CN222071149U - Quick fixed bolster of fan and heat dissipation module - Google Patents

Abstract

The utility model relates to the field of heat dissipation, in particular to a fan rapid fixing bracket and a heat dissipation module. Comprising the following steps: the device comprises a top connecting plate, two side connecting plates, a back connecting plate, a first elastic clamping piece and a bottom return air cavity. The top connecting plate, the side connecting plates and the first elastic clamping piece are enclosed to form a clamping cavity, the shape of the clamping cavity is matched with the shape of the passive heat dissipation unit, and the clamping cavity is sleeved on the outer side of the passive heat dissipation unit; the bottom return air cavity is fixedly connected to the bottom end of the backboard; for returning wind leaking from the lower part of the back connection plate back into the clamping chamber. In this scheme, enclose into a clamp chamber through top connecting plate, side connecting plate and first elasticity clamp piece, this clamp chamber passes through certain elasticity clamp force and can fix the noose in the passive radiating element outside fast to the back connecting plate is used for connecting initiative radiator fan, can assemble active radiating element and passive radiating element and combine together fast, and then form a radiating module that has more high-efficient heat dissipation ability.

Description

Quick fixed bolster of fan and heat dissipation module

Technical Field

The utility model relates to the field of heat dissipation, in particular to a fan rapid fixing bracket and a heat dissipation module.

Background

Chip heat dissipation is a critical area, especially in modern high performance computing, data centers, mobile devices, and high power density electronics. Chips, particularly integrated circuits such as CPUs and GPUs, generate significant amounts of thermal energy during operation because some of the electrical energy is converted to thermal energy as current passes through transistors and other circuit elements. If this heat is not dissipated efficiently, it will lead to reduced chip performance, reduced stability and increased reliability risks.

To address the chip heat dissipation challenges, the industry has developed a range of heat dissipation techniques and solutions, such as:

passive heat dissipation:

A heat sink: by increasing the heat dissipation area, the heat is taken away by natural convection of air.

Heat pipe/vapor chamber (VC vapor chamber): the phase change process of evaporation and condensation of the internal working medium is utilized to quickly transfer heat.

Active heat dissipation:

air cooling: the convection heat dissipation effect is enhanced by forcing air to flow through the heat dissipation fan.

Liquid cooling (direct or indirect contact).

Generally, active heat dissipation has more efficient heat dissipation efficiency, and heat dissipation equipment in the prior art is usually passive heat dissipation equipment or active heat dissipation equipment, and can not be quickly converted according to actual use needs, so that the use is inconvenient.

Disclosure of Invention

In view of the above, the present utility model provides a fan quick fixing bracket and a heat dissipation module, which at least partially solve the problems in the prior art.

According to one aspect of the present utility model, there is provided a fan quick-fixing bracket comprising:

the device comprises a top connecting plate and two side connecting plates, wherein the two side connecting plates are respectively and fixedly connected to two opposite side edges of the top connecting plate;

The two first elastic clamping pieces are respectively and fixedly connected to one side edge end, far away from the top connecting plate, of the two side connecting plates, the top connecting plate, the side connecting plates and the first elastic clamping pieces enclose a clamping cavity, the shape of the clamping cavity is adapted to the shape of the passive radiating unit, and the clamping cavity is used for being sleeved on the outer side of the passive radiating unit;

The back connecting plate is fixedly connected to the side edge end, far away from the end inserted into the passive heat radiating unit, of the top connecting plate and the side connecting plate; the back connecting plate is used for connecting the active cooling fan;

The back connecting plate is provided with a plurality of connecting lug plates which are fixedly connected with the side connecting plates and are positioned in the clamping cavity; the back connecting plate is provided with a vent hole; the height of the back connecting plate is larger than that of the clamping chamber, and the bottom end of the backboard of the back connecting plate protrudes out of the bottom of the clamping chamber; the bottom end of the backboard is a side end of the back connecting board opposite to the top connecting board;

The bottom return air cavity is fixedly connected to the bottom end of the backboard; for returning wind leaking from the lower part of the back connection plate back into the clamping chamber.

