Board card and board card assembly

Abstract

The utility model discloses a board card and a board card assembly, the board card comprises a first board card main body and at least two connectors, the first board card main body comprises two first main surfaces arranged back to back along the thickness direction of the first board card main body and a side surface connected between the two first main surfaces; the at least two connectors are arranged on the side face of the first board card body at intervals and extend in the preset extending direction; the preset extension direction and the thickness direction intersect with each other; the at least two connectors are used for being connected with other board cards in an inserted mode in the preset extending direction so that the board cards can be electrically connected with the other board cards. Through the above mode, the structure compactness and integration of the board card assembly can be improved, and the working reliability of the board card assembly is improved.

Description

Technical Field

[0001] The present application relates to the technical field of boards and cards, and in particular to boards and board and card components. Background Art

[0002] The assembly interconnection method between boards is generally through a pair of connectors, which takes up a lot of space and is difficult to meet the needs. In addition, there is contact resistance between connectors. Long-term plugging and unplugging and use may cause the contact resistance between connectors to increase, which in turn leads to poor reliability of the connection between boards, making it difficult to meet the needs. Utility Model Content

[0003] The main technical problem solved by the present application is to provide a board and a board assembly, which can improve the structural compactness and integration of the board assembly and improve the reliability of the operation of the board assembly.

[0004] In order to solve the above technical problems, the first technical solution adopted by the present application is to provide a board card, which includes a first board card body and at least two connectors, the first board card body includes two first main surfaces arranged opposite to each other along its thickness direction and a side surface connected between the two first main surfaces; at least two connectors are arranged at intervals on the side surfaces of the first board card body, and are respectively extended along a preset extension direction; the preset extension direction and the thickness direction intersect each other; at least two connectors are used to be plug-connected with other boards along the preset extension direction, so that the board card is electrically connected to the other boards.

[0005] In some embodiments, the predetermined extension direction and the thickness direction are perpendicular to each other.

[0006] In some embodiments, the connector includes a connector body and a first metal layer. The connector body is connected to the side and extends outward from the first board body along a preset extension direction. The first metal layer covers at least a portion of the outer surface of the connector body.

[0007] In some embodiments, the board includes at least one second metal layer, the second metal layer covers at least a portion of the first main surface and is connected to the first metal layer.

[0008] In some embodiments, the first board body is provided with a via hole, and a third metal layer is circumferentially arranged on the hole wall of the via hole; the second metal layer is provided with an exposure hole arranged opposite to and connected to the via hole, and the via hole is exposed through the exposure hole, so that the third metal layer can be connected to the second metal layer through the exposure hole.

[0009] In some embodiments, the board includes a green oil plugging member, which is disposed in the via hole and is in contact with the third metal layer.

[0010] In some embodiments, the board includes a green oil coating, which is coated on at least a portion of the surface of the second metal layer and forms a gap with the connecting edge of the first metal layer and the second metal layer.

[0011] In some embodiments, the surface of the second metal layer away from the first main surface includes a first region and a second region arranged along a preset extension direction, the green oil coating is applied to the first region, and the second region is located between the connection edge and the first region to form a gap.

[0012] In some embodiments, the board includes a supporting portion, which is arranged on the side and spaced apart from at least two connectors, so as to form a spacing space between the first board body and other boards when the at least two connectors are connected to other boards.

[0013] In order to solve the above-mentioned technical problems, the second technical solution adopted in the present application is to provide a board assembly, which includes a first board and a second board, the first board is set as the board described in the above-mentioned first technical solution; the second board includes a second board body and at least two plug-in fittings, the second board body includes two second main surfaces arranged opposite to each other along its thickness direction; at least two plug-in fittings are arranged at intervals on one of the two second main surfaces; wherein, the first board body and the second board body of the first board intersect each other in the thickness direction in the assembled state, and the at least two connectors of the first board are plug-connected with the at least two plug-in fittings along a preset extension direction.

[0014] In some embodiments, the first board body and the second board body of the first board are perpendicular to each other in thickness directions in the assembled state; and the preset extension direction is perpendicular to the thickness direction of the first board body.

