Portable fan

Abstract

The embodiment of the utility model discloses a portable fan which comprises an air cylinder part, a switching structure, a handle and a connecting structure, and the air cylinder part comprises a cylinder body and a fan arranged in the cylinder body; the adapter structure is fixedly connected to the peripheral wall of the barrel, and the end face, deviating from the barrel, of the adapter structure forms a first inclined face; the end face, facing the switching structure, of the handle forms a second inclined face attached to the first inclined face in a matched mode. The connecting structure comprises a connecting piece and an annular wall which are connected with each other, one end of the connecting piece is fixedly connected to the switching structure, the other end of the connecting piece can be rotatably hung to the handle along the second inclined surface, and the annular wall penetrates through the first inclined surface and the second inclined surface and extends in the normal directions of the first inclined surface and the second inclined surface; and the switching structure can rotate along the plane direction of the second inclined plane by taking the annular wall as a rotating center, so that the air duct part can rotate until the axial direction of the duct body is consistent with or vertical to the extending direction of the handle. According to the portable fan, the rotating shaft part can be prevented from being exposed.

Description

Technical Field

[0001] The present application relates to the technical field of small fans, and in particular to a portable fan. Background Art

[0002] With the accelerating pace of modern life, people are increasingly demanding portable and multifunctional products. During the scorching summer heat, portable handheld fans, compact and lightweight, have become a travel essential for many. To meet the needs of diverse usage scenarios, handheld fans feature a foldable fan head relative to the handle, significantly reducing the overall size of the fan when not in use, making it easier for users to store and carry.

[0003] However, when the fan head is folded relative to the handle, the shaft is exposed. This exposed shaft can pose a safety hazard to users, especially children, when the fan is folded. Furthermore, the exposed shaft can damage the overall aesthetics and coordination of the fan product, making the product appear less refined or uniform visually.

[0004] The above content is only used to assist in understanding the technical solution of the utility model and does not constitute an admission that the above content is prior art. Utility Model Content

[0005] In view of the above problems, the present invention proposes a portable fan, which aims to solve the technical problem of the exposed shaft portion of the portable folding fan.

[0006] To achieve the above-mentioned purpose, the portable fan proposed by the present invention comprises:

[0007] The air cylinder portion includes a cylinder body and a fan arranged in the cylinder body, and an air inlet and an air outlet are respectively formed at two axial ends of the cylinder body;

[0008] A transition structure is fixedly connected to the outer peripheral wall of the cylinder, and the end surface of the transition structure facing away from the cylinder forms a first inclined surface;

[0009] a handle connected to an end of the adapter structure facing away from the barrel, wherein the end surface of the handle facing the adapter structure forms a second inclined surface that fits in place with the first inclined surface; and

[0010] A connecting structure is provided at the first inclined surface and the second inclined surface, and the connecting structure includes a connecting member and an annular wall connected to each other. One end of the connecting member is fixedly connected to the adapter structure, and the other end can be rotatably hung on the handle along the second inclined surface. The annular wall passes through the first inclined surface and the second inclined surface, and extends along the normal direction of the first inclined surface and the second inclined surface; the adapter structure can rotate along the plane direction of the second inclined surface with the annular wall as the rotation center, so that the wind cylinder part can be rotated until the axial direction of the cylinder body is consistent with or perpendicular to the extension direction of the handle.

[0011] In one embodiment, the connecting member includes a fixing portion provided on the inner periphery of the annular wall and a hanging ring provided on the outer periphery of the annular wall, the fixing portion is fixedly connected to the adapter structure, and the hanging ring can be rotatably hung on the inner wall of the handle around the axis of the annular wall.

[0012] In one embodiment, the portable fan further comprises a circuit board disposed in the adapter structure and a power supply unit disposed in the handle;

[0013] The transition structure includes a first side wall and a second side wall that are opposite to each other in the axial direction of the cylinder, the length of the first side wall is greater than the length of the second side wall, and the circuit board is fixed to the first side wall;

[0014] The adapter structure is electrically connected to the power supply unit via a wire, and the fixing portion is provided with a wire hole for the wire to pass through.

[0015] In one embodiment, the fixing portion includes two mounting platforms spaced apart in the radial direction of the cylinder, two mounting columns are provided in the adapter structure corresponding to the two mounting platforms, and the mounting columns are fixedly connected to the mounting platforms; the wire hole is provided between the two mounting platforms.

[0016] In one embodiment, a positioning protrusion is provided on the second inclined surface, and an arc-shaped groove extending circumferentially around the annular wall is opened on the periphery of the annular wall on the first inclined surface, and the arc-shaped groove extends from one side of the cylinder to the other side in the radial direction of the cylinder. The first inclined surface is provided with elastic clamping arms on both sides of the cylinder in the radial direction, and the elastic clamping arms form a part of the groove wall of the arc-shaped groove, and the positioning protrusion is adapted to be clamped to the elastic clamping arms.

