Bridging board structure, multiprocessor interconnection structure and server

Abstract

The invention provides a bridging board structure, a multiprocessor interconnection structure and a server, and relates to the field of servers, the bridging board structure is used for realizing signal connection between any two of a plurality of processors arranged in parallel, and the bridging board structure comprises a hard circuit board; the connector is arranged on the hard circuit board, and the connector is used for being connected with the processor in an inserted mode to achieve signal connection; the flexible circuit board is connected with the two hard circuit boards so as to realize signal connection between the connectors corresponding to the two hard circuit boards; the bending degree of the arch structure of the flexible circuit board can be adjusted so as to change the transverse distance and / or the longitudinal height difference between the connectors corresponding to the two hard circuit boards. The elastic space is provided through the flexible circuit board, so that the transverse distance and the longitudinal height difference between the connectors corresponding to the two hard circuit boards are adjustable, the requirement for absorbing dimensional chain tolerance when a plurality of processors are interconnected is met, and the problem that connection between the connectors fails or is not firm due to the dimensional chain tolerance is solved.

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 a technology used to provide efficient communication between multiple processors. It can be applied to the increasingly high processing requirements of servers for data storage and processing speed. For example, GPU (Graphics Processing Unit) interconnect technology is a high-speed interconnect technology used to provide efficient communication and collaboration between multiple GPUs.

[0003] Specifically, when in use, multiple GPUs are interconnected into groups and then installed in a chassis. The dimensional chain is long, and the adjacent spacings are inconsistent after the manufacturing tolerance and assembly tolerance are accumulated when multiple GPUs are interconnected. If they are directly connected to the gold fingers of the GPU through an interconnected hard circuit board, the structure is simple but cannot absorb the dimensional chain tolerance. When the server is subjected to vibration and impact tests, 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 technical personnel in this field need to solve. 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] In order to solve the above technical problems, an embodiment of the present invention provides a bridge board structure for realizing signal connection between any two of a plurality of parallel processors, wherein the bridge board structure comprises:

[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 can be adjusted 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 arch edge A of the arch 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 bridge plate structure includes a second bridge plate and a third bridge plate, and the flexible circuit board included in the second bridge 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 the end of the second flexible circuit board and the width of the end 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 that are spaced apart, the arched structure of the second flexible circuit board is arched over the upper side of the hard 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 hard circuit board corresponding to the second bridge board.

[0018] On the other hand, it also 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 protection sheet are both arranged on the lower side of the rigid circuit board, and the insulating protection sheet is arranged to avoid the connector.

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

[0022] It also includes a fastener, and the lifting structure is connected to or disconnected from the rigid circuit board through the fastener to achieve switching between a locking state and a lifting state of the lifting structure.

[0023] On the other hand, the lifting structure is an arc-shaped structure provided by the drawstring, 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 a side of the drawstring close to the rigid circuit board;

[0025] The size of the end of the drawstring is smaller than the size of the middle of the drawstring, and the intersection of the end of the drawstring and the middle of the drawstring forms a bonding line, and the end of the drawstring is bonded to the bonding line.

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

[0027] processor;

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

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

[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 processors spaced apart 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 processor includes 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 covered by 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 also provides a server, comprising:

[0039] Chassis;

[0040] A switching board is arranged 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 scheme that the bridge board structure provided by the present invention specifically includes a hard circuit board, a connector, and a flexible circuit board. The connector is arranged on the hard circuit board and is used to be plugged into the processor to realize signal connection, and the flexible circuit board connects the two hard circuit boards to realize the signal connection between the connectors corresponding to the two hard circuit boards, that is, to realize the signal connection between the processors corresponding to the two connectors, and realize the 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 carried out, specifically by changing the lateral spacing or longitudinal height difference between the connectors corresponding to the two hard circuit boards to provide an adjustable space; when multiple parallel processors need to be interconnected, the use of a flexible circuit board provides an elastic space, so that the connection between any two connectors has an adjustable space to absorb the dimensional chain tolerance formed by multiple processors, to ensure reliable and effective signal connection between multiple connectors, and to avoid hardware damage.

