CN220378556U - Fan fixing structure and driver - Google Patents

Abstract

The utility model discloses a fan fixing structure and a driver, wherein the driver comprises: the fan fixing structure comprises a fixing seat and a radiating seat, wherein the fixing seat is formed with a mounting cavity, and the mounting cavity is used for inserting and clamping the fan; the heat dissipation seat is at least partially connected with the fixed seat integrally, the outer wall of the heat dissipation seat is provided with a spring buckle, and the spring buckle is used for being clamped and matched with the die casting; the heat dissipation seat is used for enclosing with the shell to form an independent heat dissipation air channel, the die casting is arranged in the heat dissipation air channel, and the fan is used for blowing air to the heat dissipation air channel so as to dissipate heat of the die casting and the heating device arranged in the heat dissipation air channel. The fan fixing structure and the driver increase the installation convenience of the fan and quicken the production efficiency.

Description

Fan fixing structure and driver

Technical Field

The present utility model relates to the field of power electronics, and more particularly, to a fan fixing structure and a driver.

Background

In the running process of low-voltage frequency conversion and servo operation control products, a fan is usually required to dissipate heat, so that the design of mounting and fixing the fan is particularly important in the whole structural system, and in the prior art, the fan is usually directly clamped on external equipment needing to dissipate heat, or is fixed on the external equipment needing to dissipate heat, such as a frequency converter or a controller, through screws. The fan is directly clamped on external equipment, and the elastic deformation at the two sides of the fan is used for clamping the fan, so that the frames at the two sides of the fan are deformed, and the problem of fan blades is caused; the fan is fixed on external equipment by adopting the screw, and the scheme needs to add hole sites on the fan, so that the installation procedure is complex, and the production cost of the fan is increased.

In view of the foregoing, it is desirable to provide a fan fixing structure and a driver that solve or at least alleviate the above-mentioned technical drawbacks.

Disclosure of Invention

The utility model mainly aims to provide a fan fixing structure and a driver, and aims to solve the problem of complicated fan installation procedures in the prior art.

In order to achieve the above object, the present utility model provides a fan fixing structure applied to a driver, the driver comprising: the fan fixing structure comprises a fixing seat and a heat dissipation seat, wherein the fixing seat is provided with an installation cavity, the installation cavity is used for allowing the fan to be inserted and clamped and fixed, the heat dissipation seat is at least partially connected with the fixing seat in an integrated manner, an elastic buckle is arranged on the outer wall of the heat dissipation seat and used for being matched with the die casting in a clamping manner, the heat dissipation seat is used for being enclosed with the outer shell to form an independent heat dissipation air duct, the die casting is arranged in the heat dissipation air duct, and the fan is used for blowing air to the heat dissipation air duct so as to radiate heat of the die casting and a heating device arranged in the heat dissipation air duct.

In an embodiment, the fixing base comprises a first bottom plate and two end plates, the two end plates are respectively arranged at two opposite ends of the first bottom plate, the first bottom plate and the two end plates enclose a mounting cavity, the heat dissipation base is connected to one end of the first bottom plate, a limiting component is formed on the outer cavity wall of the mounting cavity, and the limiting component is used for fixing the fan.

In one embodiment, the fan has a mounting hole, and the limiting assembly includes: and one side of each end plate far away from the heat radiating seat extends along the direction perpendicular to the end plate to form the spring arm, one end of the spring arm far away from the end plate is provided with a positioning boss at one side facing the mounting cavity, and the positioning boss is used for abutting against the mounting hole to fix the fan.

In an embodiment, the spacing subassembly still includes the limiting plate, two the end plate includes first end plate and second end plate, first end plate set up in first bottom plate is close to the one end of heat dissipation seat, the second end plate set up in first bottom plate is kept away from the one end of heat dissipation seat, first end plate is kept away from one side of heat dissipation seat is along the perpendicular to direction extension of end plate is formed with first limiting plate, the both sides of second end plate are along the perpendicular to direction extension of end plate becomes to have two second limiting plates, the heat dissipation seat is close to the partial structure of first end plate first limiting plate, and two the second limiting plate cooperate with the both sides of fan support tightly.

