Board card fastening device, mainboard and server

Abstract

The invention relates to the technical field of computers, and discloses a board card fastening device, a mainboard and a server, the board card fastening device comprises a main body used for being arranged on a circuit board, a limiting notch is formed in the main body, the limiting notch is used for containing one side edge of a board card, and the limiting notch is used for containing the other side edge of the board card; the second connector of the board card is plugged with the first connector of the circuit board; the locking mechanism comprises an electromagnetic assembly arranged on the main body, a magnetic matching piece is further arranged on the main body and / or the board card, and the electromagnetic assembly can attract the magnetic matching piece so that the board card can be limited in the limiting notch. In the using process of the board card fastening device, the limiting notch of the board card fastening device can limit the board card, the electromagnetic assembly can be powered on and attract the magnetic matching piece so that the board card can be limited in the limiting notch, and therefore the connecting stability is guaranteed; the problem that the reliability of connection between a board card and a circuit board of a server in the prior art is poor can be solved.

Description

Technical Field

[0001] The present invention relates to the field of computer technology, and in particular to a board fastening device, a mainboard and a server. Background Art

[0002] A board card, such as an adapter card, is used on a circuit board of a computer or server, and can expand or convert the existing interface of the computer so that more devices can be connected or different types of interface standards can be used. In the related art, a board card includes a circuit board and a connector disposed on the circuit board, and can be plugged into the circuit board through the connector to achieve signal interconnection.

[0003] However, the reliability of the connection between the adapter card and the server mainly depends on the plug-in force between the connectors. However, factors such as the uncertainty of manual operation and vibration make it difficult to fully guarantee the stability of the connection by relying solely on the plug-in force. Summary of the invention

[0004] In view of this, the present invention provides a board fastening device, a mainboard and a server to solve the problem of poor connection reliability between the board and the circuit board of the server in the related art.

[0005] In a first aspect, the present invention provides a board fastening device, comprising:

[0006] The main body is used to be arranged on the circuit board, and a limiting notch is formed on the main body, and the limiting notch is used to accommodate a side edge of the board card and enable the second connector of the board card to be plugged into the first connector of the circuit board;

[0007] The locking mechanism comprises an electromagnetic component arranged on the main body. The main body and / or the board are also provided with a magnetic matching piece. The electromagnetic component can absorb the magnetic matching piece so that the board is limited in the limiting notch.

[0008] Beneficial effect: During use of the board card fastening device of the embodiment of the present invention, when the board card is plugged into place, the limiting notch of the board card fastening device can limit the board card, and at the same time the electromagnetic component can be energized and adsorb the magnetic mating part to limit the board card in the limiting notch, thereby ensuring the stability of the connection. Therefore, the board card fastening device of the embodiment of the present invention can overcome the problem of poor connection reliability between the board card and the circuit board of the server in the prior art.

[0009] In addition, the board and card fastening device has a simple structure, is easy to assemble, and is safe and reliable to use, and is easy to implement, promote, and apply.

[0010] In an optional embodiment, the electromagnetic assembly is connected to a backup power supply of the circuit board.

[0011] Beneficial effect: Through such a setting, the backup power supply on the circuit board can be used as the power supply for the electromagnetic component. On this basis, when the circuit board of the server is correctly assembled, the electromagnetic component can generate magnetic force so that when the board is in the limit gap, the electromagnetic component can attract the magnetic mating parts, and then limit the electromagnetic component at the limit gap to ensure that the board will not be displaced or poorly plugged in during power-on of the server.

[0012] When the server is powered off, the magnetic force of the electromagnetic assembly can disappear, and the magnetic matching piece can lose the attractive force of the electromagnetic assembly, thereby allowing the board card to be normally removed from the first connector.

[0013] Therefore, the board fastening device of the embodiment of the present invention not only saves a power supply, but also ensures that the electrical component board on the server will not be displaced or poorly plugged in. On this basis, the board fastening device is powered by the backup power supply of the circuit board, which can ensure that the board can only be unplugged after the circuit board is powered off, thereby preventing operations such as plugging and unplugging under power that may cause damage to the server.

[0014] In an optional embodiment, a limit hole is formed on the board, a mounting slot connected to the limit notch is provided on the main body, the electromagnetic component is arranged opposite to the mounting slot, the magnetic matching piece is a limit pin, the limit pin is arranged in the mounting slot, and the magnetic matching piece can drive the limit pin to pass through the limit hole when power is turned on;

[0015] The locking mechanism also includes:

[0016] The elastic member is connected between the limiting latch and the groove wall of the installation groove.