Further, the bottom return air chamber includes:

The first air return plate is vertically and fixedly connected to the bottom end of the backboard;

one end of the second air return plate is fixedly connected with one end of the first air return plate, which is far away from the bottom end of the backboard, and the other end of the second air return plate is propped against the bottom of the clamping chamber;

The two return air ear plates are respectively and fixedly connected to the two side connecting plates and jointly enclose a bottom return air cavity with the first return air plate and the second return air plate.

Further, a plurality of second elastic clamping pieces are included;

Clamping piece mounting holes are formed in the top connecting plate and the two side connecting plates;

The second elastic clamping piece is fixedly connected in the clamping piece accommodating hole; the second elastic clamping piece is used for providing clamping force for the passive heat dissipation unit.

Further, the connecting lug plate is propped against the inner side wall of the side connecting plate, and the connecting lug plate is connected with the side connecting plate in a riveting mode.

Further, the height of the connecting lug plate is smaller than the minimum distance between the clamping piece mounting holes and the inner side wall of the back connecting plate.

Further, one end of the second return air plate, which is close to the clamping chamber, is provided with a connection reinforcing lug plate, and the connection reinforcing lug plate is used for being connected with the passive heat dissipation unit through screws.

Further, the top connecting plate, the two side connecting plates, the back connecting plate and the bottom return air cavity are made of the same plate through sheet metal processing.

Further, the included angle between the first air return plate and the second air return plate is 90-150 degrees.

According to a second aspect of the present utility model, there is also provided a heat dissipating module including:

A plurality of radiator fan units, each of which comprises a plurality of radiator fans arranged in series; and

A fan quick fixing support is characterized in that a cooling fan unit is fixedly connected to a back connecting plate, and the rotation axis of the cooling fan coincides with the central axis of a vent hole.

Further, the method further comprises the following steps:

the air-cooling radiating fin group is formed by arranging a plurality of sub fins at intervals;

The heat conducting plate is fixedly connected with the air-cooled radiating fin group, and a radiating boss is arranged on one side surface of the heat conducting plate opposite to the air-cooled radiating fin group and is used for fully contacting with a heat source; the air-cooled radiating fin group and the heat conducting plate form a passive radiating unit.

The technical scheme of the utility model has at least the following beneficial effects:

In this scheme, enclose into a clamp chamber through top connecting plate, side connecting plate and first elasticity clamp piece, this clamp chamber passes through certain elasticity clamp force and can fix the noose in the passive radiating element outside fast to the back connecting plate is used for connecting initiative radiator fan, can assemble active radiating element and passive radiating element and combine together fast, and then form a radiating module that has more high-efficient heat dissipation ability.

And owing to have the structural design of connection otic placode and end return air chamber, can form certain interval space between passive radiating element and initiative radiator fan, this space can let the wind that initiative radiator fan blown out after mixing, more even and the large tracts of land get into in the passive radiating element, improves radiating efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a fan quick-fixing bracket according to an embodiment of the application;

FIG. 2 is a schematic view of a fan quick-fixing bracket according to another embodiment of the present application;

FIG. 3 is an exploded view of a passive heat dissipating unit according to another embodiment of the present application;

FIG. 4 is an exploded view of an embodiment of the present application in which the active and passive heat dissipating units are connected by a fan quick fixing bracket;

FIG. 5 is a schematic diagram of the overall structure of a grounding structure (without a reinforced middle frame) for a display card according to an embodiment of the application;

FIG. 6 is a schematic cross-sectional view illustrating a connection structure among a heat sink, a PCB, a locking spring plate, a locking screw and a grounding spring according to another embodiment of the present application;

FIG. 7 is a schematic view of an overall structure of a grounding structure (with a reinforced middle frame) for a display card according to another embodiment of the present application;

FIG. 8 is a schematic front view of a reinforced middle frame according to another embodiment of the present application;

FIG. 9 is a schematic view of the back structure of a reinforced middle frame according to another embodiment of the present application;

FIG. 10 is a schematic diagram illustrating a front structure of a gold finger protection cover for a PCIe bridge card according to an embodiment of the application;

FIG. 11 is a schematic view illustrating a structure of a back surface of a gold finger protection cover of a PCIe bridge card in accordance with another embodiment of the present application;

FIG. 12 is a schematic cross-sectional view of a PCIe bridge card golden finger protector sleeved on a plug portion according to another embodiment of the present application;

Fig. 13 is a schematic structural diagram of a PCIe bridge card golden finger protection cover according to another embodiment of the present application mounted on a server graphics card.

