Portable fan

Abstract

The present application discloses a portable fan, comprising a fan main body and a clamping jaw structure. The fan main body is connected to the clamping jaw structure, the clamping jaw structure comprises a fixed clamping member, a movable clamping member, and an adjustment assembly for adjusting the degree of opening between the fixed clamping member and the movable clamping member, the movable clamping member is movably connected to the fixed clamping member, and the adjustment assembly is connected to the fixed clamping member and / or the movable clamping member; the fan main body comprises a fan head, a base and a pitch adjustment structure, the fan head is rotatably connected to the base by means of the pitch adjustment structure, and the fixed clamping member is connected to the base. The fan main body of the present application can be firmly clamped on a particular object by means of the clamping jaw structure, such that the fan is not prone to tilting or falling, and is safer and more reliable to use.

Description

A portable fan

[0001] This application claims priority to patent applications with the Chinese Patent Office, application numbers 202422346857.0, 202422342596.5, 202422342902.5, 202422333430.7, 202521242815.0, 202521223564.1, 202521221966.8, 202521279972.9, 202521285952.2, 202521279586.X, 202521286724.7, 202521277147.5, 202521459573.0, 202521463212.3, 202521464487.9, 202521542187.8, 202521542750.1, 202521538412.0, 202521657806.8, 202521919518.5, 202521920090.6, the entire contents of which are hereby incorporated by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of fans, in particular to a portable fan. BACKGROUND

[0003] Portable fans, that is, fans that can be conveniently carried, are small in size and light in weight, and to some extent meet the needs of portability. Among them, the clamping fan can be moved and clamped, and can be applied to various scenes, especially favored by people.

[0004] The clamping structure of the common clamping fan on the market usually adopts a pressing type, that is, under the cooperation of a torsion spring, after pressing the pressing part, two clamping plates are opened, and after releasing the pressing part, the two clamping plates are clamped on the object. This pressing type clamping fan is usually used for clamping on a flat surface such as a desktop, so the opposite surfaces of the two clamping plates are usually designed as flat surfaces. However, such a design is not suitable for clamping of rod-shaped structures, such as baby stroller guard rails or bed guard rails, resulting in limited use scenarios. Moreover, this pressing type clamping fan mainly relies on the action of a torsion spring to clamp on the object, which not only has weak clamping force and low firmness, but also the torsion spring is easily damaged after multiple pressing uses, causing clamping failure and affecting user experience.

[0005] In addition, the clamping structure commonly used in the market is fixedly connected with the fan body, so that the fan body and the clamping structure cannot be separated or need to be separated by means of tools, resulting in that the fan body can only be used together with the clamping structure and cannot be used alone, which cannot meet the scenes that do not need to be clamped. When the clamping fan is clamped, the height of the clamped object is usually fixed. If the blowing angle of the fan body cannot be adjusted, the clamping fan cannot meet the blowing angle requirement of the user, thereby greatly affecting the user experience.

[0006] Application content

[0007] The purpose of the present application is to solve at least one of the above problems, and provide a portable fan. The technical scheme adopted by the present application is as follows: a portable fan, comprising a fan body and a clamping jaw structure, the fan body is connected with the clamping jaw structure, the clamping jaw structure comprises a fixed clamping piece, a movable clamping piece and an adjusting assembly for adjusting the opening degree between the fixed clamping piece and the movable clamping piece, the movable clamping piece is movably connected to the fixed clamping piece, and the adjusting assembly is connected with the fixed clamping piece and / or the movable clamping piece; the fan body comprises a fan head, a base and a pitch adjusting structure, the fan head is rotatably connected to the base through the pitch adjusting structure, and the fixed clamping piece is connected with the base.

[0008] The present application has the following beneficial effects:

[0009] 1. The present application drives or drives the moving block to move through the driving piece. The moving block drives the movable clamping piece to rotate in the process of moving, so as to adjust the opening size of the movable clamping piece and the fixed clamping piece, so that the clamping jaw structure can be clamped on objects of different specifications and sizes. The driving piece and the moving block are stable and not easy to damage, and have a longer service life. The moving block and the screw part are screw connected. When the screw part does not rotate, the position of the moving block can be locked, that is, the opening size between the movable clamping piece and the fixed clamping piece can be locked, so that the clamping jaw structure can be stably clamped on the corresponding object and is not easy to tilt or fall, and is more safe and reliable to use.

[0010] 2. The clamping jaw structure and the fan body of the present application are detachably connected, so that people can select the use mode of the fan according to their own use requirements, that is, the fan body can be clamped on the desktop or the rod-shaped object for use, and the rod-shaped object is, for example, the guardrail of the baby carriage or the bedside guardrail, etc. The fan body can also be held in the form of handheld or placed on the desktop for use, which further expands the use scene of the fan. The clamping jaw structure and the fan body can be easily separated or the fan body can be installed on the clamping jaw structure by pressing the buckle, so that the installation and disassembly of the fan body and the clamping jaw structure are very simple and fast.

[0011] 3、The fan head of the present application is connected to the base through the pitch adjusting structure, so that the pitch position of the fan head relative to the base can be adjusted, thereby adjusting the blowing direction of the fan head, facilitating the use of the user; and the mounting seat is arranged on the base through the rotating structure, so that the blowing angle of the fan head in the horizontal direction can also be adjusted, further improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings needed to be used in the embodiments or related art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0013] Fig. 1-1 is a schematic view of the portable fan clamped on a rod-shaped object according to the first embodiment of the present application;

[0014] Fig. 1-2 is a structural schematic view of the first embodiment of the portable fan according to the first embodiment of the present application;

[0015] Fig. 1-3 is another angle structural schematic view of the first embodiment of the portable fan according to the first embodiment of the present application;

[0016] Fig. 1-4 is a structural schematic view of the top of the first embodiment of the portable fan according to the first embodiment of the present application;

[0017] Fig. 1-5 is a sectional view of A-A in Fig. 1-4;

[0018] Fig. 1-6 is an internal structural schematic view of the fixed clamping member of the first embodiment of the portable fan according to the first embodiment of the present application;

[0019] Fig. 1-7 is a structural schematic view of the movable clamping member of the first embodiment of the portable fan according to the first embodiment of the present application;

[0020] Fig. 1-8 is a structural schematic view of the cover part of the first embodiment of the portable fan according to the first embodiment of the present application;

[0021] Fig. 1-9 is a structural schematic view of the second embodiment of the portable fan according to the first embodiment of the present application;

[0022] Fig. 1-10 is a sectional view of the second embodiment of the portable fan according to the first embodiment of the present application;

[0023] Fig. 1-11 is a cross-sectional view of the second embodiment of the portable fan according to the first embodiment of the present application, taken from another angle;

[0024] Fig. 1-12 is a structural diagram of the limiting member of the second embodiment of the portable fan according to the first embodiment of the present application;

[0025] Fig. 1-13 is a structural diagram of the movable clamping member of the second embodiment of the portable fan according to the first embodiment of the present application;

[0026] Fig. 1-14 is a structural diagram of the third embodiment of the portable fan according to the first embodiment of the present application;

[0027] Fig. 1-15 is a structural diagram of the third embodiment of the portable fan according to the first embodiment of the present application, taken from another angle;

[0028] Fig. 1-16 is a structural diagram of the cover part of the third embodiment of the portable fan according to the first embodiment of the present application;

[0029] Fig. 2-1 is a structural diagram of the portable fan according to the second embodiment of the present application;

[0030] Fig. 2-2 is a structural diagram of the fan body of the portable fan according to the second embodiment of the present application;

[0031] Fig. 2-3 is a cross-sectional view of the fan head of the portable fan according to the second embodiment of the present application (the direction indicated by the arrow in the figure is the direction of air flow movement);

[0032] Fig. 2-4 is a cross-sectional view of the assembly of the fan assembly and the air outlet shell of the portable fan according to the second embodiment of the present application;

[0033] Fig. 2-5 is a structural diagram of the assembly ring of the portable fan according to the second embodiment of the present application;

[0034] Fig. 2-6 is an enlarged view of A in Fig. 2-5;

[0035] Fig. 2-7 is a structural diagram of the air inlet shell and the filter member of the portable fan according to the second embodiment of the present application;

[0036] Fig. 2-8 is an enlarged view of B in Fig. 2-7;

[0037] Fig. 2-9 is a structural diagram of the bottom part of the base of the portable fan according to the second embodiment of the present application;

[0038] Fig. 2-10 is an assembly diagram of the press buckle and the bottom cover of the portable fan according to the second embodiment of the present application;

[0039] Fig. 2-11 is a cross-sectional view of the base of the portable fan according to the second embodiment of the present application;

[0040] Fig. 2-12 is a structural schematic view of the clamping jaw structure of the portable fan according to the second embodiment of the present application;

[0041] Fig. 2-13 is a structural schematic view of the cover portion of the clamping jaw structure of the portable fan according to the second embodiment of the present application;

[0042] Fig. 2-14 is a structural schematic view of the assembly of the cover portion and the mounting seat of the clamping jaw structure of the portable fan according to the second embodiment of the present application;

[0043] Fig. 2-15 is a cross-sectional view of B-B in Fig. 2-14;

[0044] Fig. 2-16 is a structural schematic view of the assembly of the base and the docking portion of the portable fan according to the second embodiment of the present application;

[0045] Fig. 2-17 is a structural schematic view of another clamping jaw structure of the portable fan according to the second embodiment of the present application;

[0046] Fig. 2-18 is a structural schematic view of the top of the docking portion of another clamping jaw structure of the portable fan according to the second embodiment of the present application;

[0047] Fig. 2-19 is a cross-sectional view of A-A in Fig. 2-18;

[0048] Fig. 2-20 is a schematic view of the portable fan after the pitch angle is adjusted according to the second embodiment of the present application;

[0049] Fig. 2-21 is a schematic view of the assembly of the connecting shaft and the base of the first embodiment of the pitch adjustment structure of the portable fan according to the second embodiment of the present application;

[0050] Fig. 2-22 is a structural schematic view of the connecting arm of the first embodiment of the pitch adjustment structure of the portable fan according to the second embodiment of the present application;

[0051] Fig. 2-23 is a structural schematic view of the connecting arm of the first embodiment of the pitch adjustment structure of the portable fan according to the second embodiment of the present application from another angle;

[0052] Fig. 2-24 is a structural schematic view of the bottom of the fan head of the portable fan according to the second embodiment of the present application;

[0053] Fig. 2-25 is an enlarged view of A in Fig. 2-24;

[0054] Fig. 2-26 is a cross-sectional view of the first embodiment of the pitch adjustment structure of the portable fan according to the second embodiment of the present application;

[0055] Figure 2-27 is a structural schematic diagram of a portable fan according to a second embodiment of the present application;

[0056] Figure 2-28 is an assembly schematic diagram of a pitch adjustment structure of a second embodiment of a portable fan according to the second embodiment of the present application and a fan body;

[0057] Figure 2-29 is an assembly schematic diagram of a connecting shaft and a base of a pitch adjustment structure of a second embodiment of a portable fan according to the second embodiment of the present application;

[0058] Figure 2-30 is a sectional view of an assembly of a base and a connecting shaft and a first mounting seat of a pitch adjustment structure of a second embodiment of a portable fan according to the second embodiment of the present application and the base;

