Computer mainboard cooling fan

Abstract

The utility model discloses a computer mainboard cooling fan which comprises a cooling fan outer frame and a fixing unit. An inner stator coil is arranged in the middle of the bottom wall of the cooling fan outer frame, an output shaft is rotationally connected to the middle of the inner stator coil, a connecting shell is arranged at the upper end of the output shaft, a rotor magnetic ring is arranged on the inner arc wall of the connecting shell, the inner stator coil is located in the rotor magnetic ring, and fan blades are movably inserted into the outer portion of the connecting shell. The input end of the inner stator coil is electrically connected with the output end of an external control switch; the fixing unit is arranged at the upper ends of the fan blades, the lower end of the fixing unit is in threaded connection with the connecting shell, the fixing unit comprises a stud and a hand wheel shell, and the stud is in threaded connection with the upper end of the connecting shell. The computer mainboard heat dissipation device has a good heat dissipation effect on a computer mainboard, and is high in operation comfort and good in self-locking performance.

Description

Technical Field

[0001] The utility model relates to the technical field of computer accessories, in particular to a computer mainboard cooling fan. Background Art

[0002] With the development of society and the progress of science, the application scope of computers is very wide. The interior of a computer cannot be separated from the use of a motherboard. The motherboard is the "skeleton" of the computer, responsible for connecting various components and providing a channel for data transmission. In order to ensure the performance of the computer motherboard, a cooling fan is used to dissipate the heat. Existing cooling fans are generally composed of a motor, fan blades, and a base. The stator coil of the motor is generally set inside the base, and its rotor and magnetic ring are set inside the fan blades and generally cannot be disassembled, saving the production cost of the cooling fan. However, during use, dust will gather on the surface of the fan blades. Since the fan blades cannot be disassembled and are curved, the fan blades are less convenient to clean, and the attached dust easily affects the heat dissipation efficiency of the computer motherboard. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a computer motherboard cooling fan. The fan blades are detachable and easy to clean, which greatly improves the convenience of cleaning the cooling fan, has a good heat dissipation effect on the computer motherboard, is highly comfortable to operate and has good self-locking properties, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a computer motherboard cooling fan, comprising a cooling fan outer frame and a fixing unit;

[0005] The outer frame of the heat dissipation fan: an inner stator coil is arranged in the middle of the bottom wall, the middle of the inner stator coil is rotatably connected with an output shaft, a connecting shell is arranged at the upper end of the output shaft, a rotor magnetic ring is arranged on the inner arc wall of the connecting shell, the inner stator coil is located inside the rotor magnetic ring, a fan blade is movably inserted outside the connecting shell, and the input end of the inner stator coil is electrically connected to the output end of the external control switch;

[0006] Fixed unit: It is set at the upper end of the fan blades, and the lower end of the fixed unit is threadedly connected to the connecting shell. During use, the handwheel shell can be rotated to loosen the fan blades, and then the fan blades can be removed upwards for cleaning, which greatly improves the convenience of cleaning the cooling fan and has a good heat dissipation effect on the computer motherboard. At the same time, the handwheel shell has a conical groove on the outside and a conical rubber sleeve on the inside, which is highly comfortable to operate and has good self-locking properties.

[0007] Furthermore, the fixing unit includes a stud and a handwheel shell, the stud is threadedly connected to the upper end of the connecting shell, the upper end of the stud passes through the upper surface of the fan blade and is provided with a handwheel shell at the end to facilitate the positioning of the fan blade.

[0008] Furthermore, the fixing unit also includes a retaining ring and a positioning seat. The retaining ring is arranged at the lower end of the outer arc surface of the stud, and the positioning seat is arranged in the middle of the upper surface of the fan blade. The retaining ring is located below the positioning seat. The retaining ring is rotatably connected to the through hole in the middle of the upper surface of the fan blade, so as to facilitate the synchronous upward movement of the stud and the fan blade.

[0009] Furthermore, the outer arc surface of the handwheel housing is a conical surface, and the diameter of the lower end of the outer arc surface of the handwheel housing is smaller than the diameter of the upper end, which facilitates the upward pulling of the handwheel housing.

[0010] Furthermore, evenly distributed grooves are provided on the upper end of the outer arc surface of the handwheel housing to facilitate the rotation of the handwheel housing.

