WO2021036688A1 - 一种线路板组件、背板互连系统及电子设备 - Google Patents

一种线路板组件、背板互连系统及电子设备 Download PDF

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Publication number
WO2021036688A1
WO2021036688A1 PCT/CN2020/106487 CN2020106487W WO2021036688A1 WO 2021036688 A1 WO2021036688 A1 WO 2021036688A1 CN 2020106487 W CN2020106487 W CN 2020106487W WO 2021036688 A1 WO2021036688 A1 WO 2021036688A1
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WO
WIPO (PCT)
Prior art keywords
circuit board
sub
connector
front sub
board
Prior art date
Application number
PCT/CN2020/106487
Other languages
English (en)
French (fr)
Inventor
徐华华
龚心虎
唐银中
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2021036688A1 publication Critical patent/WO2021036688A1/zh
Priority to US17/680,659 priority Critical patent/US20220181810A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/721—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures cooperating directly with the edge of the rigid printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1438—Back panels or connecting means therefor; Terminals; Coding means to avoid wrong insertion
    • H05K7/1439—Back panel mother boards
    • H05K7/1441—Back panel mother boards with a segmented structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • H01R13/6315—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only allowing relative movement between coupling parts, e.g. floating connection
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1438—Back panels or connecting means therefor; Terminals; Coding means to avoid wrong insertion
    • H05K7/1452—Mounting of connectors; Switching; Reinforcing of back panels
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/18—Construction of rack or frame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/73—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
    • H01R12/735—Printed circuits including an angle between each other
    • H01R12/737—Printed circuits being substantially perpendicular to each other

Definitions

  • This application relates to the technical field of electronic products, in particular to a circuit board assembly, a backplane interconnection system and electronic equipment.
  • the circuit system requires a more direct and efficient interconnection method to transmit high-speed signals.
  • the direct connection between the daughter card and the motherboard has continuously emerged.
  • the circuit system includes the motherboard 001, the rear terminal card 005 and the front terminal card.
  • the motherboard 001 has a front terminal card connector 002 and a rear terminal card connector 003
  • the front terminal card 004 has a first port 006 that is plugged into the front terminal card connector 002 on the motherboard 001
  • the rear terminal card 005 has a second port 007 that is plugged into the rear terminal card connector 003 on the motherboard 001, wherein the motherboard 001 and the front terminal card 004 are orthogonally connected.
  • the motherboard 001 is first fixed in the chassis or on other modules, and then the first port 006 of the front terminal card 004 is plugged into the front terminal card connector 002 corresponding to the first port 006.
  • the first port 006 on the front terminal card 004 may have tolerances during processing, and the front terminal card connector 002 of the corresponding motherboard 001 is due to the board thickness tolerance of the motherboard and the pressure of the front terminal card connector 002.
  • Connection tolerances, the height tolerance of the front terminal card connector 002, the deformation of the motherboard 001 itself, and the positioning tolerances generated during the fixed installation of the motherboard 001 may cause the tolerance of the first port 006 to be mismatched with the tolerance of the front terminal card connector 002 , Which eventually causes the front terminal card 004 to fail to plug in with the motherboard 001.
  • the prior art uses the solution shown in FIG. 2 to compensate for the tolerance of the first port 006, that is, metal springs 008 are provided on both sides of the front terminal card 004 along the height direction H.
  • the metal springs 008 are in an arched structure and pass through the metal
  • the deformation of the elastic piece 008 in the height direction H absorbs the tolerance in the height direction.
  • the technical problem of this solution is that the metal dome 008 has a limited ability to absorb tolerances, generally less than ⁇ 0.5mm, and sometimes it is still impossible to insert the front terminal card 004 and the motherboard 001. If it is necessary to increase the ability of the metal dome 008 to absorb tolerances , The size of the metal dome 008 needs to be increased.
  • the ability of the metal dome 008 to absorb tolerances is improved, it is still limited, and the size of the entire front terminal card 004 in the height direction will increase due to the increase of the metal dome 008. Furthermore, the space occupied by the front terminal card 004 is increased, and the layout density of the front terminal card 004 is reduced.
  • the embodiments of the present application provide a circuit board assembly, a backplane interconnection system, and an electronic device.
  • the main purpose is to form a free part with a swing amount on the circuit board under the premise of ensuring the layout density of the front sub-circuit board.
  • the first connector installed on the free part is plugged into the first plug-in end on the front sub-circuit board.
  • circuit board components including:
  • a circuit board the circuit board is formed with a fixed part and a free part, the fixed part is connected to the bracket, the free part is suspended, and the plane where the free part and the fixed part coexist is a first plane, the
  • the free part has a swing amount along a first direction, the first direction is perpendicular to the first plane, the circuit board is used for plugging with the front sub-circuit board, and the free part is provided with the front sub-circuit
  • the first connector is inserted into the first insertion end on the board, and the swing amount enables the first connector to be inserted into the first insertion end.
  • the circuit board since the circuit board is formed with a fixed part and a free part, the fixed part is installed on the bracket, the free part is suspended, and the first connector is arranged on the free part. There is an amount of swing in the direction perpendicular to the plane, so that the first connector also has an amount of swing in the direction perpendicular to the first plane, and the amount of swing allows the first connector to be plugged into the first plug-in end to achieve Insertion of the first sub-circuit board and the circuit board.
  • the connection structure of the circuit board and the bracket forms a cantilever beam structure, which is partially fixed and partially suspended.
  • the free part has a larger swing amount, so that the circuit board has a larger compensation for the tolerance of the first plug-in end
  • the ability of the front sub-circuit board does not need to be provided with any structure to increase the tolerance, which ensures that the size of the front sub-circuit board does not change, thereby ensuring the layout density of the front sub-circuit board.
  • the fixing portion is formed at a first end of the circuit board, the free portion is formed at a second end of the circuit board, and the first end and the second end are Opposite.
  • the connection method of the front sub-circuit board and one end of the circuit board is mostly adopted, so the circuit board is fixed at one end and the other end is suspended to meet the common installation requirements of the front sub-circuit board and the circuit board.
  • the free portion is provided with a plurality of the first connectors arranged at intervals along the outer edge of the free portion, and the circuit board is located in two adjacent sockets. There is a slot between the first connectors.
  • multiple front sub-circuit boards need to be plugged into corresponding multiple first connectors, and the tolerance of the first plug-in ends of two adjacent front sub-circuit boards may be It is not the same, and the swing amount of the two adjacent first connectors is different.
  • the first plug-in end of one of the front sub-circuit boards is plugged into the first connector, it will affect the other front sub-circuit board and the first connector.
  • the insertion of the first connector even causes the entire circuit board to be distorted.
  • the slotted arrangement can ensure that each first connector is inserted into the front sub-circuit board without affecting the first side of the circuit board. The mating of the connector.
  • the slot is opened on the outer edge of the circuit board, and the slot is a through slot along the thickness direction of the circuit board.
  • the slot is arranged on the edge of the circuit board and is a through slot, so that the circuit board where any first connector is located becomes an independent structure, which further increases the ability of each first connector to absorb tolerances. The ability of the adjacent two first connectors to absorb tolerances is greatly different.
  • the circuit board is connected to the bracket through a fixing member, a first positioning structure is provided at a position where the fixing member and the bracket cooperate, and/or the fixing member A second positioning structure is provided at a position matching the circuit board, and the first positioning structure is used to prevent the circuit board and the fixing member from moving relative to the bracket in a direction perpendicular to the circuit board, The second positioning structure is used to prevent the circuit board from moving in a direction parallel to the circuit board relative to the fixing member.
  • the second positioning structure By providing the first positioning structure, it is ensured that the second sub-circuit board plugged into the circuit board can be accurately mated with the circuit board, and the second positioning structure is provided to ensure that the first sub-circuit board can be accurately mated with the circuit board. Avoid the phenomenon that the plug is not tight or cannot be plugged.
  • the first positioning structure includes a first positioning post provided on the fixing member and a first positioning hole opened on the bracket, and a shaft of the first positioning post Parallel to the circuit board
  • the second positioning structure includes a second positioning post provided on the fixing member and a second positioning hole opened on the circuit board, the axial direction of the second positioning post Perpendicular to the circuit board.
  • the fixing member includes a first fixing plate and a second fixing plate, the first fixing plate and the second fixing plate are connected in an L-shaped structure, and the first fixing plate
  • the first connecting piece is detachably connected to the bracket
  • the second fixing plate is detachably connected to the circuit board through the second connecting piece.
  • the fixing member is formed by the first fixing plate and the second fixing plate, the structure is simple, and the corresponding first fixing plate and the second fixing plate are detachably connected by using the first connecting member and the second connecting member, and the operation is simple.
  • the fixing member further includes a reinforcing plate, and the reinforcing plate is arranged between the first fixing plate and the second fixing plate. The strength of the connection between the fixing member and the bracket and the circuit board is improved by the reinforcing plate.
  • the present application also provides a backplane interconnection system, including: a circuit board assembly and a front sub-circuit board, where the circuit board assembly is the circuit in the first aspect or any implementation of the first aspect.
