CN218383955U - Board card fixing device and electronic equipment - Google Patents

Abstract

The application provides a integrated circuit board fixing device and electronic equipment, integrated circuit board fixing device includes supporting component and coupling assembling. The supporting assembly comprises a supporting frame and a board card interface arranged on the supporting frame, and the board card interface is used for being in butt joint with a board card. The connecting assembly comprises a limiting piece, and the limiting piece is rotatably connected with the supporting frame to switch between an unlocking position and a locking position. The locating part includes joint portion and backstop portion, and when the locating part was located latched position, joint portion joint was on the wane of integrated circuit board, and backstop portion and braced frame butt. And the board card is convenient to mount and dismount without screw fixation.

Description

Board card fixing device and electronic equipment

Technical Field

The application belongs to the field of computers, and particularly relates to a board fixing device and electronic equipment.

Background

At present, computers are widely applied to daily life, and with the increasing use frequency of network equipment such as computers and the like, the requirements on bandwidth, flexibility and performance are increased, and the PCE-E board card directly determines the communication performance of the network.

The existing PEI-E board card is a network card with a PCI-E interface and is used as an expansion port in mainboard-level connection. Specifically, the PCI-E based expansion card can be inserted into PCI-E slots in equipment mainboards such as a host, a server and a network switch, and the special PCI-E slot on the computer host corresponds to the PCI-E board card.

However, the PCI-E board and the host need to be fixed by screws during assembly, and a special tool is needed during installation and disassembly of the PCI-E board, so that the installation and disassembly are inconvenient.

SUMMERY OF THE UTILITY MODEL

To prior art's not enough, this application provides a board card fixing device and electronic equipment, does not need the screw fixation, can make the board card installation convenient with dismantle.

The application provides a board card fixing device, including supporting component and coupling assembling. The supporting assembly comprises a supporting frame and a board card interface arranged on the supporting frame, and the board card interface is used for being in butt joint with a board card. The connecting assembly comprises a limiting piece, and the limiting piece is rotatably connected with the supporting frame so as to be switched between an unlocking position and a locking position. The locating part includes joint portion and backstop portion, and when the locating part was located latched position, joint portion joint was on the wane of integrated circuit board, and backstop portion and braced frame butt.

Optionally, the limiting member is connected to the supporting frame through a first rotating shaft, and the clamping portion and the stopping portion are located in different directions of the first rotating shaft respectively.

Optionally, the first rotating shaft is parallel to a plane where the board card interface is located, so that the limiting member is close to or away from the board card interface when rotating around the first rotating shaft.

Optionally, the clamping portion includes a first clamping arm and a second clamping arm. First joint arm is located one side that is close to the integrated circuit board interface of second joint arm, the first end of first joint arm and the first end interconnect of second joint arm, and the second end of first joint arm and the second end of second joint arm all stretch out to the direction parallel that deviates from first pivot, forms the spacing space that is used for the wane of joint integrated circuit board between first joint arm and the second joint arm.

Optionally, the clamping portion further includes a first force application portion, and the first force application portion is connected to one side of the first clamping arm, which is away from the second clamping arm.

Optionally, the second clamping arm is an arc-shaped arm, and a second end of the second clamping arm bends to a side away from the first clamping arm.

Optionally, the supporting frame includes a side wall located at a side of the board fastening interface, the limiting member is rotatably connected to the side wall through a first rotating shaft, and a notch for the stopping portion to abut against is formed in the side wall.

Optionally, the stopping portion is located at the first end of the first clamping arm and extends out of the sidewall, and when the limiting member is in the locking state, the stopping portion abuts against the notch.

Optionally, the stopping portion is connected with a second force application portion, and when the stopping portion abuts against the notch, the second force application portion extends out of the notch.

The application provides an electronic device, which comprises a board card and a board card fixing device, wherein the board card is plugged into a board card interface in the board card fixing device.

