Fan module and electronic equipment

Abstract

The utility model discloses a fan module and electronic equipment, and relates to the technical field of fan modules of electronic equipment, the fan module is applied to the electronic equipment, the fan module comprises a fan main body, an electric control board and a vibration reduction assembly, the electric control board is electrically connected with the fan main body, and the vibration reduction assembly is electrically connected with the fan main body. The electric control board is also used for being electrically connected with a mainboard in the electronic equipment; the damping assembly comprises a base, a positioning piece and an elastic piece, the fan body is arranged on the base, the positioning piece is arranged on the base, the electric control board is arranged on the positioning piece, a movable gap is formed between the electric control board and the positioning piece, and the elastic piece is arranged between the base and the electric control board; according to the technical scheme provided by the utility model, the elastic piece can counteract most vibration force by virtue of the elasticity of the elastic piece, so that the electric control board is kept stable, and the vibration influence on the main board of the electronic equipment and the electronic equipment caused by the electric control board serving as a medium is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fan modules of electronic equipment, in particular to a fan module and an electronic equipment. Background Art

[0002] Currently, industries such as the Internet, cloud computing, and artificial intelligence have entered a stage of rapid development, requiring the use of a large number of network electronic devices. The requirements for modularization of modules in network electronic devices are becoming increasingly higher, and the fan modules located in electronic devices also have this demand. However, the motherboards in electronic devices are often affected by the high-speed rotation of the fan modules during normal operation. The high-speed rotation of the fan modules generates high-frequency vibrations, which in turn affect the storage, reading, and operation of the motherboard.

[0003] Although the prior art provides a fan integrated design solution, there is no effective means to reduce the impact of the high-speed rotation of the fan module on the motherboard and electronic equipment in the electronic device, and the reduction effect is not ideal. Utility Model Content

[0004] The main purpose of the present invention is to provide a fan module and an electronic device, aiming to reduce the impact of the fan module on the mainboard and the electronic device when the fan module is in operation.

[0005] To achieve the above objectives, the present invention provides a fan module for electronic equipment, comprising:

[0006] Fan body;

[0007] an electric control board, the electric control board being electrically connected to the fan body and also being used to be electrically connected to a main board in the electronic device;

[0008] The vibration reduction assembly includes a base, a positioning member and an elastic member, the fan body is arranged on the base, the positioning member is arranged on the base, the electric control board is arranged on the positioning member, and there is a movable gap between the electric control board and the positioning member. The elastic member is arranged between the base and the electric control board, and the two ends of the elastic member are respectively in contact with the base and the electric control board.

[0009] In one embodiment, the positioning member partially passes through the electric control board, and the elastic member is sleeved on the outer periphery of the positioning member and is located between the base and the electric control board.

[0010] In one embodiment, the positioning member includes a positioning column and a limiting screw. The limiting screw is located at one end of the positioning column passing through the electric control board. The diameter of the limiting screw is larger than the diameter of the positioning column to achieve limiting abutment on the electric control board.

[0011] In one embodiment, the positioning column includes a first positioning section and a second positioning section, the second positioning section is located above the first positioning section, and the diameter of the first positioning section is larger than the diameter of the second positioning section;

[0012] The electric control board is provided with a through hole for the second positioning section to pass through. The diameter of the second positioning section is smaller than the diameter of the through hole, and the diameter of the through hole is smaller than the diameter of the first positioning section, so that the electric control board has a movable gap along the circumference of the positioning column.

[0013] In one embodiment, the depth of the through hole is smaller than the height of the second positioning section, so that the electric control board has a movable gap along the extension direction of the positioning column.

[0014] In one embodiment, the fan module further includes a first connector, which is provided on a side of the electronic control board away from the fan body, and is used to electrically connect to a mainboard in the electronic device;

[0015] The positioning member includes a positioning column and a limiting stud. The limiting stud is located at one end of the positioning column passing through the base. The diameter of the limiting stud is larger than the diameter of the positioning column so as to achieve limiting abutment with the electric control board. An abutment portion is provided at one end of the limiting stud away from the electric control board, and the abutment portion is used to abut with the first connector.