[0011] Furthermore, a conical rubber sleeve is provided inside the handwheel housing, and the conical rubber sleeve is rotatably connected to the outer conical surface of the positioning seat to increase the rotational resistance of the handwheel housing.

[0012] Furthermore, the upper surface of the connecting shell is provided with evenly distributed positioning pieces, and the positioning pieces are movably plugged into the circular holes in the middle of the fan blades, so as to facilitate the positioning of the fan blades and the connecting shell.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the computer motherboard cooling fan has the following advantages:

[0014] After using the fan blades for a period of time, dust adheres to the surface of the fan blades, and the fan blades can be disassembled. During disassembly and assembly, limit the rotation of the fan blades, and then rotate the handwheel shell. The handwheel shell drives the stud to rotate, and the stud moves up and drives the fan blades to move up through the retaining ring and the positioning seat. The fan blades are separated from the positioning pieces, and the studs and the connecting shell are pulled upward to separate the fan blades from the connecting shell. The fan blades can then be directly rinsed and cleaned. After cleaning, the fan blades can be reset and installed. During use, the handwheel shell can be rotated to loosen the fan blades, and then the fan blades can be removed upwards for cleaning, which greatly improves the convenience of cleaning the cooling fan and has a good heat dissipation effect on the computer motherboard. At the same time, the handwheel shell has a conical groove on the outside and a conical rubber sleeve on the inside, which is comfortable to operate and has good self-locking properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a cross-sectional structural schematic diagram of the fixing unit of the utility model;

[0017] Figure 3 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0018] In the figure: 1 cooling fan outer frame, 2 inner stator coil, 3 output shaft, 4 connecting shell, 5 rotor magnetic ring, 6 fan blade, 7 fixing unit, 71 stud, 72 handwheel shell, 73 retaining ring, 74 positioning seat, 8 groove, 9 positioning sheet, 10 conical rubber sleeve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 ,This embodiment provides a technical solution: a computer motherboard cooling fan, including a cooling fan outer frame 1 and a fixing unit 7;

[0021] The outer frame 1 of the heat dissipation fan: the middle part of the bottom wall thereof is provided with an inner stator coil 2, the outer frame 1 of the heat dissipation fan is fixed to the computer motherboard, the middle part of the inner stator coil 2 is rotatably connected with an output shaft 3, the upper end of the output shaft 3 is provided with a connecting shell 4, the inner arc wall of the connecting shell 4 is provided with a rotor magnetic ring 5, the inner stator coil 2 is located inside the rotor magnetic ring 5, the outside of the connecting shell 4 is movably plugged with a fan blade 6, the input end of the inner stator coil 2 is electrically connected to the output end of the external control switch, when working, the external control switch supplies power to the inner stator coil 2, the inner stator coil 2 generates an electromagnetic field, drives the rotor magnetic ring 5, the connecting shell 4 and the output shaft 3 to rotate, the connecting shell 4 drives the fan blade 6 to rotate, continuously pushes the air to promote the flow to dissipate heat for the computer motherboard, the upper surface of the connecting shell 4 is provided with evenly distributed positioning pieces 9, the positioning pieces 9 are all movably plugged with the circular holes in the middle of the fan blade 6, and the positioning pieces 9 ensure the accuracy of positioning the fan blade 6 and the connecting shell 4;

[0022] Fixed unit 7: arranged at the upper end of the fan blade 6, the lower end of the fixed unit 7 is threadedly connected to the connecting shell 4, the fixed unit 7 includes a stud 71 and a handwheel shell 72, the stud 71 is threadedly connected to the upper end of the connecting shell 4, the upper end of the stud 71 passes through the upper surface of the fan blade 6 and is provided with a handwheel shell 72 at the end, the fixed unit 7 also includes a retaining ring 73 and a positioning seat 74, the retaining ring 73 is arranged at the lower end of the outer arc surface of the stud 71, the positioning seat 74 is arranged in the middle of the upper surface of the fan blade 6, the retaining ring 73 is located below the positioning seat 74, the retaining ring 73 is rotatably connected to the through hole in the middle of the upper surface of the fan blade 6, restricting the rotation of the fan blade 6, and then rotating the handwheel shell 72, the handwheel The shell 72 drives the stud 71 to rotate, the stud 71 moves up and drives the fan blade 6 to move up through the retaining ring 73 and the positioning seat 74. The outer arc surface of the handwheel shell 72 is a conical surface. The diameter of the lower end of the outer arc surface of the handwheel shell 72 is smaller than the diameter of the upper end. The stud 71 is connected to the shell 4 and then pulled upward to separate the fan blade 6 from the connecting shell 4. The conical surface is convenient for pulling. The upper end of the outer arc surface of the handwheel shell 72 is provided with evenly distributed grooves 8, which is convenient for controlling the rotation of the handwheel shell 72. The interior of the handwheel shell 72 is provided with a conical rubber sleeve 10, which is rotatably connected to the outer conical surface of the positioning seat 74 to increase the resistance of the handwheel shell 72 during rotation and avoid loosening of the stud 71.

