Expansion module and electronic equipment

Abstract

The utility model provides an expansion module and electronic equipment. The expansion module comprises an expansion circuit board and a first grounding connector. The expansion circuit board is provided with a first electric connecting piece, and the first electric connecting piece is an electric plug or a socket. The first electric connecting piece is used for being in electric signal connection with a second electric connecting piece of the main circuit board, and the second electric connecting piece is specifically an electric socket or plug corresponding to the first electric connecting piece. The first grounding connecting piece is provided with a first installation part, and the first installation part is installed on the expansion circuit board and electrically connected with a grounding electrode of the expansion circuit board. And the main circuit board is provided with a second grounding connecting piece which is electrically connected with the grounding electrode. The first grounding connecting piece is at least provided with an insertion piece part or an insertion opening part. And the insertion piece part of the first grounding connecting piece is connected with the insertion opening part of the second grounding connecting piece, or the insertion opening part of the first grounding connecting piece is connected with the insertion piece part of the second grounding connecting piece, so that the expansion circuit board is electrically connected with the grounding electrode of the main circuit board.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electronic equipment, and more particularly relates to an expansion module and electronic equipment. BACKGROUND

[0002] As a key component for enhancing device functions and adapting to diversified application requirements, the installation mode of the expansion circuit board has an important influence on the overall performance, maintainability and space utilization of the device. Traditionally, the expansion circuit board is mostly installed in the form of being built-in in the device host. Although this design ensures the stability of the circuit board and the reliability of signal transmission to a certain extent, it also brings some problems.

[0003] Firstly, the built-in installation mode occupies the internal space of the device host, affecting the arrangement and optimization of other key components. Secondly, the built-in installation mode brings inconvenience to the replacement and maintenance of the expansion circuit board. Once the circuit board fails or needs to be upgraded, the entire device host needs to be disassembled for replacement or maintenance. CONTENT OF THE INVENTION

[0004] The purpose of the embodiments of the present application is to provide an expansion module and electronic equipment to solve the technical problems of the prior art that the expansion circuit board in the electronic equipment occupies the internal space of the host and has low connection flexibility.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is:

[0006] Provided is an expansion module, comprising:

[0007] an expansion circuit board having a first electrical connector for electrical signal connection with a second electrical connector of a main circuit board;

[0008] a first ground connector having a first mounting portion and a first tab / socket portion, the first mounting portion being mounted on the expansion circuit board and electrically connected with a ground electrode of the expansion circuit board, and the first tab / socket portion being connected with a second socket / tab portion of a second ground connector of the main circuit board to realize electrical connection between the ground electrode of the expansion circuit board and the main circuit board.

[0009] As a further improvement of the above technical solution:

[0010] Optionally, the first ground connector further comprises a first body portion, the first mounting portion and the first tab / socket portion are respectively arranged at two ends of the first body portion, and the first mounting portion is mounted on a first surface of the expansion circuit board, and the first tab / socket portion is connected with the second socket / tab portion of the second ground connector of the main circuit board from a second surface of the expansion circuit board.

[0011] Optionally, an extension shell is further included, which is arranged on the extension circuit board, and the extension shell is provided with a first plug window, which covers at least the first electric connecting member and the first plug / jack part.

[0012] Optionally, the extension shell further includes a first positioning part for positioning and fixing the extension module.

[0013] The application further provides an electronic device, which includes an extension module and a device host, the extension module includes an extension circuit board and a first grounding connecting member, and the device host includes a main circuit board and a second grounding connecting member.

[0014] The extension circuit board is provided with a first electric connecting member, and the main circuit board is provided with a second electric connecting member matched with the first electric connecting member.

[0015] The first grounding connecting member is provided with a first mounting part and a first plug / jack part, and the second grounding connecting member is provided with a second mounting part and a second jack / plug part matched with the first plug / jack part.

[0016] The first mounting part is mounted on the extension circuit board and electrically connected with a grounding electrode of the extension circuit board, and the second mounting part is mounted on the main circuit board and electrically connected with a grounding electrode of the main circuit board.

[0017] The first plug / jack part is plugged with the second jack / plug part to realize the electrical connection between the grounding electrodes of the extension circuit board and the main circuit board.