[0016] In one embodiment, the abutment portion includes a connecting plate and a pressure plate, the connecting plate is provided at one end of the limiting stud away from the positioning column, the pressure plate is located on the side of the connecting plate away from the fan body and faces the first connector, and the pressure plate abuts against the first connector.

[0017] In one embodiment, the pressing plate and the connecting plate are detachably connected, and the pressing plate and the connecting plate are combined to form a square frame.

[0018] The present invention further provides an electronic device, comprising:

[0019] case;

[0020] a mainboard, disposed in the housing; and

[0021] As described in the above embodiment, the fan module is arranged in the housing to dissipate heat from the mainboard.

[0022] In one embodiment, a second connector is provided on the mainboard, and the second connector is plugged into the first connector of the fan module.

[0023] In the technical solution of the present invention, the positioning member is connected to the base, the electric control board is positioned and connected to the positioning member, and there is a movable gap between the electric control board and the positioning member. An elastic member is also provided between the electric control board and the base. Therefore, when the fan body operates to generate high-frequency vibration, the vibration force is transmitted through the base and the positioning member. Since there is a movable gap between the electric control board and the positioning member, and the electric control board is arranged on the base via the elastic member, when the vibration force is transmitted to the electric control board through the base, the elastic member can rely on its own elasticity to offset most of the vibration force, so that the electric control board remains stable, and can also reduce the vibration impact of the electric control board as a medium on the main board of the electronic device and the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 This is a structural diagram of an embodiment of a fan module provided by the present invention;

[0026] Figure 2 A schematic structural diagram of the fan module provided by the present invention;

[0027] Figure 3 for Figure 1 Schematic diagram of the explosion structure of the fan module;

[0028] Figure 4 A schematic structural diagram of an embodiment of an electronic device provided by the present utility model;

[0029] Figure 5 for Figure 4 A schematic diagram of the structure of the electronic device housing with the top cover removed;

[0030] Figure 6 for Figure 5 Schematic diagram of the structure connecting the fan module and the mainboard in the middle shell.

[0031] Description of Figure Numbers:

[0032] 10. Fan module; 11. Fan body; 12. Electronic control board; 13. Vibration reduction assembly; 131. Base; 132. Positioning member; 1321. Positioning column; 13211. First positioning section; 13212. Second positioning section; 1322. Limiting stud; 133. Elastic member; 134. Abutment portion; 1341. Connecting plate; 1342. Pressing plate; 14. First connector;

[0033] 20. Electronic device; 21. Housing; 22. Mainboard; 23. Second connector.

[0034] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

[0036] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] During normal operation, the motherboard in existing electronic devices is often affected by the vibration generated by the high-speed rotation of the fan module used for heat dissipation. The high-speed rotation of the fan module will generate high-frequency vibrations, which will affect the storage, reading and operation of the motherboard. Since the existing fan module is also provided with an electronic control board, and the electronic control board is electrically connected to the motherboard, in order to reduce the impact of the high-frequency vibration generated by the fan module during operation on the electronic control board, and also to reduce the further vibration impact of the electronic control board as a conductive medium on the motherboard in the electronic device after being affected by the vibration, in this technical solution, a vibration reduction component is installed between the fan body and the electronic control board to change the conventional rigid constraints of the fan body and the electronic control board into non-rigid constraints.

[0039] The present invention provides a fan module 10 .

[0040] See also Figures 1 to 3 In one embodiment of the present utility model, the fan module 10 is applied to an electronic device 20, and the fan module 10 includes a fan body 11, an electric control board 12 and a vibration reduction assembly 13, wherein the electric control board 12 is electrically connected to the fan body 11, and the electric control board 12 is also used to be electrically connected to the main board 22 in the electronic device 20; the vibration reduction assembly 13 includes a base 131, a positioning member 132 and an elastic member 133, the fan body 11 is arranged on the base 131, the positioning member 132 is arranged on the base 131, the electric control board 12 is arranged on the positioning member 132, and there is a movable gap between the electric control board 12 and the positioning member 132, the elastic member 133 is arranged between the base 131 and the electric control board 12, and the two ends of the elastic member 133 are respectively in contact with the base 131 and the electric control board 12.

