CN217064340U - Accelerating card fixing structure - Google Patents

Abstract

The utility model discloses an acceleration card fixed knot constructs, include: the accelerator card is provided with a plugging end, and two opposite sides adjacent to the plugging end in the accelerator card are a first fixed side and a second fixed side respectively; a frame having a socket, a first support part and a second support part; the inserting end is inserted into the inserting seat; the first fixing side is clamped with the first supporting part, and the clamping direction of the first fixing side and the first supporting part is the same as the inserting direction of the inserting end; the second supporting part has mount, first fixed fastener and the fixed fastener of second, and on the mount was fixed in the frame, the one end joint of grafting end was close to first fixed fastener and mount and the fixed side of second, and the one end joint of grafting end was kept away from to the fixed fastener of second and mount and the fixed side of second. This scheme has realized stabilizing the accelerator card in the frame, avoids under the exogenic action accelerator card gliding phenomenon to take place easily, has still simplified the installation degree of difficulty, has avoided the instrument to cause the risk of destruction to the electron device on circuit board and the board.

Description

Accelerating card fixing structure

Technical Field

The application relates to the technical field of servers, in particular to an accelerator card fixing structure.

Background

The accelerator card is a product for high-speed data transmission and specific instruction execution of a server and a BBU (Building Base band Unit) device, and is connected with a main board through a plug-in end of a card body. But current fixed scheme is only fixed the accelerator card through simple and easy structure, leads to the accelerator card still to slide in the position that receives external force effect down easily, influences its job stabilization nature and leads to product failure rate high. Meanwhile, the existing accelerator card is usually fixed by using screws, the installation process is complicated, meanwhile, the accelerator card is assembled by using tools, and the circuit board and electronic devices on the circuit board are easily damaged by using the tools, so that certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an aim at: there is provided an accelerator card fixing structure capable of solving the above-mentioned problems in the prior art.

In order to achieve the purpose, the following technical scheme is adopted in the application:

an accelerator card fixing structure comprising:

the accelerator card is provided with a plugging end, and two opposite sides adjacent to the plugging end in the accelerator card are respectively a first fixed side and a second fixed side;

a frame having a socket, a first support part and a second support part; the inserting end is inserted into the inserting seat; the first fixing side is clamped with the first supporting part, and the clamping direction of the first fixing side and the first supporting part is the same as the inserting direction of the inserting end; the second supporting part is provided with a fixing frame, a first fixing clamping piece and a second fixing clamping piece, the fixing frame is fixed on the rack, the first fixing clamping piece is clamped with the fixing frame and one end, close to the inserting end, of the second fixing side, and the second fixing clamping piece is clamped with the fixing frame and one end, far away from the inserting end, of the second fixing side.

Optionally, the acceleration clamp is provided with a first positioning column and a second positioning column, the first fixing clamp part is provided with a first clamping part, the first clamping part is provided with a first arc-shaped clamping groove matched with the first positioning column, and the first positioning column is embedded into the first arc-shaped clamping groove; the second fixing clamping piece is provided with a second clamping portion, the second clamping portion is provided with a second arc-shaped clamping groove matched with the second positioning column, and the second positioning column is embedded into the second arc-shaped clamping groove.

Optionally, the accelerator card has a first layer plate and a second layer plate, and the first positioning column and the second positioning column are located between the first layer plate and the second layer plate to keep the first layer plate and the second layer plate at a certain distance; the upper side and the lower side of the first clamping portion and the second clamping portion are respectively abutted to the first laminate and the second laminate.

Optionally, the fixing frame includes a top plate parallel to the accelerator card, and two ends of the top plate are respectively connected with a first side plate and a second side plate perpendicular to the top plate; the first fixing clamping piece is provided with a third clamping part, the third clamping part is provided with a first L-shaped clamping groove matched with the fixing frame, and the first L-shaped clamping groove is simultaneously clamped with the top plate and the first side plate; the second fixing clamp is provided with a fourth clamping portion, the fourth clamping portion is provided with a second L-shaped clamping groove matched with the fixing frame, and the second L-shaped clamping groove is simultaneously clamped with the top plate and the second side plate.