In one embodiment, at least one reinforcing rib is formed on the side of each end plate facing the mounting cavity, and the reinforcing rib is used for abutting against the end part of the fan.

In an embodiment, the number of the elastic buckles is plural, and the plurality of elastic buckles are arranged at the bottom of the heat dissipation seat at intervals.

In an embodiment, the heat dissipation seat includes second bottom plate, curb plate and at least one installation section of thick bamboo, curb plate fixed connection in first bottom plate is kept away from the one end of fixing base, set up a plurality of interval arrangement's through-holes on the second bottom plate, the through-hole is followed to keep away from the direction of second bottom plate extends and forms a plurality of installation section of thick bamboo, the installation section of thick bamboo is used for fixed heating element, heating element includes electric capacity, electric capacity with installation section of thick bamboo one-to-one.

In an embodiment, the heat dissipation seat and the fixing seat are in an L-shape.

In addition, the utility model also provides a driver, which comprises a shell, a fan, a die casting and the fan fixing structure.

In an embodiment, the die casting comprises a base and a radiating fin, the elastic buckle is matched with the base in a clamping manner, the radiating fin is arranged in the radiating air duct, and the fan is used for blowing air to the radiating air duct so as to radiate heat of the radiating fin and the heating device arranged in the radiating air duct.

According to the technical scheme, the fan fixing structure comprises the fixing seat and the radiating seat, the mounting cavity is formed in the fixing seat, the shape of the mounting cavity is matched with that of the fan and is used for fixing the fan in the mounting cavity, and therefore the fixing seat can stably mount the fan. The heat dissipation seat is connected with the fixing base, and the outer wall of the heat dissipation seat is connected with the elastic buckle, and the heat dissipation seat is connected with the die casting through the elastic buckle in a clamping mode, so that the heat dissipation seat is connected with the die casting. After the heat dissipation seat is matched with the die casting in a clamping way, the fixing seat can be indirectly abutted with the die casting, the fixing seat is abutted with the die casting to increase the stability of the fixing seat, so that the fan can have higher stability after being installed on the fixing seat, the die casting is provided with the heat dissipation fins, when the fan is installed on the die casting through the fixing seat, the air flow generated by the fan can be blown to the heat dissipation fins and flows into the heat dissipation air duct through the heat dissipation fins, so that the heat dissipation efficiency of the fan is improved, the die casting and the heating device arranged in the heat dissipation air duct can be used for rapidly dissipating heat, and the fan fixing structure can be an integrally formed part, so that the fan fixing structure is convenient to manufacture, the production cost of the fan fixing structure can be effectively reduced, the integrally formed fan fixing structure has higher structural stability, and the maintenance cost of the fan fixing structure is further reduced.

Drawings

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

FIG. 1 is a schematic diagram of a fan fixing structure according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a fan fixing structure according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a fan according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a fan fixing structure, a die casting and a fan according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a fan fixing structure, die casting and a fan according to an embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of a fan installed in a fan fixing structure installation cavity according to an embodiment of the present utility model;

FIG. 7 is a schematic cross-sectional view of a fan fixing structure and a die casting according to an embodiment of the utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Fan fixing structure	121	First end plate
1	Fixing seat	122	Second end plate
				2	Heat dissipation seat	1211	First limiting plate
11	First bottom plate	1212	Second limiting plate
				22	Heat dissipation air duct	123	Reinforcing rib
13	Mounting cavity	21	Second bottom plate
				131	Spring arm	22	Side plate
1311	Positioning boss	23	Mounting cylinder
				3	Fan with fan body	24	Through hole
4	Die casting	25	Spring fastener
				31	Mounting hole	41	Base seat
42	Radiating fin

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The technical solutions of the present embodiment will be clearly and completely described below with reference to the drawings in the present embodiment, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1 to 7, the present utility model provides a fan fixing structure 100, which is applied to a driver, and the driver may include: the fan fixing structure 100 can comprise a fixing seat 1 and a heat dissipation seat 2, wherein the fixing seat 1 is provided with a mounting cavity 13, and the mounting cavity 13 is used for inserting and clamping the fan 3 to fix the fan 3; the heat dissipation seat 2 can be at least partially connected with the fixing seat 1 integrally, and the outer wall of the heat dissipation seat 2 can be provided with a spring buckle 25, and the spring buckle 25 is used for being matched with the die casting 4 in a clamping way so as to fix the die casting 4.