[0017] In one embodiment, the adapter structure is provided with a hanging rope portion on both side walls in the radial direction of the cylinder; when the wind cylinder portion is rotated until the axial direction of the cylinder is consistent with the extension direction of the handle, the air outlet is located on the side away from the handle, and the ratio of the torque of the wind cylinder portion at the hanging rope portion to the torque of the handle at the hanging rope portion is greater than or equal to 0.9 and less than or equal to 1.1.

[0018] In one embodiment, the handle includes a first shell, a second shell and a first inclined wall, the first inclined wall is fixedly connected to one end of the first shell adjacent to the adapter structure, and the second inclined surface is formed on the first inclined wall; when the wind cylinder portion is rotated until the axial direction of the cylinder body is perpendicular to the extension direction of the handle, the second shell is located below the first inclined wall and is spliced ​​with the first shell in the axial direction of the cylinder body.

[0019] In one embodiment, when the air cylinder portion is rotated until the axial direction of the cylinder body is perpendicular to the extension direction of the handle, the width of the cross section of the handle in the axial direction of the cylinder body is greater than the width in the radial direction; and the handle further includes an anti-slip sleeve, which is provided on the outer periphery of the first shell and the second shell.

[0020] In one embodiment, the first shell and the second shell are enclosed to form a downward opening, and the handle further includes a bottom cover, which covers the opening and is fixed to the first shell and the second shell, and is spliced ​​with the anti-slip sleeve in the upper and lower directions.

[0021] In one embodiment, the transition structure includes a third shell, a fourth shell, a second inclined wall and a mounting core, the second inclined wall is connected to the end of the third shell away from the cylinder, and the first inclined surface is formed on the second inclined wall; the third shell and the fourth shell are spliced ​​in the axial direction of the cylinder, and the mounting core is arranged in the space enclosed by the third shell, the fourth shell and the second inclined wall, one end of the mounting core is fixedly connected to the cylinder, and the other end is fixedly connected to the connecting structure; the mounting core is provided with a hanging rope portion that is partially exposed and clamped between the first shell and the second shell on both sides of the radial direction of the cylinder.

[0022] In one embodiment, the inner wall of the cylinder is fixedly connected to a plurality of air guide blades arranged at intervals around its circumference, and the wind cylinder portion also includes a flow guide member fixed in the cylinder, and the flow guide member is provided with a plurality of flow guide blades arranged at intervals around the circumference of the cylinder; the fan, the plurality of the air guide blades and the flow guide member are arranged in sequence in the air outlet direction of the fan; the spiral extension direction of the plurality of the air guide blades is opposite to the spiral extension direction of the plurality of the guide blades.

[0023] The portable fan of the present invention uses a cylinder to form an air duct and accommodate a blower, which can effectively prevent hair from being caught in the blower and improve the safety of the portable fan. By providing a transfer structure on the outer peripheral wall of the cylinder, the end face of the transfer structure forms a first inclined surface, and the end face of the handle forms a second inclined surface. The connection structure includes a connecting member and an annular wall that are connected to each other. One end of the connecting member is fixedly connected to the transfer structure, and the other end can be rotatably connected to the handle along the second inclined surface. The annular wall passes through the first and second inclined surfaces and extends along the normal direction of the first and second inclined surfaces. In this way, the transfer structure and the handle's rotating shaft portion (annular wall) are hidden within the transfer structure and the handle. The transfer structure and the handle are twisted together through the first and second inclined surfaces to achieve twisting and folding of the air cylinder relative to the handle.

[0024] This folding method effectively prevents the shaft from being exposed, thereby preventing the user from being pinched during folding. It also ensures the overall aesthetics and coordination of the portable fan, making the product appear more refined or unified visually. When the fan cylinder is rotated so that the axial direction of the cylinder is perpendicular to the extension direction of the handle, the portable fan is in an unfolded state, making it more convenient for the user to hold and use. When the fan cylinder is rotated so that the axial direction of the cylinder is aligned with the extension direction of the handle, the portable fan is in a folded state, which is convenient for the user to carry and store, and can also be placed directly on a table for use without the need for an additional stand for the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 Shows a schematic structural diagram of an embodiment of the portable fan of the utility model;

[0027] Figure 2 for Figure 1 Exploded view of a portable fan;

[0028] Figure 3 for Figure 2 A schematic diagram of the structure of the portable fan in another direction;

[0029] Figure 4 for Figure 1 A cross-sectional view of a portable fan;

[0030] Figure 5 for Figure 4 A partial enlarged view of point A in the middle;

[0031] Figure 6 This is a schematic diagram of the structure of the portable fan of the utility model after folding;

[0032] Figure 7 for Figure 6 A cross-sectional view of a portable fan;

[0033] Figure 8 for Figure 7 A partial enlarged view of point B in the middle;

[0034] Figure 9 This is a structural diagram of an embodiment of the connection structure of the utility model;

[0035] Figure 10 This is a structural diagram of an embodiment of the transfer structure of the utility model;

[0036] Figure 11 This is a structural diagram of an embodiment of a handle of the utility model;

[0037] Figure 12 for Figure 11 Exploded view of the middle handle;

[0038] Figure 13 This is a schematic diagram of the exploded structure of the transfer structure and the cylinder of the utility model;

[0039] Figure 14 This is an exploded view of the air duct portion of the present invention.

