A bridge board structure, multi-processor interconnection structure and server

Abstract

The present invention provides a bridge board structure, a multi-processor interconnection structure, and a server, relating to the server field. The bridge board structure is used to achieve signal connection between any two of multiple parallel processors. The bridge board structure includes: a rigid circuit board; a connector provided on the rigid circuit board, the connector being used to plug into the processors to achieve signal connection; a flexible circuit board connecting the two rigid circuit boards to achieve signal connection between the connectors corresponding to the two rigid circuit boards; the degree of curvature of the arched structure of the flexible circuit board is adjustable to change the lateral spacing and / or longitudinal height difference between the connectors corresponding to the two rigid circuit boards. The flexible circuit board provides elastic space, making the lateral spacing and longitudinal height difference between the connectors corresponding to the two rigid circuit boards adjustable, thereby meeting the requirement of absorbing dimensional chain tolerance when interconnecting multiple processors and avoiding problems such as failure or unreliable connection between connectors due to dimensional chain tolerance.

Description

Technical Field

[0001] The present invention relates to the technical field of servers, and in particular to a bridge board structure, a multi-processor interconnection structure and a server. Background Art

[0002] Processor interconnect technology is used to provide efficient communication between multiple processors. It is suitable for servers that require increasingly faster data storage and processing speeds. For example, GPU (Graphics Processing Unit) interconnect technology is a high-speed interconnect technology that enables efficient communication and collaboration between multiple GPUs.

[0003] Specifically, during use, multiple GPUs are interconnected into groups and then installed in a chassis. The dimension chain is long, and the manufacturing tolerance and assembly tolerance accumulated when multiple GPUs are interconnected result in different adjacent spacings. If they are directly connected to the gold fingers of the GPU through an interconnected rigid circuit board, the structure is simple but cannot absorb the dimension chain tolerance. When the server is subjected to vibration and impact testing, there is a risk of component damage.

[0004] It can be seen that how to absorb the dimensional chain tolerance generated when GPUs are interconnected is a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of the embodiments of the present invention is to provide a bridge board structure, a multi-processor interconnection structure and a server, which can absorb the dimensional chain tolerance generated when the processors are interconnected.

[0006] To solve the above technical problems, an embodiment of the present invention provides a bridge board structure for implementing signal connection between any two of a plurality of parallel processors, the bridge board structure comprising:

[0007] Rigid circuit boards;

[0008] A connector, provided on the rigid circuit board, the connector being used to plug into the processor to achieve signal connection;

[0009] A flexible circuit board, connecting the two rigid circuit boards to achieve signal connection between the connectors corresponding to the two rigid circuit boards;

[0010] The flexible circuit board has an arched structure, and the bending degree of the arched structure is adjustable to change the lateral spacing and / or longitudinal height difference between the connectors corresponding to the two rigid circuit boards.

[0011] On the other hand, an opening is provided in the middle of the flexible circuit board to increase the adjustable range of the diameter of the arch structure;

[0012] The size of the long side of the opening is equal to the size of the arched edge A of the arched structure;

[0013] Alternatively, the size of the long side of the opening is larger than the size of the arched edge A of the arched structure.

[0014] On the other hand, the bridging plate structure includes a first bridging plate, the flexible circuit board of the first bridging plate is a first flexible circuit board, the first flexible circuit board is provided with the opening, and the end width dimension of the first flexible circuit board is equal to the width dimension of the connector.

[0015] On the other hand, the bridging plate structure includes a second bridging plate and a third bridging plate, and the flexible circuit board included in the second bridging plate is a second flexible circuit board;

[0016] The flexible circuit board of the third bridge board is a third flexible circuit board, and the sum of the width of an end portion of the second flexible circuit board and the width of an end portion of the third flexible circuit board is smaller than the width of the connector.

[0017] On the other hand, the second bridge board and the third bridge board are both used to connect the processors arranged at intervals, the arched structure of the second flexible circuit board is arched over the upper side of the rigid circuit board corresponding to the third bridge board, and the arched structure of the third flexible circuit board is arched over the upper side of the rigid circuit board corresponding to the second bridge board.

[0018] On the other hand, it further includes a fourth bridge board, which includes the rigid circuit board. Two connectors are provided at both ends of the rigid circuit board for signal connection between two adjacent processors.

[0019] On the other hand, it also includes an insulating protective sheet for forming protection between the rigid circuit board and the processor;

[0020] The connector and the insulating protective sheet are both arranged on the lower side of the rigid circuit board, and the insulating protective sheet is arranged to avoid the connector.

[0021] On the other hand, it also includes a drawstring, which is provided on the rigid circuit board and has a lifting structure, and the lifting structure is used to lift the corresponding rigid circuit board;

[0022] The lifting structure further comprises a fastener, through which the lifting structure is connected to or disconnected from the rigid circuit board, so as to switch between a locking state and a lifting state of the lifting structure.

[0023] On the other hand, the pulling structure is an arc-shaped structure provided by the pull belt, a long opening is provided in the middle of the arc-shaped structure, and the fastener passes through the long opening to be fixed to the rigid circuit board.

[0024] On the other hand, a through hole is provided on the rigid circuit board, and the end of the drawstring passes through the through hole and is attached to the side of the drawstring close to the rigid circuit board;

[0025] The end size of the drawstring is smaller than the middle size of the drawstring, and the intersection position of the end of the drawstring and the middle of the drawstring forms a pasting line, and the end of the drawstring is pasted on the pasting line position.

[0026] On the other hand, the present invention also provides a multi-processor interconnect structure, comprising:

[0027] processor;

[0028] A bridging plate structure, which is any of the bridging plate structures described above;

[0029] The bridge plate structure connects two adjacent processors or connects two processors that are spaced apart, and at least one processor is disposed between the two processors that are spaced apart.

