Portable miniature USB fan

Abstract

The utility model discloses a portable miniature USB fan which comprises a fan body and a base, an air inlet and an air outlet are formed in the fan body, the fan body is detachably matched with the base, the fan body is rotationally matched with the base, the fan body comprises a shell, an impeller assembly and a first magnetic attraction piece are arranged in the shell, and the first magnetic attraction piece is arranged in the shell. The side, close to the base, of the shell is provided with an arc part, the first magnetic attraction part is arranged along the rotating path of the fan body relative to the base, the base comprises an arc-shaped groove and a second magnetic attraction part, the arc part is rotationally matched with the arc-shaped groove, and the second magnetic attraction part is arranged in the arc-shaped groove. The fan body is matched with the base in a magnetic attraction mode through the first magnetic attraction piece and the second magnetic attraction piece. The utility model has the following advantages and effects: the scheme utilizes a new mechanical structure, and has the effects that the base and the fan main body are magnetically attracted and are detachable, and the air outlet pitch angle is adjustable.

Description

A portable micro USB fan Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a portable micro USB fan. Background Technology

[0002] A Chinese patent with publication number CN221400999U discloses a portable, fixable fan, comprising: a fan body, an auxiliary fixing component, and a support component. The auxiliary fixing component and the support component are detachably connected. The support component includes a first support arm and a second support arm that are rotatably connected, and the maximum rotation angle between the first support arm and the second support arm is 90°. The first support arm is connected to the auxiliary fixing component, which is used to connect to the object to be fixed. The base of the fan body is detachably connected to the second support arm.

[0003] However, the aforementioned portable, fixed fans have the following drawbacks: the fan body and support are not easy to disassemble, the fan's airflow tilt angle is difficult to adjust, and the airflow direction is singular. Summary of the Invention

[0004] The purpose of this invention is to provide a portable micro USB fan with a magnetically attached and detachable base and fan body, and an adjustable airflow tilt angle.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a portable micro USB fan, comprising a fan body and a base, wherein the fan body has an air inlet and an air outlet, the fan body and the base are detachably coupled, and the fan body and the base are rotatably coupled, the fan body includes a shell, the shell contains an impeller assembly and a first magnetic attractor, the shell has an arcuate portion near the base, the first magnetic attractor is disposed along the path of the fan body rotating relative to the base, the base includes an arcuate groove and a second magnetic attractor, the arcuate portion is rotatably coupled with the arcuate groove, and the arcuate groove contains the second magnetic attractor, the fan body is magnetically coupled to the base through the first magnetic attractor and the second magnetic attractor.

[0006] By adopting the above technical solution, when the fan is in use, the fan body is rotated and mounted on the base. The impeller assembly rotates, causing the air inlet on the fan housing to axially draw in air, which is then discharged through the air outlet on the front side of the housing, thus realizing the fan's air blowing and heat dissipation function. The fan body can be magnetically attached to the base. At this time, the first magnetic component inside the fan body and the second magnetic component in the mounting slot magnetically engage, improving the stability of the fan body installation and facilitating the disassembly of the fan body and the base, thereby improving portability. In addition, the bottom of the fan housing is provided with an arc-shaped part. When the fan body is mounted on the base, the arc-shaped part can fit into the arc-shaped groove, allowing the fan body to rotate relative to the arc-shaped groove to achieve an adjustable air outlet angle.

[0007] A further feature of this invention is that: an inner shell is provided inside the outer shell, a sandwich layer is provided between the outer shell and the inner shell, the first magnetic attractor is provided in the sandwich layer, an installation groove is provided in the arc-shaped groove, and the second magnetic attractor is fixed in the installation groove.

[0008] By adopting the above technical solution, when installing the fan, the first magnetic chuck is installed in the interlayer between the outer shell and the inner shell, and the second magnetic chuck is installed in the mounting groove. This facilitates the positioning and installation of the first and second magnetic chucks. In addition, it avoids the first magnetic chuck from affecting other internal components of the fan body, and at the same time, it prevents the first magnetic chuck from being exposed, thus increasing its service life.