[0059] Figure 3-1 is a structural schematic diagram of a portable fan according to a third embodiment of the present application;

[0060] Figure 3-2 is a schematic diagram of a portable fan after adjustment of a pitch angle according to the third embodiment of the present application;

[0061] Figure 3-3 is a structural schematic diagram of a base of a portable fan according to the third embodiment of the present application;

[0062] Figure 3-4 is a structural schematic diagram of a bottom of a seat body of a portable fan according to the third embodiment of the present application;

[0063] Figure 3-5 is a sectional view of a portable fan according to the third embodiment of the present application;

[0064] Figure 3-6 is an enlarged view of A in Figure 3-5;

[0065] Figure 3-7 is an enlarged view of B in Figure 3-5;

[0066] Figure 3-8 is a structural schematic diagram of a support seat of a portable fan according to the third embodiment of the present application;

[0067] Figure 3-9 is a structural schematic diagram of a pressing member of a portable fan according to the third embodiment of the present application;

[0068] Figure 3-10 is a structural schematic diagram of a portable fan with a clamping jaw structure according to the third embodiment of the present application;

[0069] Figure 3-11 is a schematic diagram of a portable fan clamped on a rod-shaped object according to the third embodiment of the present application;

[0070] Figure 3-12 is a structural schematic diagram of a bottom of a fan body of a portable fan according to the third embodiment of the present application;

[0071] Figure 3-13 is a structural schematic diagram of a clamping jaw structure of a portable fan according to the third embodiment of the present application;

[0072] Fig. 3-14 is a structural diagram of the cover part of the clamping jaw structure of the portable fan according to the third embodiment of the present application;

[0073] Fig. 3-15 is a structural diagram of the cover part and the assembling seat of the clamping jaw structure of the portable fan according to the third embodiment of the present application;

[0074] Fig. 3-16 is a sectional view of Fig. 3-15 at B-B;

[0075] Fig. 4-1 is a structural diagram of the fan body of the portable fan according to the fourth embodiment of the present application;

[0076] Fig. 4-2 is a structural diagram of the fan body of the portable fan according to the fourth embodiment of the present application from another angle;

[0077] Fig. 4-3 is a sectional view of the fan head of the portable fan according to the fourth embodiment of the present application (the direction indicated by the arrow in the figure is the direction of air flow movement);

[0078] Fig. 4-4 is an enlarged view of C in Fig. 4-3;

[0079] Fig. 4-5 is an enlarged view of D in Fig. 4-3;

[0080] Fig. 4-6 is a sectional view of the fan assembly, the air outlet shell, the connecting shell and the assembling ring of the portable fan according to the fourth embodiment of the present application;

[0081] Fig. 4-7 is a structural diagram of the fan blade of the portable fan according to the fourth embodiment of the present application;

[0082] Fig. 4-8 is a side view of the fan blade of the portable fan according to the fourth embodiment of the present application;

[0083] Fig. 4-9 is an exploded view of the fan head of the portable fan according to the fourth embodiment of the present application;

[0084] Fig. 4-10 is a sectional view of the pitch adjusting structure of the portable fan according to the fourth embodiment of the present application;

[0085] Fig. 4-11 is a partial sectional view of the pitch adjusting structure of the portable fan according to the fourth embodiment of the present application;

[0086] Fig. 4-12 is a structural diagram of the half-sphere of the portable fan according to the fourth embodiment of the present application;

[0087] Fig. 4-13 is a sectional view of the half-sphere and the mounting seat of the portable fan according to the fourth embodiment of the present application;

[0088] Fig. 4-14 is an exploded view of the pitch adjusting structure of the portable fan according to the fourth embodiment of the present application;

[0089] Fig. 4-15 is a cross-sectional view of the press buckle structure of the portable fan according to the fourth embodiment of the present application;

[0090] Fig. 5-1 is a structural schematic view of the fan body of the portable fan according to the fifth embodiment of the present application;

[0091] Fig. 5-2 is a cross-sectional view of the fan head of the portable fan according to the fifth embodiment of the present application (the direction indicated by the arrow in the figure is the direction of air flow movement);

[0092] Fig. 5-3 is a structural schematic view of the assembly of the air outlet shell and the fan assembly of the portable fan according to the fifth embodiment of the present application;

[0093] Fig. 5-4 is an exploded view of the fan head of the portable fan according to the fifth embodiment of the present application;

[0094] Fig. 5-5 is an enlarged view of C in Fig. 5-4;

[0095] Fig. 5-6 is a structural schematic view of the air inlet shell of the portable fan according to the fifth embodiment of the present application;

[0096] Fig. 5-7 is a structural schematic view of the air inlet shell of the portable fan according to the fifth embodiment of the present application from another angle;

[0097] Fig. 5-8 is a structural schematic view of the fixing protrusion of the air inlet shell of the portable fan according to the fifth embodiment of the present application;

[0098] Fig. 5-9 is an exploded view of the base and the second mounting seat of the portable fan according to the fifth embodiment of the present application;

[0099] Fig. 5-10 is a structural schematic view of the bottom of the fan head of the portable fan according to the fifth embodiment of the present application;

[0100] Fig. 5-11 is a cross-sectional view of the pitch adjustment structure of the portable fan according to the fifth embodiment of the present application;

[0101] Fig. 5-12 is a structural schematic view of the second mounting seat and the rotating part of the portable fan according to the fifth embodiment of the present application;

[0102] Fig. 5-13 is a cross-sectional view of the press buckle structure of the portable fan according to the fifth embodiment of the present application;

[0103] Fig. 5-14 is a structural schematic view of the U-shaped bracket of the portable fan according to the fifth embodiment of the present application. DETAILED DESCRIPTION

[0104] For the purpose of clarity, the present application will be described with reference to the attached drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the application to those skilled in the art.

[0105] It is noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "inner," "outer," "left," "right," and similar terms are used herein only to describe the relative position of the elements as shown in the drawings and are not intended to be limiting.

[0106] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of the terms "including", "comprising", "having" and the like are meant to encompass the items listed thereafter as well as other items.

[0107] Scheme 1, see FIG. 1-1 to FIG. 1-16.

[0108] The present embodiment is a portable fan, as shown in FIG. 1-1, the portable fan comprises a fan body 100 and a clamping jaw structure, wherein the clamping jaw structure is installed at the bottom of the fan body 100 or other positions capable of being assembled, and as a preferred technical solution, the bottom of the fan body 100 is fixedly connected with the clamping jaw structure.

[0109] The clamping jaw structure and the fan body 100 can be arranged as non-detachable connection or detachable connection. If the clamping jaw structure and the fan body 100 are arranged as detachable connection, the clamping jaw structure can be detachably connected with the fan body 100 through one or a combination of the following ways: clamping, insertion, threaded connection, screw connection, magnetic attraction, etc. The above-mentioned detachable connection modes are only listed and are not limited to the present application.

[0110] The fan body 100 can be clamped on a desktop or a rod-shaped object by the clamping jaw structure, wherein the rod-shaped object is, for example, a bed guardrail or a guardrail of a baby carriage, etc. As shown in FIG. 1-1, the fan body 100 is clamped on a rod-shaped object 101 for use in the present embodiment. The structure of the fan body 100 in the present embodiment is not limited, and other fan bodies capable of being assembled with the clamping jaw structure for use are also applicable.

[0111] The clamping jaw structure of the present application is assembled with the fan body 100 for use, compared with the conventional portable fan clamping the fan by the torsion spring pressing type, the clamping jaw structure in the embodiment can stably fix the fan body on the desktop or the rod-shaped object, the clamping jaw structure is not easy to be damaged, and the clamping is stable, so that the fan body is not easy to be inclined or dropped, and is more suitable for use as a stroller fan, safe and reliable.

[0112] As shown in FIGS. 1-2 to 1-8, it is a schematic diagram of the first embodiment of the clamping jaw structure of the present application. Specifically, the clamping jaw structure in the first embodiment includes a fixed clamping part 11, a movable clamping part 12 and an adjusting assembly 13. The movable clamping part 12 is rotatably connected to the fixed clamping part 11. When the movable clamping part 12 rotates, the opening size between the movable clamping part 12 and the fixed clamping part 11 can be adjusted, and then the clamping jaw structure can be clamped on the object to be installed. The object to be installed can be a planar structure such as a desktop, or a rod-shaped structure such as a stroller guardrail or a bedside guardrail. It should be noted that the objects that can be installed by the clamping jaw structure in the embodiment are only illustrative and do not limit the use of the clamping jaw structure.

[0113] The adjusting assembly 13 is used to drive the movable clamping part 12 to rotate, and the opening degree between the fixed clamping part 11 and the movable clamping part 12 can be adjusted through the adjusting assembly 13, so that the clamping jaw structure can be stably clamped on the object to be installed.

[0114] Specifically, the adjusting assembly 13 in the embodiment includes a moving block 131 and a driving part 132. The driving part 132 is connected to the moving block 131 and is used to drive or move the moving block 131. The moving block 131 is movably connected to the movable clamping part 12. Specifically, the movable clamping part 12 is provided with a clamping groove 123, and the moving block 131 is movably clamped in the clamping groove 123 of the movable clamping part 12. When the driving part 132 drives or moves the moving block 131, the moving block 131 can drive the movable clamping part 12 to rotate in the moving process. When the driving part 132 drives or moves the moving block 131 in the opposite direction, the moving block 131 can drive the movable clamping part 12 to rotate in the opposite direction in the moving process. The movable clamping part 12 can change the opening size between the fixed clamping part 11 and the movable clamping part 12 when rotating.

[0115] As shown in FIG. 1-5 and FIG. 1-6, the driving member 132 is rotationally connected to the fixed clamping member 11 in the embodiment, and the driving member 132 is axially limited on the fixed clamping member 11, that is, the driving member 132 cannot move along the axial direction thereof. The driving member 132 includes a screw rod portion 134 in the embodiment, the screw rod portion 134 is provided with external threads, the moving block 131 is provided with a threaded hole, the moving block 131 is sleeved on the screw rod portion 134, and the moving block 131 is threadedly connected with the screw rod portion 134, and the moving block 131 is circumferentially rotationally limited on the screw rod portion 134, that is, the moving block 131 cannot follow the screw rod portion 134 to rotate circumferentially.

[0116] When the screw rod portion 134 is rotated, the moving block 131 can move along the axial direction of the screw rod portion 134 because the moving block 131 is threadedly connected with the screw rod portion 134 and cannot follow the screw rod portion 134 to rotate circumferentially. When the moving block 131 moves along the axial direction of the screw rod portion 134, the moving block 131 can abut against the side wall of the clamping groove 123 and drive the movable clamping member 12 to rotate because the moving block 131 is clamped in the clamping groove 123 of the movable clamping member 12, thereby achieving the purpose of adjusting the opening size of the movable clamping member 12 and the fixed clamping member 11.

[0117] In other embodiments, the driving member 132 can be an electric driving device such as an electric telescopic rod, and the moving block 131 is connected with the output end of the driving member 132, so that the moving block 131 is directly driven to move by the driving member 132.