Optionally, the inserting direction of the first arc-shaped clamping groove, the second arc-shaped clamping groove, the first L-shaped clamping groove and the second L-shaped clamping groove is the same as the direction of the first fixed side, and the second fixed side points to the first fixed side.

Optionally, the third clamping and connecting portion and the top plate are respectively provided with a first positioning hole and a first threaded hole which correspond to each other, and the first positioning hole and the first threaded hole are connected with a first positioning screw at the same time; the fourth clamping part and the top plate are respectively provided with a second positioning hole and a second threaded hole which correspond to each other, and the second positioning hole and the second threaded hole are simultaneously connected with a second positioning screw.

Optionally, the first supporting part is provided with a supporting plate, a first fixing part and a second fixing part, one end of the first fixing side close to the inserting end is clamped with the first fixing part, and one end of the first fixing side far away from the inserting end is clamped with the second fixing part.

Optionally, the first fixing portion includes a clamping protrusion disposed on a side of the support plate facing the accelerator card, and the clamping protrusion is provided with a clamping hole having a hole axis parallel to the plugging direction of the plugging end; one end of the first fixing side, which is close to the inserting end, is provided with a clamping sheet corresponding to the clamping hole, and the clamping sheet penetrates into the clamping hole to be clamped with the clamping protrusion.

Optionally, the second fixing portion includes an end plate and a pressing plate, the end plate is connected to one end of the supporting plate far away from the accelerator card, the end plate is perpendicular to the insertion direction of the insertion end, and the pressing plate is detachably connected to the end plate; one end of the first fixing side, which is far away from the inserting end, is provided with a fixing plate which can be attached to the end plate, and the fixing plate is clamped between the end plate and the pressing plate, so that the fixing plate is clamped with the second fixing part.

Optionally, the second fixing portion and the fixing plate are connected through a third set screw in a reinforcing manner.

The beneficial effect of this application does: the utility model provides an accelerating card fixed knot constructs for to accelerate the card and fix in the frame, accelerating card pegging graft back on the socket, first fixed side and second fixed side respectively with first supporting part and second supporting part joint in the frame, so realize respectively will accelerate the both sides of card and press from both sides tight fixed, the joint of end and socket is pegged graft in the cooperation, realized card with higher speed and stabilized in the frame, so avoid under the exogenic action accelerating card gliding phenomenon to appear easily and take place, ensure product job stabilization nature, reduce the product fault rate. In addition, the clamping direction of the first fixed side and the first supporting part is the same as the plugging direction of the plugging end, so that the clamping connection of the first fixed side and the first supporting part is completed when the accelerator card is plugged into the plugging seat; then, the first fixing clamping piece and the second fixing clamping piece are installed, so that the accelerator card can be quickly fixed; in addition, in this scheme, the connected mode of first fixed fastener and the fixed fastener of second and mount and accelerator card is the joint, need not during the installation with the help of instruments such as screwdriver, has simplified the installation degree of difficulty from this, has avoided the instrument to cause the risk of destruction to electronic device on circuit board and the board simultaneously.

Drawings

The present application will be described in further detail below with reference to the accompanying drawings and examples.

Fig. 1 is a schematic structural diagram of an accelerator card fixing structure according to an embodiment of the present application;

FIG. 2 is an enlarged view of area A of FIG. 1;

FIG. 3 is an enlarged view of region B of FIG. 1;

FIG. 4 is an enlarged view of area C of FIG. 1;

fig. 5 is an exploded view of an accelerator card fixing structure according to an embodiment of the present application;

FIG. 6 is an enlarged view of area D of FIG. 5;

FIG. 7 is a schematic structural diagram of an accelerator card according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a fixing frame according to an embodiment of the present application;

fig. 9 is a schematic perspective view of a first fixing clip according to an embodiment of the present application;

fig. 10 is a front view of the first fixing clip according to the embodiment of the present application.