[0040] Description of Figure Numbers:

[0041] Label name Label name Label name 100 Air duct part 110 Cylinder 111 air inlet 112 air outlet 113 Air guide blades 120 fan 130 guide piece 131 guide vanes 200 Transfer structure 210 First slope 211 Arc card slot 212 Elastic clamp arm 220 First side wall 230 Second side wall 240 Mounting Column 250 Lanyard 260 The third shell 270 The fourth shell 280 Second inclined wall 290 Install the core 300 handle 310 second slope 311 Positioning card convex 320 First Shell 330 Second Shell 340 First inclined wall 350 Anti-slip cover 360 bottom cover 400 Connection structure 410 Connectors 411 Fixed part 412 Wire hole 413 Mounting table 414 Mounting ring 420 Annular wall 500 circuit boards 600 Power supply unit

[0042] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0044] It should be noted that if the embodiment of the utility model has directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, if the certain posture changes, the directionality indication also changes accordingly.

[0045] In addition, if the embodiment of the utility model has the description of "first", "second" and the like, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme.

[0046] The utility model provides a portable fan.

[0047] In the embodiment of the utility model, please refer to Figure 1-9 The portable fan comprises a duct part 100, an adapter structure 200, a handle 300 and a connecting structure 400.

[0048] The duct part 100 comprises a cylinder body 110 and a fan 120 arranged in the cylinder body 110, and the two ends of the cylinder body 110 in the axial direction are respectively formed with an air inlet 111 and an air outlet 112; the adapter structure 200 is fixedly connected to the outer peripheral wall of the cylinder body 110, and the end face of the adapter structure 200 away from the cylinder body 110 forms a first inclined surface 210.

[0049] The handle 300 is connected to one end of the adapter structure 200 away from the cylinder body 110, and the end face of the handle 300 facing the adapter structure 200 forms a second inclined surface 310 adapted to the first inclined surface 210.

[0050] The connecting structure 400 is arranged at the first inclined surface 210 and the second inclined surface 310, and the connecting structure 400 comprises a connecting piece 410 and an annular wall 420 connected to each other, one end of the connecting piece 410 is fixedly connected to the adapter structure 200, the other end is rotatably connected to the handle 300 along the second inclined surface 310, the annular wall 420 penetrates the first inclined surface 210 and the second inclined surface 310, and extends along the normal direction of the first inclined surface 210 and the second inclined surface 310; the adapter structure 200 can rotate along the plane direction of the second inclined surface 310 with the annular wall 420 as the rotation center, so that the duct part 100 can be rotated to be consistent or perpendicular to the extension direction of the handle 300 in the axial direction of the cylinder body 110.

[0051] In this embodiment, the cylinder 110 is enclosed to form an air duct, and the fan 120 is installed in the air duct. The fan 120 is used to drive the air flow from the air inlet 111 into the air duct of the cylinder 110 and blown out through the air outlet 112. Usually, the cylinder 110 is configured as a cylinder with a circular cross-section. The fan 120 includes a motor and a wind wheel connected to the output shaft of the motor. The motor is fixedly installed in the cylinder 110, and the motor is used to drive the wind wheel to rotate. By arranging the fan 120 in the cylinder 110, the present application can effectively prevent hair from being caught in the fan 120 compared to the method of installing the fan 120 in a mesh cover, thereby improving the safety of the portable fan.

[0052] The adapter structure 200 is fixedly connected to the outer peripheral wall of the barrel 110. To improve structural strength, the outer shell of the adapter structure 200 can be integrally formed with the barrel 110. When the wind cylinder portion 100 is rotated so that the axial direction of the barrel 110 is perpendicular to the extension direction of the handle 300, that is, when the portable fan is not folded, in order to ensure overall consistency of appearance, the outer contour shape of the adapter structure 200 can be made the same as the outer contour shape of the handle 300, and the outer peripheral surface of the adapter structure 200 can be aligned with the outer peripheral surface of the handle 300. In this way, when the portable fan is not folded, the adapter structure 200 and the handle 300 form a handheld portion with a consistent appearance.

