High-speed small card edge connector and electronic equipment

Abstract

The utility model discloses a high-speed small-sized card edge connector and electronic equipment, and relates to the technical field of connectors, and the high-speed small-sized card edge connector comprises a housing; the connecting seat is arranged in the shell, at least two differential signal pairs and at least one grounding terminal are arranged on the connecting seat at intervals, and one grounding terminal is arranged between every two adjacent differential signal pairs; and the first shielding sheet is arranged on one side of the shell and is not in contact with the grounding terminal, and the first shielding sheet is arranged corresponding to the grounding terminal so as to absorb energy between the two adjacent differential signal pairs. According to the technical scheme provided by the utility model, radiation energy between differential signal pairs is absorbed, indirect crosstalk caused by radiation is reduced, the isolation degree of signals is improved, the loss is reduced, the transmission quality and integrity of the signals are further improved, and the transmission rate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a high-speed small card edge connector and electronic equipment. Background Art

[0002] PCIe is a high-speed point-to-point serial computer expansion bus standard that provides higher data transfer rates and better performance. With the development of technology, the PCIe standard has undergone multiple versions of iterations. Starting from the initial PCIe1.0, the transmission rate has gradually increased from 2.5bps to 16Gbps in PCIe4.0, and PCIe5.0 has reached 32Gbps. The connector is the physical interface between PCIe devices. The design and material selection directly affect the attenuation and distortion of the signal during transmission. High-speed signals will encounter insertion loss, reflection loss, and crosstalk when passing through the connector, which will cause signal amplitude attenuation and phase distortion, thereby reducing the signal-to-noise ratio and increasing the bit error rate. Especially under high-bandwidth standards such as PCIe4.0 and 5.0, even a small loss will cause a significant decrease in signal quality, limiting the actual transmission rate that the PCIe interface can achieve. Utility Model Content

[0003] The main purpose of the utility model is to provide a high-speed small card edge connector and electronic equipment, aiming to reduce the loss of the connector to meet the high-speed transmission.

[0004] To achieve the above-mentioned purpose, the high-speed small card edge connector proposed by the utility model comprises:

[0005] shell;

[0006] A connection base, the connection base is arranged inside the housing, at least two differential signal pairs and at least one ground terminal are arranged at intervals on the connection base, and a ground terminal is provided between two adjacent differential signal pairs;

[0007] The first shielding piece is arranged at one side of the housing and is not in contact with the grounding terminal. The first shielding piece is arranged corresponding to the grounding terminal to absorb energy between two adjacent differential signal pairs.

[0008] In one embodiment, a plurality of the first shielding sheets are provided and are spaced apart along the arrangement direction of the ground terminals. An empty slot is provided between two adjacent first shielding sheets, and the empty slot corresponds to the differential signal pair.

[0009] In one embodiment, a distance between an end portion of the first shielding sheet and the ground terminal is greater than a distance between a middle portion of the first shielding sheet and the ground terminal.

[0010] In one embodiment, the connector further includes a second shielding sheet, which is disposed inside the connection seat and connected to each of the grounding terminals so that the plurality of grounding terminals are connected as a whole.

[0011] In one embodiment, the second shielding sheet extends along the length direction of the connecting seat, and a plurality of connectors are protruding from the shielding sheet toward the side of the grounding terminal. The grounding terminal is protruding from the shielding sheet toward the side of the shielding sheet with a connecting portion, and each connecting portion abuts against a corresponding connector.

[0012] In one embodiment, at least one slot is disposed on both sides of the connection base, and at least one elastic member is disposed on both sides of the housing. The elastic member is bent toward the connection base and is engaged with the slot.

[0013] In one embodiment, support portions are respectively disposed at upper and lower ends of one side of the housing where the ground terminal is disposed, and the support portions are bent toward the connection seat.

[0014] In one embodiment, a plurality of terminal structures are spaced apart on a side of the housing away from the ground terminal, and the connection seat further comprises a slot, into which the terminal structure, the ground terminal and the differential signal pair extend upward.

