Portable fan

Abstract

The utility model provides a portable fan which comprises a fan body and a supporting unit suitable for supporting the fan body, and the fan body and the supporting unit are suitable for being detachably connected in a screwing mode around a screwing shaft. One of the fan body and the supporting unit comprises a first screwing part, the other one of the fan body and the supporting unit comprises a first locking part, and the first screwing part and the first locking part are connected in a screwing and clamping mode. One of the fan body and the supporting unit comprises a second screwing part, the other one of the fan body and the supporting unit comprises a second locking part, and the second screwing part abuts against the second locking part in a screwing mode. By arranging the first screwing part, the first locking part, the second screwing part and the second locking part, double locking in the circumferential direction and the axial direction of the screwing shaft is achieved, it is ensured that the fan body and the supporting unit can be tightly connected in various use scenes, and shaking and separation are avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fan technical field, especially, it relates to a portable fan. BACKGROUND

[0002] In the current portable fan field, the traditional product has many deficiencies in the connection mode and the supporting structure. The fan body and the supporting unit of many portable fans are fixedly connected, which occupies a large space, and the connection between the fan body and the supporting unit is not stable enough, which is prone to shaking or even separation during use, affecting the use experience. At the same time, the connection operation is often cumbersome, and the user needs to spend a lot of time for installation and disassembly. In addition, in terms of the supporting structure, the supporting legs of some portable fans cannot flexibly adapt to different use scenarios, and the stability is poor. Moreover, when the fan needs to be used as a handheld device, the existing supporting structure cannot be well converted into a form convenient for holding, and the function is relatively single. SUMMARY

[0003] In view of the defects of the prior art, the utility model aims at providing a portable fan to meet the needs of users.

[0004] To achieve the above-mentioned purpose, the utility model provides a portable fan, which comprises a fan body and a supporting unit adapted to support the fan body, and the fan body and the supporting unit are adapted to be detachably screwed around a screw shaft.

[0005] One of the fan body and the supporting unit comprises a first screwing part, the other of the fan body and the supporting unit comprises a first locking part, the first screwing part is screwed and clamped with the first locking part, and then the fan body and the supporting unit are locked along the circumference of the screw shaft.

[0006] One of the fan body and the supporting unit comprises a second screwing part, the other of the fan body and the supporting unit comprises a second locking part, the second screwing part is screwed and abuts against the second locking part, and then the fan body and the supporting unit are locked along the axial direction of the screw shaft.

[0007] As a preferred, the screw shaft is adapted to pass through the center of the fan body and the center of the supporting unit at the same time, and the number of the first screwing part and the second screwing part is the same.

[0008] As a preferred, one of the first screwing part and the first locking part comprises a limiting recess, one of the first screwing part and the first locking part comprises a limiting protrusion, the limiting protrusion is arranged along the radial direction of the screw shaft, and the limiting protrusion is clamped with the limiting recess.

[0009] As preferred: the fan body is formed with or connected to a screwing sleeve, the inner periphery of the screwing sleeve is circumferentially distributed with a plurality of the first locking portions, any two adjacent first locking portions have a first mounting area therebetween, the support unit comprises a screwing seat, the outer periphery of the screwing seat is circumferentially distributed with a plurality of the first screwing portions, the first screwing portions are adapted to be rotated to be clamped with the first locking portions after being aligned with the first mounting area.

[0010] As preferred: the fan body is formed with or connected to a second screwing cylinder, the outer periphery of the second screwing cylinder is circumferentially distributed with a plurality of the second screwing portions, the support unit comprises a screwing plate, the screwing plate rotates synchronously with the screwing seat, the screwing plate is arranged perpendicularly to the screwing shaft, the screwing plate is formed with a second locking portion and a second mounting area between two adjacent second locking portions, the second screwing portions are adapted to be rotated to be clamped with the second locking portions after being aligned with the second mounting area.

[0011] As preferred: the first locking portion comprises a first stop surface and a second stop surface arranged at the circumferential two ends thereof, the first screwing portion comprises a first matching surface and a second matching surface, the first stop surface is abutted with the first matching surface to prompt the first mounting area to be aligned with the first screwing portion, the second stop surface is abutted with the second stop surface to prompt the screwing to be in place.

[0012] As preferred: the first screwing portion is an arc-shaped plate, the first screwing portion is formed with a first screwing cylinder, two adjacent first screwing portions have a movable gap therebetween, one end of the first screwing portion is formed with a first mounting gap, the first mounting gap comprises the first matching surface, one end of the first screwing portion is formed with a first screwing groove, the first screwing groove comprises the limiting protrusion and the second matching surface.