[0118] The fixed clamping member 11 is provided in a split structure in the embodiment, as shown in FIG. 1-2, FIG. 1-3, FIG. 1-5 and FIG. 1-6, the fixed clamping member 11 is provided in an upper-lower split structure in the embodiment, specifically, including a body portion 111 and a cover portion 112, the body portion 111 is provided with a mounting cavity 118, the mounting cavity 118 is formed by downwardly recessing the top of the body portion 111 in the embodiment, and the cover portion 112 is covered on the top of the body portion 111.

[0119] The moving block 131 and the screw rod portion 134 are located in the mounting cavity 118 in the embodiment, the moving block 131 and the screw rod portion 134 are located in the mounting cavity 118 of the body portion 111, and then the cover portion 112 is covered on the body portion 111, so that the adjusting assembly 13 can be hiddenly arranged in the interior of the fixed clamping member 11, which not only can reduce the damage of the adjusting assembly 13 and improve the service life of the adjusting assembly 13, but also can save the design space, make the overall structure design of the clamping jaw structure more compact, and greatly improve the external aesthetic degree of the clamping jaw structure.

[0120] As shown in FIG. 1-6, a plurality of hollow cavities 117 are also arranged on the body part 111 in a spaced manner. The arrangement of the hollow cavities 117 can reduce the overall weight of the clamping jaw structure, so that the clamping jaw structure is more lightweight and portable.

[0121] In other embodiments, the fixed clamping part 11 can also be arranged in a left-right split manner. Specifically, the fixed clamping part 11 includes two half-cavity butt joint structures. When the two half-cavity butt joint structures are butted together, an installation cavity 118 can be formed in the fixed clamping part 11.

[0122] Specifically, as shown in FIG. 1-5 and FIG. 1-6, the driving part 132 further includes a limiting part 137 and a handle 138. The screw rod part 134 penetrates into the installation cavity 118. One end of the screw rod part 134 extends into the hollow cavity 117 adjacent to the installation cavity 118. The end of the screw rod part 134 in the hollow cavity 117 is connected to the limiting part 137. In this embodiment, the limiting part 137 is a screw cap which is threadedly connected to the end of the screw rod part 134.

[0123] The other end of the screw rod part 134 is fixedly connected to the handle 138. The handle 138 is at least partially located outside the body part 111. In this embodiment, the entire handle 138 is located outside the body part 111. The arrangement of the handle 138 facilitates user operation. The handle 138 is rotated to drive the screw rod part 134 to rotate. In this embodiment, the screw rod part 134 is axially limited on the fixed clamping part 11 by the arrangement of the limiting part 137 and the handle 138.

[0124] As a preferred technical solution, a bearing 139 is arranged between the limiting part 137 and the outer side wall of the installation cavity 118 and between the handle 138 and the outer side wall of the installation cavity 118. The arrangement of the bearing 139 can improve the stability of the rotation of the driving part 132.

[0125] In this embodiment, the screw rod part 134 is driven to rotate by the user rotating the handle 138. In other embodiments, the screw rod part 134 can be directly driven to rotate by an electric drive device such as a motor or in cooperation with other transmission structures.

[0126] As shown in FIG. 1-6, the body part 111 of this embodiment has a rectangular block structure. Two extension blocks 113 are respectively formed by extending outwardly from two opposite side walls of the body part 111. In this embodiment, the extension blocks 113 have a semicircular arc shape. As a preferred technical solution, the two extension blocks 113 are arranged in an integral molding structure with the body part 111.

[0127] The shape of the cover part 112 in the embodiment matches the shape of the body part 111 and the two extension blocks 113, and the cover part 112 is detachably connected to the top of the body part 111. Specifically, the cover part 112 is detachably connected to the body part 111 by one or a combination of clamping, insertion, threaded connection, screw connection, magnetic attraction, etc. The above detachable connection modes are only listed and do not limit the application.

[0128] As a preferred technical solution, the cover part 112 is detachably fixed and installed on the top of the body part 111 by screws in the embodiment. In order to further conveniently, quickly and accurately install the cover part 112 on the body part 111, the body part 111 and the cover part 112 are quickly positioned and docked by the positioning structure in the embodiment.

[0129] Specifically, the positioning structure in the embodiment includes a first positioning slot 141 and a first positioning column 142, wherein the first positioning slot 141 is arranged on the extension block 113 as shown in FIGS. 1-8, and the first positioning column 142 is arranged at the bottom of the cover part 112. The cover part 112 is quickly and accurately covered on the body part 111 by positioning and insertion of the first positioning column 142 and the first positioning slot 141.

[0130] As a preferred technical solution, the screw for connecting the body part 111 and the cover part 112 is arranged at the position of the first positioning slot 141 and the first positioning column 142. When the first positioning column 142 is inserted into the first positioning slot 141, the screw is used to stably connect the cover part 112 and the body part 111.

[0131] As shown in FIGS. 1-3, the bottom of the body part 111 is provided with an assembly opening 119, the assembly opening 119 is in communication with the mounting cavity 118, and a part of the movable clamping piece 12 extends into the mounting cavity 118 through the assembly opening 119 and is clamped and assembled with the moving block 131.

[0132] As shown in FIGS. 1-3 and 1-5, the fixed clamping piece 11 in the embodiment further includes an assembly lug 114 for assembly connection with the movable clamping piece 12. In the embodiment, two assembly lugs 114 are arranged, and the two assembly lugs 114 are respectively arranged on both sides of the assembly opening 119 at the bottom of the body part 111. As a preferred technical solution, the assembly lug 114 is arranged in an integral molding structure with the body part 111.

[0133] In order to make the clamping jaw structure more convenient to clamp on the rod-shaped object, such as the guardrail of the baby carriage or the bedside guardrail, as shown in FIGS. 1-2 and 1-3, the bottom of the body part 111 is further provided with a first arc-shaped recess 115, and the arc surface of the first arc-shaped recess 115 can better match the surface of the rod-shaped object, thereby facilitating the improvement of the clamping firmness of the fixed clamping piece 11 on the rod-shaped structure.

[0134] As a preferred technical solution, as shown in FIGS. 1-2 and 1-3, the end of the body part 111 at the opening of the clamping jaw structure is provided with an inclined surface 116, which can play a guiding role, facilitating the rod-shaped structure to enter the opening of the clamping jaw structure along the inclined surface 116, thereby conveniently and quickly clamping the clamping jaw structure 1 on the rod-shaped structure.

[0135] As shown in FIG. 1-7, the movable clamping piece 12 includes a clamping part 121 and an assembly part 122, wherein the clamping part 121 is arranged opposite to the bottom of the body part 111 and is used for clamping the object. In the embodiment, the side of the clamping part 121 facing the fixed clamping piece 11 is provided with a second arc-shaped recess 128, and the arc surface of the second arc-shaped recess 128 can better match the surface of the rod-shaped object, thereby facilitating the improvement of the clamping firmness of the movable clamping piece 12 on the rod-shaped structure.

[0136] The assembly part 122 is rotationally connected to the two assembly lug parts 114 through the rotating shaft 126. As a preferred technical solution, the rotating shaft 126 is located at the end position of the assembly part 122 close to the clamping part 121.

[0137] One end of the assembly part 122 is fixedly connected with the clamping part 121, and the other end is inserted into the mounting cavity 118 through the assembly opening 116 and is clamped with the moving block 131. As a preferred technical solution, the assembly part 122 and the clamping part 121 are integrally formed, and of course, the assembly part 122 and the clamping part 121 can also be provided in a detachable split structure.

[0138] As shown in FIGS. 1-4 and 1-7, the end of the assembly part 122 of the movable clamping piece 12 inserted into the mounting cavity 118 is provided with a clamping groove 123. Specifically, the clamping groove 123 can be directly provided on the end of the assembly part 122, or other structures with the clamping groove 123 can be fixedly provided on the end of the assembly part 122. In the embodiment, the clamping groove 123 is directly provided on the end of the assembly part 122.

[0139] The card slot 123 is a U-shaped slot, and the moving block 131 is a columnar structure, and the moving block 131 is clamped in the U-shaped slot. As a preferred technical solution, the screw rod part 134 is arranged at the middle position of the end of the assembly part 122, and the two opposite side walls of the U-shaped slot are provided with an opening 124 for the screw rod part 134 to pass through. The structure of the card slot 123 in the embodiment can not affect the axial movement of the moving block 131 along the screw rod part 134, and the moving block 131 can drive the end of the assembly part 122 during movement, thereby driving the movable clamping piece 12 to rotate, so as to adjust the size of the opening between the fixed clamping piece 11 and the movable clamping piece 12.

[0140] As shown in FIGS. 1-5 and 1-6, the fixed clamping piece 11 is provided with a limiting piece 133 for limiting the circumferential rotation of the moving block 131. Specifically, the limiting piece 133 is a limiting rail arranged on the inner side wall of the mounting cavity 118 and arranged in the axial direction of the screw rod part 134. In the embodiment, two groups of limiting rails are arranged, and the two groups of limiting rails are arranged on the two opposite inner side walls of the mounting cavity 118, and the two ends of the moving block 131 are respectively slidably arranged in the two groups of limiting rails.

[0141] Specifically, the limiting rail includes an upper rail 1331 and a lower rail 1332, and the upper rail 1331 and the lower rail 1332 are arranged on the inner side wall of the mounting cavity 118 in a top-to-bottom manner, and the upper rail 1331 and the lower rail 1332 have a first interval 1333 therebetween, and the end of the moving block 131 is slidably arranged in the first interval 1333. The upper rail 1331 and the lower rail 1332 can not only limit the rotation of the moving block 131, but also provide a sliding track for the moving block 131, so that the moving block 131 can stably move in the axial direction of the screw rod part 134.

[0142] In the embodiment, one end of the upper rail 1331 has a certain interval with the side wall of the mounting cavity 118, which facilitates the assembly of the moving block 131 in the limiting rail. As a preferred technical solution, the upper limiting rail 1331 is provided with a guide angle 1334, which facilitates the assembly convenience and efficiency of the moving block 131 and the limiting piece 133.

[0143] When the card slot 123 is rotated to the upper side of the rotation center line of the movable clamping piece 12, that is, the card slot 123 is located directly above the rotating shaft 126, the bottom end of the moving block 131 abuts or has an interval with the bottom of the card slot 123. This arrangement allows the moving block 131 to have a larger range of movement on the screw rod part 134, thereby ensuring that the movable clamping piece 12 has a larger range of opening and closing degree.

[0144] In order to avoid the mobile block 131 from being pulled out of the clamping groove 123 of the movable clamp 12, the fixed clamp 11 also needs to be provided with a limiting structure for limiting the axial displacement range of the mobile block 131 or limiting the rotation range of the movable clamp 12. In the embodiment, the rotation range of the movable clamp 12 is limited by designing the opening width of the assembly opening 119 along the axial direction of the screw rod part 134, which can avoid additional structures, not only can reduce the cost, but also greatly improve the simplicity of the design of the clamping jaw structure. Of course, in other embodiments, a limiting block can also be provided on the fixed clamp 11 to limit the axial movement range of the mobile block 131 or the rotation range of the movable clamp 12.

[0145] Regardless of the limiting structure for limiting the axial displacement range of the mobile block 131 or the rotation range of the movable clamp 12, it is necessary to ensure that when the mobile block 131 moves to the maximum or minimum displacement or the movable clamp 12 rotates to the minimum or maximum angle, the mobile block 131 cannot be completely pulled out of the clamping groove 123.