  • the board assembly, the front sub-circuit board has a first plug-in end, and the first plug-in end is plugged into the first connector.
  • the circuit board in the circuit board assembly forms a fixed part and a free part, and
  • the fixed part is fixedly installed on the bracket, the free part is suspended to form a cantilever beam structure, and the first connector connected to the front sub-circuit board is arranged at the free part, and the swing amount of the first connector and the free part can be compensated for its insertion
  • the tolerance of the first plug-in end of the connection in this way, the effective plug-in of the front sub-circuit board and the circuit board can be realized.
  • the circuit board is fixed with a cantilever beam structure, and no structure with increased tolerance is provided on the front sub-circuit board, so that the structure of the front sub-circuit board will not be complicated due to the increased structure. , To ensure the layout density of the front sub-circuit board.
  • the circuit board includes a first circuit board and a second circuit board that are laminated and laid out, and both the first circuit board and the second circuit board are provided with the first connection
  • the front sub-circuit board includes a first front sub-circuit board, the first circuit board and the second circuit board are both connected to the first front sub-circuit board, and the first front sub-circuit board
  • the first plug-in end is provided at a position relative to the first connector of the first circuit board, and the position of the first front sub-circuit board relative to the first connector of the second circuit board Where the first plug-in end is arranged.
  • the first front sub-circuit board has the first plug-in terminals that are respectively plugged into the first circuit board and the second circuit board.
  • the prior art there is no need to Two sub-circuit boards plugged into the corresponding first circuit board and the second circuit board are provided.
  • the boards have free parts, and even if there is a tolerance between the two first plug-in ends of the first front sub-circuit board, they can be plugged into the first circuit board and the second circuit board at the same time.
  • the front sub-circuit board further includes a second front sub-circuit board laminated with the first front sub-circuit board, the first circuit board and the second circuit board
  • the direction of stacking arrangement is perpendicular to the direction of stacking arrangement of the first front sub-circuit board and the second front sub-circuit board, and both the first circuit board and the second circuit board are connected to the second front sub-circuit board.
  • Board connection the first circuit board has a slot between the two first connectors for connecting the first front sub-circuit board and the second front sub-circuit board, and the second circuit A slot is provided between the two first connectors of the board for connecting the first front sub-circuit board and the second front sub-circuit board.
  • the first circuit board and the second circuit board On the basis of realizing the interconnection and intercommunication of the first circuit board and the second circuit board with the first front sub-circuit board and the second front sub-circuit board, since the first circuit board is located between two adjacent first connectors, there is Slotting, so that the insertion of the first front sub-circuit board and the first circuit board will not affect the insertion of the second front sub-circuit board and the first circuit board, and avoid the distortion of the entire first circuit board. Therefore, since the second circuit board has a slot between two adjacent first connectors, the insertion of the first front sub-circuit board and the second circuit board will not affect the second front sub-circuit board and the second circuit board. The insertion of the second circuit board can avoid the distortion of the entire second circuit board.
  • the second aspect further includes a rear sub-circuit board.
  • the rear sub-circuit board includes a first rear sub-circuit board and a second rear sub-circuit board that are stacked and laid out.
  • the first rear sub-circuit board and The stacking direction of the second rear sub-circuit board is parallel to the stacking direction of the first circuit board and the second circuit board, and the first rear sub-circuit board is connected to the first circuit board, so
  • the second rear sub-circuit board is connected to the second circuit board, and the fixing portion of the first circuit board and the fixing portion of the second circuit board are provided with the first rear sub-circuit A second connector corresponding to the second rear sub-circuit board connected to the board.
  • the interconnection between the first circuit board and the first rear sub-circuit board and the interconnection between the second circuit board and the second rear sub-circuit board are realized Intercommunication, and the second connector is arranged on the fixing part. Because the fixing part has a certain rigidity, the connection strength between the first rear sub-circuit board and the first circuit board is guaranteed, and the second rear circuit board and the second circuit board are guaranteed. The connection strength.
  • a middle connector is further included, and the middle connector is used to interconnect the first rear sub-circuit board and the second rear sub-circuit board.
  • the middle connector is used to realize the interconnection and intercommunication between the first rear sub-circuit board and the second rear sub-circuit board.
  • the central connector is also used to interconnect the first circuit board and the second circuit board. Using a central connector to realize the interconnection and intercommunication of the first circuit board and the second circuit board, and then realize the interconnection and intercommunication of the first circuit board and the second circuit board, the first rear sub-circuit board and the second rear sub-circuit board .
  • the center-mounted connector includes a center-mounted single board, and the center-mounted single board is arranged between the first circuit board and the first rear sub-circuit board, or Between the second circuit board and the second rear sub-circuit board, a side of the center-mounted single board facing the first rear sub-circuit board and the second rear sub-circuit board is provided with The second port to which the first rear sub-circuit board and the second rear sub-circuit board are connected correspondingly, and a side of the center-mounted single board facing the first circuit board and the second circuit board is set There is a first port corresponding to the first circuit board and the second circuit board.
  • the center-mounted single board is used as the center-mounted connector, which has a simple structure and is convenient to implement.
  • a side of the first circuit board and the second circuit board close to the center-mounted single board is provided with an escape groove, and the center-mounted single board is arranged at the escape slot. ⁇ In the slot.
  • the center-mounted single board is embedded in the avoidance slot to reduce the space occupied by the entire backplane interconnection system, so that the entire backplane interconnection system is more compact.
  • the center-mounted single board is a flexible circuit board.
  • the central connector includes a connecting wire or a black box.
  • the present application also provides an electronic device, including: a chassis and a backplane interconnection system, the backplane interconnection system is provided in the chassis, and the backplane interconnection system is the second aspect described above Or the backplane interconnection system in any implementation manner of the second aspect.
  • the backplane interconnection system adopts the backplane interconnection system described in any one of the implementation manners of the second aspect, the electronic equipment provided in the embodiments of the present application is compatible with any one of the above technical solutions.
  • the backplane interconnection system can solve the same technical problem and achieve the same expected effect.
  • Fig. 1 is a schematic structural diagram of a backplane interconnection system in the prior art
  • Fig. 2 is a schematic structural diagram of a front terminal card in the prior art
  • FIG. 3 is a schematic diagram of the structure of a rear terminal card in the prior art
  • FIG. 4 is an exploded schematic diagram of the circuit board and the fixing member in the circuit board assembly according to the embodiment of the application;
  • FIG. 5 is a schematic diagram of the connection relationship between the circuit board and the fixing member in the circuit board assembly of the embodiment of the application;
  • FIG. 6 is an exploded schematic diagram of the circuit board and the bracket in the circuit board assembly of the embodiment of the application;
  • FIG. 7 is a schematic diagram of the connection relationship between the circuit board and the bracket in the circuit board assembly of the embodiment of the application;
  • FIG. 8 is a partial schematic diagram of the circuit board and the bracket in the circuit board assembly of the embodiment of the application;
  • FIG. 9 is a schematic diagram of the connection relationship between the circuit board and the bracket in the circuit board assembly of the embodiment of the application.
  • FIG. 10 is a partial schematic diagram of a circuit board in a circuit board assembly according to an embodiment of the application.
  • FIG. 11 is a top view of a circuit board in a circuit board assembly according to an embodiment of the application.
  • Figure 12 is a cross-sectional view taken along line A-A of Figure 11;
  • FIG. 13 is a top view of a circuit board in a circuit board assembly according to an embodiment of the application.
  • Figure 14 is a B-B sectional view of Figure 13;
  • 15 is a partial schematic diagram of a circuit board in a circuit board assembly according to an embodiment of the application.
  • FIG. 16 is a schematic structural diagram of a fixing member in a circuit board assembly according to an embodiment of the application.
  • FIG. 17 is another perspective view of FIG. 16;
  • FIG. 18 is a schematic diagram of the connection relationship between the circuit board, the rear sub-circuit board and the center connector in the backplane interconnection system according to the embodiment of the application;
  • Figure 19 is another perspective view of Figure 18;
  • 20 is a schematic diagram of the structure of a single board in an embodiment of the application.
  • FIG. 21 is another perspective view of FIG. 20;
  • FIG. 22 is a schematic diagram of the structure of the sub-circuit board before the embodiment of the application.
  • FIG. 23 is a schematic structural diagram of a backplane interconnection system according to an embodiment of the application.
  • circuit board components backplane interconnection systems
  • electronic equipment The embodiments of the present application relate to circuit board components, backplane interconnection systems, and electronic equipment.
  • circuit board components, backplane interconnection systems, and electronic equipment will be described in detail below with reference to the accompanying drawings.
  • the circuit board assembly includes a bracket 1 and a circuit board 2.
  • the circuit board 2 is formed with a fixed portion 201 and a free portion 202, and the fixed portion 201 and The bracket 1 is connected, the free portion 202 is suspended, the surface where the free portion 202 and the fixed portion 201 coexist is the first plane, and the free portion 202 has a swing amount along the first direction, and the first direction is perpendicular to the first plane.