In the figure:

100. an accelerator card; 101. a plug-in end; 102. a first fixed side; 103. a second fixed side; 104. a first laminate; 105. a second laminate; 106. a first positioning post; 107. a second positioning column; 108. a clip sheet; 109. a fixing plate; 200. a frame; 1. a socket; 21. a first fixing clip; 22. a second fixing clip; 221. a second clamping part; 222. a second arc-shaped clamping groove; 223. a fourth clamping part; 224. a second L-shaped slot; 225. a second positioning hole; 23. a fixed mount; 231. a top plate; 232. a first side plate; 233. a second side plate; 234. a first threaded hole; 235. a second threaded hole; 31. a support plate; 32. a first fixed part; 321. clamping the protrusions; 33. a second fixed part; 331. and (7) pressing a plate.

Detailed Description

In order to make the technical problems solved, technical solutions adopted, and technical effects achieved by the present application clearer, the following describes technical solutions of embodiments of the present application in further detail, and it is obvious that the described embodiments are only a part of embodiments of the present application, but 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.

In the description of the present application, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly and may for example be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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 being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 10, the present embodiment provides an accelerator card fixing structure, including:

the accelerator card 100 is provided with a plugging end 101, and two opposite sides adjacent to the plugging end 101 in the accelerator card 100 are a first fixed side 102 and a second fixed side 103 respectively;

a frame 200 having a socket 1, a first support part and a second support part; the inserting end 101 is inserted into the inserting seat 1; the first fixing side 102 is clamped with the first supporting part, and the clamping direction of the first fixing side 102 and the first supporting part is the same as the plugging direction of the plugging end 101; the second supporting part is provided with a fixing frame 23, a first fixing clamping piece 21 and a second fixing clamping piece 22, the fixing frame 23 is fixed on the rack 200, the first fixing clamping piece 21 is clamped with the fixing frame 23 and one end, close to the insertion end 101, of the second fixing side 103, and the second fixing clamping piece 22 is clamped with the fixing frame 23 and one end, far away from the insertion end 101, of the second fixing side 103.

The plug socket 1 on the rack 200 is connected to a motherboard (not shown), and after the plug end 101 of the accelerator card 100 is plugged into the plug socket 1, the signal connection between the accelerator card and the motherboard can be realized, and meanwhile, the plugging of the plug end 101 and the plug socket 1 can also play a certain role in reinforcing the installation and fixation of the accelerator card 100.

The clamping direction of the first fixing side 102 and the first supporting part is the same as the plugging direction of the plugging end 101, so that when the plugging end 101 is plugged into the plugging seat 1, the first fixing side 102 can just complete the clamping with the first supporting part, and when the plugging end 101 is pulled out from the plugging seat 1, the first fixing side 102 is separated from the clamping with the first supporting part. During the process of inserting and pulling the accelerator card 100, neither the first fixing catch 21 nor the second fixing catch 22 on the second support part is installed, so that sufficient moving space can be reserved on the second fixing side 103 to accelerate the movement of the card 100; after the accelerator card 100 is inserted, the first fixing clip 21 and the second fixing clip 22 are installed to limit and fix the second fixing side 103, so that the second fixing side 103 is fixed. In this way, by locking the three side edges (i.e., the side where the contact terminal 101 is located, the first fixing side 102 and the second fixing side 103) of the accelerator card 100, the entire accelerator card 100 is firmly and reliably fixed on the rack.