[0017] Beneficial effect: Through such a configuration, when the board needs to be limited on the circuit board, the electromagnetic component can be energized and attract the limiting pin, so that the limiting pin stretches the elastic part to extend outward and pass through the limiting hole, thereby limiting the board in the limiting notch.

[0018] When the board needs to be pulled out, the electromagnetic assembly loses its magnetism, the limit latch loses its attraction, and the limit latch retracts into the installation slot under the elastic restoring force of the elastic member, thereby allowing the board to be normally removed from the first connector.

[0019] In a second aspect, the present invention further provides a mainboard, comprising:

[0020] Main board body;

[0021] The board card fastening device provided in the first aspect of the present invention is arranged on the main board body.

[0022] Beneficial effect: The mainboard of the second aspect of the present invention includes or uses the board card fastening device of the first aspect of the present invention, and thus has its beneficial effect, that is, the mainboard of the embodiment of the present invention can overcome the problem of poor connection reliability between the board card and the mainboard of the server in the prior art.

[0023] Furthermore, since the connection reliability between the mainboard and the board in the second aspect of the present invention is high, it helps to improve system stability, data transmission efficiency, and extend the service life of the mainboard.

[0024] In addition, the mainboard has a simple structure, is easy to assemble, and is safe and reliable to use, making it easy to implement, promote, and apply.

[0025] In an optional implementation, a first connector is provided on the mainboard body, and the board card fastening devices are arranged in pairs and are respectively arranged at two ends of the first connector of the circuit board.

[0026] Beneficial effect: Through such an arrangement, at least one pair of board fastening devices can limit the parts of the board located on both sides of the first connector, so that the board fastening device can limit the board more reliably.

[0027] In an optional embodiment, the board fastening device includes a main body and a locking mechanism, the main body is arranged on the main board, a limiting notch and a mounting groove connected to the limiting notch are formed on the main body, the limiting notch is used to accommodate a side edge of the board, and the second connector of the board is plugged into the first connector of the main board;

[0028] The locking mechanism includes:

[0029] The electromagnetic component is arranged on the main body, and the electromagnetic component is arranged opposite to the installation slot;

[0030] The limit pin is arranged in the installation slot. The electromagnetic component can drive the limit pin to pass through the limit hole on the board when power is turned on. The limit pins of at least two locking mechanisms are respectively arranged on both sides of the mainboard along the length direction of the limit pin.

[0031] Beneficial effect: Through such a setting, the fastening effect of the board fastening device on the board can be further enhanced, ensuring that when the board is installed in place and is in normal operation, the board will not be displaced due to factors such as vibration, resulting in poor signal contact and affecting the normal operation of the server.

[0032] In a third aspect, the present invention further provides a server, comprising:

[0033] The mainboard provided by the second invention of the present invention has a first connector provided on the mainboard;

[0034] The board is provided with a second connector, and the second connector is used for plugging with the first connector.

[0035] Beneficial effect: The server of the third aspect of the present invention includes or uses the motherboard involved in the second aspect of the present invention, and thus has its beneficial effect, that is, the server of the embodiment of the present invention can overcome the problem of poor connection reliability between the board and the motherboard of the server in the prior art.

[0036] Furthermore, since the connection reliability between the mainboard and the board of the server of the second aspect of the present invention is high, it helps to improve system stability, data transmission efficiency, and extend the service life of the mainboard.

[0037] In addition, the server has a simple structure, is easy to assemble, and is safe and reliable to use, making it easy to implement, promote, and apply.

[0038] In an optional implementation, the board includes:

[0039] A board body, on which a welding pad is provided;

[0040] The limiting hole passes through the pad and the board body.

[0041] Beneficial effect: Since the board fastening device includes an electromagnetic component and a limit pin, the limit pin is arranged in the installation slot, and the magnetic matching part can drive the limit pin to pass through the limit hole when power is turned on. Therefore, the limit hole needs to abut against the limit pin during use to limit the board. The limit hole is set as a metal hole to ensure that its own structural strength is high, and the board fastening device can ensure that the board is fastened more reliably.

[0042] In an optional implementation, the server further includes:

[0043] The in-position detection module is arranged on the board fastening device and can send an in-position signal to the mainboard when the second connector of the board is plugged into the first connector of the mainboard.

[0044] Beneficial effect: The in-place detection module can send an in-place signal to the mainboard when the board is installed in place, so that when the board is not installed in place, the operator can promptly know and check the connection between the board and the mainboard, thereby avoiding the unstable connection between the mainboard and the board that affects the effectiveness of data transmission.