[0041] In the technical solution of the present invention, the fan module 10 includes a fan body 11, an electric control board 12 and a vibration reduction assembly 13, wherein the fan body 11 is mainly used to accelerate the flow of gas, the electric control board 12 is mainly used to realize the operation control of the fan body 11, and the vibration reduction assembly 13 is used to offset the vibration force when the fan body 11 is running and generates vibration, so as to prevent the high-frequency vibration force generated by the fan body 11 from affecting the electric control box and the electronic device 20 mainboard 22 electrically connected to the electric control box. In this embodiment, the vibration reduction assembly 13 includes a base 1 31, positioning member 132 and elastic member 133, wherein the fan body 11 can be set on the base 131, or can be directly set on the electronic device 20. For the convenience of explanation, the fan body 11 is set on the electronic device 20 as an example, and the base 131 is detachably arranged on one side of the fan body 11, the positioning member 132 is set on the base 131, and the electric control board 12 is set on the positioning member 132. The electric control board 12 and the positioning member 132 are reserved with a movable gap along the extension direction of the positioning member 132 and along the circumference of the positioning member 132. The elastic member 133 is provided with a plurality of movable gaps. 33 is provided between the base 131 and the electric control board 12, and the two ends of the elastic member 133 are respectively abutted against the end surfaces of the base 131 and the electric control board 12, so that there is a deformation space between the base 131 and the electric control board 12 along the extension direction of the positioning member 132. In this embodiment, the base 131 is detachably connected to the fan body 11, and the positioning member 132 is connected to the base 131, and the electric control board 12 is positioned and connected to the positioning member 132, and there is a movable gap between the electric control board 12 and the base 131. 133, so when the fan body 11 runs and generates high-frequency vibration, the vibration force is transmitted through the base 131 and the positioning member 132. Since there is a movable gap between the electronic control board 12 and the positioning member 132, and the electronic control board 12 is arranged on the base 131 via the elastic member 133, when the vibration force is transmitted to the electronic control board 12 through the base 131, the elastic member 133 can rely on its own elasticity to offset most of the vibration force, so as to keep the electronic control board 12 stable, and can also reduce the vibration impact of the electronic control board 12 as a medium on the main board 22 of the electronic device 20 and the electronic device 20.

[0042] The elastic member 133 may be a metal spring or a non-metal spring, such as a coil spring or a rubber spring, and no further limitation is imposed on this.

[0043] In one embodiment, if Figure 3As shown, the positioning member 132 partially penetrates the electric control board 12, and the elastic member 133 is sleeved around the outer periphery of the positioning member 132 and is located between the base 131 and the electric control board 12. In this embodiment, the positioning member 132 partially penetrates the base 131 and the electric control board 12 in sequence, while the elastic member 133 is sleeved around the outer periphery of the positioning member 132 and is located between the electric control board 12 and the base 131. In other embodiments, the positioning member 132 may be positioned and connected only to the outer edge of the electric control board 12, and the elastic member 133 may be located anywhere between the base 131 and the electric control board 12, without further limitation.

[0044] In one embodiment, if Figures 1 to 3 As shown, the positioning member 132 includes a positioning column 1321 and a limiting stud 1322. The limiting stud 1322 is located at the end of the positioning column 1321 that passes through the electric control board 12. The diameter of the limiting stud 1322 is larger than the diameter of the positioning column 1321, so as to achieve limiting contact with the electric control board 12. In order to enable the electric control board 12 to be more stably arranged on the positioning member 132, in this embodiment, the positioning member 132 includes a positioning column 1321 and a limiting stud 1322. The positioning column 1321 part passes through the base 131 and the electric control board 12 in sequence, while the limiting stud 1322 is located at the end of the positioning column 1321 that passes through the base 131. The diameter of the limiting stud 1322 is larger than the positioning column 1321 and the opening on the electric control board 12 for the positioning column 1321 to pass through. The diameter of the through hole is designed. Since the diameter of the limiting stud 1322 is larger than the diameter of the through hole on the positioning column 1321 and the electronic control board 12, the limiting stud 1322 can limit the electronic control board 12, preventing the elastic member 133 from pushing the electronic control board 12 to move back and forth along the extension direction of the positioning column 1321 when offsetting the external vibration force through deformation. Through such a setting, the elastic member 133 can cooperate with the limiting stud 1322 to achieve a better anti-vibration effect on the electronic control board 12.