[0018] As a further improvement of the above technical solution:

[0019] Optionally, the first grounding connecting member further includes a first body part, and the first mounting part and the first plug / jack part are arranged at two ends of the first body part respectively; and the first mounting part is mounted on a first surface of the extension circuit board, and the first plug / jack part is connected with the second jack / plug part from a second surface of the extension circuit board.

[0020] The second grounding connecting member further includes a second body part, and the second mounting part and the second jack / plug part are arranged at one end of the second body part; and the second mounting part is mounted on a first surface of the main circuit board, and the second jack / plug part is connected with the first plug / jack part from the first surface of the main circuit board.

[0021] The second surface of the extension circuit board is adjacent to the first surface of the main circuit board.

[0022] Optionally, the expansion module further comprises an expansion shell, the expansion shell is covered on the expansion circuit board, and the expansion shell is provided with a first plug window, the first plug window covers at least the first electric connecting piece and the first plug-in / insertion part;

[0023] The device host further comprises a host shell, the host shell is covered on the main circuit board, and the host shell is provided with a second plug window, the second plug window covers at least the second electric connecting piece and the second insertion / plug-in part;

[0024] The first plug window and the second plug window are arranged in position correspondence.

[0025] Optionally, a positioning assembly is further included, the positioning assembly comprises a first positioning part arranged on the expansion shell, a second positioning part arranged on the host shell and matched with the first positioning part, and a fastener for fastening the first positioning part and the second positioning part.

[0026] Optionally, the first electric connecting piece has a first body part, a first mounting part, a first plug-in part and a first insertion part, and the second electric connecting piece has a second body part, a second mounting part, a second insertion part and a second plug-in part;

[0027] The first mounting part and the first insertion part are arranged at one end of the first body part, and the first mounting part is mounted on the first surface of the expansion circuit board, the first insertion part is arranged at the other end of the first body part and connected to the second insertion part from the second surface of the expansion circuit board;

[0028] The second mounting part and the second insertion part are arranged at one end of the second body part; the second mounting part is mounted on the first surface of the main circuit board, the second insertion part is connected to the first insertion part from the first surface of the main circuit board, the second insertion part is arranged at the other end of the second body part, and the second insertion part is mounted on the second surface of the main circuit board;

[0029] The second surface of the expansion circuit board is adjacent to the first surface of the main circuit board.

[0030] Optionally, the first electric connecting piece and the second electric connecting piece are one-piece casted metal sheet parts and are identical;

[0031] The first mounting part and the second mounting part are arranged to at least include a soldering leg part, one end of the soldering leg part is connected to the first body part or the second body part, and the other end of the soldering leg part is electrically connected to the ground electrode of the expansion circuit board or the main circuit board;

[0032] The first socket part and the second socket part each include two clamping parts, the first tab part and the second tab part each include a tab, the clamping parts protrude from one side of the main circuit board or the extension circuit board, and the two clamping parts are used for inserting the tab.

[0033] The extension module and the electronic device provided by the application have the following advantages:

[0034] The extension module provided by the application includes an extension circuit board and a first grounding connecting piece. The extension circuit board has a first electrical connecting piece, which is specifically an electrical plug or socket. The first electrical connecting piece is used for electrical signal connection with a second electrical connecting piece of a main circuit board, and the second electrical connecting piece is specifically an electrical socket or plug corresponding to the first electrical connecting piece. The first grounding connecting piece has a first mounting part, which is mounted on the extension circuit board and is electrically connected with a grounding electrode of the extension circuit board. The main circuit board is provided with a second grounding connecting piece electrically connected with the grounding electrode. The first grounding connecting piece is provided with at least a tab part or a socket part. The tab part of the first grounding connecting piece is connected with the socket part of the second grounding connecting piece, or the socket part of the first grounding connecting piece is connected with the tab part of the second grounding connecting piece, so as to realize electrical connection between the extension circuit board and the grounding electrode of the main circuit board.

[0035] The electronic device provided by the application includes the above-mentioned extension module and a device host. Therefore, the electronic device also has the advantages of the above-mentioned extension module. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0037] Figure 1 The exploded structural schematic diagram of the electronic device provided by the application;

[0038] Figure 2 The sectional structural schematic diagram of the electronic device provided by the application;

[0039] Figure 3 The local enlarged structural schematic diagram of the electronic device provided by the application;

[0040] Figure 4 The three-dimensional structural schematic diagram of the extension circuit board connecting structure provided by the application;

[0041] Figure 5 The three-dimensional structural schematic diagram of the grounding connecting piece provided by the application;

[0042] Figure 6 An exploded structural schematic view of the extension circuit board connecting structure provided in the present application is shown in FIG. 1.