[0146] As a preferred technical solution, as shown in FIGS. 1-3, in the embodiment, a plurality of recesses 125 in strip shape are arranged at the bottom of the movable clamp 12. The arrangement of the recesses 125 not only can save materials and reduce costs, but also can reduce the weight of the clamping jaw structure.

[0147] The present application adjusts the opening size between the movable clamp 12 and the fixed clamp 11 through the cooperation of the mobile block 131 and the screw rod part 134, which facilitates the clamping jaw structure to clamp objects of different sizes, and the cooperation between the parts is stable and not easy to damage, and the service life is longer.

[0148] In use, the handle 138 is rotated to adjust the opening of the clamping jaw structure, and when the opening of the clamping jaw structure is placed on the object to be installed, the handle 138 is rotated again to reduce the opening of the clamping jaw structure, so that the clamping jaw structure can be tightly fixed on the object to be installed. Since the mobile block 131 and the screw rod part 134 are threadedly connected, when the screw rod part 134 does not rotate, the position of the mobile block 131 can be locked, that is, the opening size between the movable clamp 12 and the fixed clamp 11 can be locked, thereby the clamping jaw structure can be stably clamped on the corresponding object, and the clamping jaw structure is not easy to be skewed or fall off, and the use is safer and more reliable.

[0149] As shown in FIG. 1-9 to FIG. 1-13, it is a schematic view of the second embodiment of the clamping jaw structure of the present application. As shown in FIG. 1-9, the second embodiment of the clamping jaw structure comprises a fixed clamping member 11, a movable clamping member 12 and an adjusting assembly 13. The movable clamping member 12 is rotatably connected to the fixed clamping member 11. When the movable clamping member 12 rotates, the opening size between the movable clamping member 12 and the fixed clamping member 11 can be adjusted, so that the clamping jaw structure can be clamped on the object to be installed. The object to be installed can be a planar structure, such as a table top, or a rod-shaped structure, such as a stroller guardrail or a bedside guardrail. It should be noted that the objects to be installed in the present embodiment are only illustrative and do not limit the use of the clamping jaw structure.

[0150] The adjusting assembly 13 is used to drive the movable clamping member 12 to rotate. Through the adjusting assembly 13, the opening degree between the fixed clamping member 11 and the movable clamping member 12 can be adjusted, so that the clamping jaw structure can be stably clamped on the object to be installed.

[0151] Specifically, as shown in FIG. 1-10 and FIG. 1-11, the adjusting assembly 13 in the present embodiment comprises a moving block 131 and a driving member 132. The driving member 132 is connected to the moving block 131 and is used to drive the moving block 131 to move. The moving block 131 is movably connected to the movable clamping member 12. Specifically, the movable clamping member 12 is provided with a clamping groove 123, and the moving block 131 is movably clamped in the clamping groove 123 of the movable clamping member 12. When the driving member 132 drives the moving block 131 to move, the moving block 131 can drive the movable clamping member 12 to rotate in the moving process. When the driving member 132 drives or drives the moving block 131 to move reversely, the moving block 131 can drive the movable clamping member 12 to rotate reversely in the moving process. The movable clamping member 12 can change the opening size between the fixed clamping member 11 and the movable clamping member 12 when it rotates.

[0152] In the present embodiment, the driving member 132 is rotatably connected to the fixed clamping member 11, and the driving member 132 is axially limited on the fixed clamping member 11, that is, the driving member 132 cannot move along its axial direction. The driving member 132 in the present embodiment comprises a screw rod portion 134, which is provided with an external thread. The moving block 131 is provided with a threaded hole, the moving block 131 is sleeved on the screw rod portion 134, and the moving block 131 is threadedly connected with the screw rod portion 134. The moving block 131 is circumferentially limited on the screw rod portion 134, that is, the moving block 131 cannot follow the screw rod portion 134 to rotate circumferentially.

[0153] When the screw rod 134 is rotated, the moving block 131 is threadedly connected with the screw rod 134, and the moving block 131 cannot follow the screw rod 134 to rotate circumferentially, so that the moving block 131 can move axially along the screw rod 134. During the axial movement of the moving block 131 along the screw rod 134, the moving block 131 is clamped in the clamping groove 123 of the movable clamping piece 12, and the moving block 131 can abut against the side wall of the clamping groove 123 to drive the movable clamping piece 12 to rotate, thereby adjusting the opening size of the movable clamping piece 12 and the fixed clamping piece 11.

[0154] In the embodiment, the fixed clamping piece 11 is provided in a split structure, as shown in FIGS. 1-10 and 1-11. The fixed clamping piece 11 includes a body part 111 and a cover part 112. The body part 111 is provided with an open top end, and the cover part 112 is covered on the top of the body part 111. The cover part 112 is detachably connected with the body part 111 by one or a combination of clamping, insertion, threaded connection, screw connection, magnetic attraction, etc. The detachable connection mode is only an example and is not limited in the application. As a preferred technical solution, the cover part 112 is inserted on the top of the body part 111.

[0155] The body part 111 is provided with an installation cavity 118, and the moving block 131 and the screw rod 134 are located in the installation cavity 118 of the body part 111. By covering the cover part 112 on the body part 111, the adjusting assembly 13 can be hidden in the fixed clamping piece 11, which not only reduces the damage of the adjusting assembly 13 and prolongs the service life of the adjusting assembly 13, but also saves the design space, makes the overall structure design of the clamping jaw structure more compact, and greatly improves the external appearance of the clamping jaw structure.

[0156] As shown in FIG. 1-10, the bottom of the body part 111 is in a wave shape similar to “~”. The clamping part of the body part 111 is located at the position of the wave peak of the bottom of the body part 111, and the clamping part of the body part 111 includes a first arc-shaped recess 115. The arc surface of the first arc-shaped recess 115 can better fit the surface of the rod-shaped object, thereby improving the clamping firmness of the fixed clamping piece 11 to the rod-shaped structure.

[0157] The mounting cavity 118 in the embodiment is located at the bottom valley position of the body part 111. As shown in FIGS. 1-10 and 1-11, the driving member 132 further comprises a limiting part 137 and a handle 138, the screw part 134 is arranged in the mounting cavity 118, one end of the screw part 134 extends into the mounting cavity 118, the end of the screw part 134 extending into the mounting cavity 118 is fixedly connected with the limiting part 137, and the other end of the screw part 134 is fixedly connected with the handle 138. The handle 138 is located outside the body part 111, and the handle 138 is arranged to facilitate user operation, and the screw part 134 is driven to rotate by rotating the handle. As a preferred technical solution, the handle 138 is provided with anti-skid convex patterns 1381 in the embodiment, and the anti-skid convex patterns 1381 can further facilitate the user to rotate the handle 138.

[0158] In the embodiment, the driving member 132 is axially limited on the fixed clamping member 11 through the limiting part 137. As a preferred technical solution, the limiting part 137 and the screw part 134 are arranged in a formed structure in the embodiment.

[0159] As shown in FIGS. 1-10 and 1-11, the inside of the mounting cavity 118 is provided with a mounting support 151, and the mounting support 151 is detachably provided with a limiting part 152. In the embodiment, the limiting part 152 is fixed on the mounting support 151 by screws. Of course, in other embodiments, the limiting part 152 can also be connected to the mounting support 151 by other fixing modes.

[0160] As shown in FIGS. 1-11 and 1-12, the limiting part 152 is provided with a limiting slot 153, and the limiting part 137 comprises a limiting plug-in part 1371 capable of being plugged into the limiting slot 153. When the limiting plug-in part 1371 is plugged into the limiting slot 153, the limiting part 134 can be axially limited on the limiting part 152, and then the screw part 134 can be axially limited on the fixed clamping member 11, so that the screw part 134 cannot move along the axial direction.

[0161] As shown in FIG. 1-10, the bottom of the body part 111 is provided with an assembly opening 119, the assembly opening 119 is in communication with the mounting cavity 118, and a part of the movable clamping member 12 extends into the mounting cavity 118 through the assembly opening 119 and is assembled with the moving block 131.

[0162] As shown in FIG. 1-13, the movable clamping member 12 in the embodiment comprises a clamping part 121 and an assembly part 122. The clamping part 121 is arranged opposite to the bottom of the body part 111 and is used for clamping objects. In the embodiment, the side of the clamping part 121 facing the fixed clamping member 11 is provided with a second arc-shaped recess 128, and the arc-shaped surface of the second arc-shaped recess 128 can better match the surface of the rod-shaped object, thereby facilitating to improve the clamping firmness of the movable clamping member 12 to the rod-shaped structure.

[0163] The assembling portion 122 is rotatably connected to the body portion 111 through a rotating shaft 126. As a preferred technical solution, the rotating shaft 126 is located at the middle position of the assembling portion 122. One end of the assembling portion 122 is fixedly connected to the clamping portion 121, and the other end extends into the mounting cavity 118 through the assembling opening 119 and is clamped to the moving block 131. As a preferred technical solution, the assembling portion 122 and the clamping portion 121 are integrally formed in the embodiment, and of course, the assembling portion 122 and the clamping portion 121 can also be provided in a detachable split structure.

[0164] In the embodiment, the end of the assembling portion 122 of the movable clamping piece 12 extending into the mounting cavity 118 is provided with a clamping groove 123. Specifically, the clamping groove 123 can be directly formed on the end of the assembling portion 122, or other structures with the clamping groove 123 can be fixedly provided on the end of the assembling portion 122. In the embodiment, the clamping groove 123 is directly formed on the end of the assembling portion 122.

[0165] As shown in FIGS. 1-13, the assembling portion 122 includes two mounting blocks 127 arranged at opposite intervals in the embodiment, and the inner side walls of the two mounting blocks 127 are each provided with a clamping groove 123. The clamping groove 123 is a strip-shaped groove extending out of the mounting block 127 at one end, and the two ends of the moving block 131 are each provided with a clamping portion 136 clamped movably in the strip-shaped groove.

[0166] As a preferred technical solution, the outer side wall of the clamping portion 136 is arranged in close proximity to the inner side wall of the strip-shaped groove in the embodiment, but the clamping portion 136 can still move along the length direction of the strip-shaped groove in the strip-shaped groove.

[0167] In the embodiment, the screw portion 134 is arranged at the middle position of the end of the assembling portion 122, and the interval between the two mounting blocks 127 forms an opening through which the screw portion 134 passes. The structure of the clamping groove 123 and the assembling portion 122 in the embodiment can not affect the axial movement of the moving block 131 along the screw portion 134, and the moving block 131 can push the end of the assembling portion 122 during movement, thereby driving the movable clamping piece 12 to rotate, achieving the purpose of adjusting the opening size between the fixed clamping piece 11 and the movable clamping piece 12.

[0168] In the embodiment, the clamping groove 123 is provided as a strip-shaped groove, which not only enables the moving block 131 to push the assembling portion 122 during movement, but also can limit the circumferential rotation of the moving block 131, i.e., the moving block 131 cannot follow the circumferential rotation of the screw portion 134, greatly simplifying the structure.