  • the circuit board 2 is used to plug in the front sub-circuit board 3, the plugging direction of the front sub-circuit board 3 (the S2 direction shown in Figure 23) is perpendicular to the swing direction of the free part 202 (the S1 direction shown in Figure 23) ,
  • the free portion 202 is provided with a first connector 203 that is plugged into the first plug end 301 on the front sub-circuit board 3, and the swing amount allows the first connector 203 to be plugged into the first plug end 301.
  • the fixed portion 201 of the circuit board 2 is mounted on the bracket 1, and the free portion 202 is suspended, so that the free portion 202 has a swing amount, and the first connector 203 is plugged into the first plug terminal 301 due to the swing amount, that is, the swing amount
  • the tolerance in the direction perpendicular to the circuit board of the first plug terminal 301 that is plugged in can be compensated, so that the first plug terminal 301 can be mated with the first connector 203. It should be noted that the tolerances involved in this application all refer to the tolerance of the first plug-in end 301 in the direction perpendicular to the first plane.
  • the swing amount of the first connector 203 when swinging upward in the first direction is the swing amount A1, then the swing amount A1 is greater than or equal to the upper deviation of the first plug-in end 301, and the first connector 203 swings downward in the first direction
  • the swing amount is the swing amount A2
  • the swing amount A2 is greater than or equal to the lower deviation of the first plug-in end 301.
  • the circuit board assembly provided by the embodiment of the present application adopts a method of fixing the circuit board 2 in the structure of a cantilever beam, so that the free portion 202 of the circuit board 2 has a larger swing amount, and thus has a larger accommodating first plug.
  • the tolerance capability of the terminal, and the circuit board assembly does not add any structure to increase the tolerance on the first sub-circuit board, so as to ensure the layout density of the first sub-circuit board, and at the same time, it also simplifies the layout of the first sub-circuit board.
  • the structure simplifies the assembly process.
  • the fixing portion 201 and the free portion 202 are formed in various positions on the circuit board 2.
  • the fixing portion 201 is formed at the first end of the circuit board 2
  • the free portion 202 is formed at the second end of the circuit board 2, and the first end is opposite to the second end; in other embodiments, referring to FIG. 9, the fixing portion 201 is formed in the middle of the circuit board 2, and the free portion 202 includes the first free portion.
  • the second free part, the first free part and the second free part are located on both sides of the fixed part 201; in other embodiments, when the circuit board 2 is a circular circuit board, the fixed part 201 is located in the middle of the circular circuit board , The free portion 202 is located at the outer edge of the circular circuit board. Therefore, the present application does not limit the positions where the fixed portion 201 and the free portion 202 are formed on the circuit board 2, and any form is within the protection scope of the present application.
  • a strip-shaped circuit board is selected for the circuit board.
  • the first end of the circuit board 2 forms a fixed part, the second end forms a free part, and the first end is opposite to the second end.
  • This structure is a common structure.
  • the circuit board 2 may need to be connected to multiple front sub-circuit boards 3 to realize the interconnection and intercommunication between the circuit board 2 and the multiple front sub-circuit boards 3. Referring to FIG. 23, it needs to be connected to the free part of the circuit board 2.
  • a plurality of first connectors 203 arranged at intervals along the outer edge of the free portion 202 are provided on 202, and the plurality of first connectors 203 are connected to the plurality of front sub-circuit boards 3 one by one, for example, the front sub-circuit board 3 It includes a first front sub-circuit board 31 and a second front sub-circuit board 32, that is, the first connector A is plugged into the first plug terminal on the first front sub-circuit board 31, and the first connector B is connected to the second front The first plug-in terminal on the sub-circuit board 32 is plugged in.
  • the tolerance of the first plug-in end on the first front sub-circuit board 31 may be different from the tolerance of the first plug-in end on the second front sub-circuit board 32.
  • the first plug-in end on the front sub-circuit board 31, the first connector B and the first plug-in end on the second front sub-circuit board 32 are plugged together, resulting in the installation of the swing amount of the first connector A and the first The amount of swing of the connector B is different, which causes the circuit board 2 to be twisted.
  • first front sub-circuit board 31 that is plugged into the first connector A If the first front sub-circuit board 31 that is plugged into the first connector A is disconnected from the first front sub-circuit board 31, it will cause the first connector B to shake , It affects the connection strength between the first connector B and the first plug-in terminal on the second front sub-circuit board 32, and even the phenomenon of detachment occurs.
  • FIG. 10 there is a slot 207 on the circuit board 2 and between two adjacent first connectors 203.
  • the swing amount of the two adjacent first connectors is different, so as to avoid the twisting of the circuit board and the unplugging of the first front sub-circuit board, causing the second front sub-circuit board on the side The phenomenon of shaking with the circuit board.
  • the slot is provided on the outer edge of the circuit board 2, and the slot is a through slot along the thickness direction of the circuit board 2; refer to Figure 13
  • the slot is provided on the outer edge of the circuit board 2, and the slot is a blind slot along the thickness direction of the circuit board 2.
  • the slot is a through slot along the thickness direction of the circuit board 2, that is, the edge of the free portion 202 is sawtooth, so that the circuit board where each first connector is located is an independent structure, which further increases each first connector.
  • the ability of the connector to absorb tolerances is greatly different from that of two adjacent first connectors; in other embodiments, the slot is far away from the outer edge of the circuit board and is a channel along the thickness of the circuit board. Groove; In other embodiments, the thickness of the portion of the circuit board located between two adjacent first connectors is less than the thickness of the portion for crimping the first connector, that is, the adjacent two first connectors
  • the circuit board between is relatively thin, so that the swing amount of two adjacent first connectors can be different, so that the accommodating capacity is different.
  • the preferred embodiment of this application is that the slot is arranged on the outer edge of the circuit board 2, and the slot is a through slot along the thickness direction of the circuit board 2.
  • the slot of this structure is not only convenient for processing and manufacturing, but also further prevents the appearance of the circuit board. Distorted phenomenon.
  • the circuit board 2 is connected to the support 1 through a fixing member 5.
  • a second positioning structure is provided at the position where the fixing member 5 and the circuit board 2 match, and the second positioning structure is used to prevent the circuit board 2
  • the relative fixing member 5 moves in a direction parallel to the circuit board 2.
  • a first positioning structure is provided at the position where the fixing member 5 and the bracket 1 match, and the first positioning structure is used for To prevent the circuit board 2 and the fixing member 5 from moving in a direction perpendicular to the circuit board 2 relative to the bracket 1.
  • the first positioning structure includes a first positioning post 71 provided on the fixing member 5 and a first positioning hole 72 (refer to FIG. 6) opened on the bracket 1.
  • the axial direction of the positioning column 71 is parallel to the circuit board 2.
  • the second positioning structure includes a second positioning column 61 provided on the fixing member 5 and a second positioning hole 62 ( 4), the axial direction of the second positioning column 61 is perpendicular to the circuit board 2.
  • the structure of the first positioning structure and the second positioning structure is simple, the manufacturing process is simple, and the assembly is also convenient.
  • the fixing member 5 includes a first fixing plate 51 and a second fixing plate 52.
  • the first fixing plate 51 and the second fixing plate 52 are connected in an L-shaped structure.
  • the fixing plate 51 is detachably connected to the bracket 1 through the first connecting member 8 (as shown in FIG. 8), and the second fixing plate 52 is detachably connected to the circuit board 2 through the second connecting member 9 (as shown in FIG. 4).
  • the fixing member 5 is formed by the first fixing plate 51 and the second fixing plate 52, the structure is simple, the manufacturing process is simple, and the first connecting member 8 and the second connecting member 9 are used to connect the corresponding first fixing plate 51 and the second fixing plate 51 to the second fixing plate 51.
  • the fixing plate 52 is detachable and easy to operate.
  • the first connecting member 8 and the second connecting member 9 can be bolts and screws.
  • the first fixing plate 51 is provided with a first mounting hole 511 through which the first connecting member 8 passes.
  • the fixing plate 52 is provided with a second mounting hole 521 for the second connecting member 9 to pass through.
  • the two second positioning posts 72 and the two second mounting holes 521 are arranged diagonally.
  • the first positioning pillar 71 is disposed between the first mounting holes 511.
  • the fixing member 5 further includes a reinforcing plate 53, which is connected to the first fixing plate 51 and the second fixing plate. Between plates 52.
  • the fixing member 5 may include multiple.
  • the width dimension X of the fixing member 5 is much smaller than the width dimension Y of the circuit board 2.
  • the free portion 202 and the second A connector 203 has a larger swing amount, so that the circuit board has a larger tolerance capability.
  • the bracket 1 includes a plurality of frames 101, the plurality of frames 101 are sequentially connected end to end to form a frame, in order to improve the strength of the frame, a support plate is provided in the frame; in addition, the bracket 1 may also have other structures, and the bracket 1 is not used here. Has a structural limitation, and any structure is within the protection scope of this application.
  • an embodiment of the present application also provides a backplane interconnection system.