[0045] Regarding the specific setting of the positioning column 1321, the positioning column 1321 can be a structure integrally formed with the base 131, or it can be a separately set rivet column, that is, a columnar structure that can be detachably installed with the base 131. Assuming that the positioning column 1321 is a separately set rivet column, it is necessary to open a hole on the base 131, and one end of the rivet column passes through the opening of the base 131, and the part of the rivet column that passes through the base 131 is used to connect with the electronic control board 12. In another embodiment, a limiting structure is provided at the end of the rivet column, and the part of the rivet column with the limiting structure passes through the opening on the base 131 and is connected to the electronic control board 12. There are no excessive restrictions on the specific setting of the positioning column 1321.

[0046] In one embodiment, if Figure 3As shown, the positioning column 1321 includes a first positioning section 13211 and a second positioning section 13212, the second positioning section 13212 is located above the first positioning section 13211, and the diameter of the first positioning section 13211 is larger than the diameter of the second positioning section 13212; the electric control board 12 is provided with a through hole for the second positioning section 13212 to pass through, the diameter of the second positioning section 13212 is smaller than the diameter of the through hole, and the diameter of the through hole is smaller than the diameter of the first positioning section 13211, so that the electric control board 12 has a movable gap along the circumference of the positioning column 1321. In order to enable the positioning member 132 to achieve a better positioning effect on the electric control board 12, in this embodiment, the positioning column 1321 includes a first positioning section 13211 and a second positioning section 13212. The first positioning section 13211 and the second positioning section 13212 can be set as an integral whole or can be constructed in a disassembly form. The second positioning section 13212 is located above the first positioning section 13211. The diameter of the first positioning section 13211 is larger than the diameter of the second positioning section 13212. In this embodiment, the electric control board 12 is positioned and connected to the positioning column 1321 in the manner of the above embodiment. Therefore, a through hole is opened on the electric control board 12. The through hole is used for the second positioning section 13212 to pass through. In this embodiment, the diameter of the through hole is larger than the diameter of the second positioning section 13212, but smaller than the diameter of the first positioning section 13211. That is to say, the positioning column 1321 at this time forms a step shape, and the electric control board 12 is sleeved on the outer periphery of the second positioning section 13212 and is located on the first positioning section 13211. Since the through hole diameter of the electric control board 12 is larger than the diameter of the second positioning section 13212, the electric control board 12 has a movable gap in the circumferential direction of the second positioning section 13212, so that the electric control board 12 can have a certain degree of freedom along the circumferential direction of the second positioning section 13212.

[0047] Specifically, the electric control board 12 is provided with a through hole for the second positioning section 13212 to pass through, and the depth of the through hole is smaller than the height of the second positioning section 13212 , so that the electric control board 12 has a movable gap along the extension direction of the positioning column 1321 . In order to ensure that the electric control board 12 has the same degree of freedom as described in the above embodiment along the extension direction of the positioning column 1321, in this embodiment, the height of the second positioning section 13212 is set to be greater than the depth of the through hole opened on the electric control board 12 for installing the second positioning section 13212. Through such a setting, the electric control board 12 has a certain movable gap along the extension direction of the positioning column 1321, which can cooperate with the elastic member 133 to offset the vibration force. Moreover, through such a setting, the electric control board 12 is positioned by the elastic member 133 and the limiting stud 1322 along the extension direction of the positioning column 1321 at the same time, and has a positioning effect along the circumferential direction of the positioning column 1321 through the second positioning section 13212. Moreover, because a certain movable space is retained in the above three directions, the conventional rigid constraint is changed to a non-rigid constraint, thereby achieving a better effect of offsetting the vibration force.