[0043] Figure 7 A perspective structural schematic view of the extension circuit board connecting structure provided in the present application is shown in FIG. 2.

[0044] Figure 8 An exploded structural schematic view of the device host of the electronic device provided in the present application is shown in FIG. 3.

[0045] Figure 9 A perspective structural schematic view of the device host of the electronic device provided in the present application is shown in FIG. 4.

[0046] Figure 10 A partial enlarged structural schematic view of the electronic device provided in the present application is shown in FIG. 5. Figure 9

[0047] In the drawings, various reference numerals are used throughout the drawings.

[0048] 1, extension circuit board; 11, first electrical connecting member;

[0049] 2, main circuit board; 21, second electrical connecting member;

[0050] 3, first ground connecting member; 31, first mounting portion;

[0051] 32, first tab portion; 33, first body portion;

[0052] 34, first socket portion; 4, second ground connecting member;

[0053] 41, second socket portion; 42, second mounting portion;

[0054] 43, second body portion; 44, second tab portion;

[0055] 5, extension housing; 51, first plug-in window;

[0056] 52, first positioning portion; 6, device host;

[0057] 61, host housing; 62, second plug-in window;

[0058] 63, second positioning portion; 7, fastener. DETAILED DESCRIPTION

[0059] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.​

[0060] In the description of the utility model, it needs to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relation shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0061] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified and limited.

[0062] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0063] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0064] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of the utility model disclosed.

[0065] In the following description, suffixes such as "circuit", "component", "assembly" or "unit" are used only for the convenience of description of the present application, and have no specific meaning in themselves. Therefore, they can be used mixedly.

[0066] The present application will be further described in detail below with the specific embodiments in conjunction with the drawings.

[0067] As shown in Figure 2 and Figure 4 , the present application provides an expansion module, which comprises an expansion circuit board 1 and a first grounding connecting piece 3.

[0068] The expansion circuit board 1 has a first electrical connecting piece 11, which is specifically an electrical plug or socket. The first electrical connecting piece 11 is used for electrical signal connection with a second electrical connecting piece 21 of a main circuit board 2, which is specifically an electrical socket or plug corresponding to the first electrical connecting piece 11.

[0069] The first grounding connecting piece 3 has a first mounting portion 31, which is mounted on the expansion circuit board 1 and electrically connected with a grounding electrode of the expansion circuit board 1. The main circuit board 2 is provided with a second grounding connecting piece 4 electrically connected with the grounding electrode. The first grounding connecting piece 3 is provided with at least a tab portion or a socket portion. The tab portion of the first grounding connecting piece 3 is connected with the socket portion of the second grounding connecting piece 4, or the socket portion of the first grounding connecting piece 3 is connected with the tab portion of the second grounding connecting piece 4, so as to realize electrical connection between the expansion circuit board 1 and the grounding electrode of the main circuit board 2.

[0070] As shown in Figure 2 and Figure 5 , in one specific embodiment of the present application, the first grounding connecting piece 3 further comprises a first body portion 33. The first mounting portion 31 and the first tab / socket portion are respectively arranged at two ends of the first body portion 33, and the first mounting portion 31 is mounted on a first surface of the expansion circuit board 1, and the first tab / socket portion is connected with a second socket / tab portion of the second grounding connecting piece 4 of the main circuit board 2 from a second surface of the expansion circuit board 1, so as to realize electrical connection between the expansion circuit board 1 and the main circuit board 2.

[0071] As shown in Figure 1 , Figure 6 and Figure 7 , in one specific embodiment of the present application, the expansion module further comprises an expansion housing 5. The expansion housing 5 is arranged on the expansion circuit board 1 to cover and protect the expansion circuit board 1, effectively preventing possible pollution of the circuit board caused by external factors such as dust. The expansion housing 5 is provided with a first plug-in window 51. The first plug-in window 51 covers at least the first electrical connecting piece 11 and the first tab / socket portion, so that the first electrical connecting piece 11 and the first tab / socket portion are butted against the main circuit board 2.

