Detachable reversing cooling fan

Abstract

The utility model relates to a detachable reversing cooling fan. The detachable reversing cooling fan comprises a fan support, a fixed module and a movable module. The fixed module comprises a stator located on the fan support and a motor control panel connected with the stator. The movable module comprises a fan blade seat pivoted with the stator, a rotor located on the inner side wall of the fan blade seat, fan blades detachably connected to the peripheral side of the fan blade seat in a sleeving mode, and a fixed cover detachably installed on the fan blade seat. A lantern ring sleeved with the fan blade seat is arranged at the axis of the fan blade so that the fan blade can synchronously rotate along with the fan blade seat. The fixing cover is detachably installed at the top end of the fan blade base and limits the lantern ring on the fan blade base. The design concept of detachable fan blades is adopted, so that a user can switch the installation postures of the fan blades according to the airflow trend requirement, the requirements of the user for different airflow directions are met, the cost is low, the universality is high, and the airflow strength after reversing also meets the requirement.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation equipment technology, and in particular to a detachable commutator cooling fan. Background Technology

[0002] Cooling fans are widely used heat dissipation tools in electronic devices. They can be used alone or in conjunction with heat sinks. When a cooling fan is working, a negative pressure is created at one end, driving airflow. This flowing air carries away heat, improving the heat dissipation efficiency of the electronic device. The direction of the airflow generated during operation is related to the motor's rotation direction and the shape of the fan blades. Accordingly, to control the airflow direction and improve the efficiency of driving airflow, the shape of the fan blades is adjusted according to the preset airflow direction; for example, the angle of the fan blades may be adjusted.

[0003] In practical applications, different areas of electronic devices require different airflow directions. For traditional cooling fans, to meet these varying airflow requirements without altering the fan bracket's mounting method (i.e., not reversing the entire cooling fan, as this requires a compatible mounting and wiring structure on the electronic device, which is practically impossible), there are currently two solutions. One is to configure cooling fans with two airflow directions according to the user's needs. The drawback of this solution is its high cost and low versatility. The other is to install a current commutator in the cooling fan, changing the rotor's rotation direction by switching the current direction, thereby altering the airflow direction. The drawback of this solution is that, since the fan blade shape is fixed, if only the motor is reversed, the fan blade's orientation is not compatible with the current airflow direction, resulting in very weak airflow intensity.

[0004] Therefore, it is necessary to develop a new type of cooling fan that meets users' needs for different airflow directions, is low in cost, highly versatile, and whose airflow intensity after reversal also meets the requirements. Utility Model Content

[0005] Based on this, the present invention provides a detachable commutator cooling fan, which adopts the design concept of detachable fan blades, allowing users to switch the installation posture of the fan blades according to the airflow direction requirements, meeting the user's needs for different airflow directions, with low cost, high versatility, and the airflow intensity after commutation also meets the requirements.

[0006] A detachable commutator cooling fan, comprising:

[0007] Fan bracket;

[0008] A stator module mounted on a fan bracket; the stator module includes: a stator located on the fan bracket and a motor control board connected to the stator; and

[0009] A moving module is connected to the stationary module; the moving module includes: a fan blade seat pivotally connected to the stator, a rotor located on the inner wall of the fan blade seat, a fan blade detachably sleeved on the outer periphery of the fan blade seat, and a fixed cover detachably mounted on the fan blade seat; the fan blade's shaft is provided with a collar that sleeves the fan blade seat so that the fan blade rotates synchronously with the fan blade seat; the fixed cover is detachably mounted on the top of the fan blade seat and restricts the collar on the fan blade seat.

[0010] The aforementioned detachable reversing cooling fan features detachable blades and a removable cover. When reversing the airflow, the cover is first removed from the blade holder, then the blade is pulled out and rotated 180° before being reattached. Finally, the cover is reinstalled to lock the blade in place. Because the 180° rotation of the blades is achieved through disassembly without changing the rotor's direction, reversing the airflow is possible. Furthermore, the blade orientation after this operation matches the reversed airflow direction, minimizing the impact on airflow intensity. This detachable blade design allows users to switch the blade orientation according to airflow requirements, satisfying different airflow directions. It is cost-effective, highly versatile, and provides sufficient airflow intensity after reversal.

[0011] In one embodiment, the motor control board is equipped with LED lights, and the fan blade holder, fixing cover, and fan blades are all light-transmitting structures. When the LED lights are lit, light can be emitted through the fan blade holder, fixing cover, and fan blades, meeting the user's personalized fan lighting needs.