[0045] In an optional embodiment, the board fastening device includes:

[0046] The main body is used to be arranged on the main board, and a limiting notch and a mounting groove are formed on the main body. The limiting notch is used to accommodate a side edge of the board and enable the second connector of the board to be plugged with the first connector of the main board, and the mounting groove is connected with the limiting notch;

[0047] The locking mechanism includes an electromagnetic component, which is arranged on the main body, and the electromagnetic component is arranged opposite to the mounting groove;

[0048] A limit pin is arranged in the installation slot, and the magnetic matching part can drive the limit pin to pass through the limit hole when power is turned on. The limit pins of at least two locking mechanisms are respectively arranged on both sides of the main board along the length direction of the limit pin;

[0049] The elastic part is connected between the limit pin and the groove wall of the installation groove. The in-place detection module includes a logic device, which is connected to the elastic part. The elastic part and the limit pin are both made of conductive materials. The soldering pad of the board is grounded. When the second connector of the board is plugged into the first connector of the mainboard, the limit pin can be connected to the soldering pad.

[0050] Beneficial effect: Through such configuration, when the mainboard of the embodiment of the present invention is in use, the in-place judgment signal of the logic device can be designed to be a high level when the board is not plugged in place.

[0051] When the board is plugged in, the limit pin can be inserted into the limit hole and connected to the metal pad on the board, so that the logic device is connected to the pad through the elastic part and the limit pin. Since the pad is grounded, after the pad is connected to the logic device, the logic device's in-place signal level will be pulled to 0, so that the mainboard can judge whether the board is plugged in by the high and low levels of the logic device's in-place signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0053] Figure 1 A mainboard according to an embodiment of the present invention;

[0054] Figure 2 for Figure 1 The board fastening device of the mainboard shown;

[0055] Figure 3 for Figure 2 A cross-sectional view of the board fastening device shown;

[0056] Figure 4 A board of a server in an embodiment of the present invention;

[0057] Figure 5 for Figure 4 An enlarged view of the limiting hole of the board of the server shown;

[0058] Figure 6This is another implementation of the mainboard of the embodiment of the present invention.

[0059] Description of reference numerals:

[0060] 1. Board fastening device; 101. Main body; 1011. Limiting notch; 1012. Mounting slot; 102. Locking mechanism; 1021. Magnetic matching part; 1022. Elastic part; 1023. Electromagnetic component;

[0061] 2. Board; 201. Limiting hole; 202. Solder pad; 203. Board body; 204. Second connector;

[0062] 3. Circuit board; 301. Main board body; 302. First connector. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0064] With the continuous development of science and technology, the specifications and standards followed by computer hardware devices for data transmission are emerging in an endless stream. As an important component of computer hardware, the board 2 can be connected to the circuit board 3 through a slot to expand the functions and performance of the computer. They can be graphics cards, network cards, sound cards, etc. Each type of board 2 has its own unique role and function.

[0065] Take the adapter card as an example. The adapter card is a hardware device used to connect devices with different interfaces to achieve data transmission and signal conversion functions. They are usually used to expand the interface of computers or other electronic devices to adapt to different hardware configurations and requirements. The design and application of adapter cards cover a wide range of fields, including data centers, servers, personal computers, industrial automation, communications, scientific research and other industries.

[0066] In the related art, multiple printed circuit boards 3 are often interconnected through connectors, wherein the connectors include but are not limited to gold finger or board-to-board connectors, etc. However, the gold finger connector and the board-to-board connector are usually fixed on the two boards 2 that need to be interconnected by welding or crimping, so as to achieve signal connection between the two boards 2 through docking and ensure connection stability.

[0067] The connection reliability between gold fingers, connectors and board-to-board connectors depends on the plug-in force between connectors. However, during the assembly, transportation and operation of the server, there are factors such as vibration or uncertainty caused by manual operation, which makes it difficult to fully guarantee the stability of the connection by relying solely on the plug-in force.

[0068] Especially for small-size boards 2, whose connectors are usually CEM connectors or GenZ connectors, slight angle deviations during assembly can easily lead to poor or even interrupted contact of interconnect signals, thereby affecting the normal operation of internal equipment or integrated circuits in the server, reducing the overall work efficiency of the server, and even shortening the service life of the server, and significantly increasing subsequent maintenance costs and time investment.

[0069] Combine the following Figures 1 to 6 , describing an embodiment of the present invention.

[0070] According to an embodiment of the present invention, on the one hand, a board and card fastening device 1 is provided, comprising a main body 101 and a locking mechanism 102. The main body 101 is used to be arranged on a circuit board 3, and a limiting notch 1011 is formed on the main body 101. The limiting notch 1011 is used to accommodate a side edge of the board and card 2, and to allow the second connector 204 of the board and card 2 to be plugged with the first connector 302 of the circuit board 3. The locking mechanism 102 comprises an electromagnetic component 1023 arranged on the main body 101, and a magnetic matching piece 1021 is also arranged on the main body 101 and / or the board and card 2. The electromagnetic component 1023 can absorb the magnetic matching piece 1021, so that the board and card 2 is limited in the limiting notch 1011.