[0030] On the other hand, the bridge plate structure includes an adjustable bridge plate and a fixed bridge plate, and the adjustable bridge plate is provided with the flexible circuit board;

[0031] Two adjacent processors are connected via a fixed bridge plate to achieve signal transmission, and two spaced-apart processors are connected via the adjustable bridge plate to achieve signal transmission.

[0032] On the other hand, the adjustable bridge plate includes a first bridge plate, a second bridge plate, and a third bridge plate, and the fixed bridge plate includes a fourth bridge plate;

[0033] The processors include a first processor, a second processor, a third processor, and a fourth processor arranged in parallel;

[0034] The first bridge board connects the first processor and the fourth processor, the third bridge board connects the fourth processor and the second processor, and the second bridge board connects the first processor and the third processor;

[0035] The fourth bridge board connects two adjacent ones of the first processor, the second processor, the third processor, and the fourth processor.

[0036] On the other hand, the flexible circuit board of the first bridge board has a portion covering the fourth bridge board;

[0037] The flexible circuit board of the second bridge board has a portion covering the rigid circuit board of the third bridge board.

[0038] On the other hand, the present invention further provides a server, comprising:

[0039] Chassis;

[0040] A switching board is provided in the chassis;

[0041] The multi-processor interconnection structure is any one of the multi-processor interconnection structures described above, and the multi-processor interconnection structure is connected to the switch board.

[0042] It can be seen from the above technical solution that the bridge board structure provided by the present invention specifically includes a rigid circuit board, a connector, and a flexible circuit board. The connector is provided on the rigid circuit board and is used to be plugged into the processor to realize signal connection, and the flexible circuit board connects the two rigid circuit boards to realize signal connection between the connectors corresponding to the two rigid circuit boards, that is, to realize signal connection between the processors corresponding to the two connectors, and realize signal transmission; the flexible circuit board has an arch structure, and the bending degree of the arch structure is adjustable, so that there is a certain adjustment space when the signal connection and transmission between the two processors is performed, specifically by changing the horizontal spacing or longitudinal height difference between the connectors corresponding to the two rigid circuit boards to provide adjustable space; when multiple parallel processors need to be interconnected, the use of the flexible circuit board provides elastic space, so that the connection between any two connectors has adjustable space to absorb the dimensional chain tolerance formed by multiple processors, ensure reliable and effective signal connection between multiple connectors, and avoid hardware damage.

[0043] The beneficial effects of the present invention are: by providing elastic space through the flexible circuit board, the lateral spacing and longitudinal height difference between the connectors corresponding to the two rigid circuit boards can be adjusted to meet the requirements of absorbing the dimensional chain tolerance when multiple processors are interconnected, avoiding problems such as failure or unreliable connection between connectors due to dimensional chain tolerance, and avoiding damage to hardware. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0045] Figure 1 This is a schematic structural diagram of the bridging plate structure provided by the present invention.

[0046] Figure 2This is a schematic structural diagram of the first bridging plate provided by the present invention.

[0047] Figure 3 This is a schematic diagram of the operating status of the first bridge plate provided by the present invention.

[0048] Figure 4 This is a schematic structural diagram of the second bridging plate provided by the present invention.

[0049] Figure 5 This is a schematic diagram of the operating status of the second bridge plate provided by the present invention.

[0050] Figure 6 This is a schematic structural diagram of the third bridging plate provided by the present invention.

[0051] Figure 7 This is a schematic diagram of the operating status of the third bridge plate provided by the present invention.

[0052] Figure 8 This is a schematic structural diagram of the fourth bridging plate provided by the present invention.

[0053] Figure 9 This is a schematic diagram of the operating status of the fourth bridge plate provided by the present invention.

[0054] Figure 10 This is a schematic diagram of the structure of the multi-processor interconnection structure provided by the present invention.

[0055] Figure 11 for Figure 10 Exploded diagram.

[0056] Figure 12 This is a schematic diagram of the structure of the server provided by the present invention.

[0057] Figures 1-12 , the reference numerals include:

[0058] 001-bridge board structure; 002-multi-processor interconnection structure;

[0059] 01-first bridge board; 02-second bridge board; 03-third bridge board; 04-fourth bridge board; 05-first processor; 06-second processor; 07-third processor; 08-fourth processor;

[0060] 1-arch structure; 2-rigid circuit board; 3-connector; 4-pull strap; 5-insulation protection sheet; 6-fastener; 7-front crossbeam; 8-rear crossbeam; 9-switch board; 10-chassis;

[0061] 011 - first flexible circuit board; 021 - second flexible circuit board; 031 - third flexible circuit board; 41 - arc-shaped structure; 411 - long opening; 42 - adhesive line; 51 - fastening hole; 101 - opening. DETAILED DESCRIPTION

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0063] The core of this invention is to provide a bridge board structure that uses flexible circuit boards to provide flexible space, allowing for adjustable lateral spacing and vertical height differences between connectors on two rigid circuit boards. This structure accommodates dimensional chain tolerances when interconnecting multiple processors, preventing connector failure or instability caused by dimensional chain tolerances and potentially damaging hardware. Another core aspect of this invention is to provide a multi-processor interconnect structure and server that incorporates this bridge board structure.

[0064] The bridge board structure provided by the present invention is used to connect signals between any two of a plurality of parallel processors. Signal transmission between two processors is achieved through the bridge board structure. Specifically, any two of the plurality of parallel processors may refer to two adjacent processors or two separated by an interval. Here, the two separated by an interval refer to two processors with another processor positioned between them. Signal transmission between the multiple processors is facilitated by the bridge board structure. For example, if three processors are provided, signal interconnection between each of the three processors is achieved through the bridge board structure.

[0065] The specific processor can be a GPU or a CPU (Central Processing Unit). When the processor is a GPU, the bridge board structure provided by the present invention can absorb the dimensional chain tolerances generated when interconnecting GPUs, ensuring the reliability of signal transmission between multiple GPUs.

