Fan facilitating dust removal

Abstract

The utility model relates to the technical field of electric fans, and discloses a fan convenient for dust removal, which comprises a rotating wheel connected with a motor and a plurality of fan blades arranged at intervals around the circumferential direction of the rotating wheel, all the fan blades are synchronously fixed on a mounting ring matched with the rotating wheel in an inserting manner, and an inserting groove matched with the rotating wheel in an inserting manner is formed in the center of the mounting ring. And a limiting part for limiting the circumferential rotation and axial movement of the mounting ring relative to the rotating wheel after the rotating wheel and the mounting ring are matched in an inserted mode is arranged between the rotating wheel and the mounting ring. According to the fan, all the fan blades can be detached at a time so that dust on the fan blades can be cleaned conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of electric fans, in particular to a fan which is easy to clean. Background Art

[0002] An electric fan is a common heat dissipation and cooling device. When the fan is in use, the rotation of the fan blades drives the air flow around the fan blades to generate wind to cool people or objects. However, dust will accumulate on the surface and cross-section of the fan blades after long-term use. In order to make it easier for people to clean the dust on the fan blades, a Chinese patent with announcement number CN214330943U discloses a heat dissipation device with detachable fan blades. The device includes a frame, a drive motor is fixedly arranged on the frame, a rotating wheel is fixedly connected to the rotating shaft of the drive motor, and a plurality of fan blades detachably connected to the rotating wheel are arranged on the outer ring wall of the rotating wheel at intervals in the circumferential direction.

[0003] When people clean the above-mentioned cooling fan, they need to remove the fan blades from the rotating wheel one by one for cleaning, and then install the fan blades back to the rotating wheel one by one after cleaning. Each fan blade needs to be disassembled and assembled separately. The more fan blades there are, the longer it takes to disassemble and assemble the fan blades using the above-mentioned connection method, and the more inconvenient it is. Utility Model Content

[0004] In view of the shortcoming that each fan blade of the existing heat dissipation fan must be disassembled and assembled separately, the purpose of the utility model is to provide a fan that can disassemble all the fan blades at one time to facilitate cleaning of dust on the fan blades.

[0005] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0006] A fan that is easy to clean includes a rotating wheel connected to a motor and a plurality of fan blades arranged at intervals around the rotating wheel. All the fan blades are synchronously fixed on a mounting ring that is plugged into the rotating wheel. A slot that is plugged into the rotating wheel is provided at the center of the mounting ring. A limiting portion is provided between the rotating wheel and the mounting ring for limiting the circumferential rotation and axial movement of the mounting ring relative to the rotating wheel when the two are plugged into each other.

[0007] By adopting the above solution, when people need to clean the fan, they only need to unlock the limit part and then remove the mounting ring from the rotor, and all the fan blades can be removed for cleaning. Compared with the existing fan blade disassembly method, there is no need to remove each fan blade separately for cleaning, which simplifies the steps of disassembling the fan blades and makes cleaning the fan more convenient.

[0008] Preferably, the limiting portion includes a first accommodating groove opened along the radial direction of the side wall of the rotating wheel, a limiting pin elastically and telescopically arranged in the first accommodating groove, and a limiting groove recessed on the inner wall of the mounting ring for inserting the partially extended limiting pin, the insertion of the limiting pin into the limiting groove is controlled by an elastic part arranged at the bottom of the first accommodating groove, and the disengagement of the limiting pin from the limiting groove is controlled by a manual unlocking component installed on the rotating wheel.

[0009] Preferably, the manual unlocking assembly includes a second accommodating groove opened at the end of the rotating wheel away from the motor, a rotating driving member rotatably arranged in the second accommodating groove, a boss protruding from the end of the rotating driving member facing the bottom of the second accommodating groove and having a diameter smaller than the inner diameter of the second accommodating groove, and a pulling member connected between the limit pin and the boss and realizing the extension and retraction of the limit pin with the forward and reverse rotation of the rotating driving member. The manual unlocking assembly also includes a first through hole opened at the bottom of the first accommodating groove and connected to the second accommodating groove for the pulling member to pass through.

