Circuit board assembly and electronic equipment

Abstract

The utility model discloses a circuit board assembly and electronic equipment, and belongs to the technical field of communication equipment. The electronic equipment comprises a circuit board assembly, the circuit board assembly comprises a main board and at least two connectors arranged side by side, each connector is installed on the main board, and the sizes of the at least two connectors in the thickness direction of the main board are different; at least part of the main board support is opposite to the main board, the main board support comprises a main body part and a metal reinforcing sheet, the main body part comprises at least two sheet bodies which are sequentially arranged in the circumferential direction of the main board support, the sheet bodies comprise the first sheet body, the first sheet body presses the connectors to the main board, the metal reinforcing sheet is connected with the first sheet body, and the second sheet body presses the connectors to the main board. The metal reinforcing sheet is arranged on the first sheet body and is stacked on one side, away from the connectors, of the first sheet body or one side, facing the connectors, of the first sheet body, and the shapes of the first sheet body and the metal reinforcing sheet are matched with the sizes of the connectors in the thickness direction of the mainboard.

Description

Technical Field

[0001] This application belongs to the field of communication equipment technology, specifically relating to a circuit board assembly and an electronic device. Background Technology

[0002] With the advancement of technology, electronic devices such as smartphones and tablets have become integrated into people's lives and indispensable elements in their daily work, study, and entertainment. Against this backdrop, people have placed higher demands on the portability of electronic devices.

[0003] The core component of an electronic device is the motherboard, which typically houses electronic components such as connectors. To protect the motherboard and electronic components, electronic devices generally have a motherboard bracket to block external impacts and ensure the stable operation of the motherboard and electronic components.

[0004] However, current motherboard brackets are often quite heavy, resulting in poor portability of electronic devices. Utility Model Content

[0005] The purpose of this application is to provide a circuit board assembly and electronic device that can solve the problem of poor portability of motherboard brackets in related technologies.

[0006] In a first aspect, embodiments of this application provide a circuit board assembly, including:

[0007] A motherboard and at least two connectors arranged side by side, each connector being mounted on the motherboard, and the at least two connectors having different dimensions in the thickness direction of the motherboard;

[0008] A motherboard bracket, at least a portion of which is disposed opposite to the motherboard, the motherboard bracket including a main body and a metal reinforcing plate, the main body including at least two plates arranged sequentially along the circumference of the motherboard bracket, including a first plate, the first plate pressing each of the connectors toward the motherboard, the metal reinforcing plate being connected to the first plate and stacked on the side of the first plate away from the connectors or the side of the first plate facing the connectors, and the shapes of the first plate and the metal reinforcing plate being adapted to the dimensions of each connector in the thickness direction of the motherboard.

[0009] In related technologies, motherboard brackets include, for example, a main body, which is a one-piece structure, such as being stamped from the same metal sheet. In actual use, different parts of the main body are subjected to different forces. In order to ensure that all parts of the main body can meet the force requirements, the thickness of the main body is often designed according to the part of the main body that is subjected to the greatest force. This makes the main body heavier overall, resulting in a heavier motherboard bracket, which in turn leads to poor portability of the motherboard bracket.

[0010] In this embodiment, the motherboard bracket includes a main body and metal reinforcing plates. A first piece of the main body presses each connector against the motherboard. The metal reinforcing plates are connected to the first piece and are stacked on either the side of the first piece facing away from the connectors or the side of the first piece facing the connectors. In other words, using the solution of this embodiment, the first piece and the metal reinforcing plates jointly bear the force applied by the connectors. This allows for a smaller thickness of the first piece, reducing the weight of the main body and improving the portability of the motherboard bracket.

[0011] Furthermore, the metal reinforcing sheet has high strength, so the thickness of the metal reinforcing sheet can be designed to be smaller to meet the corresponding strength requirements. This helps to reduce the size of the motherboard bracket, which in turn is conducive to the development of thinner and lighter electronic devices.

[0012] Secondly, this application provides an electronic device that includes the circuit board assembly described above. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the motherboard bracket disclosed in an embodiment of this application;

[0014] Figure 2 for Figure 1 Partial structural diagram;

[0015] Figure 3 This is a schematic diagram illustrating the cooperation between the motherboard bracket, motherboard, and connector disclosed in an embodiment of this application;

[0016] Figure 4 This is one of the schematic diagrams showing the assembly method of the first sheet and the metal reinforcing sheet disclosed in the embodiments of this application;

[0017] Figure 5 This is a second schematic diagram illustrating the assembly method of the first sheet and the metal reinforcing sheet disclosed in the embodiments of this application;

[0018] Figure 6 This is a schematic diagram illustrating the arrangement of the first and second positioning holes as disclosed in an embodiment of this application.