[0053] The handle 300 is used for the user to grasp and hold. The cross-sectional shape of the handle 300 can be many, such as circular, elliptical, runway-shaped, etc., which can be selected and designed according to actual needs and are not specifically limited here. The end face of the adapter structure 200 forms a first bevel 210, and the end face of the handle 300 forms a second bevel 310 adapted to the first bevel 210, then the inclination angles of the first bevel 210 and the second bevel 310 are the same. In order to make the wind cylinder part 100 rotatable until the axial direction of the cylinder body 110 is consistent with or perpendicular to the extension direction of the handle 300, specifically, the angle between the first bevel 210 and the axis of the cylinder body 110 is 45 degrees. In this way, after the adapter structure 200 is rotated 180 degrees relative to the handle 300, the adapter structure 200 can be rotated to extend perpendicularly or in the same direction as the handle 300. As Figure 1 As shown, when the portable fan is in the unfolded state, the adapter structure 200 and the handle 300 extend in the same direction, and the axial direction of the wind tube portion 100 is perpendicular to the extension direction of the handle 300. Figure 6 As shown, when the portable fan is in the twisted and folded state, the adapter structure 200 is perpendicular to the handle 300 , and the axial direction of the wind tube portion 100 is consistent with the extending direction of the handle 300 .

[0054] To improve structural strength, the connector 410 is integrally formed with the annular wall 420. The annular wall 420 is specifically annular. The annular wall 420 passes through the first inclined surface 210 and the second inclined surface 310 and extends along the normal direction of the first inclined surface 210 and the second inclined surface 310. The annular wall 420 is used to limit the rotation of the adapter structure 200 and the handle 300 in a circumferential direction, so that the two rotate only around the outer circumference of the annular wall 420. In other words, the annular wall 420 constitutes the rotation axis for the relative rotation of the adapter structure 200 and the handle 300. One end of the connector 410 is fixed to the adapter structure 200, and the other end is hooked to the handle 300. This prevents the adapter structure 200 and the handle 300 from separating from each other while allowing the adapter structure 200 to rotate relative to the handle 300 around the annular wall 420. The connector 410 and the adapter structure 200 can be fixedly connected by screws, snaps, etc. The other end of the connecting piece 410 is connected to the handle 300. Specifically, an axial hole for the annular wall 420 to pass through is opened on the first inclined surface 210. The connecting piece 410 extends into the handle 300 through the axial hole and is connected to the outer part of the axial hole. Without affecting the rotation, it can limit the separation of the adapter structure 200 and the handle 300 from each other in the normal direction of the first inclined surface 210 and the second inclined surface 310.

[0055] The portable fan of the present invention uses the cylinder 110 to form an air duct and accommodate the fan 120, which can effectively prevent hair from being caught in the fan 120, thereby improving the safety of the portable fan. By arranging a transfer structure 200 on the outer peripheral wall of the cylinder 110, the end face of the transfer structure 200 forms a first inclined surface 210, and the end face of the handle 300 forms a second inclined surface 310. The connecting structure 400 includes a connecting member 410 and an annular wall 420 that are connected to each other. One end of the connecting member 410 is fixedly connected to the transfer structure 200, and the other end can be rotatably hung on the handle 300 along the second inclined surface 310. The annular wall 420 passes through the first inclined surface 210 and the second inclined surface 310, and extends along the normal direction of the first inclined surface 210 and the second inclined surface 310. In this way, the rotating shaft portion (annular wall 420) of the transfer structure 200 and the handle 300 is hidden in the transfer structure 200 and the handle 300. The transfer structure 200 and the handle 300 are twisted together through the first inclined surface 210 and the second inclined surface 310 to realize the twisting and folding of the wind tube portion 100 relative to the handle 300.

[0056] This folding method can effectively prevent the shaft from being exposed, thereby preventing the user from being pinched during folding. At the same time, it can also ensure the overall aesthetics and coordination of the portable fan, making the product appear more refined or unified visually. When the wind cylinder portion 100 is rotated so that the axial direction of the cylinder body 110 is perpendicular to the extension direction of the handle 300, the portable fan is in an unfolded state, which is more convenient for the user to hold and use. When the wind cylinder portion 100 is rotated so that the axial direction of the cylinder body 110 is consistent with the extension direction of the handle 300, the portable fan is in a folded state, which is convenient for the user to carry and store on the one hand, and convenient for the portable fan to be placed directly on a table for use on the other hand, without the need for an additional placement stand for the fan.

[0057] Specifically, if Figure 2-5 、 Figures 7 to 9 As shown, the connecting member 410 includes a fixing portion 411 provided on the inner periphery of the annular wall 420 and a hanging ring 414 provided on the outer periphery of the annular wall 420 . The fixing portion 411 is fixedly connected to the adapter structure 200 , and the hanging ring 414 can be rotatably hung on the inner wall of the handle 300 around the axis of the annular wall 420 .