Reference numerals

10. A top connection plate; 11. a side connection plate; 12. a first elastic clamping piece; 13. a back connecting plate; 14. connecting an ear plate; 15. a clip mounting hole; 16. a second elastic clamping piece; 17. a vent hole; 20. a first air return plate; 21. a second air return plate; 22. an air return ear plate; 23. connecting a reinforcing ear plate; 30. a heat conductive plate; 31. an air-cooled fin group; 32. a heat dissipation boss; 40. a heat radiation fan; 50. cold row; 51. a soaking plate; 52. a ground connection post; 60. a PCB board; 61. a plug-in part; 70. a back plate; 71. locking and attaching a spring plate; 72. locking and attaching a screw; 73. a grounding spring; 80. strengthening the middle frame; 81. a first fin group; 82. a second fin group; 83. a heat radiation fin; 84. a heat conduction groove; 85. the GPU avoids the through hole; 90. a protective outer cover; 91. a first through hole; 92. a second through hole; 93. a third through hole; 94. clamping the support arm; 95. a connection part; 96. a bonding sub-section; 97. a guide end; 98. disengaging from the groove; 99. and (5) positioning blocks.

Detailed Description

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

It should be noted that, without conflict, the following embodiments and features in the embodiments may be combined with each other; and, based on the embodiments in this disclosure, all other embodiments that may be made by one of ordinary skill in the art without inventive effort are within the scope of the present disclosure.

It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

As an embodiment of the present utility model, as shown in fig. 1 to 2, a fan fast fixing bracket is provided, which is used for fast mounting an active cooling fan on a cold row (i.e., a passive cooling unit) of a radiator to fast increase the cooling efficiency of the original radiator so as to ensure the stable operation of the GPU.

Comprising the following steps: the device comprises a top connecting plate 10, two side connecting plates 11, a back connecting plate 13, a first elastic clamping piece 12 and a bottom return air cavity. The structure is made of the same plate through sheet metal bending.

The two side connection plates 11 are fixedly connected to two opposite side ends of the top connection plate 10, respectively. The two first elastic clamping pieces 12 are respectively and fixedly connected to one side edge end, far away from the top connecting plate 10, of the two side connecting plates 11, the top connecting plate 10, the side connecting plates 11 and the first elastic clamping pieces 12 are enclosed to form a clamping cavity, and the shape of the clamping cavity is adapted to the shape of the passive heat dissipation unit and is used for being sleeved on the outer side of the passive heat dissipation unit.

As shown in fig. 1 to 2, in particular, the connection firmness between the fan quick-fixing bracket and the passive heat-dissipating unit may be adjusted by adjusting the mating relationship between the clamping chamber and the passive heat-dissipating unit and/or by adjusting the degree to which the two first elastic clamping pieces 12 are biased to one side of the clamping chamber.

Further, the fan quick-fix bracket further includes a plurality of second resilient clamping tabs 16.

The top connecting plate 10 and the two side connecting plates 11 are provided with clamping piece mounting holes 15. The second elastic clamping piece 16 is fixedly connected in the clamping piece mounting hole 15. The second resilient clamping piece 16 is used to provide a clamping force to the passive heat dissipating unit.

The second elastic clamping piece 16 can likewise be produced by sheet metal bending. By providing a plurality of second elastic clamping pieces 16, the clamping force caused by elastic deformation can be released from the passive heat dissipating unit in a plurality of directions. And the connection firmness between the fan rapid fixing support and the passive radiating unit can be further improved.