[0019] Figure 7 This is the third schematic diagram illustrating the assembly method of the first sheet and the metal reinforcing sheet disclosed in the embodiments of this application;

[0020] Figure 8 for Figure 7 AA section view;

[0021] Figure 9 for Figure 8 Enlarged view of Part I;

[0022] Figure 10This is a schematic diagram illustrating the engagement method between the metal reinforcing sheet and the first plastic part as disclosed in an embodiment of this application.

[0023] Figure 11 for Figure 10 A partial perspective view;

[0024] Figure 12 for Figure 10 BB section view;

[0025] Figure 13 This is a schematic diagram illustrating the arrangement of the plastic support ribs disclosed in the embodiments of this application;

[0026] Figure 14 This is a partial structural schematic diagram of the motherboard bracket disclosed in an embodiment of this application;

[0027] Figure 15 for Figure 14 CC section view;

[0028] Figure 16 This is a schematic diagram of the structure of the notch disclosed in the embodiments of this application;

[0029] Figure 17 This is a schematic diagram illustrating the fit between the notch and the injection mold as disclosed in an embodiment of this application;

[0030] Figure 18 This is a schematic diagram of the flange structure disclosed in the embodiments of this application;

[0031] Figure 19 This is a schematic diagram illustrating the assembly method of the second plastic part, the third plastic part, the main body part, and the flange disclosed in the embodiments of this application;

[0032] Figure 20 This is a schematic diagram illustrating the assembly method of the second plastic part, the third plastic part, the third plastic connecting part, and the plastic support rib disclosed in the embodiments of this application;

[0033] Figure 21 This is a partial perspective view of the motherboard bracket disclosed in an embodiment of this application;

[0034] Figure 22 This is a schematic diagram of the structure of the first plastic part disclosed in the embodiments of this application;

[0035] Figure 23 This is a schematic diagram of the main body structure disclosed in the embodiments of this application;

[0036] Figure 24 This is a schematic diagram of the structure of the plastic reinforcing member disclosed in the embodiments of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100-Main body, 110-First piece, 111-First positioning hole, 112-First sub-part, 113-First inclined part, 114-Second sub-part, 115-First through hole, 116-Second opening, 120-Reinforcing flange, 130-Second through hole, 140-First connecting part, 141-First mounting hole, 150-Second connecting part, 151-Second mounting hole, 160-Second piece, 170-Third piece, 180-Fourth piece;

[0039] 200-Metal reinforcing plate, 210-Second positioning hole, 220-First section, 230-Second inclined section, 240-Second section, 250-Recessed section, 260-Notch, 270-First opening;

[0040] 300-Plastic reinforcing part, 310-First plastic part, 311-Cavity, 320-First plastic connecting part, 330-Plastic support rib, 340-Second plastic connecting part, 350-Second plastic part, 360-Third plastic connecting part, 370-Third plastic part;

[0041] 400-Motherboard;

[0042] 500-Connector;

[0043] 600 - Injection mold;

[0044] 700-Fault tolerance space. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0046] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0047] The circuit board assembly and electronic device provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0048] Please refer to Figures 1 to 24 As shown, this application embodiment provides a circuit board assembly, including: a motherboard 400, a motherboard bracket, and at least two connectors 500 arranged side by side. The exact number of connectors 500 depends on actual needs, and is not limited in this application embodiment.

[0049] Specifically, each connector 500 is mounted on the motherboard 400, and at least two connectors 500 have different dimensions in the thickness direction of the motherboard 400, for example, in the thickness direction of the motherboard 400. Figure 3 The direction indicated by the middle arrow E. Optionally, the dimensions of each connector 500 in the thickness direction of the motherboard 400 may all be different, or some connectors 500 may have different dimensions in the thickness direction of the motherboard 400, while other connectors 500 may have the same dimensions in the thickness direction of the motherboard 400.

[0050] At least a portion of the motherboard bracket is disposed opposite to the motherboard 400. The motherboard bracket is used to protect the motherboard 400 and electronic components such as connectors 500 mounted on the motherboard bracket. Optionally, the motherboard bracket may be disposed entirely opposite to the motherboard 400, or only a portion of the motherboard bracket may be disposed opposite to the motherboard 400.

[0051] The motherboard bracket includes a main body 100 and a metal reinforcing plate 200. The main body 100 includes at least two plates arranged sequentially along the circumference of the motherboard bracket, including a first plate 110, which presses each connector 500 against the motherboard 400.

[0052] The specific number of slices depends on actual needs; for details, please refer to [reference needed]. Figure 23 As shown, the main body 100 includes, for example, a second piece 160, a third piece 170, and a fourth piece 180, in addition to the first piece 110. The first piece 110, the second piece 160, and the third piece 170 are, for example, a single integrated structure, and the first piece 110, the second piece 160, and the third piece 170 are generally U-shaped. The fourth piece 180 is independently disposed from the first piece 110, the second piece 160, and the third piece 170; that is, the main body 100 is a split structure. Of course, in other embodiments, the main body 100 may also be a single integrated structure.