[0015] In one embodiment, the terminal structure, the ground terminal and the differential signal pair protrude downward from the connection base for connection to a circuit board.

[0016] The utility model also provides an electronic device, comprising the high-speed small card edge connector as described in any one of the above items.

[0017] In the technical solution of the utility model, the connector includes a connecting seat, an outer shell and a first shielding plate. A grounding terminal and a differential signal pair are arranged at intervals on one side of the length direction of the connector, and the grounding terminal is arranged between two adjacent differential signal pairs. By setting the outer shell outside the connecting seat to a metal material, a conductive barrier is formed to absorb and redistribute the radiation energy between the differential signal pairs, thereby reducing the indirect crosstalk caused by radiation, improving the isolation of the signal, reducing the resonance effect at a specific frequency, reducing the loss, further improving the transmission quality and integrity of the signal, and increasing the transmission rate. In addition, at least one first shielding plate is arranged on one side of the outer shell. The first shielding plate is arranged corresponding to the grounding terminal and does not contact the grounding terminal, that is, it is located between the two differential signal pairs, and is used to absorb the radiation between the two differential signal pairs, thereby further improving the shielding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 A schematic structural diagram of an embodiment of a high-speed small card edge connector provided by the utility model;

[0020] Figure 2 A schematic structural diagram of another embodiment of a high-speed small card edge connector provided by the utility model;

[0021] Figure 3 A schematic diagram of the structure of a connecting seat in a high-speed small card edge connector provided by the utility model;

[0022] Figure 4 A schematic diagram of the structure of a housing in a high-speed small card edge connector provided by the utility model;

[0023] Figure 5 A schematic front view of a high-speed small card edge connector provided by the utility model;

[0024] Figure 6 for Figure 5 Schematic diagram of the cross-section structure along the AA direction;

[0025] Figure 7 for Figure 6 A partial enlarged view of the middle A;

[0026] Figure 8 for Figure 5 Schematic diagram of the cross-sectional structure along the BB direction;

[0027] Fig. 9 The present invention is a schematic structural diagram of a second shielding sheet in a high-speed small card edge connector provided by the present invention.

[0028] Description of Figure Numbers:

[0029] 100, connecting seat; 110, card slot; 120, receiving slot; 130, slot;

[0030] 200, housing; 210, first shielding sheet; 211, empty slot; 220, elastic member; 230, first mounting surface; 240, second mounting surface; 241, first side edge; 242, second side edge; 243, supporting portion; 250, third mounting surface;

[0031] 300, second shielding sheet; 310, connecting member;

[0032] 400, terminal structure;

[0033] 500, circuit board;

[0034] 600, ground terminal; 610, connection portion;

[0035] 700. Differential signal pair.

[0036] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0040] PCIe is a high-speed point-to-point serial computer expansion bus standard that provides higher data transfer rates and better performance. With the development of technology, the PCIe standard has undergone multiple versions of iterations. Starting from the initial PCIe1.0, the transmission rate has gradually increased from 2.5bps to 16Gbps in PCIe4.0, and PCIe5.0 has reached 32Gbps. The connector is the physical interface between PCIe devices. The design and material selection directly affect the attenuation and distortion of the signal during transmission. High-speed signals will encounter insertion loss, reflection loss, and crosstalk when passing through the connector, which will cause signal amplitude attenuation and phase distortion, thereby reducing the signal-to-noise ratio and increasing the bit error rate. Especially under high-bandwidth standards such as PCIe4.0 and 5.0, even a small loss will cause a significant decrease in signal quality, limiting the actual transmission rate that the PCIe interface can achieve.

[0041] See also Figure 1 , Figure 2 and Figure 4 In one embodiment of the utility model, the high-speed small card edge connector comprises:

[0042] Housing 200;

[0043] A connection base 100, which is disposed inside the housing 200, and has at least two differential signal pairs 700 and at least one ground terminal 600 disposed thereon, with a ground terminal 600 disposed between two adjacent differential signal pairs 700;

[0044] The first shielding piece 210 is disposed at one side of the housing 200 and is not in contact with the ground terminal 600 . The first shielding piece 210 is disposed corresponding to the ground terminal 600 to absorb energy between two adjacent differential signal pairs 700 .