As shown in fig. 1 to 2 and 4, the back connection plate 13 is fixedly connected to the side ends of the top connection plate 10 and the side connection plate 11, which are far from the end where the passive heat dissipation unit is inserted. The back connection plate 13 is used for connecting the active heat dissipation fan 40.

The back connecting plate 13 is provided with a plurality of connecting lugs 14, the connecting lugs 14 are fixedly connected with the side connecting plates 11, and the connecting lugs 14 are positioned in the clamping chamber.

Specifically, the connection lug plate 14 is abutted against the inner side wall of the side connection plate 11, and the connection lug plate 14 is in riveted connection with the side connection plate 11. The connection strength between the back connection plate 13 and the side connection plate 11 can be enhanced by this connection, while also facilitating the fixing of the relative position between the back connection plate 13 and the side connection plate 11.

Meanwhile, as the connecting lug plate 14 is propped against the inner side wall of the side connecting plate 11, after the passive heat radiating unit is inserted into the clamping cavity, one end face of the passive heat radiating unit is propped against the connecting lug plate 14 finally, so that the installation and positioning effects can be achieved.

As shown in fig. 1, the height of the connection ear plate 14 (i.e., H1 in fig. 1) is smaller than the minimum distance (i.e., L1 in fig. 1) between the clip mounting holes 15 and the inner side wall of the back connection plate 13. Thereby, it is ensured that the wind blown by the heat radiation fan 40 does not escape from the clip mounting hole 15, and the wind quantity finally entering the passive heat radiation unit is ensured to be unchanged.

As shown in fig. 2, the back connection plate 13 is provided with a vent hole 17. The height of the back connection plate 13 (i.e. H2 in fig. 2) is greater than the height of the clamping chamber (i.e. L2 in fig. 2), and the bottom end of the back plate of the back connection plate 13 protrudes from the bottom of the clamping chamber. The bottom end of the back plate is a side end of the back connecting plate 13 opposite to the top connecting plate 10.

Specifically, since the ventilation hole 17 is used to introduce the wind generated by the cooling fan 40, the larger the ventilation hole 17 is, the larger the amount of wind introduced is. But since the back connection plate 13 is obtained by a sheet metal process, the vent holes 17 are punched from sheet metal. When the edge of the vent hole 17 is too close to the edge of the back connection plate 13, the edge of the back connection plate 13 is deformed during punching, so that the height of the back connection plate 13 needs to be increased in order to reserve a sufficient distance between the edge of the vent hole 17 and the edge of the back connection plate 13.

After the height of the back connecting plate 13 is increased, the bottom of the back connecting plate 13 protrudes out of the clamping chamber, so that a bottom return air chamber is designed to solve the problem that the air quantity can be leaked at the part.

The bottom return air cavity is fixedly connected to the bottom end of the backboard. For returning wind leaking from the lower part of the back connection plate 13 back into the clamping chamber.

Specifically, as shown in fig. 1, the bottom return air chamber includes: a first return air plate 20, a second return air plate 21 and two return air ear plates 22.

The first air return plate 20 is vertically and fixedly connected to the bottom end of the back plate. One end of the second air return plate 21 is fixedly connected to one end, away from the bottom end of the backboard, of the first air return plate 20, and the other end of the second air return plate abuts against the bottom of the clamping chamber. The two return air ear plates 22 are respectively and fixedly connected to the two side connecting plates 11, and enclose a bottom return air cavity together with the first return air plate 20 and the second return air plate 21. Further, the included angle between the first air return plate 20 and the second air return plate 21 is 90 degrees to 150 degrees. Which in this embodiment may be 90. Preferably, the included angle is larger than 90 degrees, so that a certain air guiding inclined plane can be formed, and air can enter the passive heat dissipation unit conveniently.

Through setting up the return air chamber at the bottom, can guarantee the connection leakproofness of whole fan quick fixed bolster, can prevent from revealing by the wind that radiator fan 40 produced from this, guaranteed and then passive radiating element's amount of wind, improve radiating efficiency.