[0010] By adopting the above scheme, after the mounting ring is plugged into the rotating wheel, the limit pin is automatically popped out by the elastic member, and the limit mounting ring rotates or moves axially to lock the fan blade assembly on the rotating wheel; when people need to remove the fan blade assembly, they only need to rotate the rotating driving member, and the pulling member will be wound around the boss as the rotating driving member rotates and pull the limit pin back into the first accommodating groove. At this time, the mounting ring is unlocked and can be removed from the rotating wheel.

[0011] Preferably, at least two groups of manual unlocking components are arranged at intervals around the circumference of the rotating wheel.

[0012] By adopting the above scheme, the more limit pins are set, the more reliable the limiting of the mounting ring is, and the unlocking of all limit pins can be achieved simply by rotating the rotating drive member. Therefore, this scheme makes the limiting of the mounting ring more reliable without changing the difficulty of unlocking.

[0013] Preferably, the rotary drive member is provided with a rotating block for facilitating manual operation of the rotary drive member, and the rotating block is exposed outside the second accommodating groove.

[0014] Preferably, a guiding and positioning structure is provided between the rotating wheel and the mounting ring for quickly finding the position of the limiting part when the two are plugged in.

[0015] Preferably, the guiding and positioning structure comprises a slot having a non-circular cross-sectional shape, and the cross-sectional shape of the portion where the rotating wheel is plugged into the slot is consistent with the slot.

[0016] With the above solution, if a slot with a circular cross-section and a rotating wheel are used for plug-in, if the limit pin is not aligned with the limit slot during plug-in, it is necessary to rotate the mounting ring after plug-in to align the limit pin with the limit slot. For a slot with a non-circular cross-section, the limit pin will be aligned with the limit slot as long as it is plugged in at a specific angle. Therefore, using a slot with a non-circular cross-section will make the fan easier to install.

[0017] Preferably, the cross-section of the slot and the rotating wheel is a regular polygon.

[0018] By adopting the above scheme, when the rotating wheel and the slot cooperate with each other, each side wall surface that abuts each other can become a force point for the mounting ring. When the rotating wheel rotates, the torque is transmitted to the mounting ring through the side wall surfaces of the rotating wheel and the slot that abut each other, so that the force on the limit pin is reduced, the possibility of damage is reduced, and the service life of the limit pin can be extended.

[0019] The utility model has significant technical effects due to the adoption of the above technical solutions:

[0020] 1. When people need to clean the fan, they only need to unlock the limit part and then remove the mounting ring from the wheel, and all the fan blades can be removed for cleaning. Compared with the existing fan blade disassembly method, it is not necessary to remove each fan blade separately for cleaning, which simplifies the steps of disassembling the fan blades and makes cleaning the fan more convenient.

[0021] 2. In this solution, when the rotating wheel and the slot cooperate with each other, each side wall surface that abuts each other can become a force point for the mounting ring. When the rotating wheel rotates, the torque is transmitted to the mounting ring through the side wall surfaces of the rotating wheel and the slot that abut each other, so that the force on the limit pin is reduced, the possibility of damage is reduced, and the service life of the limit pin can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the external structure of a fan that is easy to clean in this embodiment;

[0023] Figure 2 This is a schematic diagram of the structural disassembly of a fan that is easy to clean in this embodiment;

[0024] Figure 3 This is a front view of a fan that is easy to clean in this embodiment;

[0025] Figure 4 yes Figure 3 The cross-sectional view about AA in FIG.

[0026] Figure 5 yes Figure 4 A partial enlarged view of a.