In conclusion, in the accelerator card fixing structure of this embodiment, after the accelerator card 100 is inserted into the socket 1, the first fixing side 102 and the second fixing side 103 are respectively engaged with the first supporting portion and the second supporting portion of the rack 200, so as to respectively clamp and fix the two sides of the accelerator card 100, and the insertion end 101 is engaged with the socket 1, thereby realizing that the accelerator card 100 is stably fixed on the rack 200, avoiding the occurrence of the sliding phenomenon of the accelerator card 100 under the action of external force, ensuring the working stability of the product, and reducing the failure rate of the product. In addition, the clamping direction of the first fixing side 102 and the first supporting part is the same as the plugging direction of the plugging end 101, so that the first fixing side 102 and the first supporting part are clamped while the accelerator card 100 is plugged into the plugging seat 1; then, the first fixing clip piece 21 and the second fixing clip piece 22 are installed, so that the accelerator card 100 can be quickly fixed; in addition, in this scheme, the first fixing clip 21 and the second fixing clip 22 are connected with the fixing frame 23 and the accelerator card 100 in a clamping manner, and tools such as a screwdriver are not needed during installation, so that the installation difficulty is simplified, and the risk of damage to the circuit board and the electronic devices on the board caused by the tools is avoided.

With reference to fig. 2, 7 and 9, as one embodiment, the accelerator card 100 is provided with a first positioning column 106 and a second positioning column 107, the first fixing clip 21 has a first clipping portion, the first clipping portion has a first arc-shaped clipping groove matched with the first positioning column 106, and the first positioning column 106 is embedded in the first arc-shaped clipping groove; the second fixing clip member 22 has a second clipping portion 221, the second clipping portion 221 has a second arc clipping groove 222 matched with the second positioning column 107, and the second positioning column 107 is embedded into the second arc clipping groove 222.

Preferably, the first arc-shaped clamping groove and the second arc-shaped clamping groove 222 are both optimized arc grooves, when clamping is performed, the first positioning column 106/the second positioning column 107 stretches the first arc-shaped clamping groove/the second arc-shaped clamping groove 222, and after the first positioning column 106/the second positioning column 107 is completely embedded into the first arc-shaped clamping groove/the second arc-shaped clamping groove 222, the first clamping portion/the second clamping portion 221 restores to the original shape, so that the first positioning column 106/the second positioning column 107 is tightly held. Therefore, the structure of the first fixing clip 21 and the second fixing clip 22 for engaging with the accelerator card 100 in the present embodiment has the advantages of simple structure, easy installation, and firm installation.

Further, referring to fig. 7, the accelerator card 100 has a first layer 104 and a second layer 105, and the first positioning column 106 and the second positioning column 107 are located between the first layer 104 and the second layer 105 to keep the first layer 104 and the second layer 105 at a certain distance; the upper and lower sides of the first and second clamping portions 221 are respectively abutted against the first and second laminates 104 and 105.

Specifically, in the angle shown in fig. 7, with the upper end surface of the accelerator card 100 as a horizontal plane, in the horizontal direction, since the first positioning column 106/the second positioning column 107 are clasped by the first fixing catch 21/the second fixing catch 22, the relative movement of the accelerator card 100, the first fixing catch 21 and the second fixing catch 22 in the horizontal direction is completely limited; furthermore, the upper and lower sides of the first positioning column 106 and the second positioning column 107 are respectively abutted against the first layer plate 104 and the second layer plate 105, so that the relative movement of the accelerator card 100, the first fixing clip 21 and the second fixing clip 22 in the vertical direction is completely limited, thereby completely limiting the relative displacement of the accelerator card 100, the first fixing clip 21 and the second fixing clip 22 in three vertical directions, and further improving the installation stability of the accelerator card 100.