[0048] In one embodiment, if Figures 1 to 3 As shown, the fan module 10 also includes a first connector 14, which is arranged on the side of the electric control board 12 away from the fan body 11, and the first connector 14 is used to electrically connect with the main board 22 in the electronic device 20; the positioning member 132 includes a positioning column 1321 and a limiting stud 1322, and the limiting stud 1322 is located at one end of the positioning column 1321 passing through the base 131, and the diameter of the limiting stud 1322 is larger than the diameter of the positioning column 1321, so as to achieve limiting abutment with the electric control board 12, and the end of the limiting stud 1322 away from the electric control board 12 is provided with an abutment portion 134, and the abutment portion 134 is used to abut with the first connector 14. In order to prevent the first connector 14 from deforming upward and ensure the force strength of the connector, in the present embodiment, a first connector 14 is provided on the side of the electric control board 12 away from the fan body 11. The first connector 14 is mainly used to electrically connect with the main board 22 in the electronic device 20. In the present embodiment, a limiting stud 1322 is provided, and an abutment portion 134 is provided at the end of the limiting stud 1322 away from the electric control board 12. The abutment portion 134 can be integrally provided with the limiting stud 1322, or can be formed by a detachable connection later. There are no excessive restrictions on this. The abutment portion 134 can abut the end of the first connector 14 away from the electric control board 12 to prevent the first connector 14 from deforming upward and ensure the force strength of the first connector 14.

[0049] Specifically, the abutment portion 134 includes a connecting plate 1341 and a pressure plate 1342. The connecting plate 1341 is arranged at one end of the limiting screw 1322 away from the positioning column 1321, and the pressure plate 1342 is located on the side of the connecting plate 1341 away from the fan body 11 and facing the first connector 14. The pressure plate 1342 abuts against the first connector 14. In this embodiment, the abutment portion 134 is connected to the limiting stud 1322 in a detachable manner, wherein the abutment portion 134 includes a connecting plate 1341 and a pressure plate 1342, the connecting plate 1341 is detachably arranged at the end of the limiting stud 1322 away from the positioning column 1321, and the pressure plate 1342 is detachably arranged on the end face of the connecting plate 1341 facing the electric control board 12 and away from the fan body 11, and the pressure plate 1342 is arranged corresponding to the first connector 14, and the pressure plate 1342 protrudes from the connecting plate 1341 and abuts against the end face of the first connector 14 away from the electric control board 12.

[0050] More specifically, Figure 3 As shown, the pressing plate 1342 is detachably connected to the connecting plate 1341, and the pressing plate 1342 and the connecting plate 1341 together form a square frame. In this embodiment, the pressing plate 1342 and the connecting plate 1341 are detachably connected, and since the first connector 14 includes multiple connecting terminals, in order to enable the pressing plate 1342 to abut against the multiple connecting terminals without causing gravity squeezing of the multiple connecting terminals, in this embodiment, the pressing plate 1342 is arranged in a strip shape, and after the pressing plate 1342 and the connecting plate 1341 are connected, they form a square frame. This arrangement of the pressing plate 1342 not only allows the pressing plate 1342 to abut against the multiple connecting terminals, but also reduces the manufacturing materials required for the pressing plate 1342 while ensuring structural strength.

[0051] Regarding the specific setting of the limiting stud 134, as shown in FIG. Figure 3As shown, in this embodiment, the limiting stud 134 includes a first section and a second section, wherein the first section is closer to the electric control board 12 during installation, and the second section is away from the electric control board 12, and the diameter of the first section is smaller than the diameter of the second section. In this embodiment, the outer periphery of the first section is provided with a threaded structure, and the second positioning section 13212 of the positioning column 1321 is provided with a threaded groove for screwing the first section. Therefore, in this embodiment, the limiting stud 134 can be threadedly connected through the threaded groove provided on the first section and the second positioning section 13212 of the positioning column 1321. In this embodiment, the diameter of the second section is larger than the diameter of the second positioning section 13212, and larger than the diameter of the electric control board 12. The diameter of the through hole for installing the positioning column 132 on the control board 12; in other embodiments (not shown in the figure), the limiting stud 134 is provided with a threaded groove on the end face of the second positioning section 13212 of the positioning column 1321 when installed, and the outer periphery of the second positioning section 13212 of the positioning column 1321 is provided with a threaded structure. The diameter of the limiting stud 134 is larger than the diameter of the second positioning section 13212, and larger than the diameter of the through hole for installing the positioning column 132 on the electronic control board 12. In this embodiment, the limiting stud 134 is still threadedly connected to the second positioning section 13212 of the positioning column 1321, and no excessive restrictions are placed on the specific setting of the limiting stud 134.