[0071] During use of the board card fastening device 1 of the embodiment of the present invention, when the board card 2 is plugged into place, the limiting notch 1011 of the board card fastening device 1 can limit the board card 2, and at the same time the electromagnetic component 1023 can be energized and adsorb the magnetic matching part 1021 to limit the board card 2 in the limiting notch 1011, thereby ensuring the stability of the connection. Therefore, the board card fastening device 1 of the embodiment of the present invention can overcome the problem of poor connection reliability between the board card 2 and the circuit board 3 of the server in the prior art.

[0072] In addition, the board and card fastening device 1 has a simple structure, is easy to assemble, and is safe and reliable to use, and is easy to implement and promote.

[0073] It should be noted that in the embodiment of the present application, the shape of the electromagnetic component 1023 is not limited. For example, Figure 3 As shown, the electromagnetic assembly 1023 includes an electromagnetic sheet, which can reduce the space required for the electromagnetic assembly 1023 and make the structure of the board fastening device 1 more compact.

[0074] The magnetic fitting part 1021 may be made of a material such as iron, cobalt, nickel, etc., which can be attracted in a magnetic field.

[0075] The width of the limiting notch 1011 is preferably slightly larger than the thickness of the board 2 , so that the board 2 can be easily inserted into the limiting notch 1011 .

[0076] As a convertible implementation, the limiting notch 1011 may also be selected to be interference fit with the board 2 , thereby playing a certain limiting role on the board 2 .

[0077] The circuit board 3 may be selected as a main board. As a convertible implementation, the circuit board 3 may also be selected as a card connected to the main board through other slots for expanding the computer functions.

[0078] The board 2 may be an adapter card. As a convertible implementation, in an embodiment not shown in the drawings, the board 2 may also be a graphics card, a network card or a sound card.

[0079] In one embodiment, the electromagnetic assembly 1023 is connected to a backup power source of the circuit board 3 .

[0080] Through such a configuration, the backup power supply on the circuit board 3 can be used as the power supply for the electromagnetic component 1023. On this basis, when the circuit board 3 of the server is correctly assembled, the electromagnetic component 1023 can generate magnetic force so that when the board 2 is in the limiting notch 1011, the electromagnetic component 1023 can attract the magnetic matching part 1021, and then limit the electromagnetic component 1023 at the limiting notch 1011, so as to ensure that the board 2 will not be displaced or poorly plugged in during power-on of the server.

[0081] When the server is powered off, the magnetic force of the electromagnetic assembly 1023 disappears, and the magnetic fitting member 1021 loses the attractive force of the electromagnetic assembly 1023 , thereby allowing the board card 2 to be normally removed from the first connector 302 .

[0082] Therefore, the board card fastening device 1 of the embodiment of the present invention not only saves a power supply, but also can ensure that the electrical device board card 2 on the server will not be displaced or poorly plugged in. On this basis, the backup power supply of the circuit board 3 is used to power the board card fastening device 1, and it can also ensure that the board card 2 can only be unplugged after the circuit board 3 is powered off, thereby preventing operations such as plugging and unplugging under power that may cause damage to the server.

[0083] As a convertible implementation, the board fastening device 1 further includes an independent power source, and the electromagnetic component 1023 is connected to the independent power source.

[0084] In the description of this application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0085] In one embodiment, a limiting hole 201 is formed on the board 2, a mounting groove 1012 communicating with the limiting notch 1011 is provided on the main body 101, the electromagnetic assembly 1023 is arranged opposite to the mounting groove 1012, and the locking mechanism 102 further includes a limiting latch and an elastic member 1022.

[0086] The limit pin is arranged in the installation slot 1012, and the magnetic matching member 1021 can drive the limit pin to pass through the limit hole 201 when the power is turned on. The elastic member 1022 is connected between the limit pin and the slot wall of the installation slot 1012.

[0087] By such arrangement, when the board 2 needs to be limited on the circuit board 3, the electromagnetic assembly 1023 can be energized and attract the limiting pin, so that the limiting pin stretches the elastic member 1022 to extend outward and pass through the limiting hole 201, thereby limiting the board 2 in the limiting notch 1011.

[0088] When the board 2 needs to be pulled out, the electromagnetic assembly 1023 can lose its magnetism, the limit pin can lose its attraction, and the limit pin can retract into the installation slot 1012 under the elastic restoring force of the elastic member 1022, thereby allowing the board 2 to be removed normally from the first connector 302.