[0053] The connector 500 is, for example, a board-to-board connector. Optionally, an elastic buffer is provided between the first piece 110 and the connector 500. The elastic buffer can buffer the force between the first piece 110 and the connector 500 to prevent excessive local stress on the first piece 110 and the connector 500. Specifically, the elastic buffer is, for example, cushioning foam. In addition, the main body 100 is made of metal, for example, a steel sheet or an aluminum sheet, and the main body 100 is, for example, stamped from a single sheet.

[0054] The metal reinforcing plate 200 is connected to the first plate 110. Optionally, the metal reinforcing plate 200 and the first plate 110 are connected by a non-removable method, such as welding or adhesive. Of course, the metal reinforcing plate 200 and the first plate 110 can also be connected by a detachable method, such as threaded connection or snap-fit ​​connection. In addition, the metal reinforcing plate 200 is also, for example, a steel sheet or an aluminum sheet, and the material of the metal reinforcing plate 200 can be the same as or different from that of the main body 100, depending on the actual needs of the design. This application embodiment does not impose any restrictions on this.

[0055] The metal reinforcing sheet 200 is stacked on the side of the first sheet 110 away from the connector 500 or on the side of the first sheet 110 facing the connector 500. That is, the metal reinforcing sheet 200, the first sheet 110, the connector 500 and the motherboard 400 can be arranged sequentially along the thickness direction of the motherboard 400, or the first sheet 110, the metal reinforcing sheet 200, the connector 500 and the motherboard 400 can be arranged sequentially along the thickness direction of the motherboard, and the shapes of the first sheet 110 and the metal reinforcing sheet 200 are adapted to the dimensions of each connector 500 in the thickness direction of the motherboard 400.

[0056] In related technologies, motherboard brackets include, for example, a main body, which is a one-piece structure, such as being stamped from the same sheet. In actual use, different parts of the main body are subjected to different forces. In order to ensure that all parts of the main body can meet the force requirements, the thickness of the main body is often designed according to the part of the main body that is subjected to the greatest force. This makes the main body heavier overall, resulting in a heavier motherboard bracket, which in turn leads to poor portability of the motherboard bracket.

[0057] In this embodiment, the motherboard bracket includes a main body 100 and a metal reinforcing sheet 200. A first piece 110 of the main body 100 presses each connector 500 against the motherboard 400. The metal reinforcing sheet 200 is connected to the first piece 110 and is stacked on either the side of the first piece 110 facing away from the connector 500 or the side of the first piece 110 facing the connector 500. In other words, using the solution of this embodiment, the first piece 110 and the metal reinforcing sheet 200 jointly bear the force applied by the connector 500. This allows for a smaller thickness of the first piece 110, reducing the weight of the main body 100 and improving the portability of the motherboard bracket.

[0058] Furthermore, the metal reinforcing sheet 200 has high strength, so the thickness of the metal reinforcing sheet 200 can be designed to be smaller to meet the corresponding strength requirements. This helps to reduce the size of the motherboard bracket, which is conducive to the development of thinner and lighter electronic devices.

[0059] In another embodiment, reference Figure 6 As shown, both the first sheet 110 and the metal reinforcing sheet 200 are strip-shaped structures, and their length directions are the same. For example, the length directions of the first sheet 110 and the metal reinforcing sheet 200 are both... Figure 9 The direction indicated by the middle arrow L.

[0060] The first piece 110 is provided with at least two first positioning holes 111 spaced apart along its own length direction, and the metal reinforcing piece 200 is provided with at least two second positioning holes 210 spaced apart along its own length direction. The first positioning holes 111 and the second positioning holes 210 correspond one-to-one, and the corresponding first positioning holes 111 and second positioning holes 210 are used for positioning and cooperating with the same positioning part of the positioning tool.

[0061] In this embodiment, by positioning the first positioning hole 111 and the second positioning hole 210 with the positioning part of the positioning tool, the relative positions of the first piece 110 and the metal reinforcing piece 200 can be positioned more accurately, thereby improving the assembly accuracy of the first piece 110 and the metal reinforcing piece 200. Furthermore, in this embodiment, there are at least two of each of the first positioning holes 111 and the second positioning holes 210. This allows the positioning tool to engage with multiple different positions of the first piece 110 and the metal reinforcing piece 200, further improving the assembly accuracy of the first piece 110 and the metal reinforcing piece 200.

[0062] In actual use, for example, one end of the positioning part can be passed through the corresponding first positioning hole 111 and second positioning hole 210 in sequence, and then the first piece 110 and the metal reinforcing piece 200 can be pressed together to achieve the positioning of the first piece 110 and the metal reinforcing piece 200.