[0013] When the first screwing portion is aligned with the first mounting area, the first locking portion enters the first mounting gap, when the first screwing portion is screwed with the first locking portion, the first locking portion slides into the first screwing groove of the adjacent first screwing portion through the first mounting gap.

[0014] As preferred: the outer peripheral wall of the screwing plate comprises uniformly spaced support arc surfaces and avoiding gaps, the support arc surfaces are adapted to be abutted with the inner peripheral wall of the first screwing portion, the avoiding gaps are arranged corresponding to the first screwing groove to provide deformation space therefor.

[0015] As preferred: the support unit comprises a first rotating seat and a second rotating seat, the first rotating seat is connected to the fan body, the first rotating seat comprises the screw sleeve, an end plate arranged at one end of the screw sleeve, and the second screw cylinder extending downward from the center of the end plate, the screw sleeve is coaxially arranged on the periphery of the second screw cylinder, and the second rotating seat comprises the screw seat and the screw plate which are assembled as a whole.

[0016] As preferred: the first rotating seat and the second rotating seat respectively comprise an indication mark, and the two indication marks are aligned to prompt that the installation is in place.

[0017] As preferred: the support unit comprises at least three supporting legs, one end of the supporting leg is pivotally connected to the second rotating seat to form a tripod, and at least part of the supporting leg is of a flexible structure, and the supporting leg can be converged to form a handle structure which can be held.

[0018] Further, the supporting leg comprises a main pipe body and pivot heads and supporting heads arranged at both ends of the main pipe body, the supporting head is spherical, and the main pipe body comprises one or more bendable metal inner cores and a sheath suitable for covering the metal inner core.

[0019] The fan provided by the utility model has the advantages of the following beneficial effects:

[0020] I. The screw connection design simplifies the connection and disassembly operation of the fan body and the support unit, the user only needs to align the corresponding parts and rotate, and the connection or separation operation can be completed, time and effort are saved, and the easy-to-use property of the product is improved.

[0021] II. The adaptability and functionality of the support unit are improved, the supporting leg is of a flexible structure and can be converged to form a handle, the stability requirement when serving as a supporting structure can be met, the supporting leg can be conveniently converted into a handheld mode when needed, different use scenarios are adapted to, and meanwhile, the spherical supporting head and the bendable metal inner core matched with the sheath enable the supporting leg to adapt to various supporting surfaces and enhance the stability. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 is a structural schematic view of a handheld oscillating fan provided by the utility model.

[0023] Fig. 2 is a cross-sectional schematic view of a handheld oscillating fan provided by the utility model.

[0024] Fig. 3 is an exploded schematic view of the fan main body provided by the utility model.

[0025] Fig. 4 is an exploded schematic view of the supporting unit provided by the utility model.

[0026] Fig. 5 is a structural schematic view of the lower shell provided by the utility model.

[0027] Fig. 6 is a bottom view of the cooperation between the lower shell and the rotation limiting piece provided by the utility model.

[0028] Fig. 7 is a structural schematic view of the first rotating seat provided by the utility model.

[0029] Fig. 8 is a structural schematic view of the first rotating seat provided by the utility model from another angle.

[0030] Fig. 9 is a structural schematic view of the second rotating seat provided by the utility model.

[0031] Fig. 10 is a top view of the second rotating seat provided by the utility model.

[0032] In the drawings: fan main body 1, main shell 11, main cavity 111, upper shell 112, first air inlet 1121, lower shell 113, second air inlet 1131, shaft hole 1132, shaft sleeve 1133, second convex ridge 1134, first range column 1135, second range groove 1136, limiting groove 1137, air outlet 114, fan assembly 12, fan shell 121, fan cavity 122, fan 123, driving motor 13, motor shaft 131, bearing 14, supporting unit 2, first rotating seat 3, auxiliary shell 31, third air inlet 311, screw sleeve 32, first locking part 321, limiting groove 3211, first stop surface 3212, second stop surface 3213, second synaptic 322, end plate 33, second screw cylinder 34, second screw part 341, shaft seat 35, rotation limiting piece 36, rotation limiting plate 361, first range groove 3611, first synaptic 3612, rotating shaft 362, first convex ridge 3621, mounting column 37, second rotating seat 4, screw seat 41, first screw part 411, movable gap 412, first mounting notch 4111, first matching surface 4112, first screw groove 4113, limiting protrusion 4114, second matching surface 4115, screw plate 42, second locking part 421, second mounting area 422, supporting arc surface 423, avoiding notch 424, supporting leg 5, main pipe body 51, pivoting head 52, supporting head 53, metal inner core 511, sheath 512. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described in detail below in combination with the drawings and specific embodiments.