The second return air plate 21 is provided with a connection reinforcing lug plate 23 near one end of the clamping chamber, and the connection reinforcing lug plate 23 is used for being connected with the passive heat dissipation unit through screws.

The connection firmness between the fan rapid fixing support and the passive radiating unit can be further improved through the screws. Meanwhile, since the bottom of the passive heat dissipating unit is generally the heat conducting plate 30, it is more convenient to fix the heat dissipating unit by using screws, thereby disposing the connection reinforcing ear plate 23 at the end of the second air return plate 21 close to the clamping chamber, that is, at the position close to the bottom of the passive heat dissipating unit.

According to a second aspect of the present utility model, as shown in fig. 3 to 4, there is also provided a heat dissipating module including: a plurality of cooling fan 40 units, an air-cooled fin group 31, a heat-conducting plate 30, and a fan quick-fixing bracket in the above-described embodiment.

As shown in fig. 4, each of the radiator fan 40 units includes a plurality of radiator fans 40 arranged in series.

The cooling fan 40 unit is fixedly connected to the back connection plate 13, and the rotation axis of the cooling fan 40 coincides with the central axis of the vent hole 17.

As shown in fig. 3, the air-cooled fin group 31 is formed by arranging a plurality of sub-fins at intervals.

The heat conducting plate 30 is fixedly connected with the air-cooled radiating fin group 31, and a radiating boss 32 is arranged on one side surface of the heat conducting plate 30 opposite to the air-cooled radiating fin group 31 and is used for fully contacting with a heat source. The air-cooled radiating fin group 31 and the heat conducting plate 30 form a passive radiating unit. The heat dissipation fan 40 unit is an active heat dissipation unit.

In this embodiment, the fan can be fast fixed to the bracket, so as to achieve fast assembly of the active and passive heat dissipation units, thereby forming a heat dissipation module with higher heat dissipation efficiency.

As an embodiment of the present utility model, as shown in fig. 5 to 6, there is provided a ground structure for a display card, including: the heat sink, the PCB 60, the locking spring plate 71, the locking screw 72 and the grounding spring 73.

The radiator is arranged on the GPU of the display card and used for radiating the GPU. The bottom of the heat sink is provided with a plurality of ground connection studs 52. Specifically, the heat sink includes: the cold row 50 (i.e., the air-cooled fin group 31) and the soaking plate 51.

The cold row 50 is used for heat dissipation. The vapor chamber 51 is disposed at the bottom of the cold row 50, a thermal interface material (TIM 2) is disposed between the vapor chamber 51 and the GPU, and the ground connection post 52 is disposed on the surface of the vapor chamber 51 near the PCB 60.

The PCB board 60 is used for mounting electrical components. A connecting through hole is formed in the PCB board 60 at a position corresponding to the grounding connection post 52, and metal pads are arranged at two ends of the connecting through hole and are electrically connected with the grounding metal layer in the PCB board 60. Specifically, the back plate 70 is provided with a spring plate accommodating through hole for accommodating and placing the locking spring plate 71.

The locking spring plate 71 is abutted against a surface of the PCB 60 opposite to the radiator, and the corner portion of the locking spring plate 71 is tilted to a side far away from the PCB 60.

As shown in fig. 6, the locking screw 72 is connected between the corner portion of the locking spring piece 71 and the ground connection post 52 through the connection through hole. The grounding spring 73 is sleeved on the grounding connection post 52, one end of the grounding spring is propped against the bottom of the radiator, and the other end of the grounding spring is propped against the metal pad.

The grounding operation of the metal radiator and the locking spring piece 71 in the display card can be realized through the connection and conduction of the grounding spring 73.

Typically, in a graphics card, a secondary heating element (e.g., a double rate synchronous dynamic random access memory, etc.) is provided on the PCB board 60 in addition to the GPU. And generally, the secondary heating elements are distributed in the length direction of the display card and are respectively arranged at two sides of the GPU, and the heights of the GPU and the secondary heating elements are different.