[0012] In one embodiment, a limiting post extending axially is provided on the outer periphery of the blade seat; a limiting groove for slidingly connecting the limiting post is provided on the inner wall of the collar. When the collar of the blade is axially fitted onto the outer periphery of the blade seat, the limiting post and the limiting groove engage to form a snap-fit ​​relationship, so that the collar and the blade seat are relatively stationary in the circumferential direction, satisfying the requirement that the blade rotates synchronously with the blade seat. The structure is simple and efficient.

[0013] In one embodiment, the outer periphery of the blade seat is provided with a stepped portion that protrudes radially outward; the inner sidewall of the collar is provided with a protruding strip that abuts against the stepped portion. When the collar of the blade is axially fitted onto the outer periphery of the blade seat, the stepped portion abuts against the protruding strip to form a snap-fit ​​relationship, thereby controlling the feed depth of the collar on the blade seat. With the help of the fixing cover, the blade seat and the blade can be kept relatively stationary in the axial direction. The structure is simple and efficient.

[0014] In one embodiment, the fixing cover is detachably mounted on the fan blade seat by screws, which is simple in structure, easy to operate, and has strong installation stability.

[0015] In one embodiment, the top of the blade holder is provided with a circumferentially oriented sliding groove; the sliding groove has an insertion section and a limiting section connecting the insertion section; the fixing cover has an inverted T-shaped locking post; the locking post passes through the insertion section into the sliding groove and slides towards the limiting section along the rotation direction of the rotor. The fixing cover can be disassembled and assembled by rotating it, which is simple in structure and convenient in operation.

[0016] In one embodiment, the fixed cover has an operating hole or operating handle at its center. The user can rotate the fixed cover by inserting an auxiliary tool into the operating hole or by holding the operating handle with their fingers. The structure is simple and the operation is convenient. Attached Figure Description

[0017] Figure 1 This is a perspective view of a detachable commutator cooling fan according to an embodiment of the present invention.

[0018] Figure 2 for Figure 1 A perspective view of the detachable commutator cooling fan from another angle;

[0019] Figure 3 for Figure 1 A half-sectional view of the detachable commutator cooling fan shown;

[0020] Figure 4 for Figure 3 A magnified view of part A in the detachable commutator cooling fan shown;

[0021] Figure 5 for Figure 1 An exploded view of the detachable commutator cooling fan shown.

[0022] Figure 6 for Figure 5 A perspective view of the stationary module in the detachable commutator cooling fan shown.

[0023] Figure 7 for Figure 5 A perspective view of the moving module in the detachable commutator cooling fan shown;

[0024] Figure 8 for Figure 7 A three-dimensional view of the fan blade holder in the moving module shown;

[0025] Figure 9 for Figure 7 A three-dimensional view of the fan blades in the moving module shown;

[0026] Figure 10 for Figure 7 A perspective view of the fan blade cover in the moving module shown;

[0027] Figure 11for Figure 10 A three-dimensional view of the fan blade cover in the moving module shown from another perspective;

[0028] Figure 12 for Figure 1 The diagram shows the assembly of the blades of the detachable commutator cooling fan. Figure 1 ;

[0029] Figure 13 for Figure 12 The diagram shows the assembly of the blades of the detachable commutator cooling fan. Figure 2 .

[0030] The meanings of the labels in the attached diagram are as follows:

[0031] 100-Removable commutator cooling fan;

[0032] 10-Fan bracket, 11-Sleeve;

[0033] 20-Stator module, 21-Stator, 211-Wire frame, 212-Iron core, 22-Motor control board, 221-LED light;

[0034] 30-Moving module, 31-Fan blade seat, 311-Limiting post, 312-Step section, 313-Slide groove, 3131-Insert section, 3132-Limiting section, 32-Rotor, 321-Positioning frame, 322-Magnet, 33-Fan blade, 331-Collar, 3311-Limiting groove, 3312-Protrusion, 34-Fixing cover, 341-Clip post, 342-Operating hole. Detailed Implementation

[0035] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0041] like Figures 1 to 13 As shown, it is a detachable commutator cooling fan 100 of this utility model.

[0042] like Figure 1 and Figure 2 As shown, the detachable commutator cooling fan 100 includes: a fan bracket 10, a fixed module 20 mounted on the fan bracket 10, and a moving module 30 connected to the fixed module 20. The fan bracket 10 supports the fixed module 20 and the moving module 30 and is used to connect electronic devices. During operation, the fixed module 20 generates an alternating magnetic field, which drives the moving module 30 to rotate and generate airflow.

[0043] The following text, combined with Figures 1 to 13 The above-mentioned detachable commutator cooling fan 100 will be further explained.