[0045] In the technical solution of the utility model, the connector includes a connecting seat 100, a shell 200 and a first shielding piece 210. A grounding terminal 600 and a differential signal pair 700 are arranged at intervals on one side of the length direction of the connector, and the grounding terminal 600 is arranged between two adjacent differential signal pairs 700. By setting the shell 200 outside the connecting seat 100 to a metal material, a conductive barrier is formed to absorb and redistribute the radiation energy between the differential signal pairs 700, thereby reducing the indirect crosstalk caused by radiation, improving the isolation of the signal, reducing the resonance effect at a specific frequency, reducing the loss, further improving the transmission quality and integrity of the signal, and increasing the transmission rate. In addition, at least one first shielding piece 210 is arranged on one side of the shell 200. The first shielding piece 210 is arranged corresponding to the grounding terminal 600 and does not contact the grounding terminal 600, that is, it is located between the two differential signal pairs 700, and is used to absorb the radiation between the two differential signal pairs 700, thereby further improving the shielding effect.

[0046] Please refer to Figure 3 The connection base 100 is made of insulating material. On one side in the length direction, a plurality of receiving grooves 120 are arranged at intervals. The arrangement direction of the receiving grooves 120 is the length direction of the connection base 100. The grounding terminal 600 and the differential signal pair 700 are respectively arranged in one receiving groove 120. The differential signal pair 700 includes two signal terminals arranged at intervals, that is, the two signal terminals constitute a group of differential signal pairs 700, and a grounding terminal 600 is arranged between each group of differential signal pairs 700; the housing 200 includes a first mounting surface 230 arranged on the upper part of the connection base 100 and a second mounting surface 240 arranged on one side in the length direction of the connection base 100. The first mounting surface 230 is connected to one side of the second mounting surface 240 in the length direction, and the second mounting surface 240 is close to the grounding terminal 600. The first shielding sheet 210 is arranged on the second mounting surface 240. The first shielding sheet 210 and the first mounting surface 230 cooperate to absorb the radiation between the two differential signal pairs 700, reduce interference and resonance, reduce loss, and improve the signal transmission rate.

[0047] In addition, the housing 200 should be made of a metal material with good conductivity and mechanical strength, preferably copper, aluminum or stainless steel, to ensure effective electromagnetic shielding and long-term durability. The shape and thickness of the housing 200 are related to the distance between the ground terminal 600 and the differential signal pair 700 and the layout spacing between the two signal terminals. The shape and thickness of the housing 200 are not limited here.

[0048] In the embodiment of the present invention, a plurality of first shielding sheets 210 are provided and are spaced apart along the arrangement direction of the ground terminals 600 . An empty slot 211 is provided between two adjacent first shielding sheets 210 , and the empty slot 211 corresponds to the differential signal pair 700 .

[0049] Please refer to Figure 1 and Figure 4 On the second mounting surface 240 , the first shielding sheet 210 corresponds to the ground terminal 600 to absorb the radiation between the two differential signal pairs 700 , and the empty slot 211 between two adjacent first shielding sheets 210 corresponds to the differential signal pair 700 to reduce the signal oscillation between the two signal terminals.

[0050] In the embodiment of the present invention, the distance between the end of the first shielding piece 210 and the ground terminal 600 is greater than the distance between the middle of the first shielding piece 210 and the ground terminal 600 .

[0051] Please refer to Figure 6The second mounting surface 240 has a first side 241 and a second side 242 opposite to each other. The first side 241 is arranged close to the first mounting surface 230, and the second side 242 is far away from the first mounting surface 230. The two ends of the first shielding piece 210 are respectively connected to the first side 241 and the second side 242. Since the radiation middle section between two adjacent differential signal pairs 700 is the largest, the distance between the connection between the first shielding piece 210 and the first side 241 and the second side 242 and the grounding terminal 600 is set to be greater than the distance between the middle section and the grounding terminal 600, so that the middle section of the first shielding piece 210 can better absorb radiation. Since the first side 241 and the second side 242 are continuously and non-interruptedly arranged, the first side 241 and the second side 242 are far away from the grounding terminal 600, which can not only avoid short circuit caused by contact with the differential signal pair 700, but also reduce oscillation between the two signal terminals.