[0034] Here, it also needs to be explained that, in order to avoid the utility model from being obscured by unnecessary details, only the structures and / or processing steps closely related to the scheme of the utility model are shown in the drawings, and other details not closely related to the utility model are omitted.

[0035] In addition, it also needs to be explained that the term "comprises", "includes" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0036] As Figures 1-10 The utility model relates to a portable fan, including fan main body 1 and the support unit 2 suitable for supporting fan main body 1, fan main body 1 includes main casing 11, the fan assembly 12 and drive motor 13 of being set in main casing 11, support unit 2 includes first rotating seat 3, second rotating seat 4 and three support legs 5, first rotating seat 3 is connected to main casing 11, first rotating seat 3, second rotating seat 4 are suitable for the detachable screw connection around screw shaft, screw shaft is suitable for passing through the center of fan main body 1 and the center of support unit 2 simultaneously, make the fan have the function of being convenient for carrying under the premise of guaranteeing support stability, facilitate user to move and use in different places, support leg 5 includes main pipe body 51 and the pivot head 52 and support head 53 of being set in both ends of main pipe body 51, pivot head 52 is pivoted to second rotating seat 4 and constitutes tripod, support head 53 is spherical, main pipe body 51 includes a bendable metal inner core 511 and the sheath 512 suitable for the cladding metal inner core 511, support leg 5 can be converged and form the handle structure that can be held, spherical support head 53 and bendable metal inner core 511 make support leg 5 can better adhere to various uneven support surfaces, further enhance the stability of support.

[0037] The first rotating seat 3 comprises a secondary housing 31, a screw sleeve 32 arranged inside the secondary housing 31, an end plate 33 arranged at one end of the screw sleeve 32, and a second screw cylinder 34 extending downward from the center of the end plate 33. The second rotating seat 4 comprises a screw seat 41 and a screw plate 42 which are assembled as a whole. The screw sleeve 32 is coaxially arranged on the periphery of the second screw cylinder 34. The inner periphery of the screw sleeve 32 is circumferentially uniformly provided with a plurality of first locking portions 321, and any two adjacent first locking portions 321 have a first mounting area therebetween. The outer periphery of the screw seat 41 is circumferentially uniformly provided with a plurality of first screwing portions 411, which are adapted to be rotated to be clamped with the first locking portions 321 after being aligned with the first mounting area. The outer periphery of the second screw cylinder 34 is circumferentially uniformly provided with a plurality of second screwing portions 341, and the number of the first screwing portions 411 is the same as that of the second screwing portions 341. The screw plate 42 rotates synchronously with the screw seat 41, and the screw plate 42 is arranged perpendicularly to the screw shaft. The screw plate 42 is formed with second locking portions 421 and second mounting areas 422 between adjacent two second locking portions 421, and the second screwing portions 341 are adapted to be rotated to be clamped with the second locking portions 421 after being aligned with the second mounting areas 422. This double locking structure ensures that the connection between the fan body 1 and the supporting unit 2 is stable and reliable during use of the fan, and even when subjected to external force impact or movement, the connection will not be loose or separated, thereby ensuring the safety of the fan in use.

[0038] In the present embodiment, the first locking portion 321 comprises a limiting groove 3211 and first and second stop faces 3212 and 3213 arranged at the circumferential two ends thereof. The first screwing portion 411 is an arc-shaped plate, and the first screwing portion 411 is formed with a first screwing cylinder. Adjacent two first screwing portions 411 have a movable gap 412 therebetween, and one end of the first screwing portion 411 is formed with a first mounting gap 4111 comprising a first matching face 4112. One end of the first screwing portion 411 is formed with a first screwing groove 4113 comprising a limiting protrusion 4114 and a second matching face 4115, and the limiting protrusion 4114 is arranged along the radial direction of the screw shaft. The outer peripheral wall of the screw plate 42 comprises uniformly spaced support arc faces 423 and avoiding gaps 424, the support arc faces 423 are adapted to abut against the inner peripheral wall of the first screwing portion 321, and the avoiding gaps 424 are arranged corresponding to the first screwing groove 4113 to provide a deformation space therefor. When the first screwing portion 411 is aligned with the first mounting area, the first locking portion 321 enters the first mounting gap 4111, and the first stop face 3212 abuts against the first matching face 4112. When the first screwing portion 411 is screwed with the first locking portion 321, the first locking portion 321 slides into the first screwing groove 4113 of the adjacent first screwing portion 411 through the first mounting gap 4111, and the first locking portion 321 and the first screwing groove 4113 are also adapted to limit in the axial direction of the screw shaft, the limiting protrusion 4114 is clamped with the limiting groove 3211, and the second stop face 3213 abuts against the second stop face 3213 to prompt screwing in place.