[0044] like Figure 5 As shown, in this embodiment, the fan bracket 10 can be a one-piece molded insulating plastic bracket (or a base structure). Furthermore, as... Figure 5 As shown, in this embodiment, a sleeve 11 pivotally connected to the moving module 30 is provided at the center of the fan bracket 10.

[0045] like Figure 6 As shown, the stator module 20 includes: a stator 21 located on the fan bracket 10 and a motor control board 22 connected to the stator 21. For ease of understanding, see... Figure 3 , Figure 4 ,as well as Figure 6 As shown, in this embodiment, the stator 21 includes: a wire frame 211 connecting the fan bracket 10, an iron core 212 (e.g., silicon steel sheet) mounted on the wire frame 211, and enameled wire (not shown) wound on the iron core 212 and the wire frame 211. The enameled wire is connected to the motor control board 22.

[0046] like Figure 7As shown, the moving module 30 includes: a fan blade seat 31 pivotally connected to the stator 21, a rotor 32 located on the inner wall of the fan blade seat 31, a fan blade 33 detachably sleeved on the outer periphery of the fan blade seat 31, and a fixing cover 34 detachably mounted on the fan blade seat 31. The fan blade 33 has a collar 331 sleeved on its shaft to allow the fan blade 33 to rotate synchronously with the fan blade seat 31. The fixing cover 34 is detachably mounted on the top of the fan blade seat 31 and restricts the collar 331 to the fan blade seat 31.

[0047] like Figure 7 As shown, in this embodiment, the rotor 32 includes: a positioning frame 321 located on the inner sidewall of the fan blade seat 31 and a magnet 322 mounted on the positioning frame 321.

[0048] In order to ensure that the fan blade 33 can rotate synchronously with the fan blade seat 31 after the collar 331 is engaged with the fan blade seat 31, in this embodiment, as follows: Figure 8 As shown, a limiting post 311 extending axially is provided on the outer periphery of the blade seat 31. Correspondingly, as... Figure 9 As shown, the inner wall of the collar 331 is provided with a limiting groove 3311 for sliding connection of the limiting post 311. When the collar 331 of the fan blade 33 is axially fitted into the outer periphery of the fan blade seat 31, the limiting post 311 and the limiting groove 3311 mate to form a snap-fit ​​relationship, so that the collar 331 and the fan blade seat 31 are relatively stationary in the circumferential direction, which meets the requirement that the fan blade 33 rotates synchronously with the fan blade seat 31. The structure is simple and efficient.

[0049] Furthermore, since the collar 331 is axially fitted onto the fan blade seat 31, in order to improve installation accuracy and prevent the fan blade 33 from wobbling axially during operation, in this embodiment, as follows: Figure 8 As shown, the outer periphery of the blade holder 31 is provided with a stepped portion 312 that protrudes radially outward. Correspondingly, as... Figure 9 As shown, the inner wall of the collar 331 is provided with a protrusion 3312 that abuts against the step portion 312. When the collar 331 of the fan blade 33 is axially fitted onto the outer periphery of the fan blade seat 31, the step portion 312 abuts against the protrusion 3312 to form a snap-fit ​​relationship, thereby controlling the feed depth of the collar 331 on the fan blade seat 31. Combined with the fixing cover 34, this allows for relative axial stillness between the fan blade seat 31 and the fan blade 33, resulting in a simple and efficient structure. Furthermore, considering the consistency of the installation position of the fan blade 33 after reversible mounting, the protrusion 3312 should be positioned at half the axial depth of the collar 331.

[0050] In this design, the detachable connection between the fixed cover 34 and the fan blade seat 31 can be achieved in several ways.

[0051] For example, in some embodiments, the fixing cover 34 is detachably mounted on the fan blade seat 31 by screws, which is simple in structure, easy to operate, and has strong installation stability. For example, a through hole is opened in the center of the fixing cover 34, and a screw hole is opened in the center of the fan blade seat 31, so that the fixing cover 34 are connected together by screws.

[0052] For example, in this embodiment, such as Figure 8 As shown, the top of the blade holder 31 is provided with a circumferentially oriented sliding groove 313, and the sliding groove 313 is provided with an insertion section 3131 and a limiting section 3132 communicating with the insertion section 3131 (the width of the insertion section 3131 is greater than the width of the limiting section 3132). Accordingly, as Figure 11 As shown, the fixing cover 34 is provided with an inverted T-shaped retaining post 341. During assembly, as... Figure 7 As shown, the locking pin 341 slides from the insertion section 3131 into the sliding groove 313 and then slides towards the limiting section 3132 along the rotation direction of the rotor 32. The fixing cover 34 can be installed and removed by rotating it, which is simple in structure and easy to operate.