[0052] The present invention also provides an electronic device 20, such as Figures 4 to 6 As shown, the electronic device 20 includes a housing 21, a mainboard 22, and a fan module 10. The specific structure of the fan module 10 is similar to that of the above-mentioned embodiments. Since the electronic device 20 adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, and will not be described in detail here. The mainboard 22 is disposed in the housing 21; and the fan module 10 is disposed in the housing 21 to dissipate heat from the mainboard 22.

[0053] In one embodiment, if Figure 6 As shown, the mainboard 22 is provided with a second connector 23, which is plugged into the first connector 14 of the fan module 10. In this embodiment, the first connector 14 of the fan module 10 is plugged into the second connector 23 on the mainboard 22, and the first connector 14 and the second connector 23 are electrically connected, so that the electronic control board 12 in the fan module 10 can be electrically connected to the mainboard 22 in the electronic device 20.

[0054] Regarding the electronic device 20 , the electronic device 20 may be a data center, an electronic device, a switch, or other equipment, and no further limitation is given to this.

[0055] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A fan module, applied to electronic equipment, characterized in that: include: Fan body; an electric control board, the electric control board being electrically connected to the fan body and also being used to be electrically connected to a main board in the electronic device; The vibration reduction assembly includes a base, a positioning member and an elastic member, the fan body is arranged on the base, the positioning member is arranged on the base, the electric control board is arranged on the positioning member, and there is a movable gap between the electric control board and the positioning member. The elastic member is arranged between the base and the electric control board, and the two ends of the elastic member are respectively in contact with the base and the electric control board.

2. The fan module according to claim 1, wherein: The positioning member partially passes through the electric control board, and the elastic member is sleeved on the outer periphery of the positioning member and is located between the base and the electric control board.

3. The fan module according to claim 2, wherein: The positioning member includes a positioning column and a limiting screw. The limiting screw is located at one end of the positioning column passing through the electric control board. The diameter of the limiting screw is larger than the diameter of the positioning column to achieve limiting abutment on the electric control board.

4. The fan module according to claim 3, wherein: The positioning column includes a first positioning section and a second positioning section, the second positioning section is located above the first positioning section, and the diameter of the first positioning section is larger than the diameter of the second positioning section; The electric control board is provided with a through hole for the second positioning section to pass through. The diameter of the second positioning section is smaller than the diameter of the through hole, and the diameter of the through hole is smaller than the diameter of the first positioning section, so that the electric control board has a movable gap along the circumference of the positioning column.

5. The fan module according to claim 4, wherein: The depth of the through hole is smaller than the height of the second positioning section, so that the electric control board has a movable gap along the extending direction of the positioning column.

6. The fan module according to claim 1, wherein: The fan module further includes a first connector, which is provided on a side of the electric control board away from the fan body, and is used to electrically connect to a mainboard in the electronic device; The positioning member includes a positioning column and a limiting stud. The limiting stud is located at one end of the positioning column passing through the base. The diameter of the limiting stud is larger than the diameter of the positioning column so as to achieve limiting abutment with the electric control board. An abutment portion is provided at one end of the limiting stud away from the electric control board, and the abutment portion is used to abut with the first connector.

7. The fan module according to claim 6, wherein: The abutting portion includes a connecting plate and a pressure plate. The connecting plate is provided at one end of the limiting stud away from the positioning column. The pressure plate is located on a side of the connecting plate away from the fan body and faces the first connector. The pressure plate abuts against the first connector.

8. The fan module according to claim 7, wherein: The pressing plate is detachably connected to the connecting plate, and the pressing plate and the connecting plate are combined to form a square frame.

9. An electronic device, characterized in that: include: case; a mainboard, disposed in the housing; as well as The fan module according to any one of claims 1 to 8, wherein the fan module is arranged in the housing to dissipate heat from the motherboard.

10. The electronic device according to claim 9, wherein The mainboard is provided with a second connector, and the second connector is plugged into the first connector of the fan module.

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