[0063] Optionally, the positioning part may be, for example, a positioning post, and the diameters of the first positioning hole 111 and the second positioning hole 210 may be equal to the diameter of the positioning post, so as to improve the assembly accuracy of the first piece 110 and the metal reinforcing piece 200.

[0064] Specifically, the first piece 110 and the metal reinforcing piece 200 are connected, for example, by welding, and the positioning tool is, for example, a welding fixture. In addition, each of the first positioning holes 111 is arranged at intervals along the length direction of the first piece 110, and each of the second positioning holes 210 is arranged at intervals along the length direction of the metal reinforcing piece 200.

[0065] In other alternative embodiments, the first sheet 110 may not have the first positioning hole 111, and correspondingly, the metal reinforcing sheet 200 may not have the second positioning hole 210. Alternatively, the number of the first positioning hole 111 and the second positioning hole 210 may both be one.

[0066] In another embodiment, reference Figures 6 to 9 As shown, the first sheet 110 and the metal reinforcing sheet 200 are both strip-shaped structures, and their length directions are the same. The first sheet 110 includes, for example, a first sub-part 112, a first inclined part 113, and a second sub-part 114 connected sequentially along its own length direction, so that the first sub-part 112 and the second sub-part 114 can be adapted to connectors 500 of different sizes. It should be noted that the size here refers to the size of the connector 500 in the thickness direction of the motherboard 400.

[0067] The metal reinforcing sheet 200 includes, for example, a first portion 220, a second inclined portion 230, and a second portion 240 connected sequentially along its length. A portion of the first portion 220 is stacked with a first sub-portion 112, and the second portion 240 is stacked with a portion of the second sub-portion 114. In other words, the first sub-portion 112 and the second sub-portion 114 are positioned differently in the thickness direction of the motherboard bracket, and the first portion 220 and the second portion 240 are also positioned differently in the thickness direction of the motherboard bracket. The first sub-portion 112 and the first portion 220 correspond to the same connector 500, and the second sub-portion 114 and the second portion 240 correspond to the same connector 500. The thickness direction of the motherboard bracket is, for example,... Figure 9 The direction indicated by the middle arrow line D, and the thickness direction of the motherboard bracket is, for example, the same as the thickness direction of the motherboard 400.

[0068] The first inclined portion 113 and the second inclined portion 230 are arranged at intervals along the length direction of the first sheet 110 to form a fault-tolerant space 700 between the first sheet 110 and the metal reinforcing sheet 200. Optionally, refer to Figure 9As shown, a portion of the first section 220, a portion of the second sub-section 114, the first inclined section 113, and the second inclined section 230 together form a fault tolerance space 700. In the thickness direction of the motherboard bracket, there is a first gap between the first section 220 and the second sub-section 114, and in the length direction of the first sheet 110, there is a second gap between the first inclined section 113 and the second inclined section 230.

[0069] In this embodiment, the fault tolerance space 700 provides a fitting allowance between the first piece 110 and the metal reinforcing piece 200. The presence of the fitting allowance reduces the requirements for the machining accuracy of the first piece 110 and the metal reinforcing piece 200. With this setting, even if there are slight errors between the first piece 110 and the metal reinforcing piece 200, the first piece 110 and the metal reinforcing piece 200 can still be assembled smoothly.

[0070] Furthermore, the existence of the tolerance space 700 provides elastic deformation space for the first piece 110 and the metal reinforcing piece 200. In actual use, when there are processing errors in the first piece 110 and the metal reinforcing piece 200, for example, at least one of the first piece 110 and the metal reinforcing piece 200 can undergo elastic deformation to improve the fit between the first piece 110 and the metal reinforcing piece 200, thereby improving the connection reliability between the two.

[0071] Furthermore, to accommodate connectors 500 of different sizes, the first sheet 110 includes a first sub-part 112, a first inclined part 113, and a second sub-part 114. The metal reinforcing sheet 200 includes a first portion 220, a second inclined part 230, and a second portion 240. A portion of the first portion 220 overlaps with the first sub-part 112, and the second portion 240 overlaps with a portion of the second sub-part 114. The first inclined part 113 and the second inclined part 230 are arranged at intervals along the length of the first sheet 110 to form a tolerance space 700 between the first sheet 110 and the metal reinforcing sheet 200. In other words, in this embodiment, virtually no additional processing is required. The tolerance space 700 is directly formed using the shapes of the first sheet 110 and the metal reinforcing sheet 200 themselves, which reduces the processing difficulty of the motherboard bracket.

[0072] Taking the example of a third gap in the thickness direction of the motherboard bracket between the first portion 220 and the first sub-portion 112 due to processing errors, in this case, for example, the end of the first portion 220 away from the first inclined portion 113 can be moved towards the first sub-portion 112, causing the first portion 220 to undergo elastic deformation, thereby improving the fit between the first portion 220 and the first sub-portion 112. The same principle applies to the gap between the second portion 240 and the second sub-portion 114 in the thickness direction of the motherboard bracket, and will not be elaborated further here.