  • the backplane interconnection system includes the front sub-circuit board 3 and the circuit board assembly provided in the above-mentioned embodiments.
  • the board 3 has a first plug-in end 301, the first plug-in end 301 is plugged into the first connector 203 on the circuit board 2, and the plugging direction (S2 direction) of the front sub-circuit board 3 and the swing of the free portion 202
  • the direction (S1 direction) is vertical.
  • the backplane interconnection system includes the circuit board assembly provided in the above-mentioned embodiment
  • the circuit board 2 connected to the front sub-circuit board 3 is formed with a fixed portion 201 and a free portion 202, and the first connector 203 is set in a free position with a certain amount of swing.
  • the first connector 203 also has a certain amount of swing. Due to the amount of swing, the first connector 203 is plugged into the first plug end 301, that is, the swing amount can compensate for the first plug end inserted into it.
  • the front sub-circuit board 3 is not provided with a structure that increases the tolerance such as metal shrapnel, so as to ensure the layout density of the front sub-circuit board 3.
  • the circuit board 2 includes a first circuit board 21 and a second circuit board 22 that are stacked and arranged, and a first connector 203 is provided on the first circuit board 21 and the second circuit board 22.
  • the front sub-circuit board 3 includes a first front sub-circuit board 31, the first circuit board 21 and the second circuit board 22 are both connected to the first front sub-circuit board 31, and the first front sub-circuit board 31 is opposite to the first circuit board 21
  • the first connector 203 is provided with a first plug-in end 301
  • the first front sub-circuit board 31 is provided with a first plug-in end 301 at a position opposite to the first connector 203 of the second circuit board 22. That is to say, the first front sub-circuit board 31 is connected to the first circuit board 21 and the second circuit board 22 at the same time, realizing the interconnection of the first circuit board 21, the second circuit board 22 and the first front sub-circuit board 31 Intercommunication.
  • the first circuit board 21 has a first connector P connected to the first front sub-circuit board 31, and the second circuit board 22 has a first connector Q connected to the first front sub-circuit board 31.
  • the front sub-circuit board 31 has a first plug-in terminal P that is plugged into the first connector P and a first plug-in terminal Q that is plugged into the first connector Q.
  • the first plug-in terminal P and the first plug-in terminal Q There may be a tolerance between the two plug-in terminals Q, but the swing amount of the first connector P and the first connector Q enables the first front sub-circuit board 31 to be simultaneously connected to the first circuit board 21 and the second circuit board. Insertion of board 22.
  • the backplane interconnection system provided by the embodiment of the present application also includes a third circuit board or even more circuit boards.
  • the number of circuit boards is not limited here. When the number of circuit boards is more than one ,
  • the corresponding first front sub-circuit board also has a plurality of first plug terminals that are plugged into the corresponding circuit board.
  • the front sub-circuit board 3 further includes a second front sub-circuit board 32 laminated with the first front sub-circuit board 31, and the first circuit board 21 and the second circuit board 22 are laminated and arranged
  • the direction is perpendicular to the direction in which the first front sub-circuit board 31 and the second front sub-circuit board 32 are stacked.
  • the first circuit board 21 and the second circuit board 22 are both connected to the second front sub-circuit board 32 to realize the first
  • the front sub-circuit board 31 is orthogonal to the first circuit board 21 and the second circuit board 22, and the second front sub-circuit board 32 is orthogonal to the first circuit board 21 and the second circuit board 22. In this way, the interconnection and intercommunication between the second front sub-circuit board 32 and the first circuit board 21 and the second circuit board 22 are also realized.
  • the second circuit board 22 has a first connector 203 connected to the first front sub-circuit board 31 and the second front sub-circuit board 32 respectively, and the second front sub-circuit board 32 also has a first connector 203 connected to the first circuit board 21, respectively.
  • the first circuit board 21 has a first connector P connected to the first front sub-circuit board 31, and the second circuit board 22 has a first connector Q connected to the first front sub-circuit board 31.
  • the front sub-circuit board 31 has a first plug-in end P that is plugged into the first connector P and a first plug-in end Q that is plugged into the first connector Q.
  • the first circuit board 21 has a first plug-in end P that is plugged into the first connector P.
  • the first The plug-in end P has a fit tolerance with the first connector P
  • the first plug-in end Q has a fit tolerance with the first connector Q
  • the first plug-in end M has a fit tolerance with the first connector M
  • the first plug-in end N have a matching tolerance. Specifically, when the first front sub-circuit board 31 and the second front sub-circuit board 32 are inserted, the first connector P and the first plug-in end P are not mated.
  • the backplane interconnection system also includes a third front sub-circuit board, and even more front sub-circuit boards.
  • the number of front sub-circuit boards is not limited here, and the current sub-circuit When the number of boards is multiple, the corresponding first circuit board and the second circuit board also have multiple first connectors that are plugged into the corresponding front sub-circuit boards.
  • the backplane interconnection system further includes a rear sub-circuit board 4, the rear sub-circuit board 4 includes a first rear sub-circuit board 41 and a second rear sub-circuit board 42 that are stacked and laid out.
  • the first rear sub-circuit board 41 The direction in which the second rear sub-circuit board 42 is laminated and laid is parallel to the direction in which the first circuit board 21 and the second circuit board 22 are laminated.
  • the first rear sub-circuit board 41 is connected to the first circuit board 21, and the second rear sub-circuit The board 42 is connected to the second circuit board 22. In this way, the interconnection and intercommunication between the first rear sub-circuit board 41 and the first circuit board 21 are realized, and the interconnection and intercommunication between the second rear sub-circuit board 42 and the second circuit board 22 are realized.
  • the backplane interconnection system also includes a third rear sub-circuit board, and even more rear sub-circuit boards.
  • the number of rear sub-circuit boards is not limited here, and each rear sub-circuit board is not limited.
  • the sub-circuit board is connected to the corresponding circuit board. 5, the fixing portion 201 of the first circuit board 21 and the fixing portion 201 of the second circuit board 22 are provided with second connectors corresponding to the first rear sub-circuit board 41 and the second rear sub-circuit board 42. 204.
  • the second connector 204 is arranged on the fixing part 201 to ensure that the first circuit board and the second circuit board have strong rigidity and positioning accuracy.
  • the first rear sub-circuit board 41 is provided with a second plug terminal 401 that is plugged into the second connector 204 on the first circuit board 21, and the second rear sub-circuit board 42 is also provided with a second The second plug terminal 401 to which the second connector 204 on the circuit board 22 is inserted.
  • the backplane interconnection system further includes a center connector 10, which is used for The first rear sub-circuit board 41 and the second rear sub-circuit board 42 are interconnected.
  • the central connector 10 is also used to interconnect the first circuit board 21 and the second circuit board 22.
  • the center connector 10 has multiple implementation structures.
  • the center connector 10 includes a center backplane; for another example, the center connector 10 includes a connecting wire; and for another example, the center connector 10 includes a black box.
  • the central backplane can be a flexible backplane or a rigid backplane.
  • the specific structure of the center connector 10 is not limited here, and any structure falls within the protection scope of the present application.
  • the center-mounted connector 10 includes a center-mounted single board, the center-mounted single board 10 is arranged between the first circuit board 21 and the first rear sub-circuit board 41, or is arranged between the second circuit board 22 and the second circuit board. Between the second rear sub-circuit boards 42, the side of the center-mounted single board 10 facing the first rear sub-circuit board 41 and the second rear sub-circuit board is provided with the first rear sub-circuit board 41 and the second rear sub-circuit board.
  • the second port 1002 corresponding to the connection of the board 42, the side of the center-mounted single board 10 facing the first circuit board 21 and the second circuit board 22 is provided with corresponding connections to the first circuit board 21 and the second circuit board 22
  • the center-mounted single board is used as the center-mounted connector, which is simple in structure and convenient to implement.
  • the first circuit board 21 and the second circuit board 22 are provided on the side close to the central single board.
  • the avoiding slot 205, the center-mounted single board is arranged in the avoiding slot 205.
  • an escape slot can be provided on the center-mounted single board, and the first circuit board and the second circuit board are arranged in the escape slot.
  • an embodiment of the present application also provides an electronic device that includes a chassis and a backplane interconnection system, where the backplane interconnection system is the backplane interconnection system provided in the above embodiments, and the backplane interconnection system The system is set in the chassis.
  • the circuit board adopts a cantilever beam structure, so that the circuit board has a larger tolerance capability, ensures the effective insertion of the front sub-circuit board and the circuit board, and also guarantees the connection strength of the rear sub-circuit board and the circuit board.
  • no structure for increasing the tolerance is added to the front sub-circuit board, which ensures that the structure of the front sub-circuit board is simplified, the assembly process is simple, and the layout density of the front sub-circuit board is guaranteed.