The application provides a board card fixing device and electronic equipment, board card fixing device includes supporting component and coupling assembling. The supporting assembly comprises a supporting frame and a board card interface arranged on the supporting frame, and the board card interface is used for being in butt joint with a board card. The connecting assembly comprises a limiting piece, and the limiting piece is rotatably connected with the supporting frame so as to be switched between an unlocking position and a locking position. The locating part includes joint portion and backstop portion, and when the locating part was located latched position, joint portion joint was on the wane of integrated circuit board, and backstop portion and braced frame butt. And the board card is convenient to mount and dismount without screw fixation.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a board card fixing device provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of the board fixing device and the unlocking of the board provided in the embodiment of the present application;

fig. 3 is a schematic structural view illustrating locking of a board fixing device and a board provided in the embodiment of the present application;

fig. 4 is a schematic structural diagram of the abutment between the stopper and the support frame provided in the embodiment of the present application;

fig. 5 is a schematic structural diagram of a separation between a stopper portion and a supporting frame according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Description of reference numerals:

100-board card fixing device and electronic equipment;

200-a board card fixing device;

300-an electronic device;

210-a support assembly;

220-a connection assembly;

230-a first shaft;

211-a support frame;

212-board card interface;

2111-side wall;

2112-gap;

221-a limit stop;

222-a clamping part;

223-a stop;

2221-first snap-in arm;

2222-second snap arm;

2223-a first force application part;

2224-limit space;

2231-a second force application portion;

310-board card;

311-wane.

Detailed Description

In order to make the aforementioned objects, features and advantages of the embodiments of the present application more comprehensible, embodiments of the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The existing PEI-E board card is a network card with a PCI-E interface and is used as an expansion port in mainboard-level connection. Specifically, the PCI-E based expansion card can be inserted into PCI-E slots in equipment mainboards such as a host, a server and a network switch, and the special PCI-E slot on the computer host corresponds to the PCI-E board card.

However, the PCI-E board and the host need to be fixed by screws during assembly, and a special tool is needed during installation and disassembly of the PCI-E board, so that the installation and disassembly are inconvenient.

In order to solve the above problem, the present application provides a board fixing device and an electronic apparatus, and the board fixing device includes a supporting component and a connecting component. The limiting part of the connecting assembly is rotatably connected with the supporting frame of the supporting assembly. The clamping portion and the stopping portion of the limiting part rotate around the first rotating shaft, so that the unlocking position and the locking position are switched, screws are not needed to be mounted and dismounted, and the board card can be mounted and dismounted conveniently.

The details of the present application will now be further described with reference to the accompanying drawings and detailed description.

The existing PEI-E board card is a network card with a PCI-E interface and is used as an expansion port in mainboard level connection. Specifically, the PCI-E based expansion card can be inserted into a PCI-E slot in a main board of equipment such as a host, a server and a network switch, and the special PCI-E slot on the computer host corresponds to the PCI-E board card. However, the PCI-E board needs to be fixed to a host computer by screws, and a special tool is required to mount and dismount the PCI-E board, which makes mounting and dismounting inconvenient. The board fixing device comprises a supporting component and a connecting component. And the board card interface of the supporting component is used for being in butt joint with a board card of the electronic equipment. The limiting part of the connecting assembly is rotatably connected with the supporting frame of the supporting assembly. The clamping portion and the stopping portion of the limiting part rotate around the first rotating shaft, so that the locking position and the unlocking position are switched, and the mounting and the dismounting of the board card and the board card fixing device are realized. The board card can be conveniently mounted and dismounted without screws.

Fig. 1 is a schematic structural diagram of a board card fixing device provided in an embodiment of the present application. As shown in fig. 1, the board holding apparatus 200 includes a support member 210 and a connecting member 220. The supporting member 210 is used for supporting and fixing the connecting member 220, and the connecting member 220 plays a role of connection and fixation. The support assembly 210 includes a support frame 211 and a board interface 212 disposed on the support frame 211. The supporting frame 211 serves as an outer frame of the board card fixing device 200, and is connected to the board card 310 on one hand and used for supporting the board card interface 212 on the other hand. The board interface 212 is fixedly supported by the supporting frame 211 and is used for interfacing with the board 310 to connect the board 310 and the board fixing device 200 as a whole.