[0072] As Figure 6 and Figure 7 shown, in one specific embodiment of the present application, the extension shell 5 further comprises a first positioning part 52 for positioning and fixing the extension module. The first positioning part 52 can be specifically a positioning column arranged on the extension shell 5, and the positioning column is of an integral structure with the extension shell 5. The extension circuit board 1 has a card slot corresponding to the first positioning part 52, so as to realize positioning and fixing of the extension circuit board 1.

[0073] As Figure 1 and Figure 2 shown, the present application further provides an electronic device comprising the extension module and the device host 6 in the above-mentioned embodiments. The extension module comprises the extension circuit board 1 and the first ground connecting piece 3, and the device host 6 comprises the main circuit board 2 and the second ground connecting piece 4; the extension circuit board 1 has the first electric connecting piece 11, and the main circuit board 2 has the adapted second electric connecting piece 21, and the first electric connecting piece 11 is electrically connected with the second electric connecting piece 21; the first ground connecting piece 3 has the first mounting part 31, the first tab / slot part, and the second ground connecting piece 4 has the second mounting part 42 and the second slot / tab part adapted with the first tab / slot part; the first mounting part 31 is mounted on the extension circuit board 1 and is electrically connected with the ground electrode of the extension circuit board 1; the second mounting part 42 is mounted on the main circuit board 2 and is electrically connected with the ground electrode of the main circuit board 2; and the first tab / slot part is inserted with the second slot / tab part, so as to realize electrical connection between the ground electrodes of the extension circuit board 1 and the main circuit board 2.

[0074] As Figure 2 and Figure 5 shown, in one specific embodiment of the present application, the first ground connecting piece 3 further comprises a first body part 33. The first mounting part 31 and the first tab / slot part are respectively arranged at two ends of the first body part 33; and the first mounting part 31 is mounted on the first surface of the extension circuit board 1, and the first tab / slot part is connected with the second slot / tab part from the second surface of the extension circuit board 1. The second ground connecting piece 4 further comprises a second body part 43, and the second mounting part 42 and the second slot / tab part are arranged at one end of the second body part 43; and the second mounting part 42 is mounted on the first surface of the main circuit board 2, and the second slot / tab part is connected with the first tab / slot part from the first surface of the main circuit board 2; the second surface of the extension circuit board 1 is adjacent to the first surface of the main circuit board 2, so as to facilitate butt joint of the first tab / slot part of the first ground connecting piece 3 and the second slot / tab part of the second ground connecting piece 4.

[0075] As Figure 6 and Figure 9As shown, in one specific embodiment of the present application, the expansion module further comprises an expansion shell 5, which is arranged on the expansion circuit board 1, and the expansion shell 5 is provided with a first plug window 51, which covers at least the first electric connecting member 11 and the first plug / jack part. Correspondingly, the device host 6 further comprises a host shell 61, which is arranged on the main circuit board 2, and the host shell 61 is provided with a second plug window 62, which covers at least the second electric connecting member 21 and the second jack / plug part. The first plug window 51 and the second plug window 62 are arranged in position correspondence, so that the first electric connecting member 11 and the second electric connecting member 21 can realize butt joint through the first plug window 51 and the second plug window 62.

[0076] As shown, Figures 9 to 10 In one specific embodiment of the present application, the electronic device further comprises a positioning assembly, which comprises a first positioning part 52 arranged on the expansion shell 5, which can be specifically a positioning column arranged on the expansion shell 5. A second positioning part 63 arranged on the host shell 61 and matched with the first positioning part 52, which can be specifically a positioning groove. The positioning column on the expansion shell 5 is plugged into the positioning groove on the host shell 61, so as to realize the installation and positioning of the expansion shell 5 and the host shell 61. The positioning assembly further comprises a fastener 7, which is used to fasten the first positioning part 52 and the second positioning part 63, so as to realize the fastened installation of the expansion shell 5 and the host shell 61.