[0039] In the embodiment, the first rotating seat 3 and the second rotating seat 4 each comprises an indication mark, and the two indication marks are aligned to indicate that the installation is in place.

[0040] The first rotating seat 3 further comprises a shaft seat 35 extending upward from the center of the end plate 33 and a rotation limiting piece 36. The rotation limiting piece 36 comprises a rotation limiting plate 361 and a rotating shaft 362 extending downward from the center of the rotation limiting plate 361, and the rotation limiting plate 361 is arranged inside the main shell 11 and is fixedly assembled above the end plate 33 through a mounting column 37. The main shell 11 comprises a shaft hole 1132 for the rotating shaft 362 to extend out, and the rotating shaft 362 is in interference fit with the shaft seat 35. The driving motor 13 comprises a motor shaft 131, which is tightly connected to the shaft seat 35, and the rotating shaft 362 is coaxially arranged with the motor shaft 131. The bottom surface of the main shell 11 is centrally downwardly extended to form a shaft sleeve 1133, and a bearing 14 is arranged between the rotating shaft 362 and the shaft sleeve 1133. The driving motor 13 is adapted to drive the fan body 1 to rotate relative to the support unit 2.

[0041] Further, the bearing 14 comprises an inner ring and an outer ring that can rotate relative to each other, the outer periphery of the rotating shaft 362 is provided with a plurality of first convex beads 3621, the first convex beads 3621 are tightly fitted with the inner ring, the inner periphery of the shaft sleeve 1133 is provided with a plurality of second convex beads 1134, the second convex beads 1134 are tightly fitted with the outer ring, and the first convex beads 3621 and the second convex beads 1134 are arranged parallel to the axial direction of the rotating shaft 362 / motor shaft 131. The close and precise fit greatly enhances the stability of the fan body 1 when rotating, effectively reducing the shaking and jamming phenomenon.

[0042] In the embodiment, the rotation limiting plate 361 comprises two symmetrically arranged first range grooves 3611, which are arc-shaped grooves with an arc angle of The main shell 11 comprises a first range column 1135 adapted to extend into the first range groove 3611 and a second range groove 1136 adapted to allow the mounting column 37 to pass through, and the arc angle of the second range groove 1136 is equal to that of the first range groove 3611. When the fan body 1 and the support unit 2 are in the initial position, the first range column 1135 is located in the center of the first range groove 3611, and the mounting column 37 is located in the center of the first range groove. By designing a reasonable rotation limiting structure, the rotating angle of the fan body 1 can be accurately limited, meeting the diversified needs of users for the blowing angle in different scenarios, and making the adjustment of the rotating angle more convenient and accurate. The radial dimension of the rotation limiting plate 361 is not less than half of the radial dimension of the secondary shell 31, which effectively balances the force generated by the change of the center of gravity of the fan body 1 during the shaking rotation of the fan body 1 relative to the support unit 2, ensures the stability of the overall structure of the fan, and reduces the shaking phenomenon caused by the center of gravity.

[0043] In the embodiment, the main shell 11 is formed with a main cavity 111, the fan assembly 12 comprises a fan shell 121 and a fan 123, the fan 123 is arranged in a fan cavity 122, the motor is arranged below the fan assembly 12, the main shell 11 comprises a first air inlet 1121 arranged at the top end thereof, a second air inlet 1131 arranged at the bottom end thereof and an air outlet 114 arranged at the front side thereof, the fan shell 121 is formed with the fan cavity 122 adapted to communicate with the air inlets and the air outlet 114 respectively. The auxiliary shell 31 is adapted to cover the second air inlet 1131, the auxiliary shell 31 is in the shape of a circular truncated cone, the auxiliary shell 31 is formed with a plurality of third air inlets 311 adapted to communicate with the second air inlet 1131. A battery (not shown in the figure) adapted to supply power to the fan 123 and the driving motor is further arranged in the main cavity 111.