In order to timely discharge the heat of each heating element, a whole radiator is used in the prior art to dissipate the heat of the GPU and the secondary heating elements, and in order to better conduct the heat, a heat conducting pad is adhered to each secondary heating element to make the heat conducting pad better contact with the soaking plate 51 in the radiator. However, since the heights of the GPU and the secondary heating element are different, the heights of the heat conductive pads are different, so that the pressure of the radiator on the GPU is difficult to accurately meet the requirement under the conflict of different heat conductive pads. And the heat conduction resistance of the thermal interface material is increased, and the heat dissipation effect of the GPU is affected.

In another embodiment of the present utility model, as shown in fig. 7, the grounding structure of the radiator and the locking spring 71 further includes: reinforcing the middle frame 80 and the back plate 70.

As shown in fig. 7 to 9, the reinforcing middle frame 80 is abutted against a surface of the PCB board 60 on which the GPU is mounted. The strengthening middle frame 80 is provided with a GPU avoiding through hole 85. The reinforcing middle frame 80 is provided with a first fin group 81 and a second fin group 82 on two sides of the GPU avoiding through hole 85, and the first fin group and the second fin group are used for radiating heat of the secondary heating elements distributed on two sides of the GPU. The first fin group 81 is disposed at one side of the air inlet of the radiator. The second fin group 82 is disposed at an air outlet side of the radiator. The reinforcing center 80 is integrally formed by die casting.

Specifically, as shown in fig. 8 to 9, each of the first fin group 81 and the second fin group 82 includes: a plurality of heat radiating fins 83 and heat conducting grooves 84.

The plurality of heat dissipating fins 83 are disposed on the reinforcing middle frame 80 at intervals, and the height of the heat dissipating fins 83 in the first fin group 81 is smaller than the lowest height of the cold row 50 in the radiator.

The heat conducting groove 84 is provided on a surface of the reinforcing center 80 opposite to the heat radiating fins 83, and the heat conducting groove 84 communicates the mounting area of the secondary heating element with the mounting area of the heat radiating fins 83. The thermally conductive slot 84 is configured to receive a heat pipe and/or a thermal pad. The heat conduction grooves 84 in the first fin group 81 are different from the groove depths of the heat conduction grooves 84 in the second fin group 82.

In this embodiment, by additionally providing a heat dissipation component for the secondary heating element on the reinforcing middle frame 80: the first fin group 81 and the second fin group 82. Therefore, the radiator for radiating the GPU and the radiating component for the secondary heating element can be independently arranged, and mutual influence is avoided. And further, the normal heat dissipation of the GPU can be ensured.

The back plate 70 is abutted against a surface of the PCB 60 opposite to the GPU. The back plate 70 is fixedly connected with the reinforcing middle frame 80 through screws. Meanwhile, the back plate 70 and the reinforced middle frame 80 are also contacted with metal pads on the PCB board 60, so as to realize the grounding work of the back plate 70 and the reinforced middle frame 80.

As an embodiment of the present utility model, as shown in fig. 10 to 12, a PCIe bridge card golden finger protection cover includes: the protective housing 90 and two clamp arms 94.

As shown in fig. 10, the protection cover 90 is sleeved on the plug portion of the bridge card. The material of the protective housing 90 and the two clamping arms 94 is PC (polycarbonate), and is prepared by injection molding, so that the clamping arms 94 can be ensured to have elastic deformation capability, and meanwhile, the protective housing has higher tensile property, and the clamping arms 94 can be prevented from breaking in the process of being opened again.

In addition, as shown in fig. 12, in order to further prevent breakage during the process of re-expanding the clip arms 94, rounded corners may be provided between the connecting portion 95 and the surfaces connected in the internal cavity. And the connection portion 95 is provided in an arc-shaped arm structure.

A first through hole 91 is provided on a surface of the protective housing 90 facing the insertion portion to communicate with an inner cavity of the protective housing 90. The first through hole 91 is mainly used for avoiding the plugging portion of the bridge card, so that the bridge card can be smoothly plugged. Meanwhile, the length of the first through hole 91 is smaller than the length of the protective housing 90. It is possible to make a partial physical connection still exist at the edge end of this side, thereby ensuring the structural strength of the protective cover 90.