[0052] In the embodiment of the present invention, the connector further comprises a second shielding sheet 300 , which is disposed inside the connection base 100 and connected to each grounding terminal 600 so that the plurality of grounding terminals 600 are connected as a whole.

[0053] Please refer to Figure 6 and Figure 7 A second shielding sheet 300 is arranged inside the connector. The second shielding sheet 300 is arranged along the length direction of the connecting base 100 and is connected to the grounding terminal 600, so that each grounding terminal 600 is connected in series and cooperates with the shell 200 to form a loop as a whole, which not only improves the shielding effect but also avoids the generation of new interference sources.

[0054] In addition, the bottom of the second shielding sheet 300 is connected to the connection seat 100 by interference fit, or is connected to the connection seat 100 by hot melting, so as to provide a retaining force, so that the connection is more stable.

[0055] In an embodiment of the utility model, the second shielding sheet 300 extends along the length direction of the connecting seat 100, and a plurality of connecting members 310 are protrudingly provided on one side of the shielding sheet toward the grounding terminal 600, and a connecting portion 610 is protrudingly provided on one side of the grounding terminal 600 toward the shielding sheet, and each connecting portion 610 is correspondingly abutted against a connecting member 310.

[0056] Please refer to Figure 7 and Fig. 9 A plurality of connectors 310 are arranged at intervals on the second shielding sheet 300 along the arrangement direction of the grounding terminal 600. The connectors 310 are arranged as spring sheets protruding toward the grounding terminal 600, and abut against a connecting portion 610 protruding toward the second shielding sheet 300 on the grounding terminal 600, so that the second shielding sheet 300 is connected to the grounding terminal 600, that is, one second shielding sheet 300 connects a plurality of grounding terminals 600 into a whole, thereby improving the shielding effect.

[0057] In an embodiment of the utility model, at least one slot 110 is provided on both sides of the connection base 100 , and at least one elastic member 220 is provided on both sides of the housing 200 . The elastic member 220 is bent toward the connection base 100 and is engaged with the slot 110 .

[0058] Please refer to Figures 1 to 4 The shell 200 also includes a third mounting surface 250 opposite to the second mounting surface 240. An elastic member 220 that bends inward and protrudes is respectively provided on the second mounting surface 240 and the third mounting surface 250. A card slot 110 is respectively provided on both sides of the connecting seat 100. The elastic member 220 is snapped into the card slot 110, which can better restrain the shell 200 and prevent the shell 200 from detaching upward from the connecting seat 100.

[0059] In the embodiment of the present invention, the housing 200 is provided with a ground terminal 600 and the upper and lower ends thereof are respectively provided with support portions 243 , and the support portion 243 is bent toward the connection socket 100 .

[0060] Please refer to Figure 4 , Figure 6 and Figure 8 The first side 241 and the second side 242 are both provided with a support portion 243 bent toward the connecting seat 100, and the support portion 243 on the first side 241 is located in the empty groove 211, and the support portion 243 on the second side 242 corresponds to the first shielding sheet 210. By pressing the support portion 243, the shell 200 is tilted, that is, the support portion 243 abuts against the connecting seat 100, further constraining the connection between the shell 200 and the connecting seat 100.

[0061] In the embodiment of the present invention, a plurality of terminal structures 400 are spaced apart on one side of the housing 200 away from the ground terminal 600 . The connection socket 100 further includes a slot 130 . The terminal structure 400 , the ground terminal 600 and the differential signal pair 700 all extend upward into the slot 130 .