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Abstract

一种线路板组件、背板互连系统及电子设备，该线路板组件包括支架（1）和线路板（2），该线路板形成有固定部（201）和自由部（202），固定部与支架连接，自由部悬空，自由部和固定部共处的面为第一平面，自由部沿第一方向具有摆动量，第一方向与第一平面垂直，线路板用于与前子线路板（3）插接，自由部上设置有与前子线路板上的第一插接端（301）插接的第一连接器（203），摆动量可使第一连接器与第一插接端插接。该线路板组件具有较大的容纳第一插接端的容差能力，简化了子线路板的结构和装配工艺。

Description

一种线路板组件、背板互连系统及电子设备 技术领域
本申请涉及电子产品技术领域，尤其涉及一种线路板组件、背板互连系统及电子设备。
背景技术
随着电子设备信号传输效率越来越高，电路系统要求以更直接、更高效的互连方式来传输高速信号。为了满足该要求，在IT、CT领域不断涌现出子卡与母板直接连接的连接方式，参照图1、图2和图3，该电路系统包括母板001、后端子卡005和前端子卡004，母板001上具有前端子卡连接器002和后端子卡连接器003，前端子卡004上具有与母板001上的前端子卡连接器002插接的第一端口006，后端子卡005上具有与母板001上的后端子卡连接器003插接的第二端口007，其中，母板001和前端子卡004呈正交式连接。
具体实施时，母板001先固定在机箱内或者其他模块上，再将前端子卡004的第一端口006相对应的插接在前端子卡连接器002上。前端子卡004上的第一端口006在加工时可能会存在公差，而与之对应的母板001的前端子卡连接器002，由于母板的板厚公差、前端子卡连接器002的压接公差、前端子卡连接器002的高度公差、母板001自身变形以及母板001固定安装时产生的定位公差，可能会导致第一端口006的公差与前端子卡连接器002的公差不匹配，最终导致前端子卡004无法与母板001对插。
现有技术采用如图2所示的方案补偿第一端口006的公差，即在前端子卡004的沿其高度方向H的两侧设置有金属弹片008，金属弹片008呈拱形结构，通过金属弹片008在高度方向H上的变形，吸收高度方向的公差。但是该方案存在的技术问题是：金属弹片008吸收公差的能力有限，一般为±0.5mm以下，有时依然无法使前端子卡004与母板001对插，若需要增加金属弹片008吸收公差的能力，则金属弹片008的尺寸就需要增大，虽然金属弹片008吸收公差的能力提高但是依然是有限的，且会因为金属弹片008的增加造成整个前端子卡004在高度方向上的尺寸变大，进而增大前端子卡004所占据的空间，降低前端子卡004的布局密度。
发明内容
本申请的实施例提供一种线路板组件、背板互连系统及电子设备，主要目的是在保障前子线路板布局密度的前提下，通过在线路板上形成具有摆动量的自由部，以使安装在自由部的第一连接器与前子线路板上的第一插接端插接。
为达到上述目的，本申请的实施例采用如下技术方案：
第一方面，本申请提供了线路板组件，包括：
支架；
线路板，所述线路板形成有固定部和自由部，所述固定部与所述支架连接，所述自由部悬空，所述自由部和所述固定部共处的面为第一平面，所述自由部沿第一方向具有摆动量，所述第一方向与所述第一平面垂直，所述线路板用于与前子线路板插接，所述自由部上设置有与所述前子线路板上的第一插接端插接的第一连接器，所述摆动量可使所述第一连接器与所述第一插接端插接。
本申请实施例提供的线路板组件，由于线路板形成有固定部和自由部，固定部安装在支架上，自由部悬空，且第一连接器设置在自由部上，由于自由部沿与第一平面垂直的方向上具有摆动量，以使第一连接器也具有沿与第一平面垂直的方向上的摆动量，且该摆动量可使第一连接器与第一插接端插接，实现第一子线路板与线路板的插接。线路板与支架的连接结构形成悬臂梁结构，其部分固定，部分悬空，相比现有技术，该自由部具有较大的摆动量，以使线路板具有较大的补偿第一插接端的公差的能力，且无需在前子线路板上设置任何加大容差的结构，确保了前子线路板的尺寸不发生变化，进而确保了前子线路板的布局密度。
在第一方面可能的实现方式中，所述固定部形成在所述线路板的第一端，所述自由部形成在所述线路板的第二端，所述第一端和所述第二端相对。具体实施时，多采用前子线路板与线路板一端的连接方式，所以线路板采用一端固定，另一端悬空的方式，以满足前子线路板与线路板的常用安装需求。
在第一方面可能的实现方式中，所述自由部上设置有多个沿所述自由部的外缘间隔排布的所述第一连接器，所述线路板上且位于相邻两个所述第一连接器之间具有开槽。当自由部上设置多个第一连接器时，即需要多个前子线路板与相对应的多个第一连接器插接，可能相邻两个前子线路板的第一插接端的公差不相同，进而需要相邻两个第一连接器的摆动量不同，这样当其中一个前子线路板上的第一插接端与第一连接器插接时，影响另一个前子线路板与第一连接器的插接，甚至导致整个线路板出现扭曲的现象，但是通过开槽的设置，就可保障每一个第一连接器与前子线路板插接时不会影响旁侧的第一连接器的插接。
在第一方面可能的实现方式中，所述开槽开设在所述线路板的外缘，且所述开槽为沿所述线路板的厚度方向的通槽。将开槽设置在线路板的边缘，且为通槽，以使任一个第一连接器所在的线路板成为一个独立的结构，这样就进一步增加每一个第一连接器吸收容差的能力，相邻两个第一连接器吸收容差的能力大大不同。
在第一方面可能的实现方式中，所述线路板通过固定件与所述支架连接，所述固定件与所述支架相配合的位置处设置有第一定位结构，和/或所述固定件与所述线路板相配合的位置处设置有第二定位结构，所述第一定位结构用于阻止所述线路板和所述固定件相对所述支架沿与所述线路板垂直的方向移动，所述第二定位结构用于阻止所述线路板相对所述固定件沿与所述线路板平行的方向移动。通过设置第一定位结构，确保与线路板插接的第二子线路板能够准确的与线路板对插，通过设置第二定位结构，确保第一子线路板能够准确的与线路板对插，避免出现对插不紧或不能插接的现象。
在第一方面可能的实现方式中，所述第一定位结构包括设置在所述固定件上的第一定位柱和开设在所述支架上的第一定位孔，所述第一定位柱的轴向平行于所述线路板，所述第二定位结构包括设置在所述固定件上的第二定位柱和开设在所述线路板上的第二定位孔，所述第二定位柱的轴向垂直于所述线路板。该第一定位结构和第二定位结构的结构简单，制造工艺简单。
在第一方面可能的实现方式中，所述固定件包括第一固定板和第二固定板，所述第一固定板和所述第二固定板连接呈L型结构，所述第一固定板通过第一连接件与所述支架可拆卸连接，所述第二固定板通过第二连接件与所述线路板可拆卸连接。通过第一固定板和 第二固定板形成固定件，结构简单，且采用第一连接件和第二连接件将相对应的第一固定板和第二固定板可拆卸连接，操作也简便。
在第一方面可能的实现方式中，所述固定件还包括加强板，所述加强板设置在第一固定板和第二固定板之间。通过加强板提高固定件与支架以及线路板的连接强度。
第二方面，本申请还提供了一种背板互连系统，包括：线路板组件和前子线路板，所述线路板组件为上述第一方面或第一方面的任一实现方式中的线路板组件，所述前子线路板具有第一插接端，所述第一插接端与所述第一连接器插接。
本申请实施例提供的背板互连系统，由于线路板组件采用了上述第一方面的任一实施方式所述的线路板组件，该线路板组件中的线路板形成固定部和自由部，通过将固定部固定安装在支架上，自由部悬空以形成悬臂梁结构，且将与前子线路板连接的第一连接器设置在自由部，第一连接器和自由部的摆动量可补偿与其插接的第一插接端的公差，这样就可实现前子线路板与线路板的有效插接。相比现有技术，是采用将线路板以悬臂梁的结构进行固定，并不对前子线路板上设置任何加大容差的结构，进而不会因为增加结构导致前子线路板的结构复杂化，确保前子线路板的布局密度。
在第二方面可能的实现方式中，所述线路板包括层叠布设的第一线路板和第二线路板，所述第一线路板和所述第二线路板上均设置有所述第一连接器，所述前子线路板包括第一前子线路板，所述第一线路板和所述第二线路板均与所述第一前子线路板连接，所述第一前子线路板的相对所述第一线路板的所述第一连接器的位置处设置有所述第一插接端，第一前子线路板的相对所述第二线路板的所述第一连接器的位置处设置有所述第一插接端。当线路板包括第一线路板和第二线路板时，第一前子线路板上具有分别与第一线路板和第二线路板插接的第一插接端，相比现有技术，无需设置两个分别与相对应的第一线路板和第二线路板插接的子线路板，在实现第一线路板和第二线路板互连的基础上，由于第一线路板和第二线路板均具有自由部，即使第一前子线路板的两个第一插接端之间具有公差，也能够同时与第一线路板和第二线路板插接。