[0043] The beneficial effects of the present invention are as follows: by providing flexible 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 tolerance of the dimensional chain when multiple processors are interconnected, avoiding problems such as failure or unreliable connection between connectors due to the tolerance of the dimensional chain, and avoiding damage to the hardware. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces 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 paying 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] Fig. 9 This is a schematic diagram of the operating state of the fourth bridge plate provided by the present invention.

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

[0055] Fig.11 for Fig.10 Exploded diagram.

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

[0057] Figure 1-Figure 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-hard circuit board; 3-connector; 4-pull belt; 5-insulation protection sheet; 6-fastener; 7-front beam; 8-rear beam; 9-switch board; 10-chassis;

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

[0062] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0063] The core of the present invention is to provide a bridge board structure, which provides elastic space through a flexible circuit board, so that 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 dimension chain tolerance when multiple processors are interconnected, avoid the problem of failure or unreliability of the connection between the connectors due to the dimension chain tolerance, and avoid damage to the hardware. Another core of the present invention is to provide a multi-processor interconnection structure and a server including the above-mentioned bridge board structure.

[0064] The bridge board structure provided by the present invention is used to realize the signal connection between any two of the multiple parallel processors, and the signal transmission between the two processors is realized through the bridge board structure. Any two of the multiple parallel processors can specifically refer to two adjacent ones or two spaced ones. The two spaced ones here refer to other processors between the two processors. The signal transmission between the multiple processors is satisfied through the bridge board structure. For example, if three processors are set, the three processors need to realize signal interconnection between each other, which is specifically realized through the bridge board structure.

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

[0066] The bridge board structure specifically includes a hard 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 arranged on the rigid circuit board 2, and there is a signal connection between the two. Specifically, the connector 3 is used to be plugged into the processor to form a bridge board structure as a whole and signal transmission between the processor. For any two of the multiple parallel processors, two rigid circuit boards 2 are correspondingly arranged, and a connector 3 is arranged 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 partial position of the flexible circuit board, such as in the middle of the flexible circuit board, at the end of the flexible circuit board, or in 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 bending degree of the arched structure 1 is adjustable, and the bending degree adjustment here 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 lateral spacing and / or longitudinal height difference between the connectors 3 corresponding to the two rigid circuit boards 2. Fig.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 a specific implementation as an example, by bringing the two ends of the arch structure 1 relatively close or far apart in the lateral direction, the end of the arch structure 1 is connected to the rigid circuit board 2, so as to adjust the lateral spacing between the two rigid circuit boards 2, and also adjust the lateral spacing between the connectors 3 corresponding to the two rigid circuit boards 2. When multiple processors are interconnected, the degree of bending of the arch structure 1 can be appropriately adjusted according to the installation conditions of the actual processors and the corresponding connectors 3 of the rigid circuit board 2, so that a reliable and effective connection is obtained between the corresponding two processors. When the lateral spacing between the two processors is different due to the accumulation of manufacturing tolerance and assembly tolerance, the use of the arch structure 1 of the flexible circuit board can effectively absorb the accumulated tolerance, ensure the reliability of the interconnection of multiple processors, and avoid damage to the hardware.

[0072] Taking another specific implementation as an example, at least one end of the arch structure 1 moves longitudinally, and the degree of curvature of the arch structure 1 also changes at the same time. When multiple processors are interconnected, the end of the arch structure 1 can be moved longitudinally according to the installation conditions of the actual processor and the corresponding connector 3 of the rigid circuit board 2 to ensure reliable and effective connection between the processor and the corresponding connector 3. When the longitudinal spacing between two processors is different due to the accumulation of manufacturing tolerance and assembly tolerance, the use of the arch structure 1 of the flexible circuit board can effectively absorb the accumulated tolerance, ensure the reliability of the interconnection of multiple processors, and avoid damage to the hardware.

[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 GPU cards in the form of PCIE (peripheral component interconnect express, a high-speed serial computer expansion bus standard) as an example, northbound interconnection is to build a communication network between servers through the northbound interconnection domain of the GPU, also known as inter-machine interconnection. High-speed communication between GPUs is achieved through northbound interconnection to support application scenarios such as large-scale parallel computing and distributed training. The above-mentioned bridge board structure ensures the reliable connection of multiple GPU cards, avoids the structural problem that the hard circuit board cannot absorb the dimensional chain tolerance when bridging the northbound interconnection of the GPU card, and avoids damage to the hard circuit board, GPU card and even the switch board during vibration and impact tests of the server.