[0062] Please refer to Figure 2 and Figure 8 A plurality of receiving holes are arranged at intervals on the third mounting surface 250 along the arrangement direction of the grounding terminal 600, and a terminal structure 400 is correspondingly arranged in each receiving hole. The slot 130 is arranged above the connecting seat 100, and the receiving hole and the receiving groove 120 are upwardly connected to the slot 130. The terminal structure 400, the differential signal pair 700 and the grounding terminal 600 are upwardly inserted into the slot 130. When some electronic products for data signal transmission are inserted into the slot 130, the interface is in contact with the terminal structure 400, the differential signal pair 700 and the grounding terminal 600, thereby realizing signal conduction.

[0063] Specifically, the upper and lower end surfaces of the slot 130 include parallel horizontal end surfaces and parallel inclined end surfaces to allow the electronic product to be inserted horizontally or obliquely into the connection terminal structure 400 , the differential signal pair 700 , and the ground terminal 600 .

[0064] In the embodiments of the present invention, please refer to Figure 1 and Figure 2 The terminal structure 400, the ground terminal 600 and the differential signal pair 700 protrude downward from the connecting seat 100 for connecting the circuit board 500; the terminal structure 400, the ground terminal 600 and the differential signal pair 700 are connected to the circuit board 500 downward and to other electronic products upward, and the signal path is conductive, which facilitates the transmission of the signal. The setting of the housing 200, the first shielding plate 210 and the second shielding plate 300 reduces the loss and improves the transmission rate.

[0065] The utility model also proposes an electronic device, including a high-speed small card edge connector as any of the above items. The specific structure of the high-speed small card edge connector refers to the above embodiments. Since the electronic device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0066] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A high-speed small card edge connector, characterized in that: include: shell; A connection base, the connection base is arranged inside the housing, at least two differential signal pairs and at least one ground terminal are arranged at intervals on the connection base, and a ground terminal is provided between two adjacent differential signal pairs; The first shielding piece is arranged at one side of the housing and is not in contact with the grounding terminal. The first shielding piece is arranged corresponding to the grounding terminal to absorb energy between two adjacent differential signal pairs.

2. The high speed small card edge connector according to claim 1, wherein: A plurality of the first shielding sheets are provided and are spaced apart along the arrangement direction of the grounding terminals. An empty slot is provided between two adjacent first shielding sheets, and the empty slot corresponds to the differential signal pair.

3. The high speed small card edge connector according to claim 1, wherein: The distance between the end of the first shielding piece and the grounding terminal is greater than the distance between the middle of the first shielding piece and the grounding terminal.

4. The high speed small card edge connector according to claim 2, wherein: The connector further comprises a second shielding sheet, which is arranged inside the connection seat and connected to each of the grounding terminals so that the plurality of grounding terminals are connected as a whole.

5. The high speed miniature card edge connector according to claim 4, wherein: The second shielding sheet extends along the length direction of the connection seat, and a plurality of connectors are protruding from one side of the shielding sheet toward the grounding terminal. A connecting portion is protruding from one side of the grounding terminal toward the shielding sheet, and each connecting portion abuts against a corresponding connector.

6. The high speed small card edge connector according to claim 1, wherein: At least one clamping slot is respectively disposed on two sides of the connection base, and at least one elastic member is respectively disposed on two sides of the housing. The elastic member is bent toward the connection base and clamped with the clamping slot.

7. The high speed miniature card edge connector according to claim 1, wherein: Support parts are respectively arranged at the upper and lower ends of one side of the housing where the ground terminal is arranged, and the support parts are bent toward the connecting seat.

8. The high speed miniature card edge connector according to claim 6, wherein: A plurality of terminal structures are arranged at intervals on one side of the housing away from the ground terminal. The connection seat also includes a slot, and the terminal structure, the ground terminal and the differential signal pair all extend upward into the slot.

9. The high speed miniature card edge connector according to claim 8, wherein: The terminal structure, the ground terminal and the differential signal pair protrude downward from the connecting seat for connecting to a circuit board.

10. An electronic device, characterized in that: The invention comprises a high speed small card edge connector as claimed in any one of claims 1 to 9.

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