[0015] The beneficial effects of the present application are as follows: Different from the prior art, by setting a board including a first board body and at least two connectors, wherein at least two connectors are arranged at intervals on the side of the first board body and extend respectively along a preset extension direction, and the preset extension direction intersects with the thickness direction of the board, at least two connectors are used to connect with other boards along the preset extension direction, so that the board is electrically connected with other boards, and the board is connected with other boards through at least two connectors, and there is no need to set up additional connectors to connect the board with other boards, thereby effectively reducing the space occupation of the board assembly formed by the connection between the board and other boards, and effectively improving the space utilization, structural compactness and integration of the board assembly. In addition, by setting at least two connectors, direct connection between the board and other boards can be achieved, the connection of the intermediate connector is omitted, and the increase in energy consumption and heating of the connector caused by the change of contact resistance between the connectors are avoided, which is conducive to improving the stability and reliability of the board assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of a board assembly of the present application;

[0017] Figure 2 yes Figure 1 A schematic diagram of the disassembled structure of the board assembly shown;

[0018] Figure 3 yes Figure 1 A schematic diagram of the three-dimensional structure of the first board shown;

[0019] Figure 4 yes Figure 3 An enlarged schematic diagram of a local area C of the first board is shown;

[0020] Figure 5 yes Figure 4 A schematic diagram of a cross-sectional structure of a local structure of the first board along the cutting line AA is shown;

[0021] Figure 6 yes Figure 4 The schematic diagram of a cross-section structure of a local structure of the first board along the cutting line BB is shown. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] First of all, it should be noted that the board refers to a circuit board, such as a PCB board, or printed circuit board, which is an indispensable part of electronic engineers when designing and manufacturing electronic equipment. It forms a stable and reliable circuit structure by connecting various electronic components and chips.

[0024] After long-term research, the inventor of the present application found that the connection between boards is usually achieved by two connectors with the same structure, that is, each board is connected to a connector, and the two connectors are connected to realize the indirect connection between the boards. However, the use of connectors will cause the volume of the board assembly to become larger, resulting in a large space occupation of the board assembly. In addition, the contact points between the connectors will generate contact resistance when current passes through. When vibrated or impacted, the contact resistance may change significantly and cause instantaneous power failure and other phenomena. In the process of long-term plugging and unplugging and using the connectors, the contact conductors between the connectors may be worn and oxidized, resulting in an increase in contact resistance, thereby causing an increase in energy consumption and heating of the connector, and the reliability of the board assembly is low. In order to improve or solve the above technical problems, the present application proposes at least the following embodiments.

[0025] The following board-card assembly embodiment of the present application describes an exemplary structure of the board-card assembly.

[0026] like Figure 1 and Figure 2 As shown, the board assembly 3 includes a first board 1 and a second board 2 .

[0027] like Figures 2 to 4 As shown, the first board 1 includes a first board body 10 and at least two connectors 20. The first board body 10 includes two first main surfaces 101 disposed opposite to each other along its thickness direction F1 and a side surface 102 connected between the two first main surfaces 101. At least two connectors 20 are disposed at intervals on the side surface 102 of the first board body 10 and are respectively extended along a preset extension direction F2. The preset extension direction F2 intersects with the thickness direction F1 of the first board body 10. The at least two connectors 20 are used to connect with the second board 2 along the preset extension direction F2 so that the first board 1 is electrically connected with the second board 2. For the first board 1, the second board 2 is another board connected thereto to form a board assembly 3. In some embodiments, the preset extension direction F2 is perpendicular to the thickness direction F1 of the first board body 10.

[0028] like Figure 3As shown, the second board 2 includes a second board body 21 and at least two plug-in fittings 22. The second board body 21 includes two second main surfaces 23 disposed opposite to each other along its thickness direction F2. At least two plug-in fittings 22 are disposed at intervals on one of the two second main surfaces 23. In the assembled state, the thickness directions F1 and F2 of the first board body 10 and the second board body 21 intersect each other. The at least two connectors 20 of the first board 1 are plug-connected with the at least two plug-in fittings 22 along the preset extension direction F2 to form the board assembly 3. Optionally, the plug-in fittings 22 may be, for example, metallized through-hole pads. The first board 1 and the second board 2 may be further connected by gluing, welding, etc. on the basis of the plug-in connection. For example, the connectors 20 and the plug-in fittings 22 may be soldered by wave soldering. The connectors 20 and the plug-in fittings 22 may be equal in number and correspond one to one.

[0029] By providing the connector 20 and the plug-in fitting 22 to cooperate with each other, the first board 1 and the second board 2 are connected to form the board assembly 3, so that there is no need to provide an additional connector for connection, thereby effectively reducing the space occupied by the board assembly 3, and effectively improving the space utilization, structural compactness and integration of the board assembly 3. In addition, by providing at least two connectors 20 and at least two plug-in fittings 22, a direct connection between the first board 1 and the second board 2 can be achieved, and the connection of the intermediate connector is omitted, so as to avoid the increase of energy consumption and the heating of the connector caused by the change of the contact resistance between the connectors, which is conducive to improving the stability and reliability of the operation of the board assembly 3.

[0030] Alternatively, if Figure 1 and Figure 2 As shown, the thickness directions F1 and F2 of the first board body 10 and the second board body 21 are perpendicular to each other in the assembled state, and the preset extension direction F2 is perpendicular to the thickness direction F1 of the first board body 10. At this time, the first board 1 and the second board 2 are vertically assembled, which is beneficial to improve the applicability of the board assembly 3, and is beneficial to improve the space utilization and integration of the board assembly 3.