In this embodiment, the heat dissipation seat 2 may be enclosed with the housing to form an independent heat dissipation air channel 22, the heat dissipation seat 2 may be fixed with a heat generating device, the die casting 4 is disposed in the heat dissipation air channel 22, and the fan 3 is used for blowing air to the heat dissipation air channel 22, so that the die casting and the heat generating device disposed in the heat dissipation air channel 22 may be effectively cooled for heat dissipation.

In this embodiment, a part of the heat generating device may be connected to the die casting 4, and heat is conducted to the die casting 4, thereby dissipating heat through the die casting 4. The die casting 4 may be used for heat dissipation of a device with a higher heat generation amount, and some devices with a medium or lower heat generation amount may be fixed on the heat dissipation base 2 for air cooling heat dissipation, or may be cooled by other possible heat dissipation manners, or the heat dissipation base 2 may not be fixed with a heat generating device, and may specifically be designed according to an actual heat generation situation of the device, which is not limited in the embodiment of the present disclosure.

In the technical scheme of this embodiment, the fan fixing structure 100 includes the fixing base 1 and the heat dissipation base 2, the installation cavity 13 is formed in the fixing base 1, and the shape of the installation cavity 13 matches with the shape of the fan 3 for fix the fan 3 in the installation cavity 13, thereby make the fixing base 1 can be with fan 3 installation firm. The heat dissipation seat 2 is connected with the fixing seat 1, and the outer wall of the heat dissipation seat 2 is connected with the elastic buckle 25, and the heat dissipation seat 2 is connected with the die casting 4 in a clamping manner through the elastic buckle 25, so that the heat dissipation seat 2 is connected with the die casting 4.

In this embodiment, after the heat dissipation seat 2 cooperates with the die casting 4 joint, the fixing base 1 can indirectly abut against the die casting 4, through making fixing base 1 and die casting 4 abut against, so as to increase the stability of fixing base 1, and then make the fan 3 install and can have higher stability behind fixing base 1, die casting 4 has radiating fins, after the fan 3 is installed in die casting 4 through fixing base 1, the produced air current of fan 3 can blow radiating fins, and flow into the heat dissipation wind channel 22 through radiating fins, in order to accelerate the radiating efficiency of fan 3, make die casting 4 and the heating element that sets up in heat dissipation wind channel 22 can dispel the heat fast. It should be understood that, of course, the fan 3 may be an induced draft fan, and may be specifically determined according to practical situations, which is not limited in this embodiment of the present disclosure.

In this embodiment, the fan fixing structure 100 may be an integrally formed part, so that the fan fixing structure 100 in this embodiment is convenient to manufacture, the production cost of the fan fixing structure 100 can be effectively reduced, and the integrally formed fan fixing structure 100 has higher structural stability, thereby reducing the maintenance cost of the fan fixing structure 100.

In an embodiment, the fixing base 1 may include a first bottom plate 11 and two end plates, the two end plates are respectively disposed at two opposite ends of the first bottom plate 11, the first bottom plate 11 and the two end plates enclose a mounting cavity 13, the heat dissipation base 2 is connected to one end of the first bottom plate 11 and connected to one end plate, and a limiting component is formed on an outer cavity wall of the mounting cavity 13 and is used for fixing the fan 3. The fan has mounting hole 31, and spacing subassembly includes: the spring arms 131, one side of each end plate far away from the heat dissipation seat 2 extends along the direction perpendicular to the end plate to form the spring arms 131, one end of each spring arm 131 far away from the end plate is provided with a positioning boss 1311 on one side facing the mounting cavity 13, and the positioning boss 1311 is used for abutting the mounting hole to fix the fan.