As shown in fig. 10 to 11, second through holes 92 are formed in both end surfaces in the length direction of the protective housing 90 to communicate with the internal cavity of the protective housing 90. The second through hole 92 mainly removes materials at two end surfaces of the protective outer cover 90 in the length direction, so that the protective outer cover 90 can be ensured not to have larger wall thickness at the position, and obvious shrinkage deformation at the position in the injection molding process can be avoided.

Meanwhile, by correspondingly forming the first through hole 91 or the second through hole 92 on each wall of the protective cover 90, on one hand, other components can be avoided, and meanwhile, the weight of the whole protective cover can be reduced. In addition, the wall thickness of the protective cover 90 can be ensured to be uniform as much as possible, so that the problem of shrinkage deformation during injection molding can be avoided as much as possible.

As shown in fig. 12, two clamping arms 94 are oppositely disposed in the interior cavity of the protective housing 90 to form a clamping cavity.

Specifically, the clamp arm 94 has a connecting portion 95 and a clamping portion. The connection portion 95 is fixedly provided on an inner side surface of the inner cavity opposite to the first through hole 91, and the clamping portion extends to a side close to the first through hole 91. The distance between the connecting portions 95 in the two clamping arms 94 is greater than the distance between the clamping portions. The minimum distance between the two clamping parts is smaller than the maximum thickness of the plug-in part of the bridge card.

Specifically, the clamping portion includes a guide tip 97 and a laminating sub-portion 96.

The guiding tip 97 is arranged at one end of the clamping part close to the first through hole 91, and a guiding inclined plane is arranged at one side of the guiding tip 97 contacted with the plugging part. The guiding inclined surface on the guiding end 97 is beneficial to providing a certain guiding and positioning function when the inserting and pulling part penetrates into the clamping cavity so as to ensure the smooth penetration of the inserting and pulling part.

The attaching sub-portion 96 is connected between the guiding end 97 and the connecting portion 95, and a side surface of the attaching sub-portion 96, which contacts with the inserting and pulling portion, is a plane for being abutted and covered on the golden finger.

After the insertion of the plug part is completed, the attaching sub-part 96 is just clamped at the position of the golden finger, so that the golden finger can be completely covered and coated through the attaching sub-part 96. So as to avoid the gold finger from being exposed to the air for a long time, further slow down the oxidization and avoid the occurrence of pollution. In order to better cover the gold finger, it is preferable that one side surface of the attaching sub-portion 96, which contacts the insertion and extraction portion, is made of an elastic material. For example, the elastic material can be rubber or silica gel. At this time, the attaching sub-portion 96 is tightly wrapped on the surface of the golden finger under the action of the elastic force, so as to improve the tightness of the wrapping.

In addition, as shown in fig. 10 to 11, a positioning block 99 is provided in the inner cavity of the protection cover 90. In general, the plug-in part is composed of several sub-parts with different lengths, and the sub-parts are mutually arranged at intervals. Thus, the locating blocks 99 may preferentially penetrate the spaces between the various sub-portions to provide guidance during the nesting of the protective cover 90 into the plug portion. In addition, the positions where the intervals are generated are not in the middle of the whole plugging part due to the different lengths of the sub parts. Based on this feature, the positioning block 99 also has a function of mounting anti-reflection.

As shown in fig. 11, a third through hole 93 is formed in a side wall of the protection housing 90 connected to the clamping arm 94, so as to communicate with the internal cavity of the protection housing 90. The third through hole 93 is mainly used for avoiding interference between the inserted and extracted portion and the top of the protective housing 90. A disengagement recess 98 is provided in a side wall of the protective housing 90. The disengagement groove 98 can facilitate the smooth insertion of a finger into the protective cover during removal, thereby allowing the protective cover to be pulled out smoothly.

According to another aspect of the present utility model, there is provided a server graphic card including:

The grounding structure for the display card and the gold finger protection cover for the PCIe bridging card are described. As shown in fig. 13, the PCIe bridge card golden finger protection cover is detachably connected to the plug portion 61.

