmetrically distributed on one side of the movable plate 18, the arc clamping plates 19 are rotationally connected with the bottom of each arc clamping plate 19 through torsion springs and the movable plate 18 to be matched with the limiting plate 13, and a pressing assembly 20 for driving the arc clamping plates 19 to rotate so as to separate the limiting plate 13 is arranged above the arc clamping plates 19.

The pressing assembly 20 comprises a connecting rod 21 which is fixedly connected with the device body 1, the arc clamping plate 19 is positioned between the two connecting rods 21, and the end part of the connecting rod 21 is fixedly connected with a pressing rod 22 which is in pressing fit with the arc clamping plate 19. The pressing assembly 20 further comprises a pressing plate 23 which is in pressing fit with the plug-in card inserted into the plug-in hole 2, a limiting rod 24 in the inserter body 1 is fixedly connected to the pressing plate 23, the limiting rod 24 is fixedly connected with the movable plate 18, and a pressure spring 25 is connected between the pressing plate 23 and the pressing rod 22 in a hanging fit mode.

The bottom of the arc clamping plate 19 is L-shaped, a protective layer in pressing fit with the bottom of the plug-in card is adhered to the top surface of the pressing plate 23, the connecting rods 21 are of U-shaped structures, and the distance between the two connecting rods 21 is larger than the sum of the moving distances of the two arc clamping plates 19.

In this embodiment, the card is inserted into the jack 2, the card tightly abuts against the signal terminal 3 and the ground terminal 4, the signal terminal 3 and the ground terminal 4 are elastically changed in an adaptability manner, in the process of inserting the card, the card abuts against the pressing plate 23, under the action of the limiting rod 24, the pressing plate 23 moves downwards, the pressure spring 25 is pressed, the movable plate 18 drives the arc clamping plate 19 to move downwards, when the bottom of the arc clamping plate 19 contacts with the limiting plate 13, the movable plate 18 continuously descends, the arc clamping plate 19 overcomes the torsion force of the torsion spring to rotate, so that the bottoms of the two arc clamping plates 19 pass over the limiting plate 13 and clamp the bottom of the limiting plate 13, and the arc clamping plate 19 is clamped at the joint of the movable rod 11 and the limiting plate 13, wherein, in order to conveniently display the structure in the jack 2, the protective assembly 10 in fig. 9-14 only shows one group, and the actual number corresponds to the signal terminal 3 and the ground terminal 4 side by side;

when the plug-in card breaks away from, the arc clamping plate 19 of the clamping limiting plate 13 moves upwards, so that the second connecting rod 16 moves upwards, the inclined first connecting rod 15 moves, so that the signal terminal 3 and the ground terminal 4 are far away from the plug-in card, friction loss of the side face of the plug-in card, the signal terminal 3 and the ground terminal 4 is avoided when the plug-in card is pulled upwards, the plug-in card continuously moves upwards, when the plug-in card breaks away from the plug-in hole 2, the top of the arc clamping plate 19 rotates under the action of the pressing rod 22, the bottom of the arc clamping plate 19 is opened, lifting of the limiting plate 13 is loosened, the movable rod 11 resets under the action of the elastic pull rope 12, the signal terminal 3 and the ground terminal 4 reset, and the next plug-in card plug-in connection is facilitated.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A PCIe high speed connector comprising:

the device comprises a device body (1), wherein the device body (1) is provided with a plug hole (2);

characterized by further comprising:

the novel multifunctional electric power cable comprises a plurality of signal terminals (3) and a plurality of ground terminals (4), wherein the end parts of the signal terminals (3) are in a hook-free mode, the end parts of the ground terminals (4) are in a hook mode, barb mechanisms (5) are arranged on the side surfaces of the signal terminals (3) and the ground terminals (4), notches (6) corresponding to the barb mechanisms (5) on the signal terminals (3) are formed in the ground terminals (4), protruding mechanisms (7) are further arranged on the side surfaces of the signal terminals (3), and the protruding mechanisms (7) and the barb mechanisms (5) are in staggered distribution.

2. The PCIe high speed connector of claim 1, wherein: the distance between the signal terminal (3) and the adjacent ground terminal (4) is larger than the distance between the two adjacent signal terminals (3).

3. The PCIe high speed connector of claim 1, wherein: fixing sheets (8) are fixedly connected to two ends of the device body (1), a plurality of shielding sheets (9) are arranged on the side face of the device body (1), and a protection assembly (10) for reducing sliding friction on the outer surfaces of the signal terminals (3) and the ground terminals (4) when the plug-in card is separated from the plug-in hole (2) is further arranged in the plug-in hole (2).

4. The PCIe connector of claim 3 wherein: the protection assembly (10) comprises a movable rod (11) which is inserted and matched in the device body (1), an elastic pull rope (12) is connected between the movable rod (11) and the device body (1) in a hanging mode, a limiting plate (13) is fixedly connected to the movable rod (11), a clamping assembly (17) which is used for automatically clamping the limiting plate (13) is arranged in the inserting hole (2), and connecting assemblies (14) which are matched with the clamping assembly (17) and simultaneously act on the signal terminal (3) and the ground terminal (4) are arranged on two sides of the movable rod (11).

5. The PCIe high speed connector of claim 4, wherein: the connecting assembly (14) comprises a first connecting rod (15), the signal terminal (3) and the ground terminal (4) are hinged to the first connecting rod (15), the end part of the first connecting rod (15) is hinged to a second connecting rod (16) fixedly connected with the movable rod (11), and the second connecting rod (16) moves on a sliding groove in the device body (1).

6. The PCIe high speed connector of claim 5, wherein: the clamping assembly (17) comprises a movable plate (18), two arc clamping plates (19) are symmetrically distributed on one side of the movable plate (18), the arc clamping plates (19) are rotationally connected with the movable plate (18) through torsion springs, the bottoms of the arc clamping plates (19) are matched with the limiting plates (13), and a pressing assembly (20) for driving the arc clamping plates (19) to rotate so that the limiting plates (13) are separated is arranged above the arc clamping plates (19).

7. The PCIe high speed connector of claim 6, wherein: the pressing assembly (20) comprises connecting rods (21) which are fixedly connected with the device body (1), the arc clamping plates (19) are located between the two connecting rods (21), and pressing rods (22) which are in pressing fit with the arc clamping plates (19) are fixedly connected to the end parts of the connecting rods (21).

8. The PCIe high speed connector of claim 7, wherein: the pressing assembly (20) further comprises a pressing plate (23) which is in pressing fit with the plug-in card inserted into the plug-in hole (2), a limiting rod (24) inserted into the device body (1) is fixedly connected to the pressing plate (23), the limiting rod (24) is fixedly connected with the movable plate (18), and a pressure spring (25) is connected between the pressing plate (23) and the pressing rod (22) in a hanging fit mode.

9. The PCIe high speed connector of claim 6, wherein: the bottom of the arc clamping plate (19) is L-shaped.

10. The PCIe high speed connector of claim 8, wherein: the top surface of the pressing plate (23) is adhered with a protective layer which is in pressing fit with the bottom of the plug-in card.

11. The PCIe high speed connector of claim 7, wherein: the connecting rods (21) are of U-shaped structures, and the distance between the two connecting rods (21) is larger than the sum of the moving distances of the two arc clamping plates (19).