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

[0076] On the basis of the above-mentioned 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 by providing 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, wherein 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 the opening 101 must fully consider the reliability of the transmission signal of the flexible circuit board as a whole, and should not be set too large, just to meet the use requirements. In addition, the size of the opening 101 must also consider the avoidance of screws when connecting the bridge board structure and the processor. The screws can be screwed in from the position of the opening 101 to fix the processor, the flexible circuit board, and the hard circuit board 2.

[0079] In addition, if the processor, flexible circuit board, and hard 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 between the flexible circuit board, the hard circuit board 2, and the processor can be achieved. 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 hard 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 hard circuit board 2, the flexibility of adjusting 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, the opening 101 extends from the periphery of the arch structure 1 to the two ends of the flexible circuit board to maximize the area of ​​the opening 101 and improve the flexibility of adjustment. It should be noted that the opening 101 is a hole position of a closed structure set on the flexible circuit board. The closed structure here refers to a closed shape such as a circle or a square connected end to end. Even if the long side dimension of the opening 101 is larger than the dimension of the arch edge A of the arch structure 1, in this case the opening 101 will not run through the entire length direction of the flexible circuit board, thereby ensuring the performance of the flexible circuit board in signal transmission.

[0083] On the basis of setting the opening 101 in the flexible circuit board, multiple openings may 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 of the first bridge board 01, and a hard circuit board 2 connecting two ends of the first flexible circuit board. The first bridge board 01 specifically includes a first flexible circuit board 011, two hard circuit boards 2, and two connectors 3, and each hard circuit board 2 corresponds to a connector 3 for connecting a processor.

[0085] The first flexible circuit board 011 is provided with an opening 101, and the width dimension of the end of the first flexible circuit board 011 is equal to the width dimension of the connector 3. Figure 2 , Fig.10 As shown, the first bridge plate 01 has strong adjustability and can be used to form a connection between processors at a long distance, where the long distance here is compared to the distance between two adjacent connectors. By setting an opening 101 in the middle of the first flexible circuit board 011, the softness of the first flexible circuit board 011 is increased, so that the arch structure 1 on the first flexible circuit board 011 can have a large variation space. According to the position of the processor and the corresponding connector 3, the bending degree of the arch structure 1 can be changed to absorb the dimensional chain tolerance generated by multiple processors, thereby ensuring a reliable connection between the processor and the corresponding connector 3 and avoiding 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. 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 both ends of the second flexible circuit board 021, and two connectors 3 are arranged 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 both ends of the third flexible circuit board 031, and two connectors 3 are arranged in a one-to-one correspondence with the rigid circuit boards 2.

[0088] First of all, it should be noted that the second flexible circuit board 021 and the third flexible circuit board 031 both have an arch structure 1, which is a structure for absorbing the tolerance of the dimension chain when the processors are interconnected. Specifically, the arch structures 1 of the two can be set to be the same or different, without limitation. Through the joint action of the second bridge board 02, the third bridge board 03 and the first bridge board 01, any two of the multiple processors are connected through the second bridge board 02 or the third bridge board 03 or the first bridge board 01, so as to be suitable for signal transmission between the multiple processors and realize reliable interconnection between the multiple processors.

[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 board 02 and the third bridge board 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 ), the relatively wider side is 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 may be equal or unequal. If the width dimensions of the ends are set equal as an example, under the premise that the models of multiple processors are the same and the corresponding sockets are also consistent, the sockets here are the sockets for signal connection of the connector 3. When the second flexible circuit board 021 and the third flexible circuit board 031 are used for the sockets at the same position on multiple processors at the same time, the second flexible circuit board 021 and the third flexible circuit board 031 can be staggered without interference, and the size of the flexible circuit board can be reduced without affecting signal transmission, so that when any two of the multiple processors are connected through the second bridge board 02 or the third bridge board 03, the working space can be reduced, and the reliable connection between the connector 3 and the processor socket on the hard circuit board 2 is not affected. In addition, the second flexible circuit board 021 and the third flexible circuit board 031 can be staggered so that the sockets at the same position on multiple processors can be effectively connected, thereby ensuring signal transmission between 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 processors arranged at intervals, the arch structure 1 of the second flexible circuit board 021 is arched over the upper side of the hard circuit board 2 corresponding to the third bridge board 03, and the arch structure 1 of the third flexible circuit board 031 is arched over the upper side of the hard circuit board 2 corresponding to the second bridge board 02.