Further, the connecting assembly 220 includes a limiting member 221, and the limiting member 221 is rotatably connected to the supporting frame 211 to switch between an unlocking position and a locking position, so as to implement the mounting and dismounting of the board 310. Fig. 2 is a schematic structural diagram of the board fixing device and the unlocking of the board provided in the embodiment of the present application.

Fig. 3 is a schematic structural diagram of locking of a board card fixing device and a board card provided in the embodiment of the present application. As shown in fig. 2 and fig. 3, the limiting member 221 includes a clamping portion 222 and a stopping portion 223, and through rotation of the limiting member 221 and the supporting frame 211, when the limiting member 221 is located at the locking position, the clamping portion 222 is clamped on the warped plate 311 of the board 310, and the stopping portion 223 is abutted against the supporting frame 211, so as to mount the board 310; when the limiting member 221 is located at the unlocking position, the clamping portion 222 is far away from the rocker 311 of the board 310, and the stopping portion 223 and the supporting frame 211 are not abutted, so that the board 310 is detached. Because the installation and the dismantlement of integrated circuit board 310 are realized through the rotation of locating part 221 and braced frame 211, do not need the screw to install and dismantle, can make integrated circuit board 310 install and dismantle convenient.

Optionally, the limiting member 221 is connected to the supporting frame 211 through the first rotating shaft 230, and the engaging portion 222 and the stopping portion 223 are respectively located in different directions of the first rotating shaft 230. Specifically, since the limiting element 221 is connected to the supporting frame 211 through the first rotating shaft 230, in the process that the limiting element 221 rotates through the first rotating shaft 230, on one hand, the clamping portion 222 and the stopping portion 223 can work together to switch the limiting element 221 between the unlocking position and the locking position, so as to implement the installation and the disassembly of the board 310; on the other hand, since the clamping portion 222 and the stopping portion 223 are respectively located at different directions of the first rotating shaft 230, the clamping portion 222 can be clamped on the warping plate 311 of the board card 310, and the stopping portion 223 abuts against the supporting frame 211, so that the clamping portion 222 and the stopping portion 223 respectively play different roles, and are not influenced mutually.

Optionally, the first rotation axis 230 is parallel to a plane in which the card interface 212 is located, so that the position-limiting element 221 moves closer to or away from the card interface 212 when rotating around the first rotation axis 230. Specifically, because the first rotating shaft 230 is parallel to the plane of the board interface 212, when the limiting member 221 rotates around the first rotating shaft 230, the first rotating shaft is always parallel to the board interface 212, so that the limiting member 221 is prevented from colliding with the board interface 212 in the rotation process of the limiting member 221, and the limiting member 221 can be close to or far from the board interface 212 when rotating around the first rotating shaft 230.

Optionally, the latch portion 222 includes a first latch arm 2221 and a second latch arm 2222. First clamping arm 2221 is located on one side of second clamping arm 2222 close to board card interface 212, the first end of first clamping arm 2221 and the first end of second clamping arm 2222 are connected to each other so as to rotate together under the rotation of first rotating shaft 230, the second end of first clamping arm 2221 and the second end of second clamping arm 2222 both extend out in parallel in the direction departing from first rotating shaft 230, and a limit space 2224 for clamping board 311 of board card 310 is formed between first clamping arm 2221 and second clamping arm 2222.

Since the first end of the first latch arm 2221 and the first end of the second latch arm 2222 are connected to each other, the first latch arm 2221 and the second latch arm 2222 can rotate through the common first rotating shaft 230, and in the process that the first latch arm 2221 and the second latch arm 2222 rotate around the first rotating shaft 230, the first latch arm 2221 and the second latch arm 2222 are switched between the unlocking position and the locking position through the limit space 2224 formed by the second end of the first latch arm 2221 and the second end of the second latch arm 2222, so that the mounting and dismounting of the board card 310 are realized. Specifically, when the limiting space 2224 rotates to the rocker 311 of the board 310, the second clamping arm 2222 is clamped with the rocker 311 of the board 310, so as to mount the board 310; when spacing space 2224 rotates to the wane 311 of keeping away from integrated circuit board 310, first joint arm 2221 and second joint arm 2222 are all not blocked with the wane 311 of integrated circuit board 310, realize the dismantlement of integrated circuit board 310.