在第二方面可能的实现方式中，所述前子线路板还包括与所述第一前子线路板层叠布设的第二前子线路板，所述第一线路板和所述第二线路板层叠布设的方向与所述第一前子线路板和所述第二前子线路板层叠布设的方向垂直，所述第一线路板和所述第二线路板均与所述第二前子线路板连接，所述第一线路板的用于连接所述第一前子线路板和所述第二前子线路板的两个所述第一连接器之间具有开槽，所述第二线路板的用于连接所述第一前子线路板和所述第二前子线路板的两个所述第一连接器之间具有开槽。在实现第一线路板和第二线路板与第一前子线路板和第二前子线路板互连互通的基础上，由于第一线路板的位于相邻两个第一连接器之间具有开槽，这样不会因为第一前子线路板与第一线路板的插接影响第二前子线路板与第一线路板的插接，且避免整个第一线路板出现扭曲的现象，同理，由于第二线路板的位于相邻两个第一连接器之间具有开槽，这样不会因为第一前子线路板与第二线路板的插接影响第二前子线路板与第二线路板的插接，且避免整个第二线路板出现扭曲的现象。
在第二方面可能的实现方式中，还包括后子线路板，所述后子线路板包括层叠布设的第一后子线路板和第二后子线路板，所述第一后子线路板和所述第二后子线路板层叠布设 的方向与所述第一线路板和所述第二线路板层叠布设的方向平行，所述第一后子线路板与所述第一线路板连接，所述第二后子线路板与所述第二线路板连接，所述第一线路板的所述固定部和所述第二线路板的所述固定部上设置有与所述第一后子线路板和所述第二后子线路板相对应连接的第二连接器。通过设置的第一后子线路板和第二后子线路板，实现了第一线路板与第一后子线路板的互连互通，以及第二线路板与第二后子线路板的互连互通，且第二连接器设置在固定部上，由于固定部固定具有一定的刚度，保障了第一后子线路板与第一线路板的连接强度，以及第二后线路板与第二线路板的连接强度。
在第二方面可能的实现方式中，还包括中置连接器，所述中置连接器用于互连所述第一后子线路板和所述第二后子线路板。采用中置连接器，实现第一后子线路板和第二后子线路板的互连互通。
在第二方面可能的实现方式中，所述中置连接器还用于互连所述第一线路板和所述第二线路板。采用中置连接器，实现第一线路板和第二线路板的互连互通，进而实现第一线路板和第二线路板、第一后子线路板和第二后子线路板的互连互通。
在第二方面可能的实现方式中，所述中置连接器包括中置单板，所述中置单板设置在所述第一线路板和所述第一后子线路板之间，或设置在所述第二线路板和所述第二后子线路板之间，所述中置单板的朝向所述第一后子线路板和所述第二后子线路板的一侧设置有与所述第一后子线路板和所述第二后子线路板相对应连接的第二端口，所述中置单板的朝向所述第一线路板和所述第二线路板的一侧设置有与所述第一线路板和所述第二线路板相对应连接的第一端口。采用中置单板作为中置连接器，结构简单，实施方便。
在第二方面可能的实现方式中，所述第一线路板和所述第二线路板的靠近所述中置单板的一侧开设有避让槽，所述中置单板设置在所述避让槽内。通过将中置单板镶嵌在避让槽内，以减少整个背板互连系统所占用的空间，以使整个背板互连系统更加紧凑。
在第二方面可能的实现方式中，所述中置单板为柔性线路板。
在第二方面可能的实现方式中，所述中置连接器包括连接线或者黑盒。
第三方面，本申请还提供了一种电子设备，包括：机箱和背板互连系统，所述背板互连系统设置在所述机箱内，所述背板互连系统为上述第二方面或第二方面的任一实现方式中的背板互连系统。
本申请实施例提供的电子设备，由于背板互连系统采用了上述第二方面的任一实施方式所述的背板互连系统，因此本申请实施例提供的电子设备与上述任一技术方案所述的背板互连系统能够解决相同的技术问题，并达到相同的预期效果。
附图说明
图1为现有技术中一种背板互连系统的结构示意图；
图2为现有技术中一种前端子卡的结构示意图；
图3为现有技术中一种后端子卡的结构示意图；
图4为本申请实施例线路板组件中线路板与固定件的爆炸示意图；
图5为本申请实施例线路板组件中线路板与固定件的连接关系示意图；
图6为本申请实施例线路板组件中线路板与支架的爆炸示意图；
图7为本申请实施例线路板组件中线路板与支架的连接关系示意图；
图8为本申请实施例线路板组件中线路板与支架的局部示意图；
图9为本申请实施例线路板组件中线路板与支架的连接关系示意图；
图10为本申请实施例线路板组件中线路板的局部示意图；
图11为本申请实施例线路板组件中线路板的俯视图；
图12为图11的A-A剖面图；
图13为本申请实施例线路板组件中线路板的俯视图；
图14为图13的B-B剖面图；
图15为本申请实施例线路板组件中线路板的局部示意图；
图16为本申请实施例线路板组件中固定件的结构示意图；
图17为图16的另一个视角图；
图18为本申请实施例背板互连系统中线路板、后子线路板与中置连接器的连接关系示意图；
图19为图18的另一个视角图；
图20为本申请实施例中置单板的结构示意图；
图21为图20的另一个视角图；
图22为本申请实施例前子线路板的结构示意图；
图23为本申请实施例背板互连系统的结构示意图。
具体实施方式
本申请实施例涉及线路板组件、背板互连系统及电子设备，下面结合附图对线路板组件、背板互连系统及电子设备进行详细描述。
一方面，参照图6和图7，本申请实施例提供一种线路板组件，该线路板组件包括支架1和线路板2，线路板2形成有固定部201和自由部202，固定部201与支架1连接，自由部202悬空，自由部202和固定部201共处的面为第一平面，自由部202沿第一方向具有摆动量，第一方向与第一平面垂直，参照图22和图23，线路板2用于与前子线路板3插接，前子线路板3的插接方向(图23所示的S2方向)与自由部202的摆动方向(图23所示的S1方向)垂直，自由部202上设置有与前子线路板3上的第一插接端301插接的第一连接器203，摆动量可使第一连接器203与第一插接端301插接。
线路板2的固定部201安装在支架1上，自由部202悬空，这样自由部202就具有摆动量，且由于摆动量使第一连接器203与第一插接端301插接，即摆动量可补偿与其插接的第一插接端301的沿与线路板垂直方向上的公差，这样第一插接端301就可实现与第一连接器203的对插。需要说明的是：本申请涉及到的公差均指第一插接端301沿与第一平面垂直方向的公差。令第一连接器203沿第一方向朝上摆动时的摆动量为摆动量A1，则摆动量A1大于等于第一插接端301的上偏差，第一连接器203沿第一方向朝下摆动时的摆动量为摆动量A2，则摆动量A2大于等于第一插接端301的下偏差。本申请实施例提供的线路板组件是采用将线路板2以悬臂梁的结构进行固定的方式，这样线路板2的自由部202就具有较大的摆动量，进而具有较大的容纳第一插接端的容差能力，且该线路板组件未在第一子线路板上增加任何加大容差的结构，以确保第一子线路板的布局密度，同时，也简化了第一子线路板的结构，简化了装配工艺。
固定部201和自由部202在线路板2的形成位置具有多种情况，在一些实施方式中，参照图6和图7以及图8，固定部201形成在线路板2的第一端，自由部202形成在线路板2的第二端，第一端和第二端相对；在另外一些实施方式中，参照图9，固定部201形成在线路板2的中部，自由部202包括第一自由部和第二自由部，第一自由部和第二自由部位于固定部201的两侧；在另外一些实施方式中，线路板2为圆形线路板时，固定部201位于圆形线路板的中部，自由部202位于圆形线路板的外缘。所以，本申请对固定部201和自由部202在线路板2上形成的位置不做限定，任何形式均在本申请的保护范围之内。
一般线路板选用条状线路板，线路板2的第一端形成固定部，第二端形成自由部，第一端和第二端相对，此结构是常用的结构。
具体实施时，线路板2可能需要与多个前子线路板3连接，以实现线路板2与多个前子线路板3的互连互通，参照图23，就需要在线路板2的自由部202上设置多个沿自由部202的外缘间隔布设的第一连接器203，多个第一连接器203与多个前子线路板3相对应的一一连接，例如，前子线路板3包括第一前子线路板31和第二前子线路板32，即第一连接器A与第一前子线路板31上的第一插接端插接，第一连接器B与第二前子线路板32上的第一插接端插接。实际插接时，可能第一前子线路板31上的第一插接端的公差与第二前子线路板32上的第一插接端的公差可能不相同，若将第一连接器A与第一前子线路板31上的第一插接端、第一连接器B与第二前子线路板32上的第一插接端插接，导致安装第一连接器A的摆动量和第一连接器B的摆动量不同，进而导致线路板2发生扭曲的现象，若对与第一连接器A插接的与第一前子线路板31拔脱时，会引起第一连接器B发生抖动，影响第一连接器B与第二前子线路板32上的第一插接端的连接强度，甚至会出现脱离的现象。