[0091] Please refer to Fig.10 , Fig.11 , Figure 4 , Figure 6Specifically, when in use, the second bridge board 02 and the third bridge board 03 are used to connect the 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 realize signal transmission and have a certain degree of softness for easy adjustment. Therefore, by limiting the end width dimension of the second flexible circuit board 021 and the end width dimension 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 dimension of the second flexible circuit board 021 and the end width dimension of the third flexible circuit board 031 is smaller than the size of the connector 3, the arch structure 1 of the second flexible circuit board 021 is arched on the upper side of the hard circuit board 2 corresponding to the third bridge board 03, and the arch structure 1 of the third flexible circuit board 031 is arched on the upper side of the hard circuit board 2 corresponding to the second bridge board 02, and the operations of the second bridge board 02 and the third bridge board 03 do not affect each other, thereby ensuring the flexible adjustability of the two processors and the corresponding connector 3 set at intervals when connected.

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

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

[0094] The fourth bridge board 04 is specifically suitable for connecting two adjacent processors. This is based on the fact that the distance between the two adjacent processors is small. If a flexible circuit board is set, it cannot have sufficient flexibility and cannot achieve effective adjustment. In this case, the flexible circuit board is directly abandoned, 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, eight, etc., even if the connection between two adjacent processors through the fourth bridge board 04 cannot be adjusted according to the installation situation, the other two processors set at intervals can still achieve an adjustable effect through the first bridge board 01, the second bridge board 02, and the third bridge board 03, and it does not affect the effect of the entire bridge board structure to meet the absorption of the dimensional chain tolerance.

[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 arch structure 1 of the second flexible circuit board 021 is arched on the upper side of the hard circuit board 2 corresponding to the third bridge board 03, and the arch structure 1 of the third flexible circuit board 031 is arched on the upper side of the hard 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 second bridge board 02 and the first bridge board 01 are first installed with the hard circuit board 2 and the connector 3 at the same end, and then the hard 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 hard circuit board 2 and the processor;

[0097] The connector 3 and the insulating protection sheet 5 are both arranged on the lower side of the rigid circuit board 2 , and the insulating protection sheet 5 is arranged to avoid the connector 3 .

[0098] Please refer to Figures 2 to 9 The first bridge board 01, the second bridge board 02, the third bridge board 03 and the fourth bridge board 04 all include an insulating protective sheet 5, which can be a Mylar sheet or other structural member with an insulating coating or its own insulating material. The insulating protective sheet 5 is provided with a fastening hole 51 for connection, and a screw passes through the fastening hole 51 to connect the insulating protective sheet 5 to the lower side 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 arranged and the processor. The specific protection effect is to prevent the rigid circuit board 2 from directly contacting the metal on the surface of the processor to cause a short circuit or being rubbed by the metal on the surface of the processor to damage the rigid circuit board.

[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 a 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, on the basis of setting two rigid circuit boards 2, one or two drawstrings 4 are corresponding, that is, the two rigid circuit boards 2 are respectively connected to one drawstring 4, or one of the two rigid circuit boards 2 is connected to one drawstring 4; similarly, for the fourth bridge plate 04, on the basis of setting one rigid circuit board 2, one or two drawstrings 4 are corresponding, that is, one rigid circuit board 2 is provided with one or two drawstrings 4.

[0102] Taking the example that each of the rigid circuit boards 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 boards 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 boards and the processors.

[0103] The bridge plate structure also includes a fastener 6, and the lifting structure is connected or disconnected with the rigid circuit board 2 through the fastener 6 to achieve the switching between the locking state and the lifting state of the lifting structure. The lifting structure of the pull belt 4 is in a locked state when the bridge plate is in the working state, that is, the lifting structure is locked on the rigid circuit board 2 through the fastener 6; the lifting structure of the pull belt 4 forms an arch when the bridge plate is in the assembled state, which is convenient for the operator to insert his fingers into the arch to lift the corresponding bridge plate.