[0058] The connector 410 is fixedly connected to the adapter structure 200 via the fixing portion 411, and the hooking portion of the connector 410 abuts the inner wall of the handle 300. The connector 410 maintains contact between the first inclined surface 210 and the second inclined surface 310, preventing them from separating. The fixing portion 411 is located within the annular wall 420, further facilitating connection between the fixing portion 411 and the interior of the adapter structure 200. The hooking ring 414 is located on the periphery of the annular wall 420, allowing it to be hooked to a location within the handle 300 surrounding the periphery of the annular wall 420. During installation, the entire connecting member 410 is assembled from the inside of the handle 300, the annular wall 420 and the fixing portion 411 are extended out of the first inclined surface 210 of the handle 300, the hanging ring 414 is abutted against the inner wall of the handle 300, and then the fixing portion 411 and the adapter structure 200 are connected to realize the assembly of the adapter structure 200, the handle 300 and the connecting structure 400. This assembly method is simple, reliable and easy to operate.

[0059] In one embodiment, please refer to Figure 4 、 Figure 5 、 Figure 7 and Figure 9 , the portable fan further includes a circuit board 500 disposed in the adapter structure 200 and a power supply unit 600 disposed in the handle 300;

[0060] The adapter structure 200 includes a first side wall 220 and a second side wall 230 that are opposite to each other in the axial direction of the cylinder 110. The length of the first side wall 220 is greater than that of the second side wall 230. The circuit board 500 is fixed to the first side wall 220.

[0061] The adapter structure 200 is electrically connected with the power supply unit 600 through wires, and the fixing portion 411 is provided with a wire hole 412 for the wires to pass through.

[0062] In the embodiment, the power supply unit 600 is specifically a battery. The power supply unit 600 is electrically connected with the circuit board 500 through wires, and the fan 120 is electrically connected with the circuit board 500, so that the fan 120 is powered by the power supply unit 600, and the fan 120 can be controlled, such as being turned on or off, or the wind speed being adjusted, through the circuit board 500. Since the fixing portion 411 is located within the annular wall 420, the wire hole 412 for the wires to pass through is arranged on the fixing portion 411, so that the wires can be prevented from being wound when the barrel portion 100 is folded and twisted relative to the handle 300, and the wires can be prevented from being excessively pulled and damaged. Since the end face of the adapter structure 200 forms the first inclined surface 210, the outer side wall of the adapter structure 200 is necessarily long on one side and short on the other side. By fixing the circuit board 500 on the longer first side wall 220 of the adapter structure 200, compared with arranging the circuit board 500 at the shorter second side wall 230, the space on the first side wall 220 can be fully utilized to accommodate the circuit board 500, so that the overall structure is more compact, the length of the entire adapter structure 200 can be shortened as much as possible, and the entire portable fan is more compact. Further, the operation button is arranged on the first side wall 220 and abuts against the circuit board 500. In this way, the button is also located on the longer first side wall 220.

[0063] Further, as shown in Figure 2-5 、 Figure 9 and Figure 10 , the fixing portion 411 includes two mounting tables 413 arranged at intervals in the radial direction of the barrel 110, and the adapter structure 200 is provided with two mounting columns 240 corresponding to the two mounting tables 413, and the mounting columns 240 are fixedly connected with the mounting tables 413; the wire hole 412 is arranged between the two mounting tables 413. The mounting table 413 and the mounting column 240 can be fixedly connected through screws. By arranging two mounting tables 413 arranged at intervals in the radial direction of the barrel 110 and fixedly connecting the mounting columns 240 in the adapter structure 200, the connection stability of the adapter structure 200 and the connecting structure 400 can be further improved. By arranging the wire hole 412 between the two mounting tables 413, the wire hole 412 can be located at the axial position of the annular wall 420, so that the wires can be further prevented from being pulled when the barrel portion 100 is folded and twisted relative to the handle 300.

[0064] In an embodiment, please refer to Figure 2 、 Figure 3 、 Figure 10-13A positioning protrusion 311 is provided on the second inclined surface 310, and an arc-shaped groove 211 extending circumferentially around the annular wall 420 is opened on the outer periphery of the first inclined surface 210. The arc-shaped groove 211 extends from one side of the cylinder 110 to the other side in the radial direction. The first inclined surface 210 is provided with elastic clamping arms 212 on both sides of the cylinder 110 in the radial direction. The elastic clamping arms 212 form a part of the groove wall of the arc-shaped groove 211, and the positioning protrusion 311 is adapted to be clamped to the elastic clamping arms 212.