参照图10，线路板2上且位于相邻两个第一连接器203之间具有开槽207。通过设置开槽207，以使相邻两个第一连接器的摆动量不同，这样就可避免线路板发生扭曲和第一前子线路板拔脱时，造成旁侧的第二前子线路板与线路板发生抖动的现象。
开槽的结构具有多种情况，参照图11和图12，在一些实施方式中，开槽设置在线路板2的外缘，且开槽沿线路板2的厚度方向为通槽；参照图13和图14，在另外一些实施方式中，开槽设置在线路板2的外缘，且开槽沿线路板2的厚度方向为盲槽。当开槽沿线路板2的厚度方向为通槽时，即自由部202的边缘呈锯齿状，这样每一个第一连接器所处的线路板为一个独立的结构，这样进一步增加每一个第一连接器吸收容差的能力，相邻两个第一连接器的吸收容差的能力大大不同；在另外一些实施方式中，开槽远离线路板的外缘，且为沿线路板厚度方向的通槽；在另外一些实施方式中，线路板的位于相邻两个第一连接器之间的部分的厚度小于用于压接第一连接器的部分的厚度，即相邻两个第一连接器之间的线路板较薄，这样也可使相邻两个第一连接器的摆动量不同，以使容纳能力不同。本申请优选的是开槽设置在线路板2的外缘，且开槽沿线路板2的厚度方向为通槽的实施方式，该种结构的开槽不仅加工制造方便，也进一步防止线路板出现扭曲的现象。
线路板2与支架1的连接结构具有多种，示例的，参照图4、图5和图6，线路板2通过固定件5与支架1连接。为了进一步确保线路板的装配精度，降低第一子线路板与线路板的装配公差，固定件5与线路板2相配合的位置处设置有第二定位结构，第二定位结构用于阻止线路板2相对固定件5沿与线路板2平行的方向移动。通过第二定位结构的限定， 保障线路板2与固定件5的相对位置。为了确保线路板与第二子线路板的装配精度，降低第二子线路板与线路板的装配公差，固定件5与支架1相配合的位置处设置有第一定位结构，第一定位结构用于阻止线路板2和固定件5相对支架1沿与线路板2垂直的方向移动。
在一些实施方式中，参照图16和图17，第一定位结构包括设置在固定件5上的第一定位柱71和开设在支架1上的第一定位孔72(参照图6)，第一定位柱71的轴向平行于线路板2，参照图16和图17，第二定位结构包括设置在固定件5上的第二定位柱61和开设在线路板2上的第二定位孔62(参照图4)，第二定位柱61的轴向垂直于线路板2。该第一定位结构和第二定位结构的结构简单，制造工艺简单，装配也方便。
为了简化结构，降低制造成本，参照图16和图17，固定件5包括第一固定板51和第二固定板52，第一固定板51和第二固定板52连接呈L型结构，第一固定板51通过第一连接件8与支架1可拆卸连接(如图8所示)，第二固定板52通过第二连接件9与线路板2可拆卸连接(如图4所示)。通过第一固定板51和第二固定板52形成固定件5，结构简单，制造工艺也简单，且采用第一连接件8和第二连接件9将相对应的第一固定板51和第二固定板52可拆卸连接，操作简便。示例的，第一连接件8和第二连接件9可采用螺栓、螺钉，参照图17，则第一固定板51上开设有供第一连接件8穿过的第一安装孔511，第二固定板52上开设有供第二连接件9穿过的第二安装孔521。
为了保障第一固定板51与支架1的连接强度，以及保障第一定位结构的定位效果，参照图17，两个第二定位柱72和两个第二安装孔521呈对角式设置。第一定位柱71设置在第一安装孔511之间。
为了增加固定件5的稳定性，且提高其与线路板2和支架1的连接强度，参照图16，固定件5还包括加强板53，加强板53连接在第一固定板51和第二固定板52之间。
为了增加线路板2与支架1的连接强度，固定件5可以包括多个。
为了使线路板2的自由部202具有较大的摆动量，参照图15，固定件5的宽度尺寸X远小于线路板2的宽度尺寸Y，这样形成的悬臂梁结构中，自由部202和第一连接器203具有较大的摆动量，进而使线路板具有较大的容差能力。
参照图6，支架1包括多个边框101，多个边框101首尾依次连接形成框架，为了提高框架的强度，框架内设置有支撑板；另外，支架1也可以为其他结构，在此不对支架1的具有结构限定，任何结构均在本申请的保护范围之内。
另一方面，本申请实施例还提供一种背板互连系统，参照图22和图23，该背板互连系统包括前子线路板3和上述实施例提供的线路板组件，前子线路板3具有第一插接端301，第一插接端301与线路板2上的第一连接器203插接，且前子线路板3的插接方向(S2方向)与自由部202的摆动方向(S1方向)垂直。
由于背板互连系统包括上述实施例提供的线路板组件，与前子线路板3连接的线路板2形成有固定部201和自由部202，第一连接器203设置在具有一定摆动量的自由部202上，这样第一连接器203也具有一定的摆动量，由于摆动量使第一连接器203与第一插接端301插接，即摆动量可补偿与其插接的第一插接端301的沿与线路板垂直方向上的公差，这样前子线路板3可与线路板2有效的插接。相比现有技术，也未在前子线路板3上设置金属弹片等加大容差的结构，进而保障了前子线路板3的布局密度。
在一些实施方式中，参照图23，线路板2包括层叠布设的第一线路板21和第二线路板22，第一线路板21和第二线路板22上均设置有第一连接器203，前子线路板3包括第一前子线路板31，第一线路板21和第二线路板22均与第一前子线路板31连接，第一前子线路板31的相对第一线路板21的第一连接器203的位置处设置有第一插接端301，第一前子线路板31的相对第二线路板22的第一连接器203的位置处设置有第一插接端301。也就是说，第一前子线路板31同时与第一线路板21和第二线路板22连接，实现了第一线路板21、第二线路板22和第一前子线路板31的互连互通。
例如，第一线路板21上具有与第一前子线路板31连接的第一连接器P，第二线路板22上具有与第一前子线路板31连接的第一连接器Q，第一前子线路板31具有与第一连接器P插接的第一插接端P和与第一连接器Q插接的第一插接端Q，具体实施时，第一插接端P和第二插接端Q之间可能会具有公差，但是通过第一连接器P和第一连接器Q的摆动量，以使第一前子线路板31能够同时与第一线路板21和第二线路板22的插接。
需要说明的是，本申请实施例提供的背板互连系统还包括第三线路板，甚至更多的线路板，在此对线路板的数量不做限定，当线路板的数量为多个时，相对应的第一前子线路板上也具有多个与相对应的线路板插接的第一插接端。
在一些实施例方式中，参照图23，前子线路板3还包括与第一前子线路板31层叠布设的第二前子线路板32，第一线路板21和第二线路板22层叠布设的方向与第一前子线路板31和第二前子线路板32层叠布设的方向垂直，第一线路板21和第二线路板22均与第二前子线路板32连接，以实现第一前子线路板31与第一线路板21和第二线路板22的正交，以及第二前子线路板32与第一线路板21和第二线路板22的正交。这样也实现了第二前子线路板32与第一线路板21和第二线路板22的互连互通。
第二线路板22上均具有分别与第一前子线路板31和第二前子线路板32连接的第一连接器203，第二前子线路板32上也具有分别与第一线路板21和第二线路板22连接的第一插接端。例如，第一线路板21上具有与第一前子线路板31连接的第一连接器P，第二线路板22上具有与第一前子线路板31连接的第一连接器Q，第一前子线路板31具有与第一连接器P插接的第一插接端P和与第一连接器Q插接的第一插接端Q，第一线路板21上具有与第二前子线路板32连接的第一连接器M，第二线路板22上具有与第二前子线路板32连接的第一连接器N，第二前子线路板32具有与第一连接器M插接的第一插接端M和与第一连接器N插接的第一插接端N。
由于第一线路板21的第一连接器P和第一连接器M之间具有开槽，第二线路板22的第一连接器Q和第一连接器N之间也具有开槽，第一插接端P与第一连接器P具有配合公差，第一插接端Q与第一连接器Q具有配合公差，第一插接端M与第一连接器M具有配合公差，或第一插接端N与第一连接器N具有配合公差，具体插接第一前子线路板31和第二前子线路板32时，第一连接器P与第一插接端P的对插，不会影响第一插接端M与第一连接器M的插接，第一插接端Q与第一连接器Q的插接，也不会影响第一插接端N与第一连接器N的插接，这样不会导致第一线路板21和第二线路板22出现扭曲的现象；具体拔脱第一连接器P与第一插接端P时，也不会导致第一插接端M与第一连接器M发生抖动的现象，确保了第一插接端M与第一连接器M的连接强度。
需要说明的是，本申请实施例提供的背板互连系统还包括第三前子线路板，甚至更多的前子线路板，在此对前子线路板的数量不做限定，当前子线路板的数量为多个时，相对应的第一线路板和第二线路板上也具有多个与相对应的前子线路板插接的第一连接器。参照图23，该背板互连系统还包括后子线路板4，后子线路板4包括层叠布设的第一后子线路板41和第二后子线路板42，第一后子线路板41和第二后子线路板42层叠布设的方向与第一线路板21和第二线路板22层叠布设的方向平行，第一后子线路板41与第一线路板21连接，第二后子线路板42与第二线路板22连接。这样实现了第一后子线路板41与第一线路板21的互连互通，第二后子线路板42与第二线路板22的互连互通。