[0104] The fastener 6 may be a screw or other specific embodiment, such as a captive screw, to ensure reliable locking of the lifting structure when the bridge plate is in the working state.

[0105] On the basis of any of the above embodiments, the pulling structure is an arc structure 41 provided on the pull belt 4 , a long opening 411 is provided in the middle of the arc 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 lifting structure is an arc structure 41 arranged on the pull belt 4, and a long opening 411 is arranged in the middle of the arc structure 41. The long opening 411 is specifically a hole position for facilitating the passage of the fastener 6. The fastener 6 passes through the long opening 411 and is fixed on the rigid circuit board 2, so that the corresponding lifting structure on the rigid circuit board 2 is locked, corresponding to the working state of the bridge plate, and 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 opening 411 facilitates the fastener 6 to pass through to lock the lifting structure. When the fastener 6 passes through the long 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 position of the long opening 411 , and the long opening 411 may be set at the middle or end of the drawstring 4 , and may be specifically set to match the position of the locking hole on the rigid circuit board 2 .

[0109] On the basis of any of the above embodiments, a through hole is provided on the rigid circuit board 2, and the end of the draw tape 4 passes through the through hole and is attached to the side of the draw tape 4 close to the rigid circuit board 2, and the side of the draw tape 4 close 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, and the two ends of the draw tape 4 pass through the through holes and 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 drawstring 4 is smaller than the middle size of the drawstring 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 drawstring 4 and ensure the reliability of the pull structure of the drawstring 4.

[0111] A step is formed at the intersection of the end of the draw tape 4 and the middle of the draw tape 4, and the step is used to form a bonding line 42. The end of the draw tape 4 passes through the hole and is bonded to the bonding 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 drawstring 4, the structural strength of the drawstring 4 is increased, the operational reliability is improved, 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 drawstring 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 interconnection structure including the bridge board structure disclosed in the above-mentioned embodiment, and the multi-processor interconnection structure includes:

[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 connects two processors set at an interval. There is at least one processor set between the two processors set at an interval. For example, among the six processors set in parallel, the first and third, the second and fifth are two processors set at an interval, 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 all GPUs are bridged by a hard circuit board, thereby avoiding hardware damage.

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

[0120] Two adjacent processors are connected via a fixed bridge board to achieve signal transmission, and two processors arranged at an interval are connected via an adjustable bridge board to achieve signal transmission.

[0121] The adjustable bridge board is a bridge board with an arched structure 1, which can appropriately adjust the lateral spacing and / or longitudinal height difference between the connectors 3 corresponding to the two rigid circuit boards 2 according to the alignment of the corresponding processors and the connectors 3 on the rigid circuit board 2. This situation is suitable for processors arranged at intervals, where the intervals between the processors arranged at intervals are relatively far apart, and the softness of the flexible circuit board can be used to provide adjustability to absorb the dimensional chain tolerance generated when multiple processors are to be interconnected.

[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 and 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, it can rely on the adjustable bridge board.

[0123] On the basis of 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 processor includes a first processor 05, a second processor 06, a third processor 07, and a fourth processor 08 arranged in parallel, and 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] On the basis of any of the above embodiments, the flexible circuit board of the first bridge board 01 has a portion covered by the fourth bridge board 04;

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

[0130] Please refer to Figure 3 , Fig.10 , Fig.11 When connecting the processor and the bridge board, the flexible circuit board corresponding to the first bridge board 01, that is, the first flexible circuit board 011, is a whole-piece flexible circuit board. The whole-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 can be provided with a space for setting the fourth bridge board 04. Specifically, a fourth bridge board 04 connecting the second processor 06 and the third processor 07 is arranged 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, and at the same time meet the plug-in requirements of the four sockets arranged in parallel on the four processors, making full use of the available space.