[0066] The bridge board structure specifically includes a rigid circuit board 2, a flexible circuit board, and a connector 3. Please refer to Figure 2 、 Figure 4 、 Figure 6 、 Figure 8. The connector 3 is provided on the rigid circuit board 2, and the two are connected by signals. Specifically, the connector 3 is used to be plugged into the processor to form a bridge board structure and signal transmission between the processor. For any two of the multiple parallel processors, two rigid circuit boards 2 are correspondingly provided, and a connector 3 is provided on each rigid circuit board 2. The two rigid circuit boards 2 are connected through a flexible circuit board to achieve signal connection, that is, to achieve signal connection between the two connectors 3 corresponding to the two rigid circuit boards 2. When the connector 3 is plugged into the processor, the signal connection between the two processors is achieved.

[0067] Flexible circuit boards need to pass signals. Under the premise of having a certain adjustable space, they have good strength and will not be easily damaged, thus ensuring the reliability of signal transmission.

[0068] The flexible circuit board specifically includes an arch structure 1, which can be arranged at a part of the flexible circuit board, such as in the middle of the flexible circuit board, at the end of the flexible circuit board, or along the entire length direction of the flexible circuit board. The length direction here is the relatively longer side of the flexible circuit board, that is, the direction in which the arch structure 1 can be deformed to change its diameter.

[0069] The curvature of the arched structure 1 is adjustable, and the adjustment of the curvature can be achieved by moving one end of the arched structure 1 or by moving both ends of the arched structure 1. In addition, the movement direction of one or both ends of the arched structure 1 can be horizontal or have a certain slope.

[0070] The bending degree of the arch structure 1 can be adjusted to change the horizontal spacing and / or vertical height difference between the connectors 3 corresponding to the two rigid circuit boards 2. Figure 10 As shown in the middle direction, the horizontal direction is the arrangement direction of multiple processors, and the vertical direction is the height direction of the processors.

[0071] Taking one specific embodiment as an example, by moving the two ends of the arched structure 1 relatively close to or away from each other laterally, and based on the end of the arched structure 1 being connected to the rigid circuit board 2, the lateral spacing between the two rigid circuit boards 2 can be adjusted, and thus the lateral spacing between the connectors 3 corresponding to the two rigid circuit boards 2 can be adjusted. When multiple processors are interconnected, the degree of curvature of the arched structure 1 can be appropriately adjusted based on the actual installation of the processors and the corresponding connectors 3 of the rigid circuit boards 2, so that a reliable and effective connection is achieved between the two corresponding processors. When the lateral spacing between the two processors varies due to the accumulation of manufacturing and assembly tolerances, the use of the arched structure 1 of the flexible circuit board effectively absorbs the accumulated tolerances, ensuring the reliability of the interconnection of multiple processors and avoiding damage to the hardware.

[0072] Taking another specific embodiment as an example, by longitudinally moving at least one end of the arched structure 1, the degree of curvature of the arched structure 1 also changes. When interconnecting multiple processors, the end of the arched structure 1 can be longitudinally moved based on the actual installation of the processors and the corresponding connectors 3 of the rigid circuit board 2, ensuring a reliable and effective connection between the processors and the corresponding connectors 3. If the accumulated manufacturing and assembly tolerances result in different longitudinal spacing between two processors, the use of the flexible circuit board arched structure 1 effectively absorbs the accumulated tolerances, ensuring the reliability of the interconnection of multiple processors and preventing hardware damage.

[0073] Taking another specific implementation as an example, the lateral and longitudinal movements of the arch structure 1 are coordinated to absorb the cumulative tolerance generated when the processors are interconnected, thereby ensuring a reliable and effective connection between the two processors corresponding to the arch structure 1 and avoiding damage to the hardware.

[0074] Taking the northbound interconnection of multiple PCIE (Peripheral Component Interconnect Express) GPU cards as an example, northbound interconnection builds a communication network between servers through the GPU northbound interconnection domain, also known as inter-machine interconnection. This northbound interconnection enables high-speed communication between GPUs, supporting applications such as large-scale parallel computing and distributed training. The aforementioned bridge board structure ensures reliable connectivity between multiple GPU cards, avoiding the structural issue of rigid circuit boards being unable to absorb dimensional chain tolerances when bridging the GPU card northbound interconnection. This prevents damage to the rigid circuit boards, GPU cards, and even switch boards during server vibration and impact testing.

[0075] To facilitate the transfer and transportation of flexible circuit boards, the flexible circuit boards can be processed into an arch shape during the board length processing, and the tray of the flexible circuit boards can also be set to an arch shape to facilitate the assembly between the flexible circuit boards and other components and the processing of the bridge boards.

[0076] On the basis of the above embodiment, an opening 101 is provided in the middle of the flexible circuit board to increase the adjustable range of the arch structure 1. The increase in the adjustable range here essentially increases the softness of the flexible circuit board through the provision of the opening 101, so that the bending degree of the arch structure 1 can have a larger range of variation, and the arch structure 1 can have a larger deformation space, so as to be more flexibly applicable to the signal connection between multiple interconnected processors.

[0077] The specific opening 101 can be set in a dog-bone shape, a long strip shape, a waist shape, a rectangle shape or other shapes, which can provide a more flexible space for the arch structure 1 to deform. The dog-bone shape is specifically a form with a small hole diameter in the middle and large hole diameters at both ends.

[0078] It should be noted that the size of opening 101 must fully consider the reliability of the flexible circuit board's overall signal transmission and should not be too large, but should be sufficient for practical use. Furthermore, the size of opening 101 must also consider the clearance for screws when connecting the bridge board structure and the processor. Screws can be inserted through opening 101 to secure the processor, flexible circuit board, and rigid circuit board 2.