[0169] When the clamping groove 123 rotates to the center line of the rotating center of the movable clamping piece 12, that is, the clamping groove 123 is located on the axis of the rotating shaft 126, the bottom end of the moving block 131 abuts or has a gap with the bottom of the clamping groove 123. This setting enables the moving block 131 to have a larger range of movement on the screw rod part 134, thereby ensuring that the movable clamping piece 12 has a larger range of opening and closing degree.

[0170] In order to avoid the moving block 131 from being pulled out of the clamping groove 123 of the movable clamping piece 12, the fixed clamping piece 11 also needs to be provided with a limiting structure for limiting the axial displacement range of the moving block 131 or limiting the rotating range of the movable clamping piece 12. In the embodiment, the rotating range of the movable clamping piece 12 is limited by designing the opening width of the assembly opening 119 along the axial direction of the screw rod part 134. At the same time, the inner wall of the mounting cavity 118 at the assembly opening in the embodiment is also provided with an abutting block 154. When the movable clamping piece 12 rotates to the minimum or maximum opening position, the abutting block 154 can abut and support the movable clamping piece 12 to limit the position.

[0171] Regardless of the limiting structure for limiting the axial displacement range of the moving block 131 or limiting the rotating range of the movable clamping piece 12, it is necessary to ensure that when the moving block 131 moves to the maximum or minimum displacement or the movable clamping piece 12 rotates to the minimum or maximum angle, the moving block 131 cannot be completely pulled out of the clamping groove 123.

[0172] As a preferred technical solution, the first arc-shaped recess 115 of the fixed clamping piece 11 and the second arc-shaped recess 128 of the movable clamping piece 12 are both provided with anti-slip pads 155 in the embodiment. The anti-slip pads 155 are used to increase the friction between the clamping jaw structure and the object to be installed, and improve the stability of the clamping jaw structure. In the embodiment, the anti-slip pads 155 can be silicone pads or rubber pads or other materials made of elastic soft pads. As a preferred technical solution, the outer surface of the anti-slip pad 155 is provided in a wave shape, which is beneficial to further improve the stability of the clamping jaw structure.

[0173] The application adjusts the opening size between the movable clamping piece 12 and the fixed clamping piece 11 through the cooperation of the moving block 131 and the screw rod part 134, which is convenient for the clamping jaw structure to clamp objects of different specifications and sizes, and the cooperation between the parts is stable and not easy to damage, thereby prolonging the service life.

[0174] In use, the handle 138 is rotated to adjust the opening of the clamping jaw structure, and when the opening of the clamping jaw structure is placed on the object to be installed, the handle 138 is rotated again to adjust the opening of the clamping jaw structure, so that the clamping jaw structure can be fastened on the object to be installed. Since the moving block 131 is in threaded connection with the screw rod part 134, when the screw rod part 134 is not rotated, the position of the moving block 131 can be locked, that is, the size of the opening between the movable clamping part 12 and the fixed clamping part 11 can be locked, so that the clamping jaw structure can be stably clamped on the corresponding object, and the clamping jaw structure is not easy to tilt or fall, and the use is safer and more reliable.

[0175] As shown in FIGS. 1-14 to 1-18, it is a schematic view of a third embodiment of the clamping jaw structure of the present embodiment. As shown in FIG. 1-14, the third embodiment includes a fixed clamping part 11, a movable clamping part 12 and an adjusting assembly 13. The movable clamping part 12 is rotatably connected to the fixed clamping part 11, and when the movable clamping part 12 is rotated, the size of the opening between the movable clamping part 12 and the fixed clamping part 11 can be adjusted, so that the clamping jaw structure can be installed on other objects. The other objects can be planar structures such as table tops, etc., or rod-shaped structures such as the guardrails of baby strollers or the guardrails of beds. It should be noted that the objects that can be installed by the clamping jaw structure of the present embodiment are only illustrative and do not limit the use of the clamping jaw structure. The adjusting assembly 13 of the present embodiment is used to drive the movable clamping part 12 to rotate, and the opening between the fixed clamping part 11 and the movable clamping part 12 can be adjusted by the adjusting assembly 13, so that the clamping jaw structure can be stably clamped on the corresponding object.

[0176] As shown in FIG. 1-15, the fixed clamping part 11 of the present embodiment includes a body part 111 and a cover part 112, wherein the cover part 112 is covered on the top of the body part 111. In the present embodiment, the cover part 112 is a circular cover, and in other embodiments, the shape of the cover part 112 can match the shape of the top of the body part 111. In the present embodiment, the cover part 112 is detachably connected to the top of the body part 111, and in the present embodiment, the cover part 112 is installed on the top of the body part 111 by screws or rivets and the like. It should be noted that the fixing method by screws or rivets and the like is a preferred way to achieve detachable connection of the cover part 112 and the body part 111, and is not limited by the present application.

[0177] In order to facilitate the cover body 112 to be conveniently, quickly and accurately installed on the body part 111, as shown in FIG. 1-16, the body part 111 and the cover body 112 are quickly positioned and connected through the first positioning slot 141 and the first positioning column (not shown in the figure). Specifically, the first positioning slot 141 is arranged on the outwardly extending arc-shaped block 113 of the body part 111, and as a preferred technical solution, the arc-shaped block 113 is arranged in an integral molding structure with the body part 111 in the embodiment. The first positioning column is arranged at the bottom of the cover body 112, and the first positioning column and the first positioning slot 141 are positioned and connected, so that the cover body 112 can be quickly and accurately covered on the body part 111.

[0178] As a preferred technical solution, the fasteners such as screws or rivets used to connect the body part 111 and the cover body 112 are arranged at the positions of the first positioning slot 141 and the first positioning column in the embodiment. Specifically, the bottom of the first positioning slot 141 is provided with a through hole, and the first positioning column is provided with a mounting hole. When the first positioning column is connected to the first positioning slot 141, the fasteners such as screws or rivets are connected through the through hole on the first positioning slot 141 and the mounting hole on the first positioning column, so that the cover body 112 can be fixedly connected to the body part 111.

[0179] As shown in FIG. 1-15 and FIG. 1-16, the body part 111 is formed by two half parts which are connected through the fasteners such as screws or rivets in the embodiment. It should be noted that the two half parts of the body part 111 are connected through the fasteners such as screws or rivets, which is a preferred solution for detachable connection of the two half parts of the body part 111, and does not limit the application.

[0180] Specifically, as shown in FIG. 1-16, the two half parts of the body part 111 are respectively provided with the connecting groove 15 and the connecting column 16, wherein the connecting groove 15 is provided with a mounting ring, and the connecting column 16 is provided with a blind hole. When the two half parts of the body part 111 need to be assembled, the connecting column 16 is first inserted into the connecting groove 15 to realize the positioning and connection of the two half parts of the body part 111, and then the fasteners such as screws or rivets are abutted with the mounting ring and connected with the blind hole on the connecting column 16, so that the two half parts of the body part 111 can be stably connected.

[0181] In order to facilitate the assembly of the fixed clamping part 11 and the movable clamping part 12, as shown in FIG. 1-15, the fixed clamping part 11 further includes an assembly ear 114 which is used for assembly connection with the movable clamping part 12. Two assembly ears 114 are arranged in the embodiment, and the two assembly ears 114 are respectively arranged on the two sides of the bottom of the body part 111. As a preferred technical solution, the assembly ear 114 is arranged in an integral molding structure with the body part 111 in the embodiment.

[0182] In order to make the clamping jaw structure more convenient to clamp on the rod-shaped object, such as the guardrail of the baby carriage or the bed guardrail, as shown in FIG. 1-15, the bottom of the body part 111 is further provided with a first arc-shaped recess 115, and the arc surface of the first arc-shaped recess 115 can better match the surface of the rod-shaped object, thereby facilitating the improvement of the clamping firmness of the fixed clamping piece 11 on the rod-shaped structure. As a preferred technical solution, as shown in FIG. 1-15, the end of the body part 111 close to the opening of the clamping jaw structure is provided with an inclined surface 116, which can play a guiding role, facilitating the rod-shaped structure to enter the opening of the clamping jaw structure along the inclined surface 116, thereby conveniently and quickly clamping the clamping jaw structure 1 on the rod-shaped structure.

[0183] As a preferred technical solution, as shown in FIG. 1-16, a plurality of hollow cavities 117 are arranged on the body part 111 at intervals, and the arrangement of the hollow cavities 117 can reduce the overall weight of the clamping jaw structure, so that when the clamping jaw structure is assembled with the portable fan, the fan as a whole is more lightweight and convenient to carry.

[0184] As shown in FIG. 1-15, the movable clamping piece 12 includes a clamping part 121 and an assembly part 122, wherein the clamping part 121 is arranged opposite to the bottom of the body part 111 and is used for clamping the object. The assembly part 122 is rotatably connected to the two assembly lug parts 114 through a rotating shaft 126. As a preferred technical solution, the assembly part 122 and the clamping part 121 are integrally formed. As a preferred technical solution, as shown in FIG. 1-15, the bottom of the movable clamping piece 12 is provided with a plurality of recesses 125 in strip shape at intervals, which not only can save materials and reduce costs, but also can reduce the weight, so that when the clamping jaw structure is assembled with the fan body, the fan is more lightweight and convenient to carry.

[0185] The adjusting assembly 13 in the embodiment is used for driving the movable clamping piece 12 to rotate, and the opening degree between the fixed clamping piece 11 and the movable clamping piece 12 can be adjusted through the adjusting assembly 13, so that the clamping jaw structure can be stably clamped on the corresponding object. As shown in FIG. 1-14 to FIG. 1-16, the adjusting assembly 13 includes a screw rod 1311, and the clamping part 121 is provided with a mounting through hole 1241 at one end close to the assembly part 122. A connecting block 1321 is arranged in the mounting through hole 1241, the connecting block 1321 is in a cylindrical shape, the screw rod 1311 is arranged in the connecting block 1321 along the radial direction of the connecting block 1321 and is threadedly connected with the connecting block 1321, and the clamping part 122 is provided with an avoiding hole 1251 through which the screw rod 1311 passes.

[0186] As shown in FIG. 1-16, in the embodiment, one end of the screw rod 1311 extends into the hollow cavity 117 in the body part 111, the bottom of the body part 111 is provided with an assembly opening 119 for the screw rod 1311 to extend into the hollow cavity 117, and the other end of the screw rod 1311 is provided with a handle 138, which facilitates the user to rotate the screw rod. The end of the screw rod 1311 located in the hollow cavity 117 is provided with a cap 1341, which is screwed onto the end of the screw rod 1311, and the cap 1341 can prevent the screw rod 1311 from coming out of the assembly opening 119. As a preferred technical solution, the end of the screw rod 1311 extending into the hollow cavity 117 is also provided with a bearing 139.

[0187] In the embodiment, by rotating the screw rod 1311, the movable clamping part 12 is driven to rotate through the connecting block 1321, and the opening size between the movable clamping part 12 and the fixed clamping part 11 can be adjusted, so that the claw structure can be clamped on objects of different specifications and different shapes. When the screw rod 1311 is not rotated, the position of the movable clamping part 12 can be locked, that is, the opening size between the movable clamping part 12 and the fixed clamping part 11 can be locked, and the claw structure 1 can be stably clamped on the corresponding object.