[0031] Alternatively, if Figure 2 and Figure 5 As shown, the connector 20 includes a connector body 210 and a first metal layer 220 . The connector body 210 is connected to the side surface 102 and extends out of the first card body 10 along a preset extension direction F2 . Figure 5 Shown along Figure 4The sectional view obtained by taking the AA section in the figure and taking the direction indicated by the arrow as the projection direction shows that the first metal layer 220 covers at least part of the outer surface of the connector body 210. The first metal layer 220 can be formed, for example, by using a metallization edging process on the surface of the connector 20, and the material of the first metal layer 220 can be, for example, a conductive metal material such as copper or aluminum. By providing the first metal layer 220 on at least part of the outer surface of the connector body, the connector 20 can be conductive, thereby facilitating the first board 1 to transmit current and signals to the second board 2 through the connector 20, so as to realize the electrical interconnection between the first board 1 and the second board 2.

[0032] Alternatively, if Figure 4 As shown, the first board 1 includes at least one second metal layer 30, which covers at least part of the first main surface 101 and is connected to the first metal layer 220. Optionally, the first metal layer 220 of each connector 20 is respectively connected to two second metal layers 30, and the two second metal layers 30 respectively cover two opposite first main surfaces 101. The material of the second metal layer 30 can be, for example, copper, aluminum and other metal materials. The first metal layer 220 and the second metal layer 30 can be connected, for example, by bonding, welding and the like. For example, the first metal layer 220 and the second metal layer 30 can be integrated, that is, the first metal layer 220 and the second metal layer 30 are different parts of the same metal layer, and the two are integrally arranged to achieve the connection between the first metal layer 220 and the second metal layer 30. Of course, other connection methods can also be used. By providing the second metal layer 30 connected to the first metal layer 220, the adhesion of the first metal layer 220 is effectively increased, which is conducive to improving the anti-falling property of the first metal layer 220, and is conducive to improving the connection stability and service life of the board assembly 3.

[0033] Alternatively, if Figure 4As shown, the first board body 10 is provided with a via hole 103, and a third metal layer 110 is circumferentially arranged on the hole wall of the via hole 103. The second metal layer 30 is provided with an exposure hole 303 which is arranged opposite to and connected to the via hole 103, and the via hole 103 is exposed through the exposure hole 303, so that the third metal layer 110 can be connected to the second metal layer 30 through the exposure hole 303. Optionally, the second metal layer 30 with the exposure hole 303 is provided at both ends of the via hole 103, so that the third metal layer 110 is respectively connected to the second metal layer 30 at both ends of the via hole 103. Optionally, the second metal layer 30 and the third metal layer 110 can be connected, for example, by gluing, welding, etc., and of course other connection methods can also be used. Optionally, the second metal layer 30 and the third metal layer 110 are connected by welding by adding a welding ring at the connection. By providing a third metal layer 110 connected to the second metal layer 30, the adhesion between the first metal layer 220 and the second metal layer 30 is further increased, which is beneficial to improving the anti-detachment property of the first metal layer 220 and the second metal layer 30, and is beneficial to improving the connection stability and service life of the board assembly 3.

[0034] Alternatively, if Figure 6 As shown, the first board 1 includes a green oil plugging member 40 , which is disposed in the via hole 103 and adheres to the third metal layer 110 . Figure 6 Shown along Figure 4 The green oil plugging hole component 40 can be made, for example, by using a double-sided green oil plugging process in the via hole 103. The green oil is a liquid photoresist, which effectively reduces the possibility of solder flux and solder beads generated by welding entering and remaining in the via hole 103 when the docking plug 20 is soldered.

[0035] Alternatively, if Figure 4 As shown, the first board 1 includes a green oil coating 50, which is coated on at least part of the surface of the second metal layer 30, and forms a gap 104 with the connecting edge of the first metal layer 220 and the second metal layer 30. By setting the green oil coating 50, the tin creeping height during welding of the docking plug 20 is effectively controlled, and by reasonably setting the width of the gap 104, the tin creeping height can be reasonably controlled, effectively reducing the possibility of unstable welding due to too low tin creeping height, effectively reducing the possibility of deformation or even short circuit of the first board 1 due to too high tin creeping height, and effectively improving the working stability and reliability of the first board 1.

[0036] Alternatively, if Figure 4As shown, the surface of the second metal layer 30 away from the first main surface 101 includes a first area 301 and a second area 302 arranged along a preset extension direction F2, the green oil coating 50 is applied to the first area 301, and the second area 302 is located between the connecting edge and the first area 301 to form a gap 104.