[0079] In addition, if the processor, flexible circuit board, and rigid circuit board 2 are not locked by screws, it is also possible to rely on snaps or the friction between the connector and the processor, as long as a reliable connection can be achieved between the flexible circuit board, the rigid circuit board 2, and the processor. The reliable connection here refers to mechanical connection and signal connection.

[0080] In a specific embodiment, the opening 101 is configured as a rectangular hole having a long side and a short side. The relatively longer side is the long side of the opening 101 , and the relatively shorter side is the short side of the opening 101 .

[0081] In a specific embodiment, the size of the long side of the opening 101 is equal to the size of the arched edge A of the arched structure 1. In this case, the two ends of the flexible circuit board are connected to the corresponding rigid circuit board 2, and the middle part of the flexible circuit board is provided with the arched structure 1. The opening 101 is specifically provided on the outer periphery of the arched structure 1. The size of the long side of the opening 101 is set to be consistent with the arched edge A of the arched structure 1. While not affecting the reliable connection between the flexible circuit board and the corresponding rigid circuit board 2, the flexibility of the adjustment of the arched structure 1 is improved to better meet the dimensional chain tolerance generated when multiple processors are interconnected.

[0082] In another embodiment, the size of the long side of the opening 101 is larger than the size of the arch edge A of the arch structure 1. Figure 2 and Figure 3 As shown, opening 101 extends from the periphery of arched structure 1 to both ends of the flexible circuit board, maximizing the area of ​​opening 101 and enhancing adjustment flexibility. It should be noted that opening 101 is a closed-structure hole provided on the flexible circuit board. A closed structure, as used herein, refers to a closed shape, such as a circle or square, connected end to end. Even if the long side of opening 101 is larger than the arched edge A of arched structure 1, opening 101 will not extend through the entire length of the flexible circuit board, ensuring the signal transmission performance of the flexible circuit board.

[0083] On the basis of setting the opening 101 on the flexible circuit board, multiple openings can be set, such as setting a long strip opening in the middle of the flexible circuit board, and setting slightly smaller avoidance holes on both sides of the long strip opening. The avoidance holes and the opening 101 can both improve the adjustment flexibility and provide an avoidance effect for screwing between the processor and the bridge board structure.

[0084] Based on any of the above embodiments, please refer to Figure 2 and Figure 3 The bridge board structure includes a first bridge board 01, a first flexible circuit board 011, and a rigid circuit board 2 connecting the two ends of the first flexible circuit board. Specifically, the first bridge board 01 includes the first flexible circuit board 011, two rigid circuit boards 2, and two connectors 3. Each rigid circuit board 2 corresponds to a connector 3 for connecting to a processor.

[0085] The first flexible circuit board 011 is provided with an opening 101, and the width of the end portion of the first flexible circuit board 011 is equal to the width of the connector 3. Figure 2 、 Figure 10 As shown, the first bridge plate 01 is highly adjustable, allowing it to connect processors at greater distances. This distance is defined as the distance between two adjacent connectors. By providing an opening 101 in the center of the first flexible circuit board 011, the flexibility of the first flexible circuit board 011 is increased, allowing for greater flexibility in the arched structure 1 on the first flexible circuit board 011. By varying the curvature of the arched structure 1 according to the position of the processors and corresponding connectors 3, the dimensional chain tolerances of multiple processors can be accommodated, ensuring a reliable connection between the processors and their corresponding connectors 3 and preventing hardware damage.

[0086] Based on any of the above embodiments, the bridging plate structure includes a second bridging plate 02 and a third bridging plate 03. Please refer to Figures 4 to 7 .

[0087] The flexible circuit board of the second bridge board 02 is a second flexible circuit board 021. Two rigid circuit boards 2 are connected to the ends of the second flexible circuit board 021. Two connectors 3 are provided in a one-to-one correspondence with the rigid circuit boards 2. The flexible circuit board of the third bridge board 03 is a third flexible circuit board 031. Two rigid circuit boards 2 are connected to the ends of the third flexible circuit board 031. Two connectors 3 are provided in a one-to-one correspondence with the rigid circuit boards 2.

[0088] First, it should be noted that both the second flexible circuit board 021 and the third flexible circuit board 031 have an arched structure 1, which is used to absorb dimensional chain tolerances when interconnecting processors. The arched structures 1 can be identical or different, without limitation. Through the combined action of the second bridge board 02, the third bridge board 03, and the first bridge board 01, any two of the multiple processors can be connected via the second bridge board 02, the third bridge board 03, or the first bridge board 01, enabling signal transmission between the multiple processors and achieving reliable interconnection.

[0089] In addition, the sum of the width of the end of the second flexible circuit board 021 and the width of the end of the third flexible circuit board 031 is smaller than the width of the connector 3, that is, the width of the end of the second bridge plate 02 and the third bridge plate 03 is smaller than the width of the connector 3. The width of the end here is taken as an example of the arch structure 1 formed by the flexible circuit board as a whole being a rectangular structure. Figure 4 and Figure 6 ), with the relatively wider side being the width direction. In this case, the width dimensions of the ends of the second flexible circuit board 021 and the third flexible circuit board 031 can be equal or unequal. For example, if the width dimensions of the ends are equal, and if multiple processors are of the same model and have the same corresponding sockets, the sockets here are the sockets for signal connection of connector 3. When the second flexible circuit board 021 and the third flexible circuit board 031 are simultaneously used in the same sockets on multiple processors, the second flexible circuit board 021 and the third flexible circuit board 031 can be staggered to avoid interference. This reduces the size of the flexible circuit board without affecting signal transmission, allowing any two of the multiple processors to be connected via the second bridge board 02 or the third bridge board 03 to reduce the operating space without affecting the reliable connection between the connector 3 on the rigid circuit board 2 and the processor sockets. Furthermore, the staggered arrangement of the second flexible circuit board 021 and the third flexible circuit board 031 allows the sockets at the same position on multiple processors to be effectively connected, ensuring signal transmission between the multiple processors.