[0073] In actual processing, the first portion 220 is connected to the first sub-portion 112, and the second portion 240 and the second sub-portion 114 are connected, for example, by welding, or more specifically, by spot welding. Using the solution provided in this embodiment, the presence of the tolerance space 700 improves the fit between the first portion 220 and the first sub-portion 112, as well as the fit between the second portion 240 and the second sub-portion 114, thereby reducing incomplete welds and further improving the connection strength between the first portion 220 and the first sub-portion 112, and the connection strength between the second portion 240 and the second sub-portion 114.

[0074] In other alternative embodiments, the fault tolerance space 700 may not exist, in which case the first inclined portion 113 and the second inclined portion 230 may be in contact, for example.

[0075] In another embodiment, reference Figure 1 and Figure 2 As shown, the motherboard bracket also includes a plastic reinforcing member 300, which is connected to the main body 100. The presence of the plastic reinforcing member 300 increases the strength of the portion of the motherboard bracket corresponding to it, thereby extending the service life of the motherboard bracket. Furthermore, the plastic reinforcing member 300 is lightweight, making the overall motherboard bracket lighter, and its ease of molding reduces the processing difficulty of the motherboard bracket.

[0076] In other alternative embodiments, the motherboard bracket may not include the plastic reinforcement 300, or a metal reinforcement may be used instead of the plastic reinforcement 300.

[0077] In another embodiment, reference Figures 10 to 12 As shown, the plastic reinforcing member 300 includes a first plastic portion 310, and a portion of the metal reinforcing sheet 200 is embedded within the first plastic portion 310. In this arrangement, the first plastic portion 310 can restrict the movement of the metal reinforcing sheet 200, thereby improving the stability of the metal reinforcing sheet 200.

[0078] In other alternative embodiments, the metal reinforcing sheet 200 may also be located outside the plastic reinforcing member 300.

[0079] In a further embodiment, reference is made to... Figures 10 to 12As shown, the first sheet 110, for example, has a first through hole 115. A portion of the edge of the metal reinforcing sheet 200 blocks a part of the first through hole 115. At least a portion of the first plastic part 310 is located on the side of the metal reinforcing sheet 200 away from the first sheet 110, and a first plastic connecting part 320 is provided. A portion of the first plastic connecting part 320 is located in the first through hole 115 and engages with the metal reinforcing sheet 200 in the thickness direction of the motherboard bracket. In this layout, a portion of the metal reinforcing sheet 200 is sandwiched between the portion of the first plastic connecting part 320 located in the first through hole 115 and the first plastic part 310, which makes the connection between the first plastic part 310 and the main body 100 more reliable.

[0080] Further, refer to Figure 11 As shown, the number of first plastic connecting portions 320 and first through holes 115 is, for example, at least two, and they correspond one-to-one. With this arrangement, the first plastic portion 310 and the metal reinforcing sheet 200 are connected by at least two first plastic connecting portions 320, which gives the first plastic portion 310 and the metal reinforcing sheet 200 a larger mating area, thereby improving the connection reliability of the first plastic portion 310 and the metal reinforcing sheet 200.

[0081] Specifically, refer to Figure 22 As shown, the side of the first plastic part 310 facing the first sheet 110 is recessed in a direction away from the first sheet 110, and a cavity 311 is formed therein. The end of the first portion 220 mentioned above that is away from the first inclined portion 113 is embedded in the cavity 311.

[0082] In other alternative embodiments, the orthographic projection of the metal reinforcing sheet 200 in the thickness direction of the motherboard bracket and the orthographic projection of the first through hole 115 in the thickness direction of the motherboard bracket can also be arranged side by side. In this case, there is no obstruction relationship between the metal reinforcing sheet 200 and the first through hole 115. In this layout, for example, the first plastic part 310 and the main body part 100 are connected together by the friction between the hole wall of the first through hole 115 and the first plastic connecting part 320.

[0083] In a further embodiment, reference is made to... Figure 11 As shown, the metal reinforcing sheet 200 is recessed inward at a portion of its edge corresponding to the first through hole 115, forming a recessed portion 250. A portion of the first plastic connecting portion 320 is located within the recessed portion 250. For ease of description, the plane containing the recessed portion 250 is defined as the first plane, which is perpendicular to the thickness direction of the motherboard bracket.

[0084] In this embodiment, a portion of the first plastic connector 320 is located within the recess 250. As a result, the cross-sectional area of ​​the first plastic connector 320 in the first plane is relatively large, which makes the first plastic connector 320 have strong tensile strength, thereby making the fit between the first plastic connector 320 and the metal reinforcing sheet 200 more reliable.