[0089] In the embodiment of the present application, the number and specific shape of the limiting holes 201 are not limited. For example, the limiting holes 201 can be circular, rectangular, triangular, elliptical or irregular in shape.

[0090] The specific shape of the limiting hole 201 can be selected according to the size of the board 2 and the requirements of the installation strength, and can be one or more.

[0091] In a preferred embodiment, when the elastic member 1022 is not in a stretched state, the limit pin is completely in the mounting groove 1012 and does not protrude from the mounting groove 1012. By such a configuration, it is possible to avoid interference between the limit pin and the edge of the board 2 when the board 2 is inserted into the limit notch 1011.

[0092] As a convertible implementation method, a guiding slope is formed on the limit pin, and along the plug-in direction of the board 2, the guiding slope is inclined toward the direction in which the limit pin extends. Through such a setting, when the board 2 is inserted into the limit notch 1011, the board 2 can apply pressure toward the limit pin through the guiding slope, thereby driving the limit pin to retract into the installation groove 1012, so as to avoid the limit pin hindering the board 2 from being limited in the installation groove 1012.

[0093] In one embodiment, the cross-sectional area of ​​the limiting pin is set to be slightly smaller than the area of ​​the limiting hole 201 , so that the limiting pin can smoothly pass through the limiting hole 201 on the board 2 when extended.

[0094] As a convertible implementation, the cross-sectional area of ​​the limiting pin is set to be consistent with the area of ​​the limiting hole 201 , which can prevent the board 2 from shaking relative to the limiting pin after being limited in the limiting hole 201 .

[0095] As a convertible implementation, the magnetic fitting part 1021 is formed on the board 2. When the second connector 204 of the board 2 is plugged into the first connector 302 of the circuit board 3, the electromagnetic component 1023 can be arranged relative to the magnetic fitting part 1021. When the board 2 needs to be limited on the second connector 204, the electromagnetic component 1023 can attract the magnetic fitting part 1021 to limit the board 2 in the limiting notch 1011.

[0096] When the board card 2 needs to be removed from the first connector 302 , the electromagnetic assembly 1023 can be powered off and lose its magnetism, thereby allowing the board card 2 to be removed from the first connector 302 normally.

[0097] It should be noted that, in the embodiment of the present application, the specific shape of the magnetic matching member 1021 is not limited. For example, Figure 6 As shown, the magnetic matching piece 1021 may be rectangular. As a changeable implementation, in an embodiment not shown in the drawings, the magnetic matching piece 1021 may also be circular, elliptical, triangular or irregular in shape.

[0098] In an optional embodiment, the elastic member 1022 is a spring.

[0099] As a convertible embodiment, the elastic member 1022 can also be an elastic band.

[0100] According to an embodiment of the present invention, on the other hand, a mainboard is provided, comprising a mainboard body 301 and a board fastening device 1. The board fastening device 1 of the embodiment of the present invention is arranged on the mainboard body 301.

[0101] The mainboard of the second aspect of the present invention includes or uses the board card fastening device 1 of the first aspect of the present invention, and thus has its beneficial effect, that is, the mainboard of the embodiment of the present invention can overcome the problem of poor connection reliability between the board card 2 of the server and the mainboard in the prior art.

[0102] Furthermore, since the connection reliability between the mainboard and the board 2 of the second aspect of the present invention is high, it helps to improve system stability, data transmission efficiency, and extend the service life of the mainboard.

[0103] In addition, the mainboard has a simple structure, is easy to assemble, and is safe and reliable to use, making it easy to implement, promote, and apply.

[0104] It should be noted that in the embodiment of the present application, there is no restriction on the connection method between the board fastening device 1 and the mainboard.

[0105] For example, in a preferred embodiment, the board fastening device 1 can be optionally fixed on the mainboard body 301 by welding.

[0106] As a convertible implementation, the board card fastening device 1 can also be fixed on the mainboard body 301 by crimping or bonding.

[0107] In one embodiment, a first connector 302 is disposed on the mainboard body 301 , and the board card fastening devices 1 are arranged in pairs and are disposed at two ends of the first connector 302 of the circuit board 3 .

[0108] By such arrangement, at least one pair of board fastening devices 1 can limit the portions of the board 2 located at both ends of the first connector 302 , so that the board fastening device 1 can limit the board 2 more reliably.

[0109] It should be noted that, in the embodiment of the present application, the number of the board fastening devices 1 corresponding to each first connector 302 is not limited. For example, Figure 1 As shown, a board fastening device 1 is disposed at each end of the first connector 302 .