With reference to fig. 2, 8, 9 and 10, as one embodiment of the clamping structure between the first fixing clip 21 and the second fixing clip 22 and the fixing frame 23, the fixing frame 23 includes a top plate 231 parallel to the accelerator card 100, and a first side plate 232 and a second side plate 233 perpendicular to the top plate 231 are respectively connected to two ends of the top plate 231; the first fixing clip 21 has a third clipping part, the third clipping part has a first L-shaped clipping groove matched with the fixing frame 23, and the first L-shaped clipping groove is clipped with the top plate 231 and the first side plate 232 at the same time; the second fixing clip 22 has a fourth clip portion 223, the fourth clip portion 223 has a second L-shaped clip groove 224 matching with the fixing frame 23, and the second L-shaped clip groove 224 is simultaneously clipped with the top plate 231 and the second side plate 233.

Specifically, the fixing frame 23 is fixedly mounted on the rack 200, and after the first fixing clip 21 and the second fixing clip 22 are connected to the fixing frame 23 in a clamping manner, the accelerator card 100 is locked to the rack 200. In the fixing frame 23, an L-shaped structure is formed between the top plate 231 and the first side plate 232, and an L-shaped structure is also formed between the top plate 231 and the second side plate 233, so that when the first fixing clip 21/the second fixing clip 22 is clamped with the fixing frame 23, the first L-shaped slot/the second L-shaped slot 224 is matched with the top plate 231 to limit the displacement of the first fixing clip 21/the second fixing clip 22 in the vertical direction, thereby avoiding the shaking of the accelerator card 100 on the second fixing side 103 side in the vertical direction; the first L-shaped slot/the second L-shaped slot 224 and the first side plate 232/the second side plate 233 cooperate to limit the displacement of the first fixing clip 21/the second fixing clip 22 in the transverse direction (the direction parallel to the plugging direction of the accelerator card 100), thereby avoiding the vibration of the accelerator card 100 in the transverse direction at the second fixing side 103; the displacement of the accelerator card 100 in the longitudinal direction (the direction perpendicular to the plugging direction of the accelerator card on the horizontal plane) can be reliably limited by the plugging limit of the plugging end 101 and the socket 1 and the connection limit of the first fixing side 102 and the first supporting portion.

Preferably, the insertion direction of the first arc-shaped clamping groove, the second arc-shaped clamping groove 222, the first L-shaped clamping groove and the second L-shaped clamping groove 224 is the same as the direction pointing from the second fixed side 103 to the first fixed side 102. Thus, when the first fixing clip 21 and the second fixing clip 22 are installed, the first fixing clip and the second fixing clip are directly pressed from the second fixing side 103 of the accelerator card 100 to the first fixing side 102, so that the accelerator card 100 and the fixing frame 23 can be simultaneously clamped, and the installation is convenient and fast.

Further, the third clamping part and the top plate 231 are respectively provided with a first positioning hole and a first threaded hole 234 corresponding to each other, and the first positioning hole and the first threaded hole 234 are simultaneously connected with a first positioning screw; the fourth clamping portion 223 and the top plate 231 are respectively provided with a second positioning hole 225 and a second threaded hole 235 corresponding to each other, and the second positioning hole 225 and the second threaded hole 235 are connected with a second positioning screw at the same time. Therefore, in order to meet the test requirements of the product in a special test environment, a first positioning screw and a second positioning screw can be respectively installed to lock the first fixing clamping piece 21 and the second fixing clamping piece 22 on the fixing frame 23, so that the installation reliability of the first fixing clamping piece 21 and the second fixing clamping piece 22 is further enhanced. It should be noted that, in a general use scenario, the first fixing clip 21 and the second fixing clip 22 are mounted by using the aforementioned clip structure, so that the first positioning screw and the second positioning screw are not required to be mounted during product assembly.

Regarding the clamping connection between the first supporting portion and the first fixing side 102, as an embodiment, the first supporting portion has a supporting plate 31, a first fixing portion 32 and a second fixing portion 33, an end of the first fixing side 102 close to the inserting end 101 is clamped to the first fixing portion 32, and an end of the first fixing side 102 far away from the inserting end 101 is clamped to the second fixing portion 33. Thus, the two ends of the first fixing side 102 are respectively clamped, so that the reliability of locking the first fixing side 102 can be ensured on the whole based on the simplest structure.