[0077] As shown, Figure 2 and Figure 5As shown in the drawings, in one embodiment of the present application, the first grounding connector 3 has a first body portion 33, a first mounting portion 31, a first tab portion 32 and a first socket portion 34. The second grounding connector 4 has a second body portion 43, a second mounting portion 42, a second socket portion 41 and a second tab portion 44. The first mounting portion 31 and the first socket portion 34 are both provided on one end of the first body portion 33, and the first mounting portion 31 is mounted on the first surface of the expansion circuit board 1, and the first tab portion 32 is provided on the other end of the first body portion 33 and is connected to the second socket portion 41 from the second surface of the expansion circuit board 1. The second mounting portion 42 and the second socket portion 41 are both provided on one end of the second body portion 43; and the second mounting portion 42 is mounted on the first surface of the main circuit board 2, and the second socket portion 41 is connected to the first tab portion 32 from the first surface of the main circuit board 2, and the second tab portion 44 is provided on the other end of the second body portion and is mounted on the second surface of the main circuit board 2. The second surface of the expansion circuit board 1 is adjacent to the first surface of the main circuit board 2, so that the first tab portion 32 of the first grounding connector 3 and the second socket portion 41 of the second grounding connector 4 are in abutment. In addition, the first grounding connector 3 and the second grounding connector 4 have the same structure and are made of the same substrate, which not only improves the commonality of parts and reduces material preparation, but also facilitates the process forming of the grounding connector. The specific length of the first tab portion 32 and the second tab portion 44 can be determined according to actual needs.

[0078] As shown in the drawings, Figure 2 and Figure 5 As shown in the drawings, in one embodiment of the present application, the first grounding connector 3 and the second grounding connector 4 are both integrally cast and formed of the same sheet metal spring piece. The first mounting portion 31 and the second mounting portion 42 are specifically provided as a soldering leg portion, one end of which is connected to the first body portion 33 or the second body portion 43, and the other end of which is electrically connected to the grounding electrode of the expansion circuit board 1 or the main circuit board 2. The number of soldering leg portions is at least one.

[0079] The first socket portion 34 and the second socket portion 41 each include two clamping portion, and the first tab portion 32 and the second tab portion 44 each include at least one tab. The clamping portion is provided to protrude from one side of the main circuit board 2 or the expansion circuit board 1, and the tab is inserted between the two clamping portions.

[0080] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An extension module, characterized in that, The utility model relates to an extension module and a device host (6), the extension module includes extension circuit board (1) and first ground connecting piece (3), the device host (6) includes main circuit board (2) and second ground connecting piece (4); The extension circuit board (1) has a first electrical connector (11), and the main circuit board (2) has a second electrical connector (21) matched with the first electrical connector (11); The first ground connecting piece (3) has a first mounting portion (31) and a first plug-in portion, and the second ground connecting piece (4) has a second mounting portion (42) and a second plug-in portion matched with the first plug-in portion; 2. The extension module of claim 1, wherein, The first mounting portion (31) is mounted on the extension circuit board (1) and electrically connected with a ground electrode of the extension circuit board (1), and the second mounting portion (42) is mounted on the main circuit board (2) and electrically connected with a ground electrode of the main circuit board (2); 3. The extension module of claim 1 or 2, wherein, The first plug-in portion is plugged into the second plug-in portion to electrically connect the ground electrodes of the extension circuit board (1) and the main circuit board (2).

4. The extension module of claim 3, wherein, The utility model relates to an extension module and a device host (6), the extension module includes extension circuit board (1) and first ground connecting piece (3), the device host (6) includes main circuit board (2) and second ground connecting piece (4); 5. An electronic device, comprising: The extension circuit board (1) has a first electrical connector (11), and the main circuit board (2) has a second electrical connector (21) matched with the first electrical connector (11); The first ground connecting piece (3) has a first mounting portion (31) and a first plug-in portion, and the second ground connecting piece (4) has a second mounting portion (42) and a second plug-in portion matched with the first plug-in portion; The first mounting portion (31) is mounted on the extension circuit board (1) and electrically connected with a ground electrode of the extension circuit board (1), and the second mounting portion (42) is mounted on the main circuit board (2) and electrically connected with a ground electrode of the main circuit board (2); The first plug-in portion is plugged into the second plug-in portion to electrically connect the ground electrodes of the extension circuit board (1) and the main circuit board (2). The utility model relates to an extension module and a device host (6), the extension module includes extension circuit board (1) and first ground connecting piece (3), the device host (6) includes main circuit board (2) and second ground connecting piece (4); The extension circuit board (1) has a first electrical connector (11), and the main circuit board (2) has a second electrical connector (21) matched with the first electrical connector (11); The first ground connecting piece (3) has a first mounting portion (31) and a first plug-in portion, and the second ground connecting piece (4) has a second mounting portion (42) and a second plug-in portion matched with the first plug-in portion; The first mounting portion (31) is mounted on the extension circuit board (1) and electrically connected with a ground electrode of the extension circuit board (1), and the second mounting portion (42) is mounted on the main circuit board (2) and electrically connected with a ground electrode of the main circuit board (2); The first plug-in portion is plugged into the second plug-in portion to electrically connect the ground electrodes of the extension circuit board (1) and the main circuit board (2).