[0085] In other alternative embodiments, the edge of the metal reinforcing sheet 200 may not have a recess 250.

[0086] In another embodiment, reference Figure 13 As shown, the first piece 110 is located on the side of the metal reinforcing piece 200 facing the connector 500. The first and second ends of the first piece 110, which are opposite to each other in its own length direction, are both used to connect to the frame of the electronic device. The plastic reinforcing member 300 includes a plastic support rib 330. The plastic support rib 330 is located on the side of the first piece 110 away from the metal reinforcing piece 200 and is connected to the first piece 110. The plastic support rib 330 is used to contact the motherboard 400. In the thickness direction of the motherboard bracket, the orthographic projection of the plastic support rib 330 is located between the orthographic projection of the first end of the first piece 110 and the orthographic projection of the second end of the first piece 110.

[0087] In this embodiment, the plastic support rib 330 has a certain elasticity, which can buffer the force on the first piece 110, thereby extending the service life of the first piece 110. Furthermore, in this embodiment, the first and second ends of the first piece 110, which are opposite each other along its length, are both used to connect to the frame of the electronic device. Simultaneously, the area between the first and second ends of the first piece 110 is in contact with the motherboard 400 through the plastic support rib 330. With this layout, the first piece 110 experiences relatively balanced force overall. This results in a more uniform force applied by the first piece 110 to the connector 500, thereby reducing the possibility of damage to the first piece 110 and connector 500 due to excessive localized force.

[0088] Specifically, refer to Figure 13 As shown, the first end of the first piece 110 is provided with a first connecting portion 140, and the first connecting portion 140 is provided with a first mounting hole 141, which is connected to the frame, for example, through a first threaded component. The second end of the first piece 110 is provided with a second connecting portion 150, and the second connecting portion 150 is provided with a second mounting hole 151, which is connected to the frame through a second threaded component. Both the first connecting portion 140 and the second connecting portion 150 are part of the main body 100, and the electronic device is, for example, a smartphone; correspondingly, the frame is, for example, the mid-frame of a smartphone.

[0089] In other alternative embodiments, the plastic reinforcement 300 may also exclude the plastic support rib 330.

[0090] In a further embodiment, reference is made to... Figure 7 , Figures 14 to 16 as well as Figure 20 As shown, the metal reinforcing sheet 200, for example, has a first opening 270, and the first sheet 110, for example, has a second opening 116. In the thickness direction of the motherboard bracket, a portion of the orthographic projection of the second opening 116 coincides with a portion of the orthographic projection of the first opening 270. Optionally, the diameter of the second opening 116 is, for example, smaller than the diameter of the first opening 270. The plastic support rib 330 has a second plastic connecting portion 340. A portion of the second plastic connecting portion 340 is located within the first opening 270 and engages with a portion of the first sheet 110 in the thickness direction of the motherboard bracket. In this arrangement, a portion of the first sheet 110 is sandwiched between the portion of the second plastic connecting portion 340 located within the first opening 270 and the plastic support rib 330, making the connection between the plastic support rib 330 and the first sheet 110 more reliable.

[0091] In other alternative embodiments, the metal reinforcing sheet 200 may not have the second opening 116. In this case, the second plastic connecting part 340 is located entirely within the second opening 116, and the connection between the plastic support rib 330 and the first sheet 110 is achieved, for example, solely by the friction between the second plastic connecting part 340 and the hole wall of the second opening 116.

[0092] In another embodiment, reference Figure 18 As shown, at least a portion of the edges of the main body 100 are provided with reinforcing flanges 120, for example. The provision of reinforcing flanges 120 increases the strength of at least a portion of the edges of the main body 100, thereby improving the bending resistance of the main body 100.

[0093] In other alternative embodiments, the edge of the main body 100 may not have a reinforcing flange 120.

[0094] In a further embodiment, reference is made to... Figure 18 As shown, the main body 100 is provided with a second through hole 130, and the reinforcing flange 120 covers a part of the second through hole 130.

[0095] refer to Figure 19 and Figure 20As shown, the plastic reinforcement 300 includes, for example, a second plastic portion 350. At least a portion of the second plastic portion 350 is located on the same side of the main body 100 as the reinforcing flange 120, and is engaged with at least one of the main body 100 and the reinforcing flange 120 in the thickness direction of the motherboard bracket. Optionally, the second plastic portion 350 is, for example, entirely located on the same side of the main body 100 as the reinforcing flange 120, and the second plastic portion 350 is engaged with both the main body 100 and the reinforcing flange 120 in the thickness direction of the motherboard bracket.

[0096] refer to Figure 20 As shown, the second plastic part 350 is provided with a third plastic connecting part 360, a portion of which is located in the second through hole 130 and engages with the reinforcing flange 120 in the thickness direction of the motherboard bracket.