[0044] In the embodiment, the lower shell 113 is further formed with a limiting groove 1137 towards the side of the first rotating seat 3, the edge of the auxiliary shell 31 is adapted to extend into the limiting groove 1137, and the edge of the auxiliary shell 31 can rotate in the limiting groove 1137, so as to reduce the disturbance of the airflow to the auxiliary shell 31.

[0045] The above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application.

Claims

1. A portable fan, comprising a fan body and a support unit adapted to support the fan body, characterized in that, The fan body and the support unit are adapted to be detachably screwed together around a screw shaft. One of the fan body and the support unit includes a first engaging portion, and the other of the fan body and the support unit includes a first locking portion. The first engaging portion and the first locking portion engage and lock together, thereby locking the fan body and the support unit circumferentially along the engaging axis. One of the fan body and the support unit includes a second engaging portion, and the other of the fan body and the support unit includes a second locking portion. The second engaging portion and the second locking portion engage and abut against each other, thereby locking the fan body and the support unit along the axial direction of the engaging shaft.

2. A portable fan according to claim 1, characterized in that, The engagement shaft is adapted to pass through the center of the fan body and the center of the support unit simultaneously, and the number of the first engagement portion and the second engagement portion are the same.

3. A portable fan according to claim 1, characterized in that, One of the first engaging portion and the first locking portion includes a limiting groove, and the other of the first engaging portion and the first locking portion includes a limiting protrusion. The limiting protrusion is arranged radially along the engaging shaft, and the limiting protrusion engages with the limiting groove.

4. A portable fan according to claim 3, characterized in that, The fan body is formed or connected to a swivel sleeve. The inner circumference of the swivel sleeve is evenly distributed with a plurality of first locking portions. There is a first mounting area between any two adjacent first locking portions. The support unit includes a swivel seat. The outer circumference of the swivel seat is evenly distributed with a plurality of first swivel portions. The first swivel portions are adapted to be rotated to engage with the first locking portions after being aligned with the first mounting area.

5. A portable fan according to claim 4, characterized in that, The fan body is formed or connected to a second engagement cylinder. A plurality of second engagement portions are evenly distributed around the outer periphery of the second engagement cylinder. The support unit includes an engagement plate. The engagement plate rotates synchronously with the engagement seat. The engagement plate is arranged perpendicular to the engagement axis. The engagement plate forms a second locking portion and a second mounting area located between two adjacent second locking portions. The second engagement portion is adapted to be rotated to engage with the second locking portion after aligning with the second mounting area.

6. A portable fan according to claim 5, characterized in that, The first locking part includes a first stop surface and a second stop surface disposed at both ends of its circumference. The first engaging part includes a first mating surface and a second mating surface. The first stop surface abuts against the first mating surface to indicate that the first mounting area is aligned with the first engaging part. The second stop surface abuts against the second stop surface to indicate that the engagement is complete.

7. A portable fan according to claim 6, characterized in that, The first engagement part is an arc-shaped plate, and the first engagement part surrounds and forms a first engagement cylinder. There is an movable gap between two adjacent first engagement parts. A first installation notch is formed at one end of the first engagement part. The first installation notch includes the first mating surface. A first engagement groove is formed at one end of the first engagement part. The first engagement groove includes the limiting protrusion and the second mating surface. When the first engaging portion is aligned with the first mounting area, the first locking portion enters the first mounting notch. When the first engaging portion engages with the first locking portion, the first locking portion slides through the first mounting notch into the first engaging groove of the adjacent first engaging portion.

8. A portable fan according to claim 7, characterized in that, The outer peripheral wall of the swivel plate includes evenly spaced supporting arc surfaces and clearance notches. The supporting arc surfaces are adapted to abut against the inner peripheral wall of the first swivel part, and the clearance notches are configured to provide deformation space for the first swivel groove.

9. A portable fan according to claim 8, characterized in that, The support unit includes a first rotating seat and a second rotating seat. The first rotating seat is connected to the fan body. The first rotating seat includes a screw-fit sleeve, an end plate disposed at one end of the screw-fit sleeve, and a second screw-fit cylinder extending downward from the center of the end plate. The screw-fit sleeve is coaxially disposed around the periphery of the second screw-fit cylinder. The second rotating seat includes the screw-fit seat and the screw-fit plate assembled as a whole.

10. A portable fan according to claim 9, characterized in that, The support unit includes at least three legs, one end of which is pivotally connected to the second rotating seat to form a tripod. At least some of the legs are flexible structures, and the legs can be closed to form a handle structure for gripping.

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