6. The electronic device of claim 5, wherein, The first ground connecting piece (3) further comprises a first body part (33), the first mounting part (31) and the first blade / port part are respectively arranged at two ends of the first body part (33); and the first mounting part (31) is mounted on a first surface of the expansion circuit board (1), and the first blade / port part is connected to the second port / blade part from a second surface of the expansion circuit board (1); The second ground connecting piece (4) further comprises a second body part (43), the second mounting part (42) and the second port / blade part are arranged at one end of the second body part (43); and the second mounting part (42) is mounted on a first surface of the main circuit board (2), and the second port / blade part is connected to the first blade / port part from the first surface of the main circuit board (2); The second surface of the expansion circuit board (1) is adjacent to the first surface of the main circuit board (2).

7. The electronic device of claim 5 or 6, wherein The expansion module further comprises an expansion housing (5), the expansion housing (5) covers the expansion circuit board (1), and the expansion housing (5) is provided with a first plug-in window (51), the first plug-in window (51) covers at least the first electric connecting piece (11) and the first blade / port part; The device host (6) further comprises a host housing (61), the host housing (61) covers the main circuit board (2), and the host housing (61) is provided with a second plug-in window (62), the second plug-in window (62) covers at least the second electric connecting piece (21) and the second port / blade part; The first plug-in window (51) and the second plug-in window (62) are arranged in position correspondence.

8. The electronic device of claim 7, wherein, Further comprising a positioning assembly, the positioning assembly comprises a first positioning part (52) arranged on the expansion housing (5), a second positioning part (63) arranged on the host housing (61) and matched with the first positioning part (52), and a fastener (7) for fastening the first positioning part (52) and the second positioning part (63).

9. The electronic device of claim 5, wherein, The first ground connecting piece (3) has a first body part (33), a first mounting part (31), a first blade part (32) and a first port part (34), and the second ground connecting piece (4) has a second body part (43), a second mounting part (42), a second port part (41) and a second blade part (44); The first mounting part (31) and the first port part (34) are arranged at one end of the first body part (33), and the first mounting part (31) is mounted on a first surface of the expansion circuit board (1); the first blade part (32) is arranged at the other end of the first body part (33) and is connected to the second port part (41) from a second surface of the expansion circuit board (1); The second mounting portion (42) and the second socket portion (41) are arranged at one end of the second body portion (43); the second mounting portion (42) is mounted on the first surface of the main circuit board (2), the second socket portion (41) is connected to the first tab portion (32) from the first surface of the main circuit board (2), the second tab portion (44) is arranged at the other end of the second body, and the second tab portion (44) is mounted on the second surface of the main circuit board (2); The second surface of the expansion circuit board (1) is adjacent to the first surface of the main circuit board (2).

10. The electronic device of claim 9, wherein, The first ground connecting member (3) and the second ground connecting member (4) are integrally cast and formed as the same sheet metal spring member; The first mounting portion (31) and the second mounting portion (42) are arranged to at least include a soldering leg portion, one end of the soldering leg portion is connected to the first body portion (33) or the second body portion (43), and the other end of the soldering leg portion is electrically connected to the ground electrode of the expansion circuit board (1) or the main circuit board (2); The first socket portion (34) and the second socket portion (41) respectively include two clamping lobe portions, the first tab portion (32) and the second tab portion (44) respectively include a tab, the clamping lobe portions protrude from one side of the main circuit board (2) or the expansion circuit board (1); and the two clamping lobe portions are used for inserting the tab.

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