[0097] In this embodiment, at least a portion of the second plastic part 350 is located on the same side of the main body 100 as the reinforcing flange 120, and is engaged with at least one of the main body 100 and the reinforcing flange 120 at the upper limit in the thickness direction of the motherboard bracket. With this arrangement, at least one of the main body 100 and the reinforcing flange 120 can restrict the movement of the second plastic part 350 toward the direction closer to the main body 100. At the same time, in this embodiment, a portion of the third plastic connecting part 360 is located in the second through hole 130, and is engaged with the reinforcing flange 120 at the upper limit in the thickness direction of the motherboard bracket. With this arrangement, the third plastic connecting part 360 and the reinforcing flange 120 work together to restrict the movement of the second plastic part 350 toward the direction away from the main body 100. In this way, the stability of the second plastic part 350 in the thickness direction of the motherboard bracket is better, thereby making the connection between the second plastic part 350 and the main body 100 more reliable.

[0098] Optionally, refer to Figure 18 As shown, a portion of the edge of the first piece 110 is provided with a reinforcing flange 120, and the first piece 110 is provided with a second through hole 130, for example. Of course, reinforcing flanges 120 may also be provided on other edges of the main body 100; this is just an example.

[0099] Further, refer to Figure 20 As shown, the number of second through holes 130 and the number of third plastic connecting portions 360 are both at least two, and they correspond one-to-one. The second through holes 130 are arranged at intervals along the length direction of the first sheet 110, and the second plastic portions 350 extend along the length direction of the first sheet 110. The third plastic connecting portions 360 are arranged at intervals along the extending direction of the second plastic portions 350. With this arrangement, the plastic reinforcing member 300 and the main body 100 have a large mating area, thus making the connection between them more reliable.

[0100] Additionally, refer to Figure 20 As shown, the plastic support rib 330 mentioned above is connected to the second plastic part 350, for example. It should be noted that the plastic support rib 330 can also be connected to other parts of the plastic reinforcement 300; this is just an example.

[0101] In other alternative embodiments, the orthographic projection of the reinforcing flange 120 along the thickness direction of the motherboard bracket can also be arranged side by side with the orthographic projection of the second through hole 130 along the thickness direction of the motherboard bracket. That is, there is no obstruction relationship between the reinforcing flange 120 and the second through hole 130. In this case, for example, the connection between the second plastic part 350 and the main body part 100 can be achieved solely by the frictional force between the third plastic connecting part 360 and the hole wall of the second through hole 130.

[0102] In a further embodiment, reference is made to... Figure 19 and Figure 20 As shown, the first piece 110 includes, for example, a third sub-part. In the thickness direction of the motherboard bracket, the orthographic projection of the third sub-part coincides, for example, with the orthographic projection of the reinforcing flange 120. For ease of description, the third sub-part and the reinforcing flange 120 are collectively defined as the reinforcing part.

[0103] refer to Figure 19 and Figure 20 As shown, the plastic reinforcing member 300 may also include a third plastic portion 370, which is located on the side of the main body 100 away from the reinforcing flange 120 and is connected to both the second plastic portion 350 and the third plastic connecting portion 360. The second plastic portion 350, the third plastic connecting portion 360, and the third plastic portion 370 are arranged sequentially, for example, along the circumference of the reinforcing member. In this arrangement, the movement of the reinforcing member in different circumferential directions is restricted, thereby making the connection between the plastic reinforcing member 300 and the main body 100 more reliable.

[0104] In another embodiment, reference Figure 16 and Figure 17 As shown, the plastic reinforcing part 300 and the main body 100 are, for example, an integral injection molding structure, and the metal reinforcing sheet 200 has a notch 260 on part of its edge, for example, to avoid the injection mold 600.

[0105] In this embodiment, the plastic reinforcing member 300 and the main body 100 are integrally injection molded structures. This arrangement provides good connection strength between the plastic reinforcing member 300 and the main body 100, making the connection more reliable. Furthermore, the notch 260 provides space for the arrangement of the injection mold 600, thereby reducing the injection molding difficulty of the plastic reinforcing member 300.

[0106] In other alternative embodiments, the plastic reinforcing member 300 and the main body 100 may be connected by non-removable methods such as welding or gluing, or by non-removable methods such as threaded connection or snap-fit ​​connection. Additionally, the metal reinforcing sheet 200 may not have the notch 260.

[0107] This application also provides an electronic device that includes the circuit board assembly described above. The electronic device is, for example, a smartphone, tablet computer, or e-book reader. The circuit board assembly described above is highly portable, and since this electronic device includes the circuit board assembly described above, it also possesses good portability.