Further, referring to fig. 3 to 4, the first fixing portion 32 includes a clamping protrusion 321 disposed on a side of the supporting plate 31 facing the accelerator card 100, and the clamping protrusion 321 is provided with a clamping hole having a hole axis parallel to the plugging direction of the plugging end 101; one end of the first fixing side 102 close to the inserting end 101 is provided with a clamping piece 108 corresponding to the clamping hole, and the clamping piece 108 penetrates into the clamping hole to realize clamping with the clamping protrusion 321.

The hole axis of the clamping hole is parallel to the plugging direction of the plugging end 101, so that the clamping piece 108 can be plugged into the clamping hole while the accelerator card 100 is plugged, and the accelerator card 100 can be reliably limited in the longitudinal direction and the vertical direction after being plugged.

Further, referring to fig. 3 and 6, the second fixing portion 33 includes an end plate and a pressing plate 331, the end plate is connected to an end of the supporting plate 31 far away from the accelerator card 100, the end plate is perpendicular to the plugging direction of the plugging end 101, and the pressing plate 331 is detachably connected to the end plate; one end of the first fixing side 102, which is far away from the insertion end 101, is provided with a fixing plate 109 which can be attached to the end plate, and the fixing plate 109 is clamped between the end plate and the pressing plate 331, so that the fixing plate 109 and the second fixing portion 33 are clamped.

Specifically, before installation, the pressing plate 331 needs to be removed, the accelerator card 100 is inserted, the fixing plate 109 abuts against the end plate, and then the pressing plate 331 is installed to clamp the fixing plate 109.

Preferably, the second fixing portion 33 and the fixing plate 109 are fixedly connected by a third set screw. Specifically, the end plate, the fixing plate 109 and the pressing plate 331 are respectively provided with corresponding threaded holes, and the threaded holes on the plates are connected by the third positioning screws to realize the locking of the three plates, so that the reliability of the locking of the first fixing side 102 of the accelerator card 100 can be ensured.

Of course, as another implementation, the pressing plate 331 can be fixed to the frame 200 in a snap-fit manner, which does not require screws and thus does not require any auxiliary tools.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used in an orientation or positional relationship merely for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principles of the present application have been described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the present application and is not to be construed in any way as limiting the scope of the application. Based on the explanations herein, a person skilled in the art will be able to conceive of other embodiments of the present application without inventive effort, which shall fall within the scope of protection of the present application.

Claims (10)

1. An accelerator card fixing structure characterized by comprising:

the accelerator card (100) is provided with a plugging end (101), and two opposite sides adjacent to the plugging end (101) in the accelerator card (100) are a first fixed side (102) and a second fixed side (103) respectively;

a frame (200) having a socket (1), a first support and a second support; the inserting end (101) is inserted into the inserting seat (1); the first fixing side (102) is clamped with the first supporting part, and the clamping direction of the first fixing side (102) and the first supporting part is the same as the plugging direction of the plugging end (101); the second supporting part is provided with a fixing frame (23), a first fixing clamping piece (21) and a second fixing clamping piece (22), the fixing frame (23) is fixed on the rack (200), the first fixing clamping piece (21) is connected with the fixing frame (23) and one end, close to the insertion end (101), of the second fixing side (103) in a clamping mode, and the second fixing clamping piece (22) is connected with the fixing frame (23) and one end, far away from the insertion end (101), of the second fixing side (103) in a clamping mode.

2. The accelerator card fixing structure according to claim 1, wherein the accelerator card (100) is provided with a first positioning post (106) and a second positioning post (107), the first fixing clip (21) has a first clipping portion having a first arc-shaped clipping groove which is matched with the first positioning post (106), and the first positioning post (106) is embedded in the first arc-shaped clipping groove; the second fixing clamping piece (22) is provided with a second clamping portion (221), the second clamping portion (221) is provided with a second arc-shaped clamping groove (222) matched with the second positioning column (107), and the second positioning column (107) is embedded into the second arc-shaped clamping groove (222).