[0009] A further feature of this invention is that a supporting rib is provided inside the interlayer, and the supporting rib supports the first magnetic suction member.

[0010] By adopting the above technical solution, when the first magnetic component is installed in the interlayer, the bottom of the first magnetic component is supported by a supporting rib, so that the upper surface of the first magnetic component is in close contact with the inner shell and the lower surface abuts against the supporting rib, thereby achieving the effect of fixing the first magnetic component and improving the installation stability.

[0011] A further feature of this invention is that a limiting rib is provided inside the interlayer, and the limiting rib abuts against the end of the first magnetic attractor.

[0012] By adopting the above technical solution, the end of the first magnetic suction member abuts against the limiting rib in the interlayer, which restricts the displacement of the first magnetic suction member in the interlayer, further fixes the first magnetic suction member, prevents the first magnetic suction member from shaking when the fan is running, and thus reduces noise.

[0013] A further feature of this invention is that the inner shell includes a first inner shell and a second inner shell, the first inner shell is provided with a positioning groove, and the second inner shell is provided with a positioning protrusion. When the first inner shell and the second inner shell are fastened together, the positioning protrusion is inserted into the positioning groove for positioning.

[0014] By adopting the above technical solution, during shell installation, the positioning groove of the first inner shell is used as a reference, and the positioning protrusion of the second shell is aligned with the positioning groove. The first inner shell and the second inner shell are then fastened together. This has the function of positioning and installing the first inner shell and the second inner shell, improving the convenience of inner shell installation. At the same time, when the first inner shell and the second inner shell are fastened together, the positioning groove restricts the displacement of the positioning protrusion, preventing the first inner shell and the second inner shell from rotating relative to each other, thus improving the stability of inner shell installation.

[0015] A further feature of this invention is that the housing includes a first outer shell and a second outer shell, the first outer shell is provided with a buckle, and the second outer shell is provided with a slot, wherein when the first outer shell and the second outer shell are fastened together, the buckle engages with the slot.

[0016] By adopting the above technical solution, when installing the housing, the user snaps the buckles on the first outer shell into the slots on the second outer shell, so that the first and second outer shells are fastened together to form a complete housing, which improves the structural stability of the housing and facilitates the positioning and installation of the first and second outer shells. When disassembling the housing, a certain separation force is applied to the second outer shell to separate and disengage the buckles and slots, thereby disassembling the first and second outer shells, making the disassembly of the housing more convenient.

[0017] A further feature of this invention is that the impeller assembly includes centrifugal fan blades and a drive motor, the centrifugal fan blades are mounted on the output shaft of the drive motor, and the drive motor is mounted inside the housing.

[0018] By adopting the above technical solution, the drive motor drives the centrifugal fan blades to rotate. Compared with the traditional axial fan blades, it outputs a larger air volume with the same space occupation. In the micro fan, the internal space of the fan body is limited. The configuration of centrifugal fan enables the micro fan to have a large air pressure, thereby improving the blowing and cooling effect.

[0019] A further feature of this invention is that an air guide frame is provided inside the air outlet, and a corresponding support groove is provided on the housing, with the two sides of the air guide frame respectively inserted into the support groove.

[0020] By adopting the above technical solution, when the fan is operating, the air is guided out by the air guide frame to achieve precise air delivery, and the air guide frame is inserted into the support groove opened on the inner surface of the housing to improve the installation stability of the air guide frame.

[0021] A further feature of this invention is that the air guide frame includes longitudinal air guide plates and transverse air guide plates, the longitudinal air guide plates are arranged at intervals, the longitudinal air guide plates are provided with insertion slots, the transverse air guide plates are inserted and positioned into the insertion slots, and the ends of the transverse air guide plates are inserted and engaged with the support slots.