[0090] Based on any of the above embodiments, the second bridge board 02 and the third bridge board 03 are both used to connect the spaced-apart processors. The arched structure 1 of the second flexible circuit board 021 arches over the upper side of the rigid circuit board 2 corresponding to the third bridge board 03, and the arched structure 1 of the third flexible circuit board 031 arches over the upper side of the rigid circuit board 2 corresponding to the second bridge board 02.

[0091] Please refer to Figure 10 、 Figure 11 、 Figure 4 、 Figure 6Specifically, when in use, the second bridge board 02 and the third bridge board 03 are used to connect processors that are spaced apart. Taking four processors as an example, the sockets of the four processors located at the same position are connected through the corresponding connectors 3 on the second bridge board 02 and the third bridge board 03, wherein the socket of the first processor is connected to the socket of the third processor through the second bridge board 02, and the socket of the second processor is connected to the socket of the fourth processor through the third bridge board 03. The second flexible circuit board 021 and the third flexible circuit board 031 essentially only need to realize signal transmission and have a certain degree of flexibility for easy adjustment. Therefore, by limiting the end width dimensions of the second flexible circuit board 021 and the end width dimensions of the third flexible circuit board 031 to be smaller than the width dimension of the connector 3, and the sum of the end width dimensions of the second flexible circuit board 021 and the end width dimensions of the third flexible circuit board 031 is smaller than the size of the connector 3, the arched structure 1 of the second flexible circuit board 021 is arched over the upper side of the rigid circuit board 2 corresponding to the third bridge board 03, and the arched structure 1 of the third flexible circuit board 031 is arched over the upper side of the rigid circuit board 2 corresponding to the second bridge board 02. The operations of the second bridge board 02 and the third bridge board 03 do not affect each other, thereby ensuring flexible adjustability when connecting the two processors set apart and the corresponding connector 3.

[0092] Based on any of the above embodiments, a fourth bridge board 04 is further included. The fourth bridge board 04 includes a rigid circuit board 2. Two connectors 3 are provided at both ends of the rigid circuit board 2 for signal connection between two adjacent processors.

[0093] Please refer to Figure 8 、 Figure 9 The fourth bridge board 04 specifically includes a rigid circuit board 2 and two connectors 3 provided at both ends of the rigid circuit board 2. Signal transmission between the two connectors 3 is realized through the rigid circuit board 2, that is, signal transmission between two adjacent processors corresponding to the two connectors 3 is realized.

[0094] Fourth bridge board 04 is specifically suitable for connecting two adjacent processors. This is because the spacing between the two adjacent processors is relatively small. Even if a flexible circuit board is used, it would not provide sufficient flexibility and effective adjustment. In this case, the flexible circuit board can be directly discarded, and the signal transmission between the two connectors 3 can be achieved through a whole rigid circuit board 2. Since there are usually multiple processors interconnected, such as four, six, or eight, even if the connection between two adjacent processors via fourth bridge board 04 cannot be adjusted according to the installation situation, the connection between two processors at other intervals can still be adjusted via first bridge board 01, second bridge board 02, and third bridge board 03, without affecting the ability of the entire bridge board structure to meet the tolerance requirements of the dimensional chain.

[0095] When the first bridge board 01, the second bridge board 02, the third bridge board 03 and the fourth bridge board 04 are used simultaneously, the fourth bridge board 04 and the processor can be connected first, and then the first bridge board 01, the second bridge board 02, the third bridge board 03 and the processor can be connected. Considering that the arched structure 1 of the second flexible circuit board 021 is arched over the upper side of the rigid circuit board 2 corresponding to the third bridge board 03, and the arched structure 1 of the third flexible circuit board 031 is arched over the upper side of the rigid circuit board 2 corresponding to the second bridge board 02, the second bridge board 02 and the first bridge board 01 can be connected simultaneously. The simultaneous connection here means that the rigid circuit board 2 and the connector 3 at the same end of the second bridge board 02 and the first bridge board 01 are first installed, and then the rigid circuit board 2 and the connector 3 at the other end are installed.

[0096] Based on any of the above embodiments, it further includes an insulating protective sheet 5 for forming protection between the rigid circuit board 2 and the processor;

[0097] The connector 3 and the insulating protective sheet 5 are both disposed on the lower side of the rigid circuit board 2 , and the insulating protective sheet 5 is disposed away from the connector 3 .

[0098] Please refer to Figures 2 to 9 The first bridge plate 01, the second bridge plate 02, the third bridge plate 03, and the fourth bridge plate 04 all include an insulating protective sheet 5. The insulating protective sheet 5 can be a Mylar sheet or other structural member with an insulating coating or a self-insulating material. The insulating protective sheet 5 is provided with fastening holes 51 for connection. Screws pass through the fastening holes 51 to connect the insulating protective sheet 5 to the underside of the rigid circuit board 2.

[0099] The connector 3 and the insulating protective sheet 5 are both arranged on the lower side of the rigid circuit board 2, and the insulating protective sheet 5 is arranged to avoid the connector 3. The insulating protective sheet 5 is arranged between the lower side of the rigid circuit board 2 and the upper side of the processor. The insulating protective sheet 5 is used to protect the part of the rigid circuit board 2 where the connector 3 is not set and the processor. The specific protection effect is to prevent the rigid circuit board 2 from directly contacting the metal surface of the processor to cause a short circuit or being damaged by the metal surface of the processor.

[0100] The connector 3 is directly inserted into the socket of the processor to realize signal connection, so the insulating protection sheet 5 can be arranged at other positions on the lower side of the rigid circuit board 2 except the connector 3 to ensure reliable protection effect.