[0027] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. rotating wheel; 2. fan blade; 3. mounting ring; 4. slot; 5. first receiving groove; 6. limit pin; 7. limit groove; 8. elastic member; 9. second receiving groove; 10. rotating drive member; 11. boss; 12. pulling member; 13. first through hole; 14. rotating block; 15. bolt; 16. mounting hole; 17. threaded hole. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Example

[0030] A fan that is easy to clean Figure 1 As shown, it includes a rotating wheel 1 connected to the motor and a plurality of fan blades 2 arranged at intervals around the rotating wheel 1. All the fan blades 2 are synchronously fixed on a mounting ring 3 that is plugged with the rotating wheel 1. A slot 4 that is plugged with the rotating wheel 1 is opened at the center of the mounting ring 3. A guiding positioning structure is also provided between the rotating wheel 1 and the mounting ring 3 for quickly finding the position of the limit part when the two are plugged. Figure 1 or Figure 2 As shown, the guiding and positioning structure includes a slot 4 with a regular polygonal cross-sectional shape, and the cross-sectional shape of the portion where the rotating wheel 1 is plugged into the slot 4 is consistent with the slot 4. In this embodiment, the cross-sectional shape of the slot 4 is a hexagon.

[0031] A limiting portion is provided between the rotating wheel 1 and the mounting ring 3 to limit the circumferential rotation and axial movement of the mounting ring 3 relative to the rotating wheel 1 when the two are plugged together. Figure 4 or Figure 5 As shown, the limiting part includes a first accommodating groove 5 opened along the radial direction of the side wall of the rotating wheel 1, and a limiting pin 6 is elastically arranged in the first accommodating groove 5. A limiting groove 7 for the partially extended limiting pin 6 to be inserted is recessed on the inner wall of the mounting ring 3. The insertion of the limiting pin 6 and the limiting groove 7 is controlled by an elastic member 8 arranged at the bottom of the first accommodating groove 5. Figure 5 As shown, in this embodiment, the elastic member 8 is a spring whose two ends are fixedly connected to the bottom of the first accommodating groove 5 and the bottom of the limiting pin 6 respectively.

[0032] The disengagement of the limit pin 6 and the limit groove 7 is controlled by a manual unlocking assembly installed on the rotating wheel 1, according to Figure 5 As shown, the manual unlocking assembly includes a second accommodating groove 9 opened at one end of the rotating wheel 1 away from the motor, a rotating driving member 10 is rotatably arranged in the second accommodating groove 9, and a boss 11 with a diameter smaller than the inner diameter of the second accommodating groove 9 is convexly provided at one end of the rotating driving member 10 facing the bottom of the second accommodating groove 9, and a rotating block 14 is arranged on the rotating driving member 10 for people to manually operate the rotating driving member 10, and the rotating block 14 is exposed outside the second accommodating groove 9. Figure 2 or Figure 5 As shown, in the present embodiment, the rotary drive member 10 is rotatably arranged in the second accommodating groove 9 by means of a bolt 15 fixed in the second accommodating groove 9. A mounting hole 16 for the bolt 15 to pass through is provided on the rotary drive member 10. A threaded hole 17 threadedly connected with the bolt 15 is provided at the bottom of the second accommodating groove 9. The large head end of the bolt 15 can limit the rotary drive member 10 from being separated from the second accommodating groove 9. A gap is left between the large head end of the bolt 15 and the rotating wheel 1 for the rotating block 14 to move along the axial direction of the bolt 15. In this way, the rotary drive member 10 can be ensured to rotate smoothly. A pulling member 12 is connected between the limit pin 6 and the boss 11. The pulling member 12 can realize the extension and retraction of the limit pin 6 with the forward and reverse rotation of the rotary drive member 10. When the rotary drive member 10 rotates, the pulling member 12 will rap on the outer wall of the boss 11 and pull the limit pin 6 back into the first accommodating groove 5. Figure 5 As shown, in this embodiment, the pulling member 12 is a pull rope, and the two ends of the pull rope are fixedly connected to the limit pin 6 and the boss 11 respectively. The manual unlocking component also includes a first through hole 13 opened at the bottom of the first accommodating groove 5 and connected to the second accommodating groove 9, and the pull rope is inserted into the first through hole 13.

[0033] At least two groups of manual unlocking components are arranged around the rotating wheel 1 in the circumferential direction. Figure 5 As shown, in this embodiment, two groups of manual unlocking components are provided.