[0065] In this embodiment, by providing an arcuate slot 211, the rotation angle of the adapter structure 200 relative to the handle 300 can be limited, preventing excessive twisting that would cause the internal wire structure to be pulled and broken. Specifically, the circular angle corresponding to the arcuate slot 211 is approximately 180 degrees, that is, the rotation limit position is when the wind tube portion 100 rotates until the axial direction of the cylinder body 110 is aligned with or perpendicular to the extension direction of the handle 300. Moreover, by making the arcuate slot 211 surround the outer periphery of the annular wall 420 and providing a positioning protrusion 311 on the second inclined surface 310, the sliding of the positioning protrusion 311 within the arcuate slot 211 can further ensure the relative rotation accuracy of the first inclined surface 210 and the second inclined surface 310, and make the entire positioning and engaging structure simpler. The sidewall of the elastic arm 212 forms part of the arcuate slot 211. When the positioning protrusion 311 slides within the arcuate slot 211 until it engages the elastic arm 212, it locks the adapter structure 200 and the handle 300, maintaining the entire fan tube 100 and the adapter structure 200 in position relative to the handle 300. By twisting the adapter structure 200 to disengage the positioning protrusion 311 from the elastic arm 212, the portable fan can be switched between different modes.

[0066] In one embodiment, if Figure 1-3 、 Figure 6 、 Figure 10 As shown, the adapter structure 200 is provided with a hanging rope portion 250 on both side walls in the radial direction of the cylinder 110; when the air cylinder portion 100 is rotated until the axial direction of the cylinder 110 is consistent with the extension direction of the handle 300, the air outlet 112 is located on the side away from the handle 300, and the ratio of the torque of the air cylinder portion 100 at the hanging rope portion 250 to the torque of the handle 300 at the hanging rope portion 250 is greater than or equal to 0.9 and less than or equal to 1.1.

[0067] In this embodiment, by providing the hanging rope portion 250, when the wind cylinder portion 100 is rotated until the axial direction of the cylinder body 110 is consistent with the extension direction of the handle 300 (when the portable fan is in a folded state), the portable fan can be hung around the user's neck for use, freeing the user's hands. It is understandable that after the portable fan is folded and hung around the neck for use, the air outlet 112 of the wind cylinder portion 100 faces upward to blow air on the user's face. The ratio of the torque of the wind cylinder portion 100 at the hanging rope portion 250 to the torque of the handle 300 at the hanging rope portion 250 can specifically be 0.9, 0.95, 1, 1.1, etc. By making the ratio of the torque of the wind cylinder part 100 at the hanging rope part 250 to the torque of the handle 300 at the hanging rope part 250 greater than or equal to 0.9 and less than or equal to 1.1, that is, the torque of the wind cylinder part 100 at the hanging rope part 250 is basically the same as the torque of the handle 300 at the hanging rope part 250. In this way, when the portable fan is hung around the neck, the weight balance of the wind cylinder part 100 and the handle 300 side can be achieved, thereby avoiding one side being too light and the other side being too heavy, affecting the user experience.

[0068] In one embodiment, please refer to Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 、 Figure 11 and Figure 12 The handle 300 includes a first shell 320, a second shell 330 and a first inclined wall 340. The first inclined wall 340 is fixedly connected to one end of the first shell 320 adjacent to the adapter structure 200, and the second inclined surface 310 is formed on the first inclined wall 340. When the wind cylinder portion 100 rotates until the axial direction of the cylinder body 110 is perpendicular to the extension direction of the handle 300, the second shell 330 is located below the first inclined wall 340 and is spliced ​​with the first shell 320 in the axial direction of the cylinder body 110.

[0069] In this embodiment, in order to improve structural strength, the first inclined wall 340 is integrally formed with the first shell 320. The first shell 320 and the second shell 330 can be fixedly connected by means of snaps, screws, etc. By splicing the first shell 320 and the second shell 330 to form the handle 300 shell, the assembly of the connecting structure 400 is more convenient. During assembly, the connecting structure 400 is first installed from the open side of the first shell 320 to the first inclined wall 340, and the adapter structure 200 and the connecting structure 400 are fixedly connected. Then, the second shell 330 is spliced ​​with the first shell 320, and the assembly of the entire handle 300 shell, the adapter structure 200, and the connecting structure 400 can be completed.

[0070] Furthermore, when the wind cylinder portion 100 rotates until the axial direction of the cylinder body 110 is perpendicular to the extension direction of the handle 300, the width of the cross section of the handle 300 in the axial direction of the cylinder body 110 is greater than its radial width; and the handle 300 also includes an anti-slip sleeve 350, which is sleeved on the outer periphery of the first shell 320 and the second shell 330.

[0071] The width of the cross section of the handle 300 in the axial direction of the cylinder 110 is greater than its width in the radial direction, that is, the handle 300 has a flat structure as a whole. In this way, after folding, the handle 300 can be placed directly and stably supported on the table, preventing the wind tube part 100 from falling sideways and affecting use. The anti-slip cover 350 is sleeved on the outer periphery of the first shell 320 and the second shell 330. On the one hand, it can improve the anti-slip performance of the entire handle 300, preventing the user from slipping when grasping the handle 300, and when the portable fan is folded and placed on the table, it can increase the friction between the handle 300 and the table, thereby preventing the portable fan from shifting during use; on the other hand, the anti-slip cover 350 can also cover the joint seam between the first shell 320 and the second shell 330, making the appearance of the entire handle 300 smoother and more beautiful.