[0188] As a preferred technical solution, the claw structure 1 in the embodiment is detachably arranged on the base 2, and the detachable arrangement of the fan body and the claw structure enables the user to select the use mode of the fan according to the user's own needs, that is, the fan body can be clamped on a desktop or a rod-shaped object for use, and the rod-shaped object is, for example, a guardrail of a baby carriage or a bedside guardrail, etc., and the fan body can also be held in a handheld form for use or placed on a desktop for use, thereby further expanding the use scenarios of the fan. As shown in FIG. 19-21, in the embodiment, the claw structure is detachably arranged on the base 2 by pressing the buckle structure, and the detachable arrangement of the fan body and the claw structure enables the fan body to be used in a handheld or desktop manner alone, or to be clamped on a desktop or a rod-shaped structure in cooperation with the claw structure, so that the portable fan can be applied to more use scenarios.

[0189] Scheme 2, see FIG. 2-1 to FIG. 2-30.

[0190] The embodiment is an embodiment of a portable fan, which comprises a fan body and a claw structure, and the claw structure is used for clamping the portable fan, that is, the portable fan is mounted on the claw structure, and then the portable fan can be clamped on a desktop or a rod-shaped object for use, and the rod-shaped object is, for example, a guardrail of a baby carriage or a bedside guardrail, etc., thereby enabling the portable fan to be applied to more application scenarios.

[0191] The clamping jaw structure in the embodiment is the clamping jaw structure in the first embodiment or the third embodiment described in scheme 1, and the specific structure is described in detail in scheme 1. Of course, this is not a restrictive provision, and other clamping jaw structures that can achieve the clamping function can also be used.

[0192] The fan main body in the embodiment includes a fan head 3, as shown in FIGS. 2-2 to 2-8. The fan head 3 in the embodiment includes an outer shell 31, a fan assembly 32, an air inlet shell 33, and an air outlet shell 34. The outer shell 31 is a cylindrical shell with two open ends. The two ends of the outer shell 31 are an air inlet end A and an air outlet end B, respectively. External air enters the outer shell 31 from the air inlet end A of the outer shell 31 and is discharged from the air outlet end B of the outer shell 31. The fan assembly 32 is located inside the outer shell 31. The air inlet shell 33 is arranged at the air inlet end of the outer shell 31, and the air inlet shell 33 is provided with an air inlet passage. The air outlet shell 34 is arranged at the air outlet end of the outer shell 31, and the air outlet shell 34 is provided with an air outlet passage.

[0193] As shown in FIG. 2-3, the fan head 3 in the embodiment further includes a connecting shell 37, which is fixedly arranged inside the outer shell 31. In the embodiment, the air inlet shell 33 is detachably connected to the end of the connecting shell 37 facing the air inlet end of the outer shell. Specifically, as shown in FIGS. 2-3 and 2-5, the connecting shell 37 in the embodiment is connected with an assembly ring 39 on the side facing the air inlet end of the outer shell 31, and the assembly ring 39 is connected with the air inlet end of the outer shell 31. As a preferred technical solution, the connection between the assembly ring 39 and the air inlet end of the outer shell 31 can be achieved by screw connection, clamping, or insertion, etc. The connection method is only listed here and is not a restrictive provision. In addition, in the embodiment, the assembly ring 39 is located inside the outer shell 31, i.e., the end of the assembly ring 39 does not protrude outward beyond the end of the outer shell 31.

[0194] In the embodiment, the air inlet shell 33 is detachably connected to the assembly ring 39. As shown in FIGS. 2-3 and 2-7, the air inlet shell 33 in the embodiment is arranged as a cylindrical structure with one open end. In the embodiment, the diameter of the open end of the air inlet shell 33 is slightly larger than the diameter of the closed end of the air inlet shell 33. As shown in FIGS. 2-3 and 2-5, the side of the assembly ring 39 facing the air inlet shell 33 is provided with an assembly recess 392. The open end of the air inlet shell 33 can be inserted into the assembly recess 392 of the assembly ring 39, which facilitates the accurate positioning of the air inlet shell 33 during assembly and helps to improve the installation efficiency of the air inlet shell 33.

[0195] As shown in FIGS. 2-5 to 2-8, in the embodiment, the air inlet shell 33 and the assembly ring 39 are detachably connected through the clamping structure 5. Specifically, as shown in FIGS. 2-5 to 2-8, in the embodiment, the clamping structure 5 includes a clamping groove 51 and a clamping block 52, and the clamping block 52 is arranged on the assembly ring 39. In the embodiment, the clamping block 52 is in an "L" shaped block structure, and specifically, the clamping block 52 includes a first block body 521 and a second block body 522 connected with each other, wherein the first block body 521 is arranged on the assembly ring 39 along the axis of the assembly ring 39, and the second block body 522 is arranged on the assembly ring 39 along the circumference of the assembly ring 39.

[0196] In the embodiment, the clamping groove 51 is arranged on the outer side wall of the open end of the air inlet shell 33, and the shape of the clamping groove 51 matches the shape of the clamping block 52. When the air inlet shell 33 is inserted into the assembly recess 392 on the assembly ring 39, rotating the air inlet shell 33 can make the clamping block 52 on the assembly ring 39 clamped in the clamping groove 51 of the air inlet shell 33, at this time, the air inlet shell 33 is axially limited on the assembly ring 39, that is, the air inlet shell 33 can be installed on the assembly ring 39. When it is needed to detach the air inlet shell 33 from the assembly ring 39, only need to rotate the air inlet shell 33 in the opposite direction, so that the clamping block 52 is detached from the clamping groove 51, and then the air inlet shell 33 can be detached from the assembly ring 39.

[0197] As a preferred technical solution, in the embodiment, the second block body 522 of the clamping block 52 is provided with a positioning recess 523, and the clamping groove 51 is provided with a positioning protrusion 511. When the clamping block 52 is clamped in the clamping groove 51, the positioning protrusion 511 on the clamping groove 51 is limited on the positioning recess 523 on the second block body 522, and through the arrangement of the positioning protrusion 511 and the positioning recess 523, the clamping block 52 can be self-locked and positioned, and then the air inlet shell 33 can be more stably assembled on the assembly ring 39. In addition, the arrangement of the positioning protrusion 511 and the positioning recess 523 can also play a prompting role, that is, when the positioning protrusion 511 is clamped in the positioning recess 523, there will be a certain jamming feeling, which can prompt the user that the air inlet shell 33 has been installed. In the embodiment, through the arrangement of the assembly ring 39 and the clamping structure 5, the air inlet shell 33 can be detachably connected to the air inlet end of the shell 31, so that the air inlet shell 33 is convenient to disassemble, which is beneficial to the cleaning of the air inlet shell 33 and the maintenance and replacement of the internal parts.

[0198] As shown in FIG. 2-3 and FIG. 2-7, in order to improve the cleanliness of the air outlet, the air inlet shell 33 is further provided with a filter 4 in the embodiment. In the embodiment, the filter 4 is provided in a cylindrical structure. Specifically, the filter 4 can be a HEPA filter cartridge. The filter 4 can filter and clean the air entering the shell 31, effectively preventing dust or particulate matter from harming the user. As a preferred technical solution, the filter 4 is coaxially arranged in the air inlet shell 33. As shown in FIG. 2-3 and FIG. 2-7, the side wall of the air inlet shell 33 is provided with a plurality of air inlet holes 331, which are air inlet channels of the air inlet shell 33. The air inlet holes 331 are arranged towards the filter 4, so that the air entering the air inlet shell 33 can first contact the filter 4 for filtration before entering the shell 31. As a preferred technical solution, the side wall of the air inlet shell 33 is circularly bulged outward, which is beneficial to increase the air inlet area.

[0199] As a preferred technical solution, as shown in FIG. 2-7, the inner side wall of the air inlet shell 33 is uniformly provided with a plurality of ribs 332 along the circumference of the air inlet shell 33. The ribs 332 can support the filter 4, so that the filter 4 can be stably located inside the air inlet shell 33. At the same time, the ribs 332 can provide a certain gap between the side wall of the air inlet shell 33 and the filter 4. This arrangement can effectively prevent the filter 4 from being tightly attached to the air inlet holes 331, which can reduce air resistance and ensure air inlet volume on the one hand, and can make the air enter the air inlet shell 33 first before contacting the filter 4 for filtration, thereby ensuring the effective contact area between the air and the filter 4, which is beneficial to improve the filtration efficiency.

[0200] When the air inlet shell 33 is installed on the assembly ring 39, the filter 4 is axially limited between the assembly ring 39 and the air inlet shell 33, i.e., one end of the filter 4 abuts against the assembly ring 39, and the other end abuts against the inner bottom of the air inlet shell 33. When the air inlet shell 33 is detached from the assembly ring 39, the filter 4 can be directly taken out of the air inlet shell 33, which is convenient for replacing or cleaning the filter 4. The arrangement of the filter 4 in the embodiment can filter the air entering the air inlet shell 33, which is beneficial to improve the cleanliness of the air outlet and effectively reduce the harm of dust or particulate matter to the user.

[0201] In the embodiment, the filter 4 is arranged in the air inlet shell 33, and the air outlet shell 34, the connecting shell 37 and the fan assembly 32 cooperate to form a pressure channel with a gradually decreasing radial cross-sectional area from the air inlet end to the air outlet end of the shell 31. The pressure channel can effectively increase the air supply distance and the air outlet volume, and can also improve the air inlet suction of the fan head 3, so that the fan head 3 can still ensure sufficient air inlet volume even with the filter 4, without affecting the user's experience.

[0202] As shown in FIG. 2-3, the fan assembly 32 in the embodiment is arranged in the connecting shell 37 and is assembled on the air outlet shell 34. Specifically, the fan assembly 32 includes a motor assembly 321 and a fan blade 36, the motor assembly 321 is installed on one side of the air outlet shell 34 towards the air inlet end of the shell 31, the motor assembly 321 is used to drive the fan blade 36 to rotate, and the fan blade 36 is connected to the output shaft of the motor assembly 321. Specifically, as shown in FIG. 2-3 and FIG. 2-4, the fan blade 36 in the embodiment includes an assembly cylinder 361, a hub 362 and a plurality of blades 363, wherein the hub 362 is in the form of a conical cover structure, and specifically, the hub 362 in the embodiment is in the form of a truncated cone, and is a cover structure with one end open and the other end sealed. The sealed end of the hub 362 is a conical top end 3621, which is towards the air inlet end of the shell 31, and the open end of the hub 362 is an expanded end 3622, which is towards the air outlet end of the shell 31. The radial cross-sectional area of the hub 362 gradually increases from the air inlet end to the air outlet end of the shell 31, and specifically, the hub 362 in the embodiment includes a wind guide surface 3623 which increases radially from the air inlet end to the air outlet end of the shell 31. As a preferred technical solution, at least part of the wind guide surface 3623 is recessed radially inward to form a concave surface.

[0203] Wherein the assembly cylinder 361 is arranged at the expanded end 3622 of the hub 362, and the assembly cylinder 361 is at least partially located inside the hub 362. Specifically, one end of the assembly cylinder 361 is fixedly connected to the inner side wall of the hub 362, and the other end of the assembly cylinder 361 protrudes forward beyond the expanded end 3622 of the hub 362. Part of the motor assembly 321 is located in the assembly cylinder 361, and as a preferred technical solution, the motor assembly 321 in the embodiment adopts an outer rotor brushless motor or a three-phase high-speed micro motor or other suitable motor, which is specifically selected and used according to the required requirements.