Optionally, the latching portion 222 further includes a first force application portion 2223, and the first force application portion 2223 is connected to a side of the first latching arm 2221 facing away from the second latching arm 2222. Specifically, since the clamping portion 222 further includes the first force application portion 2223, the first force application portion 2223 is connected to a side of the first clamping arm 2221 away from the second clamping arm 2222, and the first force application portion 2223 is pressed toward the first clamping arm 2221, so that the first force application portion 2223 rotates around the first rotating shaft 230 toward the first clamping arm 2221, and further, the first clamping arm 2221 and the second clamping arm 2222 are driven to rotate around the first rotating shaft 230 until the second clamping arm 2222 is clamped on the warped plate 311 of the board 310, thereby achieving the installation of the board 310; by pulling the first force application portion 2223 in the opposite direction of the first clamping arm 2221, the first force application portion 2223 rotates around the first rotating shaft 230 in the opposite direction of the first clamping arm 2221, and then the first clamping arm 2221 and the second clamping arm 2222 are driven to rotate around the first rotating shaft 230 until the first clamping arm 2221 and the second clamping arm 2222 are both far away from the warping plate 311 of the board card 310, so that the board card 310 is detached. The board card 310 can be conveniently mounted and dismounted without screws.

Optionally, second latch arm 2222 is an arc-shaped arm, and a second end of second latch arm 2222 is bent away from first latch arm 2221. Specifically, since the second clamping arm 2222 is an arc-shaped arm, on one hand, the second clamping arm 2222 surrounds the first clamping arm 2221, so that a limit space 2224 for clamping the rocker 311 of the board card 310 is formed between the first clamping arm 2221 and the second clamping arm 2222; on the other hand, in the process that the second latch arm 2222 rotates around the first rotating shaft 230, the arc-shaped arm can prevent the second latch arm 2222 from colliding with the rocker 311 of the board 310 in the rotating process until the second latch arm 2222 is connected with the rocker 311 of the board 310, so that the board 310 is mounted.

Optionally, the supporting frame 211 includes a side wall 2111 located at a lateral side of the board card interface 212, the limiting element 221 is rotatably connected to the side wall 2111 through the first rotating shaft 230, and the side wall 2111 has a notch 2112 for the stopping portion 223 to abut against. Specifically, since the supporting frame 211 is provided with a side wall 2111 at a side of the board card interface 212, and the first rotating shaft 230 is connected to the side wall 2111, the limiting member 221 can be limited by the side wall 2111 on the first rotating shaft 230 in the process of rotating through the first rotating shaft 230, so as to ensure that the limiting member 221 does not shift when rotating. Fig. 4 is a schematic structural diagram of the abutment between the stopper and the support frame according to the embodiment of the present application. As shown in fig. 4, since the sidewall 2111 is provided with the notch 2112 for the stopper 223 to abut against, when the second clamping arm 2222 rotates to be clamped with the tilting plate 311 of the board card 310, the stopper 223 abuts against the notch 2112 on the sidewall 2111, so that under the combined action of the second clamping arm 2222 and the stopper 223, the locking of the board card fixing device 200 and the board card 310 is realized, and the mounting and dismounting of the board card 310 are facilitated without screws.

Optionally, the stopping portion 223 is located at the first end of the first clamping arm 2221, and extends toward the sidewall 2111, and when the limiting member 221 is in the locking state, the stopping portion 223 abuts against the notch 2112. Specifically, since the stopping portion 223 is located at the first end of the first clamping arm 2221 and extends toward the side wall 2111, in the process that the first clamping arm 2221 rotates around the first rotation shaft 230, the stopping portion 223 rotates along with the rotation of the first clamping arm 2221 at the same time until the limiting member 221 is in the locking state, the stopping portion 223 abuts against the notch 2112, and the locking between the board fixing device 200 and the board 310 is realized under the combined action of the abutting of the limiting member 221 and the warped plate 311 of the board 310 and the abutting of the stopping portion 223 and the notch 2112.

Optionally, the stopping portion 223 is connected with a second force application portion 2231, and when the stopping portion 223 abuts against the notch 2112, the second force application portion 2231 extends out of the notch 2112. Specifically, since the second force application portion 2231 is connected to the blocking portion 223, by pulling the second force application portion 2231 in the direction of the first clamping arm 2221, the second force application portion 2231 rotates around the first rotating shaft 230 in the direction of the first clamping arm 2221, and then the first clamping arm 2221 and the second clamping arm 2222 are driven to rotate around the first rotating shaft 230 until the second clamping arm 2222 is clamped on the rocker 311 of the board card 310, and the blocking portion 223 abuts against the notch 2112, thereby achieving the installation of the board card 310.

Fig. 5 is a schematic structural diagram of a separation between a stopper portion and a supporting frame according to an embodiment of the present application. As shown in fig. 5, by pressing the second force application portion 2231 toward the opposite direction of the first latch arm 2221, the first force application portion 2223 rotates around the first rotation shaft 230 toward the opposite direction of the first latch arm 2221, and then the first latch arm 2221 and the second latch arm 2222 are driven to rotate around the first rotation shaft 230, until the first latch arm 2221 and the second latch arm 2222 are both far away from the rocker 311 of the board card 310, and the stopping portion 223 is far away from the notch 2112, so as to detach the board card 310.

The electronic device 300 provided by the present application includes a board 310 and a board fixing device 200. Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 6, the card 310 is plugged into the card interface 212 of the card holder 200. Specifically, by pressing the first force application portion 2223 in the direction of the first clamping arm 2221 and pulling the second force application portion 2231, the first force application portion 2223 and the second force application portion 2231 rotate around the first rotating shaft 230 in the direction of the first clamping arm 2221, and further drive the first clamping arm 2221 and the second clamping arm 2222 to rotate around the first rotating shaft 230 until the second clamping arm 2222 is clamped on the tilting plate 311 of the board card 310, and meanwhile, the stopping portion 223 abuts against the notch 2112, so that the board card 310 is mounted; by pulling the first force application portion 2223 in the opposite direction of the first clamping arm 2221 and pressing the second force application portion 2231, the first force application portion 2223 and the second force application portion 2231 rotate around the first rotating shaft 230 in the opposite direction of the first clamping arm 2221, and then the first clamping arm 2221 and the second clamping arm 2222 are driven to rotate around the first rotating shaft 230 until the first clamping arm 2221 and the second clamping arm 2222 are both far away from the warping plate 311 of the board card 310, and the stopping portion 223 is far away from the notch 2112, so that the board card 310 is disassembled.

The application provides an installation and dismantlement process of integrated circuit board fixing device and electronic equipment 100 as follows: the card retaining device 200 includes a support assembly 210 and a connection assembly 220. The support assembly 210 includes a support frame 211 and a board interface 212 disposed on the support frame 211, wherein the board interface 212 is configured to interface with a board 310 of the electronic device 300. The connecting assembly 220 includes a limiting member 221, and the limiting member 221 is rotatably connected to the supporting frame 211. The limiting member 221 includes a clamping portion 222 and a stopping portion 223, and in the process of rotating around the first rotating shaft 230, the first clamping arm 2221, the second clamping arm 2222, the first force application portion 2223 of the clamping portion 222, and the second force application portion 2231 of the stopping portion 223 are switched between the unlocking position and the locking position, so that the mounting and dismounting of the board card 310 and the board card fixing device 200 are realized.