In this embodiment, the limiting component is the spring arm 131, one end of the spring arm 131 is connected to the inner wall of the mounting cavity 13, the other end of the spring arm 131 is a free end and can bend in a direction away from the mounting cavity 13, and in the process of mounting the fan 3 in the mounting cavity 13, the mounting hole 31 of the fan 3 can be aligned with the free end of the spring arm 131, so that the free end of the spring arm 131 extends into the mounting hole 31 of the fan 3. After the fan 3 stretches into the installation cavity 13, the free end of the spring arm 131 can limit the fan 3, so that the fan 3 is prevented from generating displacement in the installation cavity 13, and the installation stability of the fan 3 is improved.

Further, each end plate has a spring arm 131 towards one side of the mounting cavity 13, one end of the spring arm 131 is connected with the corresponding end plate, the other end of the spring arm 131 is formed with a positioning boss 1311, the positioning boss 1311 is arranged towards the mounting cavity 13, and the positioning boss 1311 is used for extending into the mounting hole 31 and being in clamping fit with the mounting hole 31. The positioning boss 1311 is a hemispherical bump. The number of the spring arms 131 in this embodiment is two, the two spring arms 131 are respectively and correspondingly connected to one side of the two end plates facing the mounting cavity 13, the free ends of the spring arms 131 are respectively formed with a positioning boss 1311, and the positioning bosses 1311 are arranged facing the mounting cavity 13, so that the positioning bosses 1311 can extend into the mounting holes 31 of the fan 3.

In this embodiment, in the process of installing the fan 3 in the installation cavity 13, one side of the fan 3 facing the spring arm 131 can squeeze the positioning boss 1311, so that the positioning boss 1311 pushes the free end of the spring arm 131 to move in a direction away from the installation cavity 13 until the installation hole 31 of the fan 3 coincides with the position of the positioning boss 1311, the two sides of the fan 3 stop squeezing the positioning boss 1311, and the spring arm 131 relies on its own elastic force to enable the positioning boss 1311 to move in a direction close to the installation cavity 13, so that the positioning boss 1311 is clamped into the installation hole 31.

The positioning boss 1311 may be a hemispherical bump, so that the positioning boss 1311 can be conveniently clamped into the mounting hole 31 of the fan 3. It will be understood, of course, that the positioning boss 1311 may be implemented as a cross-shaped post or may take other possible configurations, such as a cylindrical positioning post, a positioning pin, a positioning stud, etc., which may be specifically determined according to practical situations, and the embodiment of the present disclosure is not limited thereto.

In an embodiment, the limiting assembly may further include a limiting plate, the two end plates include a first end plate 121 and a second end plate 122, the first end plate 121 is disposed at an end of the first bottom plate 11 near the heat dissipation seat 2, the second end plate 122 is disposed at an end of the first bottom plate 11 far away from the heat dissipation seat 2, a first limiting plate 1211 is formed at a side of the first end plate 121 far away from the heat dissipation seat 2, and the first limiting plate 1211 is disposed perpendicular to the first end plate 121 and extends towards the second end plate 122; two second limiting plates 1212 are formed on two sides of the second end plate 122, the second limiting plates 1212 are perpendicular to the second end plate 122 and extend towards the first end plate 121, and two sides of the fan 3 can be abutted by the partial structure of the heat dissipation base 2, which is close to the first end plate, the first limiting plates 1211 and the two second limiting plates 1212.

In this embodiment, after the fan 3 is mounted in the mounting cavity 13, the portion of the heat dissipation seat 2 connected to the fixing seat and the first limiting plate 1211 formed by the first end plate 121 abut against one side of the fan 3, and the two second limiting plates 1212 formed by the second end plate 122 abut against the other side of the fan 3, so that the fan 3 can be stably mounted in the mounting cavity 13.

In some embodiments, the first end plate 121 may further extend to form two first limiting plates 1211 along a direction perpendicular to the end plate, so as to limit one side of the fan 3, which may be specifically determined according to practical situations, and this embodiment is not limited in this specification.