需要说明的是，本申请实施例提供的背板互连系统还包括第三后子线路板，甚至更多的后子线路板，在此对后子线路板的数量不做限定，每一个后子线路板与相对应的线路板连接。参照图5，第一线路板21的固定部201和第二线路板22的固定部201上设置有与第一后子线路板41和第二后子线路板42相对应连接的第二连接器204，将第二连接器204设置在固定部201上，确保第一线路板和第二线路板具有较强的刚度和定位精度。
参照图18，第一后子线路板41上设置有与第一线路板21上的第二连接器204插接的第二插接端401，第二后子线路板42上也具有与第二线路板22上的第二连接器204插接的第二插接端401。
为了实现第一后子线路板41和第二后子线路板42的互连互通，参照图18和图19，该背板互连系统还包括中置连接器10，中置连接器10用于互连第一后子线路板41和第二后子线路板42。
为了实现第一线路板21和第二线路板22的互连互通，中置连接器10还用于互连第一线路板21和第二线路板22。
中置连接器10具有多种实现结构，示例的，中置连接器10包括中置背板；再示例的，中置连接器10包括连接线；再示例的，中置连接器10包括黑盒。中置背板可以是柔性背板，也可以是刚性背板。在此对中置连接器10的具体结构不做限定，任何结构均在本申请的保护范围之内。
参照图20和图21，中置连接器10包括中置单板，中置单板10设置在第一线路板21和第一后子线路板41之间，或设置在第二线路板22和第二后子线路板42之间，中置单板10的朝向第一后子线路板41和第二后子线路板的一侧设置有与第一后子线路板41和第二后子线路板42相对应连接的第二端口1002，中置单板10的朝向第一线路板21和第二线路板22的一侧设置有与第一线路板21和第二线路板22相对应连接的第一端口1001。这样就实现了第一后子线路板41、第二后子线路板42、第一线路板21和第二线路板22的互连互通。采用中置单板作为中置连接器，结构简单，实施也方便。
为了使整个背板互连系统的结构紧凑，减小背板互连系统所占用的空间，参照图18，第一线路板21和第二线路板22的靠近中置单板的一侧开设有避让槽205，中置单板设置在避让槽205内。当然，可以在中置单板上开设避让槽，第一线路板和第二线路板设置在避让槽内。
另一方面，本申请实施例还提供一种电子设备，该电子设备包括机箱和背板互连系统，其中，背板互连系统为上述实施例提供的背板互连系统，背板互连系统设置在机箱内。
由于该电子设备包括上述实施例提供的背板互连系统，在实现多层前子线路板与多层线路板互连互通，多层后子线路板与多层线路板互连互通的情况下，线路板采用悬臂梁结构，以使线路板具有较大的容差能力，确保前子线路板与线路板的有效插接，且也保障后子线路板与线路板的连接强度。尤其是，前子线路板上未增加任何加大容差的结构，保障前子线路板的结构简化，装配工艺简单，以及前子线路板的布局密度。
在本说明书的描述中，具体特征、结构、材料或者特点可以在任何的一层或多层实施例或示例中以合适的方式结合。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (16)

  1. 一种线路板组件，其特征在于，包括：
    支架；
    线路板，所述线路板形成有固定部和自由部，所述固定部与所述支架连接，所述自由部悬空，所述自由部和所述固定部共处的面为第一平面，所述自由部沿第一方向具有摆动量，所述第一方向与所述第一平面垂直，所述线路板用于与前子线路板插接，所述自由部上设置有与所述前子线路板上的第一插接端插接的第一连接器，所述摆动量可使所述第一连接器与所述第一插接端插接。
  2. 根据权利要求1所述的线路板组件，其特征在于，所述固定部形成在所述线路板的第一端，所述自由部形成在所述线路板的第二端，所述第一端和所述第二端相对。
  3. 根据权利要求1或2所述的线路板组件，其特征在于，所述自由部上设置有多个沿所述自由部的外缘间隔排布的所述第一连接器，所述线路板上且位于相邻两个所述第一连接器之间具有开槽。
  4. 根据权利要求3所述的线路板组件，其特征在于，所述开槽开设在所述线路板的外缘，且所述开槽为沿所述线路板的厚度方向的通槽。
  5. 根据权利要求1-4中任一项所述的线路板组件，其特征在于，所述线路板通过固定件与所述支架连接，所述固定件与所述支架相配合的位置处设置有第一定位结构，和/或所述固定件与所述线路板相配合的位置处设置有第二定位结构，所述第一定位结构用于阻止所述线路板和所述固定件相对所述支架沿与所述线路板垂直的方向移动，所述第二定位结构用于阻止所述线路板相对所述固定件沿与所述线路板平行的方向移动。
  6. 根据权利要求5所述的线路板组件，其特征在于，所述第一定位结构包括设置在所述固定件上的第一定位柱和开设在所述支架上的第一定位孔，所述第一定位柱的轴向平行于所述线路板，所述第二定位结构包括设置在所述固定件上的第二定位柱和开设在所述线路板上的第二定位孔，所述第二定位柱的轴向垂直于所述线路板。
  7. 根据权利要求5或6所述的线路板组件，其特征在于，所述固定件包括第一固定板和第二固定板，所述第一固定板和所述第二固定板连接呈L型结构，所述第一固定板通过第一连接件与所述支架可拆卸连接，所述第二固定板通过第二连接件与所述线路板可拆卸连接。
  8. 一种背板互连系统，其特征在于，包括：
    线路板组件，所述线路板组件为权利要求1-7中任一项所述的线路板组件；
    前子线路板，所述前子线路板具有第一插接端，所述第一插接端与所述第一连接器插接。
  9. 根据权利要求8所述的背板互连系统，其特征在于，所述线路板包括层叠布设的第一线路板和第二线路板，所述第一线路板和所述第二线路板上均设置有所述第一连接器，所述前子线路板包括第一前子线路板，所述第一线路板和所述第二线路板均与所述第一前子线路板连接，所述第一前子线路板的相对所述第一线路板的所述第一连接器的位置处设置有所述第一插接端，第一前子线路板的相对所述第二线路板的所述第一连接器的位置处 设置有所述第一插接端。
  10. 根据权利要求9所述的背板互连系统，其特征在于，所述前子线路板还包括与所述第一前子线路板层叠布设的第二前子线路板，所述第一线路板和所述第二线路板层叠布设的方向与所述第一前子线路板和所述第二前子线路板层叠布设的方向垂直，所述第一线路板和所述第二线路板均与所述第二前子线路板连接，所述第一线路板的用于连接所述第一前子线路板和所述第二前子线路板的两个所述第一连接器之间具有开槽，所述第二线路板的用于连接所述第一前子线路板和所述第二前子线路板的两个所述第一连接器之间具有开槽。
  11. 根据权利要求9或10所述的背板互连系统，其特征在于，还包括后子线路板，所述后子线路板包括层叠布设的第一后子线路板和第二后子线路板，所述第一后子线路板和所述第二后子线路板层叠布设的方向与所述第一线路板和所述第二线路板层叠布设的方向平行，所述第一后子线路板与所述第一线路板连接，所述第二后子线路板与所述第二线路板连接，所述第一线路板的所述固定部和所述第二线路板的所述固定部上设置有与所述第一后子线路板和所述第二后子线路板相对应连接的第二连接器。
  12. 根据权利要求11所述的背板互连系统，其特征在于，还包括中置连接器，所述中置连接器用于连接所述第一后子线路板和所述第二后子线路板。
  13. 根据权利要求12所述的背板互连系统，其特征在于，所述中置连接器还用于连接所述第一线路板和所述第二线路板。
  14. 根据权利要求13所述的背板互连系统，其特征在于，所述中置连接器包括中置单板，所述中置单板设置在所述第一线路板和所述第一后子线路板之间，或设置在所述第二线路板和所述第二后子线路板之间，所述中置单板的朝向所述第一后子线路板和所述第二后子线路板的一侧设置有与所述第一后子线路板和所述第二后子线路板相对应连接的第二端口，所述中置单板的朝向所述第一线路板和所述第二线路板的一侧设置有与所述第一线路板和所述第二线路板相对应连接的第一端口。
  15. 根据权利要求14所述的背板互连系统，其特征在于，所述第一线路板和所述第二线路板的靠近所述中置单板的一侧开设有避让槽，所述中置单板设置在所述避让槽内。
  16. 一种电子设备，其特征在于，包括：
    机箱；
    背板互连系统，所述背板互连系统设置在所述机箱内，所述背板互连系统为权利要求8-15中任一项所述的背板互连系统。
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