The present utility model is not limited to the above embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. A fan quick-fixing bracket, comprising:

The device comprises a top connecting plate and two side connecting plates, wherein the two side connecting plates are respectively and fixedly connected to two opposite side edges of the top connecting plate;

the two first elastic clamping pieces are respectively and fixedly connected to one side edge end, far away from the top connecting plate, of the two side connecting plates, the top connecting plate, the side connecting plates and the first elastic clamping pieces are enclosed to form a clamping cavity, the shape of the clamping cavity is matched with the shape of the passive heat dissipation unit, and the clamping cavity is used for being sleeved on the outer side of the passive heat dissipation unit;

The back connecting plate is fixedly connected to the side edge end, far away from the end inserted into the passive heat radiating unit, of the top connecting plate and the side connecting plate; the back connecting plate is used for connecting an active cooling fan;

the back connecting plate is provided with a plurality of connecting lug plates which are fixedly connected with the side connecting plates and are positioned in the clamping cavity; the back connecting plate is provided with a vent hole; the height of the back connecting plate is larger than that of the clamping chamber, and the bottom end of the backboard of the back connecting plate protrudes out of the bottom of the clamping chamber; the bottom end of the backboard is a side end of the back connecting board opposite to the top connecting board;

The bottom return air cavity is fixedly connected to the bottom end of the backboard; for returning wind leaking from the lower part of the back connection plate into the clamping chamber.

2. The fan quick-connect mounting bracket of claim 1, wherein said bottom return air cavity comprises:

the first air return plate is vertically and fixedly connected to the bottom end of the back plate;

one end of the second air return plate is fixedly connected to one end, far away from the bottom end of the back plate, of the first air return plate, and the other end of the second air return plate is propped against the bottom of the clamping cavity;

The two return air ear plates are respectively and fixedly connected to the two side connecting plates and jointly enclose the first return air plate and the second return air plate into the bottom return air cavity.

3. The fan quick-connect bracket of claim 1 further comprising a plurality of second resilient clamping tabs;

clamping piece placement holes are formed in the top connecting plate and the two side connecting plates;

The second elastic clamping piece is fixedly connected to the clamping piece accommodating hole; the second elastic clamping piece is used for providing clamping force for the passive heat dissipation unit.

4. The quick fixing bracket of claim 1, wherein the lug plate is abutted against the inner side wall of the side connecting plate, and the lug plate is riveted with the side connecting plate.

5. A fan quick-attach bracket according to claim 3 wherein the height of the attachment lugs is less than the minimum distance between the clip receiving openings and the back attachment plate inner side wall.

6. The fan quick-fixing bracket according to claim 2, wherein the second return air plate is provided with a connection reinforcing lug at one end thereof adjacent to the clamping chamber, and the connection reinforcing lug is used for screw connection with the passive heat dissipating unit.

7. The quick fixing bracket of claim 1, wherein the top connecting plate, the two side connecting plates, the back connecting plate and the bottom return air chamber are made of the same plate material by sheet metal processing.

8. A fan quick-action mounting bracket as set forth in claim 2 wherein said first return air panel is angled between 90 ° and 150 ° relative to said second return air panel.

9. A heat dissipating module, comprising:

A plurality of radiator fan units, each of which comprises a plurality of radiator fans arranged in series; and

A fan quick-fixing bracket as claimed in any one of claims 1 to 7, wherein said radiator fan unit is fixedly connected to said back connection plate, and a rotation axis of said radiator fan coincides with a central axis of said ventilation hole.

10. The heat dissipating module of claim 9, further comprising:

the air-cooling radiating fin group is formed by arranging a plurality of sub fins at intervals;

The heat conducting plate is fixedly connected with the air-cooled radiating fin group, and a radiating boss is arranged on one side surface of the heat conducting plate opposite to the air-cooled radiating fin group and used for fully contacting with a heat source; the air-cooled radiating fin group and the heat conducting plate form the passive radiating unit.