[0101] Based on any of the above embodiments, please refer to Figures 2 to 9The bridge plate structure also includes a drawstring 4. Specifically, the first bridge plate 01, the second bridge plate 02, the third bridge plate 03, and the fourth bridge plate 04 all include a drawstring 4. For the first bridge plate 01, the second bridge plate 02, and the third bridge plate 03, one or two drawstrings 4 are provided for each of the two rigid circuit boards 2. This means that each rigid circuit board 2 is connected to a drawstring 4, or one of the two rigid circuit boards 2 is connected to a drawstring 4. Similarly, for the fourth bridge plate 04, one or two drawstrings 4 are provided for each rigid circuit board 2. This means that each rigid circuit board 2 is provided with one or two drawstrings 4.

[0102] Taking the example that each rigid circuit board 2 corresponding to the first bridge board 01, the second bridge board 02, and the third bridge board 03 is provided with a pull tape 4, and the fourth bridge board 04 is provided with a pull tape 4, the pulling structure of the pull tape 4 is used to pull the corresponding rigid circuit board 2, so as to realize pulling the first bridge board 01, the second bridge board 02, the third bridge board 03, and the fourth bridge board 04 from both ends, thereby facilitating the assembly between the bridge board and the processor.

[0103] The bridge plate structure also includes fasteners 6, which connect and disconnect the lifting structure from the rigid circuit board 2, enabling the lifting structure to switch between a locked and lifted state. The lifting structure of the pull strap 4 is locked when the bridge plate is in operation, locking the lifting structure to the rigid circuit board 2 via the fasteners 6. When the bridge plate is assembled, the lifting structure of the pull strap 4 forms an arch, making it easy for an operator to insert their fingers into the arch to lift the corresponding bridge plate.

[0104] The fastener 6 can be a screw or other fasteners, and can be configured as a captive screw to ensure reliable locking of the lifting structure when the bridge plate is in the working state.

[0105] Based on any of the above embodiments, the pulling structure is an arc-shaped structure 41 provided on the pull belt 4 , a long opening 411 is provided in the middle of the arc-shaped structure 41 , and the fastener 6 passes through the long opening 411 to be fixed to the rigid circuit board 2 .

[0106] Please refer to Figures 2 to 9 The pulling structure is an arc-shaped structure 41 set on the pull belt 4, and a long opening 411 is set in the middle of the arc-shaped structure 41. The long opening 411 is specifically a hole position for the fastener 6 to pass through. The fastener 6 passes through the long opening 411 and is fixed to the rigid circuit board 2, so that the corresponding pulling structure on the rigid circuit board 2 is locked, corresponding to the working state of the bridge plate. The bridge plates here are the first bridge plate 01, the second bridge plate 02, the third bridge plate 03, and the fourth bridge plate 04.

[0107] The setting of the long strip opening 411 facilitates the passage of the fastener 6 to lock the lifting structure. When the fastener 6 passes through the long strip opening 411 to lock, the lifting structure is pressed onto the hard circuit board 2 by connecting the hard circuit board 2 to form a locked state.

[0108] There is no restriction on the location of the long opening 411 , and the long opening 411 can be set at the middle or end of the drawstring 4 , etc., specifically matching the location of the locking hole on the rigid circuit board 2 .

[0109] Based on any of the above embodiments, the rigid circuit board 2 is provided with a through hole. The end of the draw tape 4 extends through the through hole and is attached to the side of the draw tape 4 closest to the rigid circuit board 2. The side of the draw tape 4 closest to the rigid circuit board 2 is the inner side of the draw tape 4. Specifically, the through holes are provided on both sides of the rigid circuit board 2, so that both ends of the draw tape 4 have a through area. After the two ends of the draw tape 4 pass through the through holes, they are connected to the inner side of the draw tape 4 to form an assembly of the draw tape 4 and the rigid circuit board 2.

[0110] The end size of the pull strap 4 is smaller than the middle size of the pull strap 4 to reduce the size of the through hole opened on the rigid circuit board 2, while the wider size in the middle can enhance the strength of the pull strap 4 and ensure the reliability of the pulling structure of the pull strap 4.

[0111] The intersection of the end of the draw tape 4 and the middle of the draw tape 4 forms a step, which is used to form the pasting line 42. The end of the draw tape 4 passes through the hole and is pasted on the pasting line 42, providing a reference and benchmark for the fixed position of the end of the draw tape 4, thereby improving the speed and accuracy of the connection between the draw tape 4 and the hard circuit board 2.

[0112] By limiting the structural dimensions of the pull strap 4, the structural strength of the pull strap 4 is improved, the operational reliability is enhanced, and at the same time, it is avoided that the hole opening on the rigid circuit board 2 is too large to affect its transmission function, and a reference and benchmark is provided for fixing the pull strap 4 on the rigid circuit board 2, thereby improving assembly efficiency.

[0113] In addition to the above-mentioned bridge board structure, the present invention further provides a multi-processor interconnect structure including the bridge board structure disclosed in the above-mentioned embodiment, the multi-processor interconnect structure including:

[0114] processor;

[0115] The bridging plate structure 001 is the bridging plate structure 001 of any of the above embodiments. The bridging plate structure 001 specifically includes a first bridging plate 01 , a second bridging plate 02 , a third bridging plate 03 , and a fourth bridging plate 04 .

[0116] The bridge board structure 001 connects two adjacent processors or two processors that are spaced apart. There is at least one processor between the two spaced apart processors. For example, if six processors are arranged in parallel, the first and third, second and fifth are two spaced apart processors, and the first and second are two adjacent processors.

[0117] Specifically, in application, the bridge board without a flexible circuit board among the first bridge board 01 , the second bridge board 02 , the third bridge board 03 and the fourth bridge board 04 connects two adjacent processors, while the other bridge boards connect processors that are spaced apart.

[0118] By setting up a flexible circuit board, the assembly tolerance between processors such as GPUs can be absorbed, avoiding damage to the bridge board or GPU card during vibration testing or impact testing when a hard circuit board is used to bridge all GPUs, thereby avoiding hardware damage.

