Computer fan with external drive structure

Abstract

The utility model discloses a computer fan with an external drive structure, which comprises a frame body and an impeller, a pivoting cavity is arranged in the middle of the frame body, an accommodating cavity is arranged in the frame body, a stator is arranged in the accommodating cavity, the impeller is pivotally arranged in the pivoting cavity, and the stator is arranged in the accommodating cavity. The impeller comprises blades extending from the axis to the pivoting cavity and a circular ring frame arranged at the ends of the outer sides of the blades. The circular ring frame is provided with a rotor matched with the stator. The stator is used for driving the impeller to rotate. In the actual design, a traditional middle stator and a traditional middle rotor are changed, the stator and the rotor are arranged on the frame body and the annular frame of the impeller respectively, then rotation of the impeller is achieved, the torque of the improved computer fan is larger, the rotation upper limit of the improved computer fan is higher, meanwhile, the driving area is larger, heat dissipation of the motor is better, and the service life of the motor is prolonged. And the service life of the computer fan can be effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of computer fans, and in particular to a computer fan with an external drive structure. Background Technology

[0002] Computer fans, also known as cooling fans, are generally used for heat dissipation. They are supplied to heat sinks and computer cases. With the development of modular fans, the current design trend is to achieve mutual cooperation between multiple fans through interlocking structures, which can meet the needs of DIY designers.

[0003] Existing computer fan designs typically include a drive motor and blades located at the drive end of the drive motor, which enable the blades to rotate. However, fans with a central shaft structure have the following problems: their upper limit of rotation speed is relatively low, so the center of gravity requirement is relatively high. Therefore, when the rotation speed exceeds the predetermined value, the fan is prone to detaching from the shaft.

[0004] Meanwhile, in order to have lights or a display screen in the middle, a design such as Chinese Patent 201921468806.8 was created. Its structure is complex, and during long-term operation, it is prone to wear and tear, which can damage the wireless charging (its rotation speed is high, for example, 2200 rpm), affecting the stability of use. Utility Model Content

[0005] The main purpose of this invention is to propose an externally driven computer fan, which aims to improve the existing computer fan structure and allows for structural adjustments based on actual needs.

[0006] To achieve the above objectives, this utility model proposes an externally driven computer fan, comprising:

[0007] A frame, wherein a pivot cavity is provided in the middle of the frame, and a receiving cavity is provided inside the frame, and a stator is provided in the receiving cavity;

[0008] An impeller is pivotally mounted in a pivot cavity. The impeller includes blades extending from the shaft center toward the pivot cavity and an annular frame disposed at the outer end of the blades. The annular frame is provided with a rotor that cooperates with the stator.

[0009] The stator is used to drive the impeller to rotate.

[0010] In the actual design, the traditional centrally located stator and rotor are changed, and the stator and rotor are respectively set on the frame and the impeller's annular frame, thereby realizing the rotation of the impeller. The improved computer fan has greater torque, so its upper limit of rotation is higher. At the same time, the driving area is larger, so the heat dissipation of the motor is better, which can effectively improve the service life of the computer fan.

[0011] Its advantages are: by using an external drive structure in conjunction with a hollow shaft, the computer fan can emit light or display predetermined data in the middle. Its structure is simple and stable, which changes the existing traditional design. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0013] Figure 2 This is a horizontal sectional view of the present invention;

[0014] Figure 3 This is a schematic diagram of the half-shaft of this utility model.

[0015] Figure 4 This is a schematic diagram of the present invention with a first bearing;

[0016] Figure 5 This is a schematic diagram of the present invention with a first bearing and a display device;

[0017] Figure 6 This is a schematic diagram of the present invention when a second bearing and a display device are provided;

[0018] Figure 7 This is a three-dimensional schematic diagram of the impeller.

[0019] In the picture,

[0020] 1 represents the frame, 10 represents the pivot cavity, and 11 represents the receiving cavity.

[0021] 2 represents the impeller, 20 represents the circular frame, and 21 represents the blade.

[0022] 31 is the stator, 32 is the rotor.

[0023] 41 is the first bearing, and 42 is the second bearing.

[0024] 51 is a shaft hole, 52 is a rotating shaft, and 53 is a through hole.

[0025] 6 is a display device, 61 is a first electrical connection part, and 62 is a second electrical connection part. Detailed Implementation

[0026] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0027] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0028] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0029] like Figures 1 to 7 As shown, a computer fan with an external drive structure includes:

[0030] The frame 1 has a pivot cavity 10 in the middle and a receiving cavity 11 inside, and a stator 31 is provided in the receiving cavity 11.