[0110] As a convertible implementation, two or three pairs of board fastening devices 1 may be optionally provided at both ends of the first connector 302 .

[0111] As another alternative implementation, the board fastening device 1 is provided at only one end of the first connector 302 .

[0112] In one embodiment, the board card fastening device 1 also includes a main body 101 and a locking mechanism 102. The main body 101 is arranged on the circuit board 3. A limiting notch 1011 and an installation groove 1012 connected to the limiting notch 1011 are formed on the main body 101. The limiting notch 1011 is used to accommodate a side edge of the board card 2 and enable the second connector 204 of the board card 2 to be plugged into the first connector 302 of the circuit board 3.

[0113] The locking mechanism 102 includes an electromagnetic component 1023 and a limit pin. The electromagnetic component 1023 is disposed on the main body 101, and the electromagnetic component 1023 is disposed opposite to the mounting groove 1012. The limit pin is disposed in the mounting groove 1012, and the magnetic matching member 1021 can drive the limit pin to pass through the limit hole 201 when powered on. The limit pins of at least two locking mechanisms 102 are respectively disposed on both sides of the circuit board 3 along the length direction of the limit pin.

[0114] Through such a configuration, the fastening effect of the board fastening device 1 on the board 2 can be further enhanced, ensuring that when the board 2 is installed in place and is in normal operation, the board 2 will not be displaced due to factors such as vibration, resulting in poor signal contact and affecting the normal operation of the server.

[0115] As a convertible implementation method, Figure 1 As shown, the limiting pins of at least two locking mechanisms 102 are respectively arranged on the same side of the circuit board 3 along the length direction of the limiting pins.

[0116] According to an embodiment of the present invention, on the other hand, a server is provided, comprising a board 2 and a mainboard according to the second aspect of the present invention, wherein a first connector 302 is provided on the mainboard; a second connector 204 is provided on the board 2, and the second connector 204 is used to be plugged with the first connector 302.

[0117] The server of the third aspect of the present invention includes or uses the mainboard involved in the second aspect of the present invention, and thus has its beneficial effect, that is, the server of the embodiment of the present invention can overcome the problem of poor connection reliability between the board 2 and the mainboard of the server in the prior art.

[0118] Furthermore, since the connection reliability between the mainboard and the board 2 of the server of the second aspect of the present invention is high, it helps to improve system stability, data transmission efficiency, and extend the service life of the mainboard.

[0119] In addition, the server has a simple structure, is easy to assemble, and is safe and reliable to use, making it easy to implement, promote, and apply.

[0120] In one embodiment, Figure 4 and Figure 5As shown, a limiting hole 201 is formed on the board 2. In a preferred embodiment, the limiting hole 201 is a metal hole.

[0121] Exemplarily, in a preferred embodiment, the board 2 includes a board body 203. A soldering pad 202 is disposed on the board body 203, and the limiting hole 201 passes through the through hole and the soldering pad 202.

[0122] Since the board and card fastening device 1 includes the electromagnetic assembly 1023 and the limit pin, the limit pin is arranged in the installation slot 1012, and the magnetic matching part 1021 can drive the limit pin to pass through the limit hole 201 when the power is turned on. Therefore, the limit hole 201 needs to abut against the limit pin during use to limit the board and card 2. The limit hole 201 is set as a metal hole to ensure that its own structural strength is high, and it can ensure that the board and card fastening device 1 fastens the board and card 2 more reliably.

[0123] As a changeable implementation, the metal hole can also be made by plating metal on the board body 203 of the board 2 and then punching the hole.

[0124] As another alternative implementation, the limiting hole 201 may also be an insulating hole and directly formed on the board surface of the board 2 .

[0125] It should be noted that in the embodiment of the present application, the specific positions of the limiting holes 201 are not limited, and the distribution positions of the limiting holes 201 can be specifically set according to the design requirements of the board 2.

[0126] The second connector 204 is used to provide signal connection. The second connector 204 is preferably but not limited to a gold finger, and can be exemplarily a gold finger that complies with the PCIe CEM specification or a gold finger that complies with the SFF-TA-1002 specification.

[0127] In one embodiment, the server further comprises a position detection module which is arranged on the board fastening device 1 and can send a position signal to the mainboard when the second connector 204 of the board 2 is plugged into the first connector 302 of the mainboard.

[0128] The in-place detection module can send an in-place signal to the mainboard when the board 2 is installed in place, so that when the board 2 is not installed in place, the operator can promptly know and check the connection between the board 2 and the mainboard, thereby avoiding the unstable connection between the mainboard and the board 2 affecting the effectiveness of data transmission.