In an embodiment, the side of each end plate facing the mounting cavity 13 may have at least one stiffening rib 123, the stiffening rib 123 being adapted to abut against the end of the fan 3. The reinforcing ribs 123 are vertically extended in the installation cavity 13. The number of the reinforcing ribs 123 formed on each end plate in this embodiment may be plural to increase the structural strength of the end plate. When the number of the reinforcing ribs 123 is plural, the plural reinforcing ribs 123 are disposed at intervals along the extending direction of the end plate, which is the left-right direction shown in fig. 1.

In an embodiment, the heat dissipation base 2 may include a second bottom plate 21, a side plate 22 and at least one mounting cylinder 23, where the second bottom plate 21 and the side plate 22 are connected to each other and enclose a heat dissipation air duct 22, the side plate 22 is fixedly connected to one end of the first bottom plate 11 away from the fixing base 1, a plurality of through holes 24 arranged at intervals are formed in the second bottom plate 21, the through holes 24 extend along a direction away from the second bottom plate 21 to form at least one mounting cylinder 23, the mounting cylinder 23 is used for fixing a heat generating device, the heat generating device may include capacitors, the capacitors are in one-to-one correspondence with the mounting cylinders, and a capacitor is correspondingly provided in each mounting cylinder.

In this embodiment, the quantity of electric capacity can be a plurality of, and the quantity of electric capacity is unanimous and the one-to-one with the quantity of mounting cylinder 23, and when heat dissipation seat 2 joint in die casting 4, each electric capacity passes corresponding mounting cylinder 23 respectively, and mounting cylinder 23 can play the guard action to the electric capacity, prevents that the electric capacity from receiving the collision, and mounting cylinder 23's top and bottom all are open setting for outside bottom and the bottom of electric capacity can stretch out mounting cylinder 23, in order to dispel the heat to the electric capacity.

In this embodiment, the heat generating device may further include other possible devices, for example: braking resistor, etc., correspondingly, the mounting cylinders can be used for fixing other types of heating devices, and the number and the positions of the mounting cylinders can be designed according to actual heat dissipation requirements and PCB layout, so that the embodiment of the specification is not limited.

In one embodiment, the second base plate 21 is perpendicular to the first base plate 11, and the heat dissipation air duct 22 communicates with the installation cavity 13. In this embodiment, the second bottom plate 21 is perpendicular to the first bottom plate 11, so that the heat dissipation seat 2 can be conveniently mounted on the die casting 4, and the heat dissipation air duct 22 is communicated with the mounting cavity 13, so that the air flow blown out by the fan 3 mounted in the mounting cavity 13 can flow into the heat dissipation air duct 22 to dissipate heat of the die casting 4.

In an embodiment, the number of the latches 25 may be one or more, and when the number of the latches 25 is set to be plural, the plurality of latches 25 are disposed at intervals at the bottom of the second bottom plate 21. Through setting up a plurality of bullet knot 25, can make the connection of heat dissipation seat 2 between die casting 4 more firm, and a plurality of bullet knot 25 interval sets up to further increase the connection stability of heat dissipation seat 2 and die casting 4.

In an embodiment, the heat dissipation seat 2 and the fixing seat 1 are L-shaped, so that the heat dissipation air duct 22 formed by the heat dissipation seat 2 and the fixing seat 1 is L-shaped, which can facilitate the placement of heat generating devices in the heat dissipation air duct 22 and reasonably utilize the space in the heat dissipation air duct 22.

In addition, referring to fig. 4 and 5, the present utility model further provides a driver, where the driver includes a housing, a fan 3, a die casting 4, and a fixing structure 100 of the fan, the die casting 4 includes a base 41 and a heat dissipation fin 42, the latch 25 is engaged with the base 41, the heat dissipation fin 42 is disposed in the heat dissipation air duct 22, and the fan 3 is used for blowing air to the heat dissipation air duct 22 to dissipate heat from the heat dissipation fin 42 and the heat generating device disposed in the heat dissipation air duct 22.

In this embodiment, the base 41 is disposed at the bottom of the heat dissipation air duct 22, and the base 41 and the heat dissipation seat 2 are engaged and matched by the elastic buckle 25, so that the base 41 and the heat dissipation seat 2 are connected firmly, the heat dissipation fins 42 are disposed above the base 41 and are located in the heat dissipation air duct 22, the plurality of heat dissipation fins 22 are disposed at intervals along the left-right direction, each heat dissipation fin 22 extends along the front-rear direction, and when the fan 3 is mounted on the fixing seat 1, the air outlet of the fan 3 is disposed towards the heat dissipation fins and performs blowing and heat dissipation on the heat dissipation fins located in the heat dissipation air duct.