[0031] Impeller 2, which is pivotally mounted in pivot cavity 10, includes blades 21 extending from the shaft center toward pivot cavity 10 and an annular frame 20 disposed at the outer end of the blades 21, the annular frame 20 being provided with a rotor 32 that cooperates with stator 31;

[0032] The stator 31 is used to drive the impeller 2 to rotate.

[0033] In the actual design, the traditional centrally located stator 31 and rotor 32 are changed. The stator 31 and rotor 32 are respectively set on the ring frame 20 of the frame 1 and the impeller 2, thereby realizing the rotation of the impeller 2. The improved computer fan has a larger torque, so its upper limit of rotation is higher. At the same time, the driving area is larger, so the heat dissipation of the motor is better, which can effectively improve the service life of the computer fan.

[0034] Specifically, a first bearing 41 is provided between the outer wall of the annular frame 20 and the inner wall of the pivot cavity 10. If there is only one first bearing 41, the middle part may not be provided with a shaft hole 51 but has a shaft center.

[0035] In this embodiment of the utility model, the blade 21 is provided with a shaft hole 51 in the middle, and the frame 1 is provided with a rotating shaft 52 that cooperates with the shaft hole 51. A second bearing is provided between the rotating shaft 52 and the shaft hole 51. In actual design, the setting of the first bearing 41 and the second bearing 42 can ensure the stability of the impeller 2 rotation. At the same time, according to actual needs, only the first bearing 41 or the second bearing 42 can be set, or both bearings can be set.

[0036] Specifically, the shaft hole 51 is a half hole or a through hole. When the shaft hole 51 is a through hole, the rotating shaft is fixed and extends upward. The top of the rotating shaft is provided with a display device 6. Therefore, the display device 6 is not affected when the impeller 2 rotates. At the same time, its structure is simple and stable, which changes the traditional thinking.

[0037] In this embodiment of the invention, the middle part of the rotating shaft is a through hole, which is used for the cable of the display device 6 to pass through, thereby realizing power supply.

[0038] Specifically, the rotating shaft is provided with an integrally formed first electrical connection part 61, and the display device 6 is provided with a second electrical connection part 62 that cooperates with the first electrical connection part 61, thereby making the replacement or installation of the display device 6 more convenient and solving the problem that existing computer fans need to set up a display device 6 in the middle or that lighting devices require a complex structure to achieve this.

[0039] In this embodiment of the invention, the frame 1 is rectangular or circular; in actual design, different shapes can be set as needed. Preferably, an existing rectangular computer fan shape is used to meet the installation and use requirements of existing fans.

[0040] Specifically, the stator 31 is a magnetic induction coil, and the rotor 32 is a permanent magnet.

[0041] In this embodiment of the utility model, the first electrical connection part 61 is a pin integrally formed with the rotating shaft, and the second electrical connection part 62 is a gold finger provided on the display device 6.

[0042] Specifically, the display device 6 consists of an LCD screen, an LED screen, or a matrix of LED lights. The display device and the rotating shaft are detachably connected via snap-fit, screw, or magnetic attraction.

[0043] The bottom of the frame extends to a base, and the pivot is located in the middle of the base.

[0044] The permanent magnet and the circular frame are integrally injection molded.

[0045] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A computer fan with an external drive structure, characterized in that, include: A frame, wherein a pivot cavity is provided in the middle of the frame, and a receiving cavity is provided inside the frame, and a stator is provided in the receiving cavity; An impeller is pivotally mounted in a pivot cavity. The impeller includes blades extending from the shaft center toward the pivot cavity and an annular frame disposed at the outer end of the blades. The annular frame is provided with a rotor that cooperates with the stator. The stator is used to drive the impeller to rotate.

2. The computer fan with an external drive structure as described in claim 1, characterized in that: A first bearing is provided between the outer wall of the circular frame and the inner wall of the pivot cavity.

3. The computer fan with an external drive structure as described in claim 1, characterized in that: The blade has a shaft hole in the middle, the frame has a rotating shaft that mates with the shaft hole, and a second bearing is provided between the rotating shaft and the shaft hole.

4. The computer fan with an external drive structure as described in claim 3, characterized in that: The shaft hole is a half hole.

5. The computer fan with an external drive structure as described in claim 4, characterized in that: The frame is rectangular or circular in shape.

6. The computer fan with an external drive structure as described in claim 4, characterized in that: The stator is a magnetic induction coil, and the rotor is a permanent magnet.

7. The computer fan with an external drive structure as described in claim 3, characterized in that: The bottom of the frame extends to a base, and the pivot is located in the middle of the base.

8. The computer fan with an external drive structure as described in claim 6, characterized in that: The permanent magnet and the circular frame are integrally injection molded.

Images