[0022] By adopting the above technical solution, the horizontal and vertical air guide vanes are positioned and installed by means of the plug-in slots to form an air guide frame. The air guide frame is installed on the bracket slots on the inner surfaces of the first and second outer shells, which facilitates the installation of the air guide frame. When the impeller assembly is operating, the air is axially inlet, gathers at the air outlet, and is guided out by the air guide frame to achieve precise air delivery.

[0023] A further feature of this invention is that the housing is provided with a cable routing groove, the fan body is provided with a USB power cable, the USB power cable is positioned and engaged with the cable routing groove, and the housing is provided with an anti-detachment block, which is fixed to the opening end of the cable routing groove.

[0024] By adopting the above technical solution, a cable routing groove is opened on the inner surface of the housing, and the USB power cable is installed in the cable routing groove, which reduces the space occupied and improves the space utilization. In addition, an anti-detachment block is set on the side of the cable routing groove near the inside of the fan to prevent the USB power cable from detaching from the cable routing groove and interfering with the normal operation of the fan. It also improves the neatness of the internal wiring of the fan and facilitates the disassembly and maintenance of the fan.

[0025] In summary, this utility model has the following beneficial effects:

[0026] 1. The fan body with a first magnetic attachment and the base with a second magnetic attachment are used, so that the fan body can be magnetically attached to the base, making it easy to disassemble.

[0027] 2. It adopts a fan body with a rounded part and a base with an arc groove, which has the effect of adjustable air outlet angle.

[0028] 3. The inner shell is equipped with positioning protrusions and positioning grooves, and the outer shell is equipped with buckles and slots, which facilitates the positioning and installation of the shell and makes the shell easy to disassemble.

[0029] 4. The cable tray with anti-detachment blocks improves space utilization, keeps the cables neat, and facilitates maintenance. Attached Figure Description

[0030] Figure 1 is a schematic diagram of a portable micro USB fan.

[0031] Figure 2 is a cross-sectional view of a portable micro USB fan.

[0032] Figure 3 is a schematic diagram of the base structure.

[0033] Figure 4 is a schematic diagram of the first magnetic suction component.

[0034] Figure 5 is a schematic diagram of the first outer shell structure.

[0035] Figure 6 is a schematic diagram of the second outer shell structure.

[0036] Figure 7 is a schematic diagram of the impeller assembly.

[0037] Figure 8 is a schematic diagram of the air guide frame installation.

[0038] Figure 9 is a schematic diagram of the air guide frame structure.

[0039] In the diagram: 1. Fan body; 11. Housing; 111. First outer shell; 112. Second outer shell; 113. Buckle; 114. Slot; 12. Impeller assembly; 121. Centrifugal fan blade; 122. Drive motor; 13. First magnetic clasp; 14. Air inlet; 15. Air outlet; 16. Arc-shaped part; 2. Base; 21. Arc-shaped groove; 22. Mounting groove; 23. Second magnetic clasp; 3. Inner shell; 31. First inner shell; 32. Second inner shell; 33. Positioning groove; 34. Positioning protrusion; 4. Interlayer; 41. Supporting rib; 42. Limiting rib; 5. Air guide frame; 51. Longitudinal air guide vane; 52. Transverse air guide vane; 53. Plug-in slot; 6. Bracket slot; 7. Cable routing slot; 71. Anti-detachment block; 72. USB power cable. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings.

[0041] A portable mini USB fan, as shown in Figures 1-3, includes a fan body 1 and a base 2. The fan body 1 has an air inlet 14 and an air outlet 15. The fan body 1 and the base 2 are detachably connected and rotatably connected. The fan body 1 includes a housing 11, inside which is an impeller assembly 12 and a first magnetic member 13. The housing 11 has an arcuate portion 16 near the base 2. The first magnetic member 13 is arranged along the path of rotation of the fan body 1 relative to the base 2. The base 2 includes an arcuate groove 21. The second magnetic component 23, the arc portion 16 fits into the arc groove 21 and rotates with the arc groove 21. When the user uses it, the fan body 1 is rotated so that the arc portion 16 of the fan rotates relative to the arc groove 21 of the base 2, thereby adjusting the air outlet 15 air outlet direction. The arc groove 21 is provided with the second magnetic component 23. The fan body 1 is magnetically attracted to the base 2 through the first magnetic component 13 and the second magnetic component 23. After the air outlet 15 reaches the air outlet direction required by the user, the fan body 1 is magnetically fixed to the base 2, thereby maintaining the air outlet direction.