Specifically, by pressing the first force application portion 2223 in the direction of the first clamping arm 2221 and pulling the second force application portion 2231, the first force application portion 2223 and the second force application portion 2231 rotate around the first rotating shaft 230 in the direction of the first clamping arm 2221, and then the first clamping arm 2221 and the second clamping arm 2222 are driven to rotate around the first rotating shaft 230 until the second clamping arm 2222 is clamped on the warped plate 311 of the board card 310, and the stopping portion 223 abuts against the notch 2112, so that the board card 310 is mounted;

by pulling the first force application portion 2223 in the opposite direction of the first clamping arm 2221 and pressing the second force application portion 2231, the first force application portion 2223 and the second force application portion 2231 rotate around the first rotating shaft 230 in the opposite direction of the first clamping arm 2221, so as to drive the first clamping arm 2221 and the second clamping arm 2222 to rotate around the first rotating shaft 230 until the first clamping arm 2221 and the second clamping arm 2222 are both far away from the tilting plate 311 of the board card 310, and the stopping portion 223 is far away from the notch 2112, thereby achieving the detachment of the board card 310. The board card 310 can be conveniently mounted and dismounted without screws.

The application provides a board card fixing device and electronic equipment, board card fixing device include supporting component and coupling assembling. The supporting assembly comprises a supporting frame and a board card interface arranged on the supporting frame, and the board card interface is used for being in butt joint with a board card. The connecting assembly comprises a limiting piece, and the limiting piece is rotatably connected with the supporting frame so as to be switched between an unlocking position and a locking position. The locating part includes joint portion and backstop portion, and when the locating part was located latched position, joint portion joint was on the wane of integrated circuit board, and backstop portion and braced frame butt. The board card can be conveniently mounted and dismounted without screw fixation.

In the description of the present application, it is to be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", and the like, as used herein, indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the position or element so referred to must have a particular orientation, be of particular construction and operation, and thus should not be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communicated with each other inside the two elements or the interaction relationship between the two elements, unless otherwise specifically defined, and the specific meaning of the terms in the present application may be understood by those skilled in the art according to specific situations.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. The board card fixing device is characterized by comprising a supporting assembly and a connecting assembly, wherein the supporting assembly comprises a supporting frame and a board card interface arranged on the supporting frame, and the board card interface is used for being in butt joint with a board card; coupling assembling includes the locating part, the locating part with braced frame rotates to connect to switch between unblock position and latched position, the locating part includes joint portion and backstop portion, the locating part is located during latched position, joint portion joint in on the wane of integrated circuit board, just backstop portion with the braced frame butt.

2. The board card fixing device of claim 1, wherein the limiting member is connected to the supporting frame through a first rotating shaft, and the engaging portion and the stopping portion are respectively located at different directions of the first rotating shaft.

3. The board fixing device according to claim 2, wherein the first rotation axis is parallel to a plane in which the board interface is located, so that the position limiting member moves closer to or away from the board interface when rotating around the first rotation axis.

4. A board card fixing device according to any one of claims 2 or 3, wherein the clamping portion includes a first clamping arm and a second clamping arm, the first clamping arm is located on one side of the second clamping arm close to the board card interface, a first end of the first clamping arm is connected with a first end of the second clamping arm, a second end of the first clamping arm and a second end of the second clamping arm both extend in parallel in a direction away from the first rotating shaft, and a limiting space for clamping a warping plate of the board card is formed between the first clamping arm and the second clamping arm.

5. The board card fixing device of claim 4, wherein the clamping portion further comprises a first force application portion connected to a side of the first clamping arm that is away from the second clamping arm.

6. The board card retaining device of claim 4, wherein the second latch arm is an arcuate arm and a second end of the second latch arm is bent away from the first latch arm.

7. The board fixing device according to claim 4, wherein the supporting frame includes a side wall located at a side of the board interface, the limiting member is rotatably connected to the side wall through the first rotating shaft, and the side wall has a notch for the stopping portion to abut against.

8. The board fixing device according to claim 7, wherein the stopping portion is located at the first end of the first engaging arm and extends toward the sidewall, and when the position-limiting member is in the locked state, the stopping portion abuts against the notch.

9. The board card fixing device according to claim 8, wherein a second force applying portion is connected to the stopping portion, and when the stopping portion abuts against the notch, the second force applying portion extends out of the notch.

10. An electronic device comprising a board and the board fixing device according to any one of claims 1 to 9, wherein the board is plugged into a board interface of the board fixing device.

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