The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).

Claims (10)

1. A fan fixing structure applied to a driver, the driver comprising: shell, fan and die casting, its characterized in that, fan fixed knot constructs for integrated into one piece finished piece, fan fixed knot constructs and includes:

the fixing seat is provided with a mounting cavity, and the mounting cavity is used for the fan to be inserted into and clamped and fixed with the fan;

the heat dissipation seat is at least partially connected with the fixed seat in an integrated manner, and the outer wall of the heat dissipation seat is provided with a spring buckle which is used for being clamped and matched with the die casting;

the heat dissipation seat is used for enclosing with the shell to form an independent heat dissipation air channel, the die casting is arranged in the heat dissipation air channel, and the fan is used for blowing air to the heat dissipation air channel so as to dissipate heat of the die casting and the heating device arranged in the heat dissipation air channel.

2. The fan fixing structure as claimed in claim 1, wherein the fixing base includes:

a first base plate;

the two end plates are respectively arranged at two opposite ends of the first bottom plate, the first bottom plate and the two end plates enclose a mounting cavity, the radiating seat is connected to one end of the first bottom plate, a limiting component is formed on the outer cavity wall of the mounting cavity and used for fixing the fan.

3. The fan fixing structure of claim 2, wherein the fan has a mounting hole, and the limiting assembly comprises: and one side of each end plate far away from the heat radiating seat extends along the direction perpendicular to the end plate to form the spring arm, one end of the spring arm far away from the end plate is provided with a positioning boss at one side facing the mounting cavity, and the positioning boss is used for abutting against the mounting hole to fix the fan.

4. The fan fixing structure as claimed in claim 2, wherein the limiting assembly further comprises a limiting plate, the two end plates comprise a first end plate and a second end plate, the first end plate is disposed at one end of the first bottom plate, which is close to the heat dissipation seat, the second end plate is disposed at one end of the first bottom plate, which is far away from the heat dissipation seat, a first limiting plate is formed by extending one side of the first end plate, which is far away from the heat dissipation seat, along a direction perpendicular to the end plate, two second limiting plates are formed by extending two sides of the second end plate along a direction perpendicular to the end plate, and the part of the heat dissipation seat, which is close to the first end plate, the first limiting plates and the two second limiting plates are matched to tightly abut against two sides of the fan.

5. The fan fixing structure as claimed in claim 2, wherein each of the end plates is formed with at least one reinforcing rib on a side facing the mounting chamber, the reinforcing rib being for abutting against an end portion of the fan.

6. The fan fixing structure as claimed in claim 5, wherein the number of the snap fasteners is plural, and the plurality of snap fasteners are arranged at the bottom of the heat sink base at intervals.

7. The fan fixing structure as claimed in claim 2, wherein the heat dissipation base includes a second bottom plate, a side plate and at least one mounting cylinder, the side plate is fixedly connected to one end of the first bottom plate away from the fixing base, a plurality of through holes arranged at intervals are formed in the second bottom plate, the through holes extend along a direction away from the second bottom plate to form a plurality of mounting cylinders, the mounting cylinders are used for fixing the heat generating devices, the heat generating devices include capacitors, and the capacitors are in one-to-one correspondence with the mounting cylinders.

8. The fan fixing structure as claimed in any one of claims 1 to 7, wherein the heat sink and the fixing base are provided in an L shape.

9. A driver, the driver comprising: a housing, a fan, a die cast and a fan fixing structure as claimed in any one of claims 1 to 8.

10. The driver of claim 9, wherein the die cast includes a base and a heat dissipating fin, the snap-fit with the base, the heat dissipating fin disposed in the heat dissipating air duct, the fan configured to blow air to the heat dissipating air duct to dissipate heat from the heat dissipating fin and the heat generating device disposed in the heat dissipating air duct.