[0119] On the basis of the above embodiment, the bridging plate structure 001 includes an adjustable bridging plate and a fixed bridging plate, and the adjustable bridging plate is provided with a flexible circuit board;

[0120] Two adjacent processors are connected via a fixed bridge plate to achieve signal transmission, and two processors spaced apart are connected via an adjustable bridge plate to achieve signal transmission.

[0121] The adjustable bridge board, or bridge board with an arched structure 1, can adjust the horizontal spacing and / or vertical height difference between connectors 3 on two rigid circuit boards 2, depending on the alignment of the corresponding processors and connectors 3 on the rigid circuit boards 2. This is suitable for spaced-apart processors that are relatively far apart. The flexibility of the flexible circuit board can be leveraged to provide adjustability, accommodating dimensional chain tolerances that arise when interconnecting multiple processors.

[0122] The fixed bridge board is used to connect two adjacent processors. This fixed bridge board does not have a flexible circuit board structure. This is because the distance between the two adjacent processors is small. Even if a flexible circuit board is set, the softness may not be enough to support the adjustment effect. In this case, the signal transmission between the two processors can be achieved through the fixed bridge board. As for absorbing the dimensional chain tolerance, the adjustable bridge board can be relied upon.

[0123] Based on any of the above embodiments, the adjustable bridging plate includes a first bridging plate 01 , a second bridging plate 02 , and a third bridging plate 03 , and the fixed bridging plate includes a fourth bridging plate 04 ;

[0124] The processors include a first processor 05, a second processor 06, a third processor 07, and a fourth processor 08 that are arranged in parallel. Each processor is provided with three sockets for signal connection of the connector 3. The sockets here can be specifically gold finger components.

[0125] The first bridge board 01 connects the first processor 05 and the fourth processor 08 , the third bridge board 03 connects the fourth processor 08 and the second processor 06 , and the second bridge board 02 connects the first processor 05 and the third processor 07 ;

[0126] One fourth bridge board 04 connects the first processor 05 and the second processor 06 , another fourth bridge board 04 connects the second processor 06 and the third processor 07 , and another fourth bridge board 04 connects the third processor 07 and the fourth processor 08 .

[0127] Through the corresponding connection relationship between the above-mentioned bridge board and the processor, signal transmission can be achieved between any two processors, meeting the operation requirements of the interconnected processors.

[0128] Based on any of the above embodiments, the flexible circuit board of the first bridge board 01 has a portion covering the fourth bridge board 04;

[0129] The flexible printed circuit board of the second bridge plate 02 has a portion covering the rigid printed circuit board 2 of the third bridge plate 03 .

[0130] Please refer to Figure 3 、 Figure 10 、 Figure 11 When connecting the processors to the bridge board, the flexible circuit board corresponding to the first bridge board 01, namely the first flexible circuit board 011, is a single-piece flexible circuit board. The term "single-piece" here specifically means that the width of the first flexible circuit board 011 is consistent with the width of the connector 3. The arched space formed by the first flexible circuit board 011 provides space for the fourth bridge board 04. Specifically, the fourth bridge board 04, which connects the second processor 06 and the third processor 07, is located on the lower side of the arched space formed by the first flexible circuit board 011. The first bridge board 01 and the fourth bridge board 04 do not interfere with each other, while meeting the plug-in requirements of the four sockets arranged in parallel on the four processors, fully utilizing the available space.

[0131] When connecting the processors to the bridge board, the flexible printed circuit board of the second bridge board 02 covers a portion of the rigid printed circuit board 2 of the third bridge board 03. The flexible printed circuit boards on the second and third bridge boards 02 and 03 are approximately half-piece structures. The half-piece structure here specifically means that the width of the flexible printed circuit board is approximately equal to half the width of the connector 3, and specifically slightly less than half the width of the connector 3. This prevents interference between the second flexible printed circuit board 021 of the second bridge board 02 and the third flexible printed circuit board 031 of the third bridge board 03. Similarly, this allows for simultaneous connection of the four parallel sockets of the four processors, fully utilizing the available space. It should be noted that the four parallel sockets here and the four sockets in the previous section are in different rows.

[0132] In addition to the above multi-processor interconnection structure 002, the present invention also provides a server, please refer to Figure 12 , the server includes:

[0133] Chassis 10;

[0134] The switch board 9 is provided in the chassis 10;

[0135] The multi-processor interconnection structure 002 is the multi-processor interconnection structure 002 of any of the above embodiments, and the multi-processor interconnection structure 002 is connected to the switch board 9 .

[0136] The specific assembly of the switch board 9 is as follows: remove the front crossbeam 7 from the chassis 10, install the switch board 9 in the chassis 10 from top to bottom, and fasten the switch board 9 with screws, and then reassemble the front crossbeam 7 on the chassis 10.

[0137] Furthermore, the processors are assembled with brackets and baffles, and multiple processors are assembled into chassis 10. The brackets for the processors are mounted on the front crossbeam 7, and the baffles for the processors are mounted on the rear crossbeam 8. Furthermore, the bottoms of the processors are connected to the switch board 9 for signal connections.

[0138] For further reference, Figure 11 , install the first bridge board 01, the second bridge board 02, the third bridge board 03, and the fourth bridge board 04 on the corresponding processors in the order of installing the fourth bridge board 04 first and then installing the other bridge boards, so as to realize signal connection between adjacent processors.