[0042] As shown in Figures 1-4, an inner shell 3 is provided inside the outer shell 11, and a sandwich layer 4 is provided between the outer shell 11 and the inner shell 3. The first magnetic suction member 13 is provided in the sandwich layer 4, and an installation groove 22 is provided in the arc-shaped groove 21. The second magnetic suction member 23 is fixed in the installation groove 22. When installing the fan, the first magnetic suction member 13 is installed in the sandwich layer 4 between the outer shell 11 and the inner shell 3, and the second magnetic suction member 23 is installed in the installation groove 22. This facilitates the positioning and installation of the first magnetic suction member 13 and the second magnetic suction member 23. At the same time, it avoids the first magnetic suction member 13 from affecting other internal components of the fan body 1, and also prevents the first magnetic suction member 13 from being exposed, thus increasing its service life. In addition, in this embodiment, the first magnetic suction member 13 is an iron arc-shaped piece, and the second magnetic suction member 23 is a magnet. In another embodiment, an arc-shaped magnet can also be used as the first magnetic suction member 13, so that the fan body 1 can not only be magnetically attached to the base 2, but also to tools such as iron frames, so as to broaden the application scenarios of the fan.

[0043] Furthermore, the interlayer 4 is provided with supporting ribs 41, which are arranged at intervals. When the first magnetic suction member 13 is installed in the interlayer 4, the bottom of the first magnetic suction member 13 is supported by the supporting ribs 41, so that the upper surface of the first magnetic suction member 13 is in close contact with the inner shell 3 body 11, and the lower surface abuts against the supporting ribs 41, thereby achieving the effect of fixing the first magnetic suction member 13 and improving the installation stability. In addition, the supporting ribs also have a limiting function to prevent the first magnetic suction member 13 from undergoing radial displacement, avoid collision between the first magnetic suction member 13 and the shell 11 and the inner shell 3 during the use of the fan, and reduce noise.

[0044] Preferably, a limiting rib 42 is provided inside the interlayer 4. The limiting rib 42 abuts against the end of the first magnetic suction member 13, which restricts the circumferential displacement of the first magnetic suction member 13 in the interlayer 4, further fixing the first magnetic suction member 13, preventing the first magnetic suction member 13 from shaking when the fan is running, and further reducing noise.

[0045] Furthermore, as shown in Figures 5 and 6, the inner shell 3 includes a first inner shell 31 and a second inner shell 32. A positioning groove 33 is provided at the edge of the first inner shell 31, and a positioning protrusion 34 is provided in the second inner shell 32 corresponding to the positioning groove 33. When the first inner shell 31 and the second inner shell 32 are fastened together, the positioning protrusion 34 is inserted into the positioning groove 33 for positioning. The positioning of the positioning groove 33 and the positioning protrusion 34 facilitates the fastening of the inner shell 3 and improves the ease of installation of the inner shell 3. At the same time, when the first inner shell 31 and the second inner shell 32 are fastened together, the positioning groove 33 restricts the displacement of the positioning protrusion 34, avoids relative rotation of the first inner shell 31 and the second inner shell 32, and improves the installation stability of the inner shell 3.