[0129] In one embodiment, the board card fastening device 1 includes a main body 101, a locking mechanism 102, a limiting latch and an elastic member 1022, wherein the main body 101 is used to be set on a main board, and a limiting notch 1011 is formed on the main body 101, and the limiting notch 1011 is used to accommodate a side edge of the board card 2 and enable the second connector 204 of the board card 2 to be plugged into the first connector 302 of the circuit board 3.

[0130] The locking mechanism 102 includes an electromagnetic component 1023, which is arranged on the main body 101. The electromagnetic component 1023 is arranged opposite to the installation slot 1012. The limit pin is arranged in the installation slot 1012. The magnetic matching part 1021 can drive the limit pin to pass through the limit hole 201 when the power is turned on. The limit pins of at least two locking mechanisms 102 are respectively arranged on both sides of the mainboard along the length direction of the limit pin. The elastic member 1022 is connected between the limit pin and the groove wall of the installation slot 1012. The in-place detection module includes a logic device, which is connected to the elastic member 1022. The elastic member 1022 and the limit pin are both made of conductive material. The soldering pad 202 of the board 2 is grounded. When the second connector 204 of the board 2 is plugged into the first connector 302 of the mainboard, the limit pin can be connected to the soldering pad 202.

[0131] By such arrangement, when the mainboard of the embodiment of the present invention is in use, the in-place determination signal of the logic device can be designed to be a high level when the board 2 is not plugged in place.

[0132] When the board 2 is plugged in, the limit pin can be inserted into the limit hole 201 and connected to the metal pad 202 on the board 2, so that the logic device is connected to the pad 202 through the elastic member 1022 and the limit pin. Since the pad 202 is grounded, after the pad 202 is connected to the logic device, the logic device's in-place signal level will be pulled to 0, so that the mainboard can judge whether the board 2 is plugged in by the high and low levels of the logic device's in-place signal.

[0133] The logic device is a component that realizes the logic function in the electronic circuit, preferably but not limited to a programmable logic device or other digital signal logic judgment device. The logic device is preferably but not limited to being connected to the mainboard CPLD (complex programmable logic device) or BMC (baseboard management controller) for communication, so that the mainboard CPLD or BMC can judge whether the adapter card is installed in place through the arrival signal.

[0134] As a convertible implementation, in an embodiment not shown in the accompanying drawings, a sensor is provided on the board fastening device 1, and the sensor is preferably but not limited to a proximity switch or a micro switch light. The sensor can send a position signal to the mainboard after the board 2 is installed in place.

[0135] As another convertible implementation, in an embodiment not shown in the drawings, an LED light is provided on the board fastening device 1 or the mainboard, and the LED light can light up after the board 2 is installed in place, so that the operator can intuitively know that the board 2 has been installed in place.

[0136] Specifically, the LED lamp can be optionally arranged in the same circuit with the limit pin and the solder pad 202. When the board 2 is installed in place, the circuit where the LED lamp is located can be turned on, so that the LED lamp lights up.

[0137] Next, the assembly process of the server of the third aspect of the present invention is described:

[0138] When assembling the server, the board 2 can be installed on the main board of the server in a vertical direction, and the second connector 204 is correspondingly plugged into the first connector 302, and the upper limit hole 201 of the board 2 is correspondingly located at the position of the limit pin of the board fastening device 1. After the server is assembled, the server is powered on normally, the backup power supply works, the electromagnetic assembly 1023 generates magnetic force, and the limit pin is affected by the magnetic force, extends and is inserted into the limit hole 201 of the board 2, thereby fixing the board 2.

[0139] When the limiter needs to be removed, the server needs to be powered off first, and the limiter pin is not affected by the electromagnetic force and returns to its original position under the action of the elastic member 1022. Only then can the limiter be removed.

[0140] In summary, the board fastening device 1 of the first aspect of the present invention, the mainboard of the second aspect of the present invention, and the server of the third aspect of the present invention have the following beneficial effects:

[0141] 1. The limiting hole 201 and the corresponding board fastening device 1 can ensure to the greatest extent that the adapter card can be installed in place when the server is assembled.

[0142] 2. The electromagnetic fastening device is powered by the server's backup power supply, which can ensure that the server will not be poorly plugged in due to factors such as vibration during operation.

[0143] 3. An electromagnetic fastening device is used to "lock" the connection between the board cards 2, so that assembly and maintenance personnel cannot remove the adapter card while the server is powered on. When the adapter card needs to be removed, the server must be powered off first so that the limit latch can return to its original position. At this time, the adapter card can be removed normally. This design ensures that the server must be completely powered off when the adapter card is inserted, and eliminates operations such as plugging and unplugging under power that may cause damage to the server.