[0072] Furthermore, the first shell 320 and the second shell 330 enclose a downward-facing opening. The handle 300 also includes a bottom cover 360, which covers the opening and is secured to the first shell 320 and the second shell 330. The bottom cover 360 is vertically joined to the anti-slip cover 350. By enclosing the first shell 320 and the second shell 330 to form a downward-facing opening, the power supply unit 600 is more easily assembled within the handle 300. The bottom cover 360 can be secured to the first shell 320 and the second shell 330 by means of a snap-fit ​​or plug-in connection. The vertical connection between the bottom cover 360 and the anti-slip cover 350 further enhances the overall aesthetics and coordination of the portable fan.

[0073] In one embodiment, please refer to Figure 5 、 Figure 10 、 Figure 13 The transition structure 200 includes a third shell 260, a fourth shell 270, a second inclined wall 280 and a mounting core 290. The second inclined wall 280 is connected to the end of the third shell 260 away from the cylinder 110, and the first inclined surface 210 is formed on the second inclined wall 280; the third shell 260 and the fourth shell 270 are spliced ​​in the axial direction of the cylinder 110, and the mounting core 290 is arranged in the space enclosed by the third shell 260, the fourth shell 270 and the second inclined wall 280. One end of the mounting core 290 is fixedly connected to the cylinder 110, and the other end is fixedly connected to the connecting structure 400; the mounting core 290 is provided with a hanging rope part 250 on both sides of the cylinder 110 in the radial direction, which is partially exposed and clamped between the first shell 320 and the second shell 330.

[0074] In practice, to enhance structural strength, the second sloping wall 280 is integrally formed with the third shell 260. By splicing the third shell 260 and the fourth shell 270 to form the housing of the adapter structure 200, the assembly of structures such as the circuit board 500 within the adapter structure 200 is facilitated. The third shell 260 and the fourth shell 270 can be securely connected using snaps or screws. By providing an independent mounting core 290 within the third and fourth shells 260, 270, the manufacturing cost of the entire adapter structure 200 can be reduced. The mounting core 290 can be securely connected to the cylindrical body 110 using methods such as plug-in connection or ultrasonic welding. During assembly, the mounting core 290 is first securely connected to the cylindrical body 110, then secured to the connecting structure 400. Finally, the third shell 260 and the fourth shell 270 are spliced ​​to the periphery of the mounting core 290, completing the assembly of the entire adapter structure 200, the connecting structure 400, and the cylindrical body 110. In addition, the hanging rope part 250 is set on the installation core 290. Compared with being set on the third shell 260 and the fourth shell 270, the hanging rope part 250 can be located at the joint of the third shell 260 and the fourth shell 270, which is beneficial to the balance of the center of gravity and can also improve the connection strength between the hanging rope part 250 and the adapter structure 200.

[0075] In one embodiment, if Figure 1-4 、 Figure 6 、 Figure 7 and Figure 14 As shown, the inner wall of the cylinder 110 is fixedly connected with a plurality of air guide blades 113 arranged at intervals around the circumference thereof, and the wind cylinder portion 100 also includes a flow guide member 130 fixedly arranged in the cylinder 110, and the flow guide member 130 is provided with a plurality of flow guide blades 131 arranged at intervals around the circumference of the cylinder 110; the fan 120, the plurality of air guide blades 113 and the flow guide member 130 are arranged in sequence in the air outlet direction of the fan 120; the spiral extension direction of the plurality of air guide blades 113 is opposite to the spiral extension direction of the plurality of guide blades 131.

[0076] In this embodiment, the number of air guide blades 113 and flow guide blades 131 can be selected according to actual needs and is not specifically limited here. It is possible to have multiple air guide blades 113 spirally extend clockwise while multiple flow guide blades 131 spirally extend counterclockwise, or to have multiple air guide blades 113 spirally extend counterclockwise while multiple flow guide blades 131 spirally extend clockwise. The spiral extension direction of the multiple air guide blades 113 is opposite to the spiral extension direction of the multiple flow guide blades 131. In this way, the airflow blown out by the fan 120 can be guided in opposite rotational directions by the multiple air guide blades 113 and the multiple flow guide blades 131, so that the airflow is guided and rectified multiple times from back to front, thereby reducing wind energy loss and noise.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A portable fan, characterized in that: include: The air cylinder portion includes a cylinder body and a fan arranged in the cylinder body, and an air inlet and an air outlet are respectively formed at two axial ends of the cylinder body; A transition structure is fixedly connected to the outer peripheral wall of the cylinder, and the end surface of the transition structure facing away from the cylinder forms a first inclined surface; A handle connected to an end of the adapter structure facing away from the barrel, wherein the end surface of the handle facing the adapter structure forms a second inclined surface that fits in place with the first inclined surface; as well as A connecting structure is provided at the first inclined surface and the second inclined surface, and the connecting structure includes a connecting member and an annular wall connected to each other. One end of the connecting member is fixedly connected to the adapter structure, and the other end can be rotatably hung on the handle along the second inclined surface. The annular wall passes through the first inclined surface and the second inclined surface, and extends along the normal direction of the first inclined surface and the second inclined surface; the adapter structure can rotate along the plane direction of the second inclined surface with the annular wall as the rotation center, so that the wind cylinder part can be rotated until the axial direction of the cylinder body is consistent with or perpendicular to the extension direction of the handle.

2. The portable fan according to claim 1, wherein The connecting member includes a fixing portion provided on the inner periphery of the annular wall and a hanging ring provided on the outer periphery of the annular wall. The fixing portion is fixedly connected to the adapter structure, and the hanging ring can be rotatably hung on the inner wall of the handle around the axis of the annular wall.

3. The portable fan according to claim 2, wherein: The portable fan further includes a circuit board disposed in the adapter structure and a power supply unit disposed in the handle; The transition structure includes a first side wall and a second side wall that are opposite to each other in the axial direction of the cylinder, the length of the first side wall is greater than the length of the second side wall, and the circuit board is fixed to the first side wall; The adapter structure is electrically connected to the power supply unit via a wire, and the fixing portion is provided with a wire hole for the wire to pass through.

4. The portable fan according to claim 3, wherein The fixing portion includes two mounting platforms spaced apart in the radial direction of the cylinder, two mounting posts are provided in the adapter structure corresponding to the two mounting platforms, and the mounting posts are fixedly connected to the mounting platforms; the wire hole is provided between the two mounting platforms.

5. The portable fan according to claim 1, wherein A positioning latch is provided on the second inclined surface, and an arc-shaped latch groove extending circumferentially around the annular wall is opened on the periphery of the annular wall on the first inclined surface, and the arc-shaped latch groove extends from one side of the cylinder to the other side in the radial direction. The first inclined surface is provided with elastic latch arms on both sides of the cylinder in the radial direction, and the elastic latch arms form a part of the groove wall of the arc-shaped latch groove, and the positioning latch is adapted to be latched on the elastic latch arms.

6. The portable fan according to any one of claims 1 to 5, characterized in that The adapter structure is provided with a hanging rope portion on both side walls in the radial direction of the cylinder; when the wind cylinder portion is rotated until the axial direction of the cylinder is consistent with the extension direction of the handle, the air outlet is located on the side away from the handle, and the ratio of the torque of the wind cylinder portion at the hanging rope portion to the torque of the handle at the hanging rope portion is greater than or equal to 0.9 and less than or equal to 1.

1.

7. The portable fan according to claim 6, wherein The handle includes a first shell, a second shell and a first inclined wall, the first inclined wall is fixedly connected to one end of the first shell adjacent to the adapter structure, and the second inclined surface is formed on the first inclined wall; when the wind cylinder portion is rotated until the axial direction of the cylinder body is perpendicular to the extension direction of the handle, the second shell is located below the first inclined wall and is spliced ​​with the first shell in the axial direction of the cylinder body.

8. The portable fan according to claim 7, wherein: When the wind cylinder portion is rotated until the axial direction of the cylinder body is perpendicular to the extension direction of the handle, the width of the cross section of the handle in the axial direction of the cylinder body is greater than its radial width; and the handle also includes an anti-slip sleeve, which is arranged on the outer periphery of the first shell and the second shell.

9. The portable fan according to claim 8, wherein The first shell and the second shell are enclosed to form a downward opening, and the handle further includes a bottom cover, which covers the opening and is fixed to the first shell and the second shell, and is spliced ​​with the anti-slip sleeve in the upper and lower directions.

10. The portable fan according to claim 7, wherein The transition structure includes a third shell, a fourth shell, a second inclined wall and a mounting core, the second inclined wall is connected to the end of the third shell away from the cylinder, and the first inclined surface is formed on the second inclined wall; the third shell and the fourth shell are spliced ​​in the axial direction of the cylinder, and the mounting core is arranged in a space enclosed by the third shell, the fourth shell and the second inclined wall, one end of the mounting core is fixedly connected to the cylinder, and the other end is fixedly connected to the connecting structure; the mounting core is provided with a hanging rope portion that is partially exposed and clamped between the first shell and the second shell on both sides of the radial direction of the cylinder.

11. The portable fan according to claim 1, wherein The inner wall of the cylinder is fixedly connected to a plurality of air guide blades arranged at intervals around the circumference thereof, and the wind cylinder portion also includes a flow guide member fixed in the cylinder, and the flow guide member is provided with a plurality of flow guide blades arranged at intervals around the circumference of the cylinder; the fan, the plurality of the air guide blades and the flow guide member are arranged in sequence in the air outlet direction of the fan; the spiral extension direction of the plurality of the air guide blades is opposite to the spiral extension direction of the plurality of the guide blades.

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