[0053] Furthermore, such as Figure 10 As shown, an operating hole 342 (for example, in this embodiment, the operating hole 342 is a flathead screwdriver) can be provided at the center of the fixed cover 34. The user can rotate the fixed cover 34 by inserting an auxiliary tool (such as a specially configured key or a common flathead screwdriver) into the operating hole 342. The structure is simple and the operation is convenient. In other embodiments, the operating hole 342 can be replaced with an operating handle, allowing the user to rotate the fixed cover 34 by gripping the handle with their fingers.

[0054] Brief description of working principle:

[0055] Both the fan blades 33 and the mounting cover 34 are detachable. When it is necessary to control the airflow of the fan to switch in the opposite direction, such as... Figure 12 As shown, first remove the fixing cover 34 from the fan blade seat 31 (for example, in this embodiment, first rotate the fixing cover 34 in the opposite direction of the rotor 32's rotation, and then remove the fixing cover 34 axially). For ease of user operation, as... Figure 10 As shown, the top surface of the fixed cover 34 can be equipped with indicators to guide user operation. Then, as... Figure 13As shown, the fan blade 33 is pulled out axially from the fan blade holder 31. Then, the fan blade 33 is rotated 180° and then axially reattached to the fan blade holder 31. Finally, the fixing cover 34 is reinstalled on the fan blade holder 31 to lock the fan blade 33 (for example, in this embodiment, the fixing cover 34 is rotated in the direction of rotation of the rotor 32). Since the 180° rotation of the fan blade 33 is achieved only by disassembly, without changing the direction of rotation of the rotor 32, the airflow of the fan can be reversed. Moreover, the placement of the fan blade 33 after this operation matches the direction of the switched airflow, and the impact on the airflow intensity is minimal.

[0056] In addition, in order to meet users' personalized needs, such as Figure 6 As shown, in this embodiment, the motor control board 22 is equipped with LED lights 221 (for example, multiple LED lights 221 are evenly spaced on the motor control board 22), and the fan blade holder 31, the fixing cover 34, and the fan blade 33 are all light-transmitting structures. When the LED lights 221 are lit, light can be emitted through the fan blade holder 31, the fixing cover 34, and the fan blade 33, meeting the user's personalized fan lighting needs.

[0057] The aforementioned detachable commutator cooling fan 100 adopts a design concept of detachable fan blades 33, which allows users to switch the installation posture of the fan blades 33 according to the airflow direction requirements, meet the user's needs for different airflow directions, has low cost, high versatility, and the airflow intensity after commutation also meets the requirements.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A detachable reversing cooling fan characterized by, include: Fan bracket; A fixed module mounted on the fan bracket; The stator module includes: a stator located on the fan bracket and a motor control board connected to the stator; and A moving module is connected to the fixed module; the moving module includes: a fan blade seat pivotally connected to the stator, a rotor located on the inner side wall of the fan blade seat, a fan blade detachably sleeved on the outer periphery of the fan blade seat, and a fixed cover detachably mounted on the fan blade seat; the fan blade has a collar sleeved on the fan blade seat at its axis so that the fan blade rotates synchronously with the fan blade seat; the fixed cover is detachably mounted on the top of the fan blade seat and restricts the collar on the fan blade seat.

2. The demountable reversing heat-dissipating fan according to claim 1, wherein, The motor control board is equipped with LED lights, and the fan blade holder, the fixing cover, and the fan blade are all light-transmitting structures.

3. The demountable reversing heat-dissipating fan according to claim 1, wherein, The outer periphery of the blade seat is provided with a limiting post extending axially; the inner wall of the collar is provided with a limiting groove that is slidably connected to the limiting post.

4. The demountable reversing heat-dissipating fan according to claim 1, wherein, The outer periphery of the blade seat is provided with a stepped portion that protrudes radially outward; the inner sidewall of the collar is provided with a protruding strip that abuts against the stepped portion.

5. The detachable commutator cooling fan according to claim 1, characterized in that, The fixing cover is detachably mounted on the fan blade seat by screws.

6. The demountable reversing heat-dissipating fan according to claim 1, wherein, The top of the blade holder is provided with a circumferentially arranged sliding groove; the sliding groove is provided with an insertion section and a limiting section connecting the insertion section; the fixing cover is provided with an inverted T-shaped locking post; the locking post passes through the insertion section into the sliding groove and slides towards the limiting section along the rotation direction of the rotor.

7. The demountable reversing heat-dissipating fan according to claim 6, wherein, The fixed cover has an operating hole or operating handle at its center.

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