[0144] The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician in the field can easily make changes or variations within the technical scope disclosed in the present invention, and such changes or variations should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims. As long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A board fastening device, characterized in that: include: A main body (101) is used for being arranged on a circuit board (3), a limiting notch (1011) being formed on the main body (101), the limiting notch (1011) being used for accommodating a side edge of a board (2) and enabling the second connector (204) of the board (2) to be plugged into the first connector (302) of the circuit board (3); The locking mechanism (102) comprises an electromagnetic component (1023) arranged on the main body (101); a magnetic matching piece (1021) is also arranged on the main body (101) and / or the board (2); the electromagnetic component (1023) is capable of adsorbing the magnetic matching piece (1021) so that the board (2) is limited in the limiting notch (1011).

2. The board fastening device according to claim 1, characterized in that: The electromagnetic component (1023) is connected to the backup power supply of the circuit board (3).

3. The board fastening device according to claim 1, characterized in that: A limiting hole (201) is formed on the board (2); a mounting groove (1012) communicating with the limiting notch (1011) is provided on the main body (101); the electromagnetic component (1023) is arranged opposite to the mounting groove (1012); the magnetic matching component (1021) is a limiting pin, the limiting pin is arranged in the mounting groove (1012); and the magnetic matching component (1021) can drive the limiting pin to pass through the limiting hole (201) when power is turned on; The locking mechanism (102) further comprises: The elastic member (1022) is connected between the limiting latch and the groove wall of the installation groove (1012).

4. A motherboard, characterized in that: include: Main board body (301); The board card fastening device (1) as claimed in any one of claims 1 to 3 is arranged on the main board body (301).

5. The mainboard according to claim 4, characterized in that: The mainboard body (301) is provided with a first connector (302), and the board card fastening devices (1) are arranged in pairs and are respectively arranged at the two ends of the first connector (302) of the circuit board (3).

6. The mainboard according to claim 5, characterized in that: Said: The board card fastening device (1) comprises a main body (101) and a locking mechanism (102); the main body (101) is arranged on a main board; a limiting notch (1011) and a mounting groove (1012) connected to the limiting notch (1011) are formed on the main body (101); the limiting notch (1011) is used to accommodate a side edge of a board card (2) and enable a second connector (204) of the board card (2) to be plugged into a first connector (302) of the main board; The locking mechanism (102) comprises: An electromagnetic component (1023) is disposed on the main body (101), and the electromagnetic component (1023) is disposed opposite to the mounting groove (1012); A limit pin is arranged in the installation slot (1012); the electromagnetic component (1023) can drive the limit pin to pass through the limit hole (201) on the board (2) when power is turned on; and at least two limit pins of the locking mechanism (102) are respectively arranged on both sides of the mainboard along the length direction of the limit pin.

7. A server, characterized in that: include: The mainboard according to any one of claims 4 to 6, wherein a first connector (302) is provided on the mainboard; A board (2) is provided with a second connector (204), wherein the second connector (204) is used for plugging with the first connector (302).

8. The server according to claim 7, characterized in that: The board (2) comprises: A plate body (203) having a welding pad (202) disposed thereon; The limiting hole (201) passes through the welding pad (202) and the plate body (203).

9. The server according to claim 8, characterized in that: Also includes: The in-position detection module is arranged on the board fastening device (1) and is capable of sending an in-position signal to the mainboard when the second connector (204) of the board (2) is plugged into the first connector (302) of the mainboard.

10. The server according to claim 9, characterized in that The board card fastening device (1) comprises: A main body (101) is used to be arranged on a main board, a limiting notch (1011) and a mounting groove (1012) are formed on the main body (101), the limiting notch (1011) is used to accommodate a side edge of a board (2) and enable the second connector (204) of the board (2) to be plugged into the first connector (302) of the main board, and the mounting groove (1012) is connected to the limiting notch (1011); The locking mechanism (102) comprises an electromagnetic component (1023) which is arranged on the main body (101), and the electromagnetic component (1023) is arranged opposite to the installation groove (1012); A limit pin is arranged in the installation groove (1012), the magnetic matching part (1021) can drive the limit pin to pass through the limit hole (201) when power is turned on, and the limit pins of at least two locking mechanisms (102) are respectively arranged on both sides of the mainboard along the length direction of the limit pin; The elastic member (1022) is connected between the limit latch and the groove wall of the installation groove (1012); the in-position detection module includes a logic device, which is connected to the elastic member (1022); the elastic member (1022) and the limit latch are both made of conductive material; the soldering pad (202) of the board (2) is grounded; when the second connector (204) of the board (2) is plugged into the first connector (302) of the mainboard, the limit latch can be connected to the soldering pad (202).

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