[0139] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0140] The above describes in detail the bridge board structure, multi-processor interconnect structure, and server provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A bridge board structure for realizing signal connection between any two of a plurality of parallel processors, characterized in that: The bridging plate structure comprises: Rigid circuit board (2); A connector (3) is provided on the rigid circuit board (2), and the connector (3) is used to be plugged into the processor to achieve signal connection; A flexible circuit board connected to the two rigid circuit boards (2) to achieve signal connection between the connectors (3) corresponding to the two rigid circuit boards (2); The flexible circuit board has an arched structure (1), and the degree of curvature of the arched structure (1) is adjustable to change the lateral spacing and / or longitudinal height difference between the connectors (3) corresponding to the two rigid circuit boards (2); An opening (101) is provided in the middle of the flexible circuit board to increase the adjustable range of the diameter of the arch structure (1); the opening (101) is a long strip opening, and avoidance holes are provided on both sides of the long strip opening; the avoidance holes and the long strip opening are used to improve the adjustment flexibility and provide avoidance for screwing between the processor and the bridge plate structure; The bridging plate structure comprises a first bridging plate (01), the flexible circuit board of the first bridging plate (01) is a first flexible circuit board (011), and the first flexible circuit board (011) is provided with the opening (101); The bridging plate structure comprises a second bridging plate (02) and a third bridging plate (03); The flexible circuit board of the second bridging plate (02) is a second flexible circuit board (021); The flexible circuit board of the third bridge plate (03) is a third flexible circuit board (031); The second bridge board (02) and the third bridge board (03) are both used to connect the processors arranged at intervals, the arched structure (1) of the second flexible circuit board (021) arches above the upper side of the rigid circuit board (2) corresponding to the third bridge board (03), and the arched structure (1) of the third flexible circuit board (031) arches above the upper side of the rigid circuit board (2) corresponding to the second bridge board (02); It also includes a fourth bridge board (04), the fourth bridge board (04) including the rigid circuit board (2), two connectors (3) being provided at both ends of the rigid circuit board (2) for signal connection between two adjacent processors, and the arched space formed by the first flexible circuit board (011) can provide space for the fourth bridge board (04); It also includes a drawstring (4), the drawstring (4) being provided on the rigid circuit board (2), the drawstring (4) being provided with a lifting structure, and the lifting structure being used to lift the corresponding rigid circuit board (2).

2. The bridging plate structure according to claim 1, characterized in that: The size of the long side of the opening (101) is equal to the size of the arched edge A of the arched structure (1); or, the size of the long side of the opening (101) is greater than the size of the arched edge A of the arched structure (1).

3. The bridging plate structure according to claim 2, characterized in that: The width dimension of the end portion of the first flexible circuit board (011) is equal to the width dimension of the connector (3).

4. The bridging plate structure according to claim 1, characterized in that: The sum of the width dimension of the end portion of the second flexible circuit board (021) and the width dimension of the end portion of the third flexible circuit board (031) is smaller than the width dimension of the connector (3).

5. The bridge plate structure according to any one of claims 1 to 4, characterized in that: It also includes an insulating protective sheet (5) for forming protection between the rigid circuit board (2) and the processor; The connector (3) and the insulating protective sheet (5) are both arranged on the lower side of the rigid circuit board (2), and the insulating protective sheet (5) is arranged to avoid the connector (3).

6. The bridging plate structure according to claim 5, characterized in that: It also includes a fastener (6), and the lifting structure is connected to or disconnected from the hard circuit board (2) via the fastener (6) to achieve switching between a locking state and a lifting state of the lifting structure.

7. The bridging plate structure according to claim 6, characterized in that: The lifting structure is an arc-shaped structure (41) provided on the drawstring (4), a long opening (411) is provided in the middle of the arc-shaped structure (41), and the fastener (6) passes through the long opening (411) to be fixed to the rigid circuit board (2).

8. The bridging plate structure according to claim 7, characterized in that: The rigid circuit board (2) is provided with a through hole, and the end of the drawstring (4) passes through the through hole and is adhered to a side of the drawstring (4) close to the rigid circuit board (2); The end size of the drawstring (4) is smaller than the middle size of the drawstring (4), and the intersection position of the end of the drawstring (4) and the middle of the drawstring (4) forms a bonding line (42), and the end of the drawstring (4) is bonded to the bonding line (42).

9. A multi-processor interconnect structure, characterized in that: include: processor; A bridging plate structure (001) is the bridging plate structure (001) according to any one of claims 1 to 8; The bridge plate structure (001) connects two adjacent processors or connects two processors that are spaced apart, and at least one processor is arranged between the two spaced apart processors.

10. The multi-processor interconnect structure according to claim 9, wherein: The bridging plate structure (001) comprises an adjustable bridging plate and a fixed bridging plate, wherein the adjustable bridging plate is provided with the flexible circuit board; Two adjacent processors are connected via a fixed bridge plate to achieve signal transmission, and two spaced-apart processors are connected via the adjustable bridge plate to achieve signal transmission.

11. The multi-processor interconnect structure according to claim 10, wherein: The adjustable bridging plate comprises a first bridging plate (01), a second bridging plate (02), and a third bridging plate (03); and the fixed bridging plate comprises a fourth bridging plate (04); The processors include a first processor (05), a second processor (06), a third processor (07), and a fourth processor (08) arranged in parallel; The first bridge board (01) connects the first processor (05) and the fourth processor (08), the third bridge board (03) connects the fourth processor (08) and the second processor (06), and the second bridge board (02) connects the first processor (05) and the third processor (07); The fourth bridge board (04) connects two adjacent ones of the first processor (05), the second processor (06), the third processor (07), and the fourth processor (08).

12. The multi-processor interconnect structure according to claim 11, wherein: The flexible circuit board of the first bridge plate (01) has a portion covering the fourth bridge plate (04); The flexible circuit board of the second bridge plate (02) has a portion that covers the rigid circuit board (2) of the third bridge plate (03).

13. A server, characterized in that: include: Chassis (10); A switching board (9) is provided in the chassis (10); A multi-processor interconnection structure (002) is the multi-processor interconnection structure (002) according to any one of claims 9 to 12, wherein the multi-processor interconnection structure (002) is connected to the switch board (9).

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