[0108] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A circuit board assembly, characterized by The application relates to a mainboard support for a mainboard and at least two connectors arranged side by side, each of the connectors being mounted on the mainboard and having different sizes in the thickness direction of the mainboard. The mainboard support comprises a main body and a metal reinforcing sheet, the main body comprises at least two pieces arranged in sequence in the circumferential direction of the mainboard support, and the first piece is arranged to press each of the connectors against the mainboard, the metal reinforcing sheet is connected to the first piece and is arranged on the side of the first piece away from the connectors or on the side of the first piece facing the connectors, and the shapes of the first piece and the metal reinforcing sheet are adapted to the sizes of the connectors in the thickness direction of the mainboard. The first piece and the metal reinforcing sheet are in the form of strips and have the same length direction, the first piece is provided with at least two first positioning holes arranged at intervals in the length direction of the first piece, the metal reinforcing sheet is provided with at least two second positioning holes arranged at intervals in the length direction of the metal reinforcing sheet, the first positioning holes and the second positioning holes are in one-to-one correspondence, and the corresponding first positioning hole and second positioning hole are used for positioning cooperation with the same positioning part of a positioning tool.

2. The circuit board assembly of claim 1, wherein, The first piece and the metal reinforcing sheet are in the form of strips and have the same length direction, the first piece comprises a first sub-piece, a first inclined part and a second sub-piece connected in sequence in the length direction of the first piece, so that the first sub-piece and the second sub-piece are adapted to the connectors with different sizes, the metal reinforcing sheet comprises a first part, a second inclined part and a second part connected in sequence in the length direction of the metal reinforcing sheet, a part of the first part is arranged on the first sub-piece, the second part is arranged on a part of the second sub-piece, and the first inclined part and the second inclined part are arranged at intervals in the length direction of the first piece to form a fault-tolerant space between the first piece and the metal reinforcing sheet.

3. The circuit board assembly of claim 1, wherein, The mainboard support further comprises a plastic reinforcing part, and the plastic reinforcing part comprises a first plastic part, and a part of the metal reinforcing sheet is embedded in the first plastic part.

4. The circuit board assembly of claim 1, wherein, The first piece is provided with a first through hole, a part of the edge of the metal reinforcing sheet shields a part of the first through hole, at least a part of the first plastic part is arranged on the side of the metal reinforcing sheet away from the first piece, and the first plastic part is provided with a first plastic connecting part, a part of the first plastic connecting part is arranged in the first through hole and is limited in cooperation with the metal reinforcing sheet in the thickness direction of the mainboard support. The edge of the metal reinforcing sheet corresponding to the first through hole is inwardly recessed and forms a recessed part, and a part of the first plastic connecting part is arranged in the recessed part.

5. The circuit board assembly of claim 4, wherein, The first piece is arranged on the side of the metal reinforcing sheet facing the connectors, and the first end and the second end of the first piece opposite to each other in the length direction of the first piece are used for being connected to the frame of an electronic device, 6. The circuit board assembly of claim 1, wherein, ​ The mainboard support further comprises a plastic reinforcing member connected to the main body part, the plastic reinforcing member comprises a plastic supporting rib located on the side of the first sheet body away from the metal reinforcing sheet and connected to the first sheet body, the plastic supporting rib is used to contact the mainboard, and in the thickness direction of the mainboard support, the orthographic projection of the plastic supporting rib is located between the orthographic projection of the first end of the first sheet body and the orthographic projection of the second end of the first sheet body.

7. The circuit board assembly of claim 6, wherein, The metal reinforcing sheet is provided with a first opening, the first sheet body is provided with a second opening, in the thickness direction of the mainboard support, the orthographic projection of the second opening coincides with part of the orthographic projection of the first opening, the plastic supporting rib is provided with a second plastic connecting part, part of the second plastic connecting part is located in the first opening and is limited and matched with part of the first sheet body in the thickness direction of the mainboard support.

8. The circuit board assembly of claim 1, wherein, At least part of the edge of the main body part is provided with a reinforcing flange, the main body part is provided with a second through hole, and the reinforcing flange shields part of the second through hole. The mainboard support further comprises a plastic reinforcing member, the plastic reinforcing member comprises a second plastic part, at least part of the second plastic part is located on the same side of the main body part as the reinforcing flange and is limited and matched with at least one of the main body part and the reinforcing flange in the thickness direction of the mainboard support, the second plastic part is provided with a third plastic connecting part, part of the third plastic connecting part is located in the second through hole and is limited and matched with the reinforcing flange in the thickness direction of the mainboard support.

9. The circuit board assembly of claim 1, wherein, The mainboard support further comprises a plastic reinforcing member, the plastic reinforcing member is an integral injection molding structure with the main body part, part of the edge of the metal reinforcing sheet is provided with a notch, and the notch is used to avoid the injection molding mold.

10. An electronic device, comprising: The circuit board assembly comprises the circuit board assembly of any one of claims 1-9.

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