[0046] As shown in Figures 5 and 6, the housing 11 includes a first outer shell 111 and a second outer shell 112. In this embodiment, a buckle 113 is provided at the edge of the first outer shell 111, and the buckles 113 are arranged circumferentially at intervals along the edge of the first outer shell 111. A corresponding slot 114 is provided on the second outer shell 112. When the first outer shell 111 and the second outer shell 112 are fastened together, the buckles 113 and the slots 114 engage to form the housing 11, which improves the structural stability of the housing 11 and facilitates the positioning and installation of the first outer shell 111 and the second outer shell 112. When disassembling the first shell 111, a certain separation force is applied to the second shell 112 to separate and disengage the buckle 113 and the slot 114, thereby disassembling the first shell 111 and the second shell 112, making the disassembly of the shell 11 more convenient. In addition, when installing the first magnetic component 13, the first magnetic component 13 is first placed into the interlayer 4, and then the first shell 111 and the second shell 112 are fastened together to fix the first magnetic component 13 in the interlayer 4. When replacing the first magnetic component 13, the first shell 111 and the second shell 112 are disassembled and the first magnetic component 13 is removed.

[0047] As shown in Figures 7 and 8, the impeller assembly 12 includes centrifugal fan blades 121 and a drive motor 122. The centrifugal fan blades 121 are mounted on the output shaft of the drive motor 122, which is installed inside the housing 11. The drive motor 122 drives the centrifugal fan blades 121 to rotate. Compared with traditional axial flow fan blades, it outputs a larger air volume with the same space occupation. In the micro fan, the internal space of the fan body 1 is limited. The centrifugal fan configuration enables the micro fan to have a larger air pressure, thereby improving the blowing and cooling effect.

[0048] As shown in Figures 6, 8, and 9, an air guide frame 5 is provided inside the air outlet 15 of the fan body 1. A bracket groove 6 is opened on the inner surface of the fan housing 11. The air guide frame 5 is inserted into the bracket groove 6. When installing the air guide frame 5, first insert one end of the air guide frame 5 into the bracket groove 6 opened on the second outer shell 112, and then fasten the first outer shell 111 and the second outer shell 112 together. At the same time, the other end of the air guide frame 5 is inserted into the bracket groove 6 on the inner surface of the first outer shell 111 to facilitate the stable installation of the air guide frame 5.

[0049] Furthermore, the air guide frame 5 includes longitudinal air guide vanes 51 and transverse air guide vanes 52. The longitudinal air guide vanes 51 are arranged at intervals and have insertion slots 53. The transverse air guide vanes 52 are positioned and guided by the insertion slots 53 and are inserted and cooperated with the longitudinal air guide vanes 51. In this embodiment, the longitudinal air guide vanes 51 are provided with three insertion slots 53, and three transverse air guide vanes 52 are inserted accordingly, which facilitates the positioning and installation of the longitudinal air guide vanes 51 and the transverse air guide vanes 52, further improving the installation stability of the air guide frame 5. At the same time, when the impeller assembly 12 is operating, axial air intake is collected at the air outlet 15 and guided out through the air guide frame 5 to achieve precise air delivery.

[0050] As shown in Figure 8, the inner surface of the housing 11 is recessed inward to form a cable routing groove 7. The fan body 1 is equipped with a USB power cable 72. The USB power cable 72 is inserted into the cable routing groove 7, which reduces the space occupied and improves the utilization rate of the internal space of the fan body 1. Furthermore, an anti-detachment block 71 is provided on the side of the cable routing groove 7 near the inside of the fan to prevent the USB power cable 72 from detaching from the cable routing groove 7 and interfering with the normal operation of the fan. This also improves the neatness of the internal wiring of the fan and facilitates the disassembly and maintenance of the fan.

[0051] The basic working principle of this utility model is as follows: A first magnetic chuck 13 and a second magnetic chuck 23 on the base magnetically engage. During disassembly, a certain external force is applied to the fan body 1 to separate the first magnetic chuck 13 and the second magnetic chuck 23, thus enabling the fan body 1 and base 2 to be detachable. Because the shell 11 of the fan body 1 has an arc-shaped portion 16 near the base 2, and the first magnetic chuck 13 is arranged along the path of rotation of the fan body 1 relative to the base 2, the arc-shaped portion 16 can fit against the arc-shaped groove 21 when the fan body 1 is installed on the base 2, allowing the fan body 1 to rotate relative to the arc-shaped groove 21. This design achieves the advantages of magnetic engagement between the fan body 1 and base 2, convenient installation and disassembly of the fan body 1, and adjustable airflow angle of the fan body 1.