[0023] The working principle of a computer motherboard cooling fan provided by the utility model is as follows: a cooling fan outer frame 1 is fixed to the computer motherboard, and when working, an external control switch supplies power to the inner stator coil 2, and the inner stator coil 2 generates an electromagnetic field, driving the rotor magnetic ring 5, the connecting shell 4 and the output shaft 3 to rotate, and the connecting shell 4 drives the fan blades 6 to rotate, and continuously pushes the air to promote the flow to dissipate heat from the computer motherboard. After using for a period of time, dust adheres to the surface of the fan blades 6, and the fan blades 6 can be disassembled. During disassembly and assembly, the rotation of the fan blades 6 is restricted, and then the handwheel shell 72 is rotated, and the handwheel shell 72 drives the stud 71 to rotate, and the stud 71 moves up and drives the fan blades 6 to move up through the retaining ring 73 and the positioning seat 74, and the fan blades 6 are separated from the positioning pieces 9, and the stud 71 is pulled upward after the connecting shell 4 to separate the fan blades 6 from the connecting shell 4, and then the fan blades 6 can be directly rinsed and cleaned. After cleaning, the fan blades 6 can be reset and installed.

[0024] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A computer motherboard cooling fan, characterized in that: It comprises a heat dissipation fan outer frame (1) and a fixing unit (7); The outer frame (1) of the heat dissipation fan has an inner stator coil (2) arranged in the middle of the bottom wall thereof, the middle of the inner stator coil (2) is rotatably connected to an output shaft (3), a connecting shell (4) is arranged at the upper end of the output shaft (3), a rotor magnetic ring (5) is arranged on the inner arc wall of the connecting shell (4), the inner stator coil (2) is located inside the rotor magnetic ring (5), a fan blade (6) is movably inserted outside the connecting shell (4), and the input end of the inner stator coil (2) is electrically connected to the output end of an external control switch; A fixing unit (7) is arranged at the upper end of the fan blade (6), and the lower end of the fixing unit (7) is threadedly connected to the connecting shell (4).

2. A computer motherboard cooling fan according to claim 1, characterized in that: The fixing unit (7) comprises a stud (71) and a handwheel housing (72); the stud (71) is threadedly connected to the upper end of the connecting housing (4); the upper end of the stud (71) passes through the upper surface of the fan blade (6) and is provided with a handwheel housing (72) at the end.

3. A computer motherboard cooling fan according to claim 2, characterized in that: The fixing unit (7) further comprises a retaining ring (73) and a positioning seat (74), wherein the retaining ring (73) is arranged at the lower end of the outer arc surface of the stud (71), and the positioning seat (74) is arranged at the middle part of the upper surface of the fan blade (6), the retaining ring (73) is located below the positioning seat (74), and the retaining ring (73) is rotatably connected to the through hole in the middle part of the upper surface of the fan blade (6).

4. A computer motherboard cooling fan according to claim 2, characterized in that: The outer arc surface of the hand wheel housing (72) is a conical surface, and the diameter of the lower end of the outer arc surface of the hand wheel housing (72) is smaller than the diameter of the upper end.

5. A computer motherboard cooling fan according to claim 2, characterized in that: The upper end of the outer arc surface of the hand wheel housing (72) is provided with evenly distributed grooves (8).

6. A computer motherboard cooling fan according to claim 3, characterized in that: A conical rubber sleeve (10) is provided inside the hand wheel housing (72), and the conical rubber sleeve (10) is rotatably connected to the outer conical surface of the positioning seat (74).

7. A computer motherboard cooling fan according to claim 1, characterized in that: The upper surface of the connecting shell (4) is provided with evenly distributed positioning pieces (9), and the positioning pieces (9) are all movably plugged into the circular holes in the middle of the fan blades (6).

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