[0131] When the processor and the bridge board are connected, the flexible circuit board of the second bridge board 02 has a portion of the hard circuit board 2 covered by the third bridge board 03. The flexible circuit boards on the second bridge board 02 and the third bridge board 03 are approximately half-piece structures. The half-piece structure here specifically refers to the width of the flexible circuit board being approximately equal to half of the width of the connector 3, specifically slightly smaller than half of the width of the connector 3, to avoid interference between the second flexible circuit board 021 of the second bridge board 02 and the third flexible circuit board 031 of the third bridge board 03. Similarly, the plug-in requirements of the four sockets arranged in parallel on the four processors are met at the same time, making full use of the available space. It should be noted that the four sockets arranged in parallel here and the four sockets in the upper section are sockets of different columns.

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

[0133] Chassis 10;

[0134] The switching board 9 is arranged 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, a card tail fixing bracket and a baffle are assembled on the processor, and multiple processors are assembled into the chassis 10, wherein the card tail fixing brackets of multiple processors are installed on the front crossbeam 7, and the baffles of multiple processors are installed on the rear crossbeam 8. In addition, the bottoms of the multiple processors are connected to the switch board 9 for signal.

[0138] For further reference, Fig.11 The first bridge board 01, the second bridge board 02, the third bridge board 03, and the fourth bridge board 04 are installed 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 is a detailed introduction to a bridge board structure, a multi-processor interconnection structure and a 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 used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified, and these 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 bridge plate structure comprises: Rigid circuit board (2); A connector (3) is provided on the hard 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 bending 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).

2. The bridge plate structure according to claim 1, characterized in that: 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 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 bridge plate structure according to claim 2, characterized in that: 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); the first flexible circuit board (011) is provided with the opening (101); and the width dimension of the end of the first flexible circuit board (011) is equal to the width dimension of the connector (3).

4. The bridge plate structure according to claim 1, characterized in that: The bridging plate structure comprises a second bridging plate (02) and a third bridging plate (03); The flexible circuit board of the second bridging board (02) is a second flexible circuit board (021); The flexible circuit board of the third bridge board (03) is a third flexible circuit board (031); 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 claim 4, characterized in that: The second bridge board (02) and the third bridge board (03) are both used to connect the processors that are spaced apart, 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).

6. The bridge plate structure according to claim 1, characterized in that: It also comprises a fourth bridge board (04), the fourth bridge board (04) comprising the hard circuit board (2), two ends of the hard circuit board (2) being provided with two connectors (3) for signal connection between two adjacent processors.

7. The bridge plate structure according to any one of claims 1 to 6, characterized in that: It also includes an insulating protective sheet (5) for forming protection between the hard 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).

8. The bridge plate structure according to claim 7, characterized in that: It also comprises a drawstring (4), the drawstring (4) being arranged on the rigid circuit board (2), the drawstring (4) being provided with a lifting structure, the lifting structure being used to lift the rigid circuit board (2) corresponding thereto; It also comprises a fastener (6), through which the lifting structure is connected to or disconnected from the hard circuit board (2), so as to achieve switching between a locking state and a lifting state of the lifting structure.

9. The bridge plate structure according to claim 8, 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 hard circuit board (2).

10. The bridge plate structure according to claim 9, 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 size of the end of the drawstring (4) is smaller than the size of the middle of the drawstring (4), and the intersection 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).

11. A multi-processor interconnect structure, characterized in that: include: processor; A bridging plate structure (001), which is the bridging plate structure (001) according to any one of claims 1 to 10; The bridge plate structure (001) 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.

12. The multi-processor interconnect structure according to claim 11, characterized in that: 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 processors spaced apart are connected via the adjustable bridge plate to achieve signal transmission.

13. The multi-processor interconnect structure according to claim 12, characterized in that: 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 processor comprises a first processor (05), a second processor (06), a third processor (07), and a fourth processor (08) which are 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).

14. The multi-processor interconnect structure according to claim 13, characterized in that: The flexible circuit board of the first bridge board (01) has a portion covering the fourth bridge board (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).

15. A server, characterized in that: include: Chassis (10); A switching board (9) is arranged in the chassis (10); The multi-processor interconnection structure (002) is the multi-processor interconnection structure (002) according to any one of claims 11 to 14, and the multi-processor interconnection structure (002) is connected to the switch board (9).

Images