[0052] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A portable micro USB fan, comprising a fan body (1) and a base (2), wherein the fan body (1) has an air inlet (14) and an air outlet (15), characterized in that: The fan body (1) and the base (2) are detachably coupled, and the fan body (1) and the base (2) are rotatably coupled. The fan body (1) includes a housing (11), and the housing (11) is provided with an impeller assembly (12) and a first magnetic suction member (13). The housing (11) is provided with an arc portion (16) on the side corresponding to the base (2). The first magnetic suction member (13) is provided along the path of the fan body (1) rotating relative to the base (2). The base (2) includes an arc groove (21) and a second magnetic suction member (23). The arc portion (16) is rotatably coupled with the arc groove (21), and the arc groove (21) is provided with the second magnetic suction member (23). The fan body (1) is magnetically coupled to the base (2) through the first magnetic suction member (13) and the second magnetic suction member (23).

2. The portable micro-USB fan of claim 1, wherein: The housing (11) is provided with an inner shell (3), and a sandwich layer (4) is provided between the housing (11) and the inner shell (3). The first magnetic suction member (13) is provided in the sandwich layer (4), and an installation groove (22) is provided in the arc groove (21). The second magnetic suction member (23) is fixed in the installation groove (22).

3. The portable micro-USB fan of claim 2, wherein: The interlayer (4) is provided with a supporting rib (41), which supports the first magnetic suction member (13).

4. The portable micro-USB fan of claim 2, wherein: The interlayer (4) is provided with a limiting rib (42) inside, and the limiting rib (42) abuts against the end of the first magnetic suction member (13).

5. The portable micro-USB fan of claim 2, wherein: The inner shell (3) includes a first inner shell (31) and a second inner shell (32). The first inner shell (31) is provided with a positioning groove (33), and the second inner shell (32) is provided with a positioning protrusion (34). When the first inner shell (31) and the second inner shell (32) are fastened together, the positioning protrusion (34) is inserted into the positioning groove (33) for positioning.

6. The portable micro-USB fan of claim 1, wherein: The housing (11) includes a first outer shell (111) and a second outer shell (112). The first outer shell (111) is provided with a buckle (113), and the second outer shell (112) is provided with a slot (114). When the first outer shell (111) and the second outer shell (112) are fastened together, the buckle (113) engages with the slot (114).

7. The portable micro-USB fan of claim 1, wherein: The impeller assembly (12) includes centrifugal fan blades (121) and a drive motor (122). The centrifugal fan blades (121) are mounted on the output shaft of the drive motor (122), and the drive motor (122) is mounted inside the housing (11).

8. The portable micro-USB fan of claim 1, wherein: An air guide frame (5) is provided inside the air outlet (15), and a corresponding support groove (6) is opened on the housing (11). The air guide frame (5) is inserted into the support groove (6) on both sides.

9. The portable micro-USB fan of claim 8, wherein: The air guide frame (5) includes longitudinal air guides (51) and transverse air guides (52). The longitudinal air guides (51) are arranged at intervals. The longitudinal air guides (51) are provided with insertion slots (53). The transverse air guides (52) are inserted and positioned in the insertion slots (53). The ends of the transverse air guides (52) are inserted and engaged with the support slots (6).

10. The portable micro-USB fan of claim 1, wherein: The housing (11) is provided with a cable tray (7), and the fan body (1) is provided with a USB power cable (72). The USB power cable (72) is positioned and matched with the cable tray (7), and the housing (11) is provided with an anti-detachment block (71), which is fixed to the opening end of the cable tray (7).

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