[0034] Combined with the above structure, reference Figure 1 to Figure 5 It can be seen that the steps of disassembling and installing the blades 2 of a fan that is easy to clean in this embodiment are as follows:

[0035] When disassembling, the person first rotates the rotating block 14 with one hand and then keeps it still, so that the rotating block 14 is retracted into the first receiving groove 5 and does not pop out, and then the installation ring 3 is pulled out from the rotating wheel 1 with the other hand, and the fan blade 2 together with the installation ring 3 can be removed;

[0036] During installation, one person first rotates the rotating block 14 with one hand and keeps it still. When the limit pin 6 is completely retracted into the limit groove 7, the person inserts the installation ring 3 onto the rotating wheel 1 with the other hand, and then releases the rotating block 14, and the limit pin 6 automatically pops out of the limit installation ring 3.

[0037] The above-mentioned disassembly and installation steps can remove all the fan blades 2 at one time, which is simpler than the existing disassembly and installation method of the fan blades 2. There is no need to remove or install the fan blades 2 one by one, which saves disassembly and installation time and makes it more convenient to clean the fan.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A fan for easy dust cleaning, comprising a rotating wheel (1) connected to a motor and a plurality of fan blades (2) arranged at intervals in the circumferential direction around the rotating wheel (1), characterized in that: All the fan blades (2) are synchronously fixed on a mounting ring (3) which is plugged into the rotating wheel (1); a slot (4) which is plugged into the rotating wheel (1) is provided at the center of the mounting ring (3); and a limiting portion which limits the circumferential rotation and axial movement of the mounting ring (3) relative to the rotating wheel (1) when the two are plugged into each other is provided between the rotating wheel (1) and the mounting ring (3).

2. A fan that is easy to clean according to claim 1, characterized in that: The limiting part comprises a first accommodating groove (5) provided on the side wall of the rotating wheel (1) along the radial direction thereof, a limiting pin (6) elastically and telescopically arranged in the first accommodating groove (5), and a limiting groove (7) recessed on the inner wall of the mounting ring (3) for the partially extended limiting pin (6) to be inserted, the insertion of the limiting pin (6) and the limiting groove (7) being controlled by an elastic member (8) arranged at the bottom of the first accommodating groove (5), and the disengagement of the limiting pin (6) and the limiting groove (7) being controlled by a manual unlocking component installed on the rotating wheel (1).

3. A fan that is easy to clean according to claim 2, characterized in that: The manual unlocking assembly comprises a second accommodating groove (9) opened at an end of the rotating wheel (1) away from the motor, a rotating driving member (10) rotatably arranged in the second accommodating groove (9), a boss (11) protruding from an end of the rotating driving member (10) facing the bottom of the second accommodating groove (9) and having a diameter smaller than the inner diameter of the second accommodating groove (9), and a pulling member (12) connected between the limit pin (6) and the boss (11) and realizing the extension and retraction of the limit pin (6) with the forward and reverse rotation of the rotating driving member (10). The manual unlocking assembly also comprises a first through hole (13) opened at the bottom of the first accommodating groove (5) and communicating with the second accommodating groove (9) for the pulling member (12) to pass through.

4. The fan that is easy to clean according to claim 3 is characterized in that: At least two groups of manual unlocking components are arranged at intervals in the circumferential direction of the rotating wheel (1).

5. The fan that is easy to clean according to claim 3, characterized in that: The rotary drive member (10) is provided with a rotating block (14) for facilitating manual operation of the rotary drive member (10), and the rotating block (14) is exposed outside the second accommodating groove (9).

6. The fan that is easy to clean according to claim 1, characterized in that: A guide positioning structure is also provided between the rotating wheel (1) and the mounting ring (3) for quickly finding the position of the limiting part when the two are plugged in.

7. The fan for easy dust cleaning according to claim 6, characterized in that: The guiding and positioning structure comprises a slot (4) having a non-circular cross-sectional shape, and the cross-sectional shape of the portion of the rotating wheel (1) plugged into the slot (4) is consistent with the slot (4).

8. The fan that is easy to clean according to claim 7, characterized in that: The cross-sectional shapes of the slot (4) and the rotating wheel (1) are regular polygons.

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