3. The accelerator card fixing structure according to claim 2, wherein the accelerator card (100) has a first plate (104) and a second plate (105), and the first positioning column (106) and the second positioning column (107) are located between the first plate (104) and the second plate (105) to keep the first plate (104) and the second plate (105) at a certain distance; the upper side and the lower side of the first clamping portion and the second clamping portion (221) are respectively abutted to the first layer plate (104) and the second layer plate (105).

4. The accelerator card fixing structure according to claim 3, wherein the fixing bracket (23) comprises a top plate (231) parallel to the accelerator card (100), and a first side plate (232) and a second side plate (233) perpendicular to the top plate (231) are respectively connected to both ends of the top plate (231); the first fixing clamping piece (21) is provided with a third clamping part, the third clamping part is provided with a first L-shaped clamping groove matched with the fixing frame (23), and the first L-shaped clamping groove is clamped with the top plate (231) and the first side plate (232) at the same time; the second fixing clamp (22) is provided with a fourth clamping portion (223), the fourth clamping portion (223) is provided with a second L-shaped clamping groove (224) matched with the fixing frame (23), and the second L-shaped clamping groove (224) is simultaneously clamped with the top plate (231) and the second side plate (233).

5. The accelerator card fixing structure according to claim 4, wherein the insertion direction of the first arc-shaped card slot, the second arc-shaped card slot (222), the first L-shaped card slot, and the second L-shaped card slot (224) is the same as the direction pointing from the second fixing side (103) to the first fixing side (102).

6. The accelerator card fixing structure according to claim 4, wherein the third engaging portion and the top plate (231) are respectively provided with a first positioning hole and a first threaded hole (234) corresponding to each other, and the first positioning hole and the first threaded hole (234) are simultaneously connected with a first positioning screw; the fourth clamping part (223) and the top plate (231) are respectively provided with a second positioning hole (225) and a second threaded hole (235) which correspond to each other, and the second positioning hole (225) and the second threaded hole (235) are connected with a second positioning screw at the same time.

7. The accelerator card fixing structure according to any one of claims 1 to 6, wherein the first supporting portion has a supporting plate (31), a first fixing portion (32) and a second fixing portion (33), an end of the first fixing side (102) close to the plugging end (101) is engaged with the first fixing portion (32), and an end of the first fixing side (102) far from the plugging end (101) is engaged with the second fixing portion (33).

8. The accelerator card fixing structure according to claim 7, wherein the first fixing portion (32) comprises a clamping protrusion (321) disposed on a side of the supporting plate (31) facing the accelerator card (100), and the clamping protrusion (321) is provided with a clamping hole having a hole axis parallel to a plugging direction of the plugging end (101); one end of the first fixing side (102) close to the inserting end (101) is provided with a clamping sheet (108) corresponding to the clamping hole, and the clamping sheet (108) penetrates into the clamping hole to be clamped with the clamping protrusion (321).

9. The accelerator card fixing structure according to claim 7, wherein the second fixing portion (33) comprises an end plate and a pressing plate (331), the end plate is connected to one end of the supporting plate (31) far away from the accelerator card (100) and is perpendicular to the plugging direction of the plugging end (101), and the pressing plate (331) is detachably connected to the end plate; one end, far away from the inserting end (101), of the first fixing side (102) is provided with a fixing plate (109) which can be attached to the end plate, and the fixing plate (109) is clamped between the end plate and the pressing plate (331), so that the fixing plate (109) and the second fixing portion (33) are clamped.

10. The accelerator card fixing structure according to claim 9, wherein the second fixing portion (33) and the fixing plate (109) are fixedly connected by a third set screw.

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