[0037] Alternatively, if Figure 4 As shown, a chamfer 230 is provided at one end of the connector 20 away from the first board body 10 , which is helpful to reduce the difficulty of inserting the connector 20 and improve the assembly efficiency and yield rate of the board assembly 3 .

[0038] Alternatively, if Figure 3 As shown, the first board 1 includes a support portion 60, which is disposed on the side 102 and is spaced apart from at least two connectors 20, and is used to form a spacing space 601 between the first board body 10 and the second board 2 when the at least two connectors 20 are plugged into the second board 2. By providing the support portion 60 to form the spacing space 601, the first board 1 can be limited and supported, and the volatilization and dissipation of the gas generated during the welding of the connector 20 and the plug-in mating part 22 can be facilitated, and the heat dissipation during welding is facilitated, which is beneficial to improving the assembly yield rate of the board assembly 3.

[0039] In summary, by providing a first board 1 including a first board body 10 and at least two connectors 20, wherein the at least two connectors 20 are arranged at intervals on the side 102 of the first board body 10 and extend respectively along a preset extension direction F2, and the preset extension direction F2 and the thickness direction F1 of the first board 1 intersect each other, the at least two connectors 20 are used to be plugged and connected with the second board 2 along the preset extension direction F2, so that the first board 1 and the second board 2 are electrically connected, and the first board 1 is connected to the second board 2 through the at least two connectors 20, and there is no need to additionally provide a connector for connecting the first board 1 and the second board 2, thereby effectively reducing the space occupation of the board assembly 3 formed by the connection between the first board 1 and the second board 2, and effectively improving the space utilization, structural compactness and integration of the board assembly 3. In addition, by providing at least two connectors 20, direct connection between the first board 1 and the second board 2 can be achieved, the connection of the intermediate connector is omitted, and the increase in energy consumption and heating of the connector caused by the change in contact resistance between the connectors are avoided, which is conducive to improving the stability and reliability of the board assembly 3.

[0040] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A board, characterized in that: include: The first board body comprises two first main surfaces disposed opposite to each other along the thickness direction thereof and a side surface connected between the two first main surfaces; At least two connectors are arranged at intervals on the side of the first board body and are respectively extended along a preset extension direction; the preset extension direction and the thickness direction intersect each other; the at least two connectors are used to be plug-connected with other boards along the preset extension direction so that the board is electrically connected to the other boards.

2. The board according to claim 1, characterized in that: The preset extension direction and the thickness direction are perpendicular to each other.

3. The board according to claim 1, characterized in that: The connector includes a connector body and a first metal layer. The connector body is connected to the side surface and extends outward from the first board body along the preset extension direction. The first metal layer covers at least a portion of the outer surface of the connector body.

4. The board according to claim 3, characterized in that: The board includes at least one second metal layer, which covers at least a portion of the first main surface and is connected to the first metal layer.

5. The board according to claim 4, characterized in that: The first board body is provided with a via hole, and a third metal layer is circumferentially arranged on the hole wall of the via hole; the second metal layer is provided with an exposure hole which is arranged opposite to and connected to the via hole, and the via hole is exposed through the exposure hole, so that the third metal layer can be connected to the second metal layer through the exposure hole.

6. The board according to claim 5, characterized in that: The board card includes a green oil plugging hole component, which is arranged in the via hole and adheres to the third metal layer.

7. The board according to claim 4, characterized in that: The board card includes a green oil coating, which is coated on at least a portion of the surface of the second metal layer and forms a gap with the connecting edge of the first metal layer and the second metal layer.

8. The board according to claim 7, characterized in that: The surface of the second metal layer away from the first main surface includes a first area and a second area arranged along the preset extension direction, the green oil coating is applied to the first area, and the second area is located between the connecting edge and the first area to form a gap.

9. The board according to claim 1, characterized in that: The board includes a supporting portion, which is arranged on the side and spaced apart from the at least two connectors, and is used to form a spacing space between the first board body and the other boards when the at least two connectors are plugged into the other boards.

10. A board assembly, characterized in that: include: A first board, configured as a board as claimed in any one of claims 1 to 9; A second board card, comprising a second board card body and at least two plug-in mating parts, wherein the second board card body comprises two second main surfaces arranged opposite to each other along a thickness direction thereof; The at least two connector fittings are spaced apart and arranged on one of the two second main surfaces; The first board body and the second board body of the first board intersect each other in thickness directions in the assembled state, and at least two connectors of the first board are plug-connected with the at least two plug-in mating parts along the preset extension direction.

11. The board assembly according to claim 10, characterized in that: The first board body and the second board body of the first board are perpendicular to each other in thickness directions in an assembled state; and the preset extension direction is perpendicular to the thickness direction of the first board body.

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