[0204] As shown in FIG. 2-4, the inside of the hub 362 in the embodiment is provided with a first mounting sleeve 364. Specifically, one end of the first mounting sleeve 364 is fixedly connected with the inside of the conical top end 3621 of the hub 362, and the other end of the first mounting sleeve 364 is connected with the output shaft of the motor assembly 321, and the motor assembly 321 can drive the entire fan blade 36 to rotate through the first mounting sleeve 364. As a preferred technical solution, a plurality of reinforcing plates 365 are arranged between the outer wall of the first mounting sleeve 364 and the inner wall of the hub 362, and the plurality of reinforcing plates 365 are arranged in the circumferential direction of the first mounting sleeve 364 and are arranged between the hub 362 and the first mounting sleeve 364. The arrangement of the reinforcing plates 365 in the embodiment can improve the stability of the first mounting sleeve 364 arranged inside the hub 362, and thus the stability of the entire fan blade 36 rotating can be improved.

[0205] As shown in FIG. 2-3 and FIG. 2-4, in the embodiment, a plurality of blades 363 are fixed on the outer side wall of the hub 362 at equal intervals along the circumference of the hub 362. As a preferred technical solution, in the embodiment, each of the plurality of blades 363 extends at a preset angle from the air inlet end of the shell 31 to the air outlet end and along the circumference of the hub 362, and the interval distance between the end portions of two adjacent blades 363 near the air inlet end of the shell 31 is less than the interval distance between the end portions of two adjacent blades 363 near the air outlet end of the shell 31, which is conducive to improving the smoothness of gas flow, increasing the air inlet amount, and reducing noise.

[0206] As shown in FIG. 2-4, the hub 362 of the embodiment includes a guide portion 3624 and a blade connecting portion 3625 along the axial direction of the hub 362, and in the embodiment, the guide portion 3624 and the blade connecting portion 3625 are integrally formed. The guide portion 3624 is arranged towards the air inlet end of the shell 31, and a plurality of blades 363 are fixed on the outer side wall of the blade connecting portion 3625 at equal intervals along the circumference of the hub 362. The arrangement of the guide portion 3624 can play a good guiding role and can make the air smoothly transition to the blades, which is conducive to increasing the air inlet amount and ensuring that the blades have sufficient setting length on the hub, so that the blades can sufficiently comb the airflow and ensure the air supply performance of the fan blades.

[0207] As shown in FIG. 2-3, in the embodiment, the connecting shell 37 includes a second outer cylinder portion 371 and a second inner cylinder portion 372. In the embodiment, the second outer cylinder portion 371 is a cylindrical cylinder structure, i.e., the second outer cylinder portion 371 is a cylindrical structure with equal diameters. The second inner cylinder portion 372 is located inside the second outer cylinder portion 371 and is arranged towards the hub 362. In the embodiment, a plurality of second connecting plates 373 are arranged between the second inner cylinder portion 372 and the second outer cylinder portion 371 along the circumference of the second outer cylinder portion 371.

[0208] As a preferred technical solution, in the embodiment, the assembly ring 39 is detachably connected with the second connecting plate 373. Specifically, in the embodiment, the assembly ring 39 is connected to the second connecting plate 373 by screws or rivets, and as shown in FIG. 2-5, the assembly ring 39 is provided with a plurality of assembly holes 391 for the screws or rivets and the like to pass through. It should be noted that the fixing mode of the screws or rivets and the like is a preferred mode for realizing the detachable connection between the assembly ring 39 and the connecting shell 37, and is not a limitation of the present application.

[0209] As shown in FIGS. 2-3, the second inner cylinder part 372 in the embodiment includes a variable-diameter section 3721 and a constant-diameter section 3722, wherein one end of the variable-diameter section 3721 is fixedly connected to the end of the second outer cylinder part 371 close to the air outlet end of the outer shell 31, the other end of the variable-diameter section 3721 is connected to the constant-diameter section 3722, and the radial cross-sectional area of the variable-diameter section 3721 gradually increases from the air inlet end of the outer shell 31 to the air outlet end of the outer shell 31. Specifically, the variable-diameter section 3721 includes an inner side surface 3724 that gradually increases radially from the air inlet end of the outer shell 31 to the air outlet end of the outer shell 31. As a preferred technical solution, the second outer cylinder part 371, the variable-diameter section 3721, the constant-diameter section 3722, and the second connecting plate 373 in the embodiment are integrally formed. The end of the second outer cylinder part 371 toward the air inlet end of the outer shell 31 and the end of the constant-diameter section 3722 toward the air inlet end of the outer shell 31 are in close abutment with the assembly ring 39, and the inner side wall of the assembly ring 39 smoothly transitions to the inner side wall of the constant-diameter section 3722.

[0210] As shown in FIGS. 2-3, the fan blade 36 and the variable-diameter section 3721 form a flow guide channel, and the air guide surface 3621 of the hub 36 and the inner side surface 3724 of the variable-diameter section 3721 cause the radial cross-sectional area of the flow guide channel to gradually decrease from the air inlet end of the outer shell 31 to the air outlet end of the outer shell 31. This not only has the effect of guiding the air obliquely, but also has the effect of pressurizing the air, which is conducive to increasing the air supply distance and enhancing the air inlet suction.

[0211] As shown in FIGS. 2-3, the air outlet shell 34 in the embodiment is arranged on one side of the connecting shell 37 toward the air outlet end of the outer shell 31. Specifically, the air outlet shell 34 in the embodiment includes a first outer cylinder part 341 and a first inner cylinder part 342. The first outer cylinder part 341 in the embodiment is a cylindrical cylinder, and the inner side wall of the first outer cylinder part 341 is at least partially constant in diameter. One end of the first outer cylinder part 341 is fixedly connected to the air outlet end of the outer shell 31. As a preferred technical solution, the connection between the first outer cylinder part 341 and the air outlet end of the outer shell 31 can be achieved by screwing, clamping, or inserting, etc. The other end of the first outer cylinder part 341 is in close abutment or clamped with the end of the second outer cylinder part 371 and the second inner cylinder part 372 toward the air outlet end of the outer shell 31, and the inner side wall of the second inner cylinder part 372 smoothly transitions to the inner side wall of the first outer cylinder part 341.

[0212] As shown in FIG. 2-3 and FIG. 2-4, a plurality of first connecting plates 343 are fixed between the first outer cylinder portion 341 and the first inner cylinder portion 342, the plurality of first connecting plates 343 are uniformly arranged between the first outer cylinder portion 341 and the first inner cylinder portion 342 along the circumferential direction of the first outer cylinder portion 341 or the first inner cylinder portion 342, and an air outlet channel 344 of the air outlet shell 34 is formed between adjacent two first connecting plates 343. In the embodiment, the first connecting plate 343 is arranged in a flat plate structure, and the first connecting plate 343 is arranged on the outer side wall of the first inner cylinder portion along the axial direction of the first inner cylinder portion.

[0213] As shown in FIG. 2-3 and FIG. 2-4, the first inner cylinder portion 342 is a circular truncated cone cylinder with both ends open. Specifically, in the embodiment, the radial cross-sectional area of the first inner cylinder portion 342 gradually increases from the air inlet end of the shell 31 to the air outlet end of the shell 31, and the first inner cylinder portion 342 includes a pressurizing surface 3421 that gradually increases radially from the air inlet end of the shell 31 to the air outlet end of the shell 31. As a preferred technical solution, at least a part of the pressurizing surface 3421 protrudes radially outward to form a convex surface. In the embodiment, the inner side wall surface of the first outer cylinder portion 341 and the pressurizing surface 3421 of the first inner cylinder portion 342 cause the cross-sectional area of the air outlet channel 344 to gradually decrease from the air inlet end of the shell 31 to the air outlet end of the shell 31, which can play a secondary pressurizing role on the air, further increase the airflow velocity and the air supply distance, and enhance the air inlet suction. In addition, the first connecting plate 343 can further comb and transform the airflow passing through the air outlet shell 33, adjust the flow direction of the airflow, and further increase the air supply distance.

[0214] In the embodiment, the flow guide channel formed by the fan blade 36 and the second inner cylinder portion 372 and the air outlet channel 344 formed by the first outer cylinder portion 341, the first inner cylinder portion 342, and the first connecting plate 343 together form a pressurizing channel in the fan head 3 of the embodiment. In the embodiment, the flow guide channel smoothly transitions to the air outlet channel. In the embodiment, the pressurizing flow channel causes the fluid to be obliquely guided out of the air outlet, and can pressurize the fluid step by step, which is beneficial to increase the air outlet volume, the air supply distance, and the air inlet suction. Therefore, in the embodiment, the fan head 3 still has a large air inlet volume when the filter 4 is arranged, which can meet the user's experience.

[0215] As shown in FIG. 2-3 and FIG. 2-4, the first inner cylinder portion 342 is a circular truncated cone cylinder with both ends open. Specifically, in the embodiment, the radial cross-sectional area of the first inner cylinder portion 342 gradually increases from the air inlet end of the shell 31 to the air outlet end of the shell 31, and the first inner cylinder portion 342 includes a pressurizing surface 3421 that gradually increases radially from the air inlet end of the shell 31 to the air outlet end of the shell 31. As a preferred technical solution, at least a part of the pressurizing surface 3421 protrudes radially outward to form a convex surface. In the embodiment, the inner side wall surface of the first outer cylinder portion 341 and the pressurizing surface 3421 of the first inner cylinder portion 342 cause the cross-sectional area of the air outlet channel 344 to gradually decrease from the air inlet end of the shell 31 to the air outlet end of the shell 31, which can play a secondary pressurizing role on the air, further increase the airflow velocity and the air supply distance, and enhance the air inlet suction. In addition, the first connecting plate 343 can further comb and transform the airflow passing through the air outlet shell 33, adjust the flow direction of the airflow, and further increase the air supply distance.

[0216] As shown in FIGS. 2-4, the axial distance D5 between the flared end 3622 of the hub 362 and the end of the first inner cylinder portion 342 towards the air inlet end of the housing 31 is between 0.5 mm and 3 mm. The axial distance D5 not only ensures that the fan blades 36 have a rotating space, i.e., does not limit or hinder the normal rotation of the fan blades 36, but also enables the air formed by the fan blades 36 to flow smoothly to the air outlet housing 34, thereby reducing the noise generated by turbulence.

[0217] As a preferred technical solution, a damping member, which is a rubber gasket, can be arranged between the assembly cylinder 361 and the motor assembly 321. The damping member can improve the stability of the structure, reduce noise, and improve the user experience.

[0218] In the embodiment, the first cover 348 is arranged at the end of the first inner cylinder portion 342 close to the air outlet end of the housing 31. As another embodiment, the first cover 348 can be replaced by a display screen. The display screen is used to display the power or wind speed of the fan, thereby further improving the user experience. As a preferred technical solution, the first cover 348 is a cover structure, which is fixedly or detachably arranged at the end of the first inner cylinder portion 342 towards the air outlet end of the housing 31. In the embodiment, the front surface 3481 of the first cover 348 is a plane.

[0219] As shown in FIGS. 2-1 and 2-2, the fan body further includes a base 2 and an electric control assembly. The fan head 3 is arranged on the base 2. In the embodiment, the base 2 is a hollow structure, and the electric control assembly is arranged in the base 2. The electric control assembly includes a charging battery pack, a charging board, a control circuit board, and the like. The electric control assembly is electrically connected to the fan assembly and is used to drive and control the operation of the fan assembly. The base 2 further includes a charging interface 71 and a control button 72 on the side wall close to the air outlet end of the housing 31. The control button 72 is electrically connected to the electric control assembly and is used to control the start-stop and wind speed adjustment of the fan assembly. The charging interface 71 is electrically connected to the electric control assembly and is used to charge the charging battery pack. The charging battery pack and the charging board can realize the portable fan power storage function. After charging, the fan does not need to be connected to an external power source, which is convenient for users to use in different temporary places and improves the user experience.

[0220] As a preferred technical solution, as shown in FIGS. 2-3, the mounting partition plate 345 is further provided with a wire hole 347, and the first connecting plate 343 close to the wire hole 347 is provided in a hollow structure. The wire hole 347 and the hollow first connecting plate 343 can be used for the wire electrically connected with the motor assembly 321 and the electric control assembly. One end of the wire is electrically connected with the motor assembly 321, and the other end can pass through the wire hole 347 of the mounting partition plate 345 and the hollow first connecting plate 343, enter the space between the air outlet shell 34 and the shell 31, and then enter the inside of the base 2 to be electrically connected with the electric control assembly after designing the wire in the space.

[0221] In the embodiment, the base 2 is a hollow structure, and the electric control assembly is arranged in the base 2. The electric control assembly includes a charging battery pack 73, a charging plate, a control circuit board and other elements. The electric control assembly is electrically connected with the fan assembly and is used to drive and control the operation of the fan assembly. The base 2 is further provided with a charging port 71 and a control button 72 on the side wall close to the air outlet end of the shell 31. The control button 72 is electrically connected with the electric control assembly and can control the start-stop and wind speed adjustment of the fan assembly through the electric control assembly. The charging port 71 is electrically connected with the electric control assembly and is used to charge the electric control assembly. Through the arrangement of the electric control assembly, the portable fan can store electricity. After charging, the user does not need to connect an external power supply, which is convenient for the user to use in different temporary places and improves the user experience.

[0222] As shown in FIGS. 2-9 to 2-11, the base 2 includes a seat body 21 with an open bottom and a bottom cover 22. The bottom cover 22 is detachably connected to the bottom of the seat body 21. In the embodiment, the bottom cover 22 and the seat body 21 are connected by screws. As shown in FIG. 16, the bottom cover 22 is provided with screw assembly positions 223 at four corners. It should be noted that the screw fixing mode is a preferred mode for achieving the detachable connection of the seat body 21 and the bottom cover 22, and is not limited in the application.

[0223] In the embodiment, the fan head 3 is installed on the top of the seat body 21. As a preferred technical solution, as shown in FIG. 2-11, the top of the seat body 21 is provided with a third arc-shaped recess 211. The third arc-shaped recess 211 is arranged to match the shape of the shell 31 of the fan head 3, so that the shell 31 can be attached to the third arc-shaped recess 211 on the seat body 21, and the overall structure of the fan is more compact.

[0224] As shown in FIG. 2-1, the clamping jaw structure in the embodiment is detachably arranged on the base 2 through the pressing buckle structure and the docking structure. The pressing buckle structure 8 is arranged on one of the base 2 and the fixed clamping piece 11, and the other of the base 2 and the fixed clamping piece 11 is provided with a docking structure capable of being buckled with the pressing buckle structure. The detachable arrangement of the fan body and the clamping jaw structure makes the fan body not only be able to be used alone or placed on the desktop, but also be able to be clamped on the desktop or the rod-shaped structure in cooperation with the clamping jaw structure, so that the portable fan can be applied to more use scenarios.

[0225] The pressing buckle structure in the embodiment is arranged on the base 2, as shown in FIG. 2-10. The pressing buckle structure includes the pressing buckle 8 and the first elastic piece 9. In the embodiment, the pressing buckle 8 and the first elastic piece 9 are both mounted in the base 2. The bottom cover 22 is provided with a sliding rail 221. In the embodiment, two pressing buckles 8 are arranged, and one first elastic piece 9 is arranged. The two pressing buckles 8 are oppositely arranged in the base 2 and are both slidingly mounted in the sliding rail 221. The two pressing buckles 8 can move towards each other or away from each other. In the embodiment, the first elastic piece 9 is a spring. The two ends of the first elastic piece 9 are respectively abutted between the two pressing buckles 8.

[0226] As shown in FIG. 2-10 and FIG. 2-11, the pressing buckle 8 in the embodiment includes a main body part 81, a pressing part 82 and a buckle part 83. The main body part 81 is slidingly mounted on the sliding rail 221. The pressing part 82 is arranged on one end of the main body part 81 and at least partially extends to the outside of the base 2, so as to facilitate the pressing operation of the user. The side wall of the base 2 is provided with a through hole for the pressing part 82 to extend out.

[0227] The other end of the main body part 81 abuts against the first elastic piece 9. The end of the main body part 81 abutting against the first elastic piece 9 is provided with a protruding column 84. The end of the first elastic piece 9 is sleeved on the protruding column 84. The arrangement of the protruding column 84 is beneficial to improve the mounting stability of the first elastic piece 9. In the embodiment, the two ends of the first elastic piece 9 are respectively sleeved on two protruding columns 84.

[0228] When the pressing parts 82 of the two pressing buckles 8 are pressed at the same time, the two pressing buckles move towards each other and compress the first elastic piece 9. When the pressing force on the pressing parts 82 is removed, the two pressing buckles 8 can move away from each other and reset under the elastic action of the first elastic piece 9.

[0229] As shown in FIG. 2-9, the buckle part 83 is arranged at the bottom of the main body part 81. The bottom cover 22 is provided with two openings for the buckle parts 83 of the two pressing buckles 8 to extend out. The buckle part 83 extends out of the base 2 and can be buckled with the docking structure on the fixed clamping piece 11.

[0230] As shown in FIG. 2-1, the jaw structure in the present application is the jaw structure described in the first embodiment of scheme 1. Specifically, as shown in FIGS. 2-12 to 2-15, the top of the fixed clamping piece 11 of the jaw structure in the present embodiment is provided with an assembly seat 16. In the present embodiment, the assembly seat 16 is detachably installed on the cover body 112 through a connecting piece 17. Specifically, the cover body 112 is provided with a mounting groove 1121, and the bottom of the mounting groove 1121 is provided with an opening. The connecting piece 17 abuts in the mounting groove 1121, and the connecting piece 17 cannot be detached from the top of the cover body 112. The connecting piece 17 is provided with a plurality of mounting through holes 171.

[0231] The bottom of the assembly seat 16 is provided with a connecting protrusion 161, which can be inserted into the opening at the bottom of the mounting groove 1121. The connecting protrusion 161 is provided with a plurality of connecting holes 162, and the number of the connecting holes 162 is the same as that of the mounting through holes 171. When the assembly seat 16 is installed on the cover body 112, the connecting protrusion 161 is inserted into the opening at the bottom of the mounting groove 1121, and the positions of the connecting holes 162 on the connecting protrusion 161 correspond to those of the mounting through holes 171 on the connecting piece 17. Screws or rivets are connected through the mounting through holes 171 and the connecting holes 162, so that the assembly seat 16 can be stably assembled on the cover body 112 through the connecting piece 17.

[0232] As shown in FIGS. 2-9 and 2-16, the buckle part 83 in the present embodiment is in the shape of "L", and the top of the assembly seat 16 is provided with an abutting part 163. In the present embodiment, an abutting structure is arranged on the abutting part 163. Specifically, the abutting part 163 is provided with an abutting recess 164. As shown in FIGS. 2-15 and 2-16, the abutting structure in the present embodiment includes two first clamping grooves 165 arranged on the two opposite inner side walls of the abutting recess 164, and the first clamping grooves 165 are horizontally recessed inward from the inner side walls of the abutting recess 164. The buckle part 83 can be clamped in the first clamping grooves 165. When the buckle parts 83 of the two pressing buckles 8 are clamped in the two first clamping grooves 165 respectively, the fan body can be fixedly assembled on the jaw structure.

[0233] When it is needed to disassemble the fan body from the assembling seat 16, the pressing portions 82 of the two pressing buckles 8 are pressed simultaneously, the two pressing buckles 8 move towards the pressing direction and compress the first elastic members 9, at this time, the buckle portions 83 can be detached from the abutting grooves 165, that is, the buckling state of the buckle portions 83 and the first buckling grooves 165 is released, at this time, the fan body can be taken off from the clamping jaw structure; when it is needed to assemble the fan body on the clamping jaw structure, the pressing portions 82 of the two pressing buckles 8 are pressed simultaneously, the first elastic members 9 are in the compressed state, the buckle portions 83 are placed in the first buckling grooves 165, the pressing of the pressing portions 82 is stopped, the first elastic members 9 drive the two pressing buckles 8 to reset, at this time, the two buckle portions 83 can be buckled in the two first buckling grooves 165 again, the stable assembly of the fan body and the clamping jaw structure is realized.

[0234] As a preferred technical solution, as shown in FIGS. 2-9, the bottom of the bottom cover 22 is provided with an abutting recess 222 for accommodating the abutting portion 163, the two openings of the bottom cover 22 for the buckle portions 83 to extend out are located on the bottom wall of the abutting recess 222, and the shape of the abutting recess 222 matches the abutting portion 163. In order to facilitate abutting, the abutting portion 163 is in the shape of a circular truncated cone in the embodiment, and correspondingly, the abutting recess 222 is also in the shape of a circular truncated cone. When it is needed to assemble the fan body on the clamping jaw structure, the abutting portion 163 can be placed in the abutting recess 222 of the bottom cover 22 first, the abutting recess 222 can play a positioning role on the clamping jaw structure, and then the buckle portions 83 can be quickly and accurately placed in the first buckling grooves 165.

[0235] As a preferred technical solution, the bottommost end of the bottom cover 22 is flush with the end of the buckle portion 83 towards the fixed clamping member 11, or the bottommost end of the bottom cover 22 downwardly exceeds the end of the buckle portion 83 towards the fixed clamping member 11, so that the setting of the buckle portion 83 does not affect the stable placement of the base on the desktop or the like plane for use.

[0236] As a preferred technical solution, as shown in FIGS. 2-9, the bottom of the bottom cover 22 is further provided with anti-skid pads 224 at four corners, the anti-skid pads 224 can be made of rubber material in the embodiment, and through the setting of the anti-skid pads 224, the fan body can play a good anti-skid and stable role when it is placed alone on the desktop for use.

[0237] In the embodiment, the clamping jaw structure and the fan body are detachably connected, so that people can select the use mode of the fan according to their own use needs, that is, not only can the fan body be clamped on the desktop or a rod-shaped object such as a guardrail of a baby carriage or a bedside guardrail for use, but also can be held for use in the form of hand-holding or placed alone on the desktop for use, which further expands the use scene of the fan.

[0238] The present application can easily separate the clamping jaw structure and the fan body or install the fan body on the clamping jaw structure by pressing the pressing buckle, so that the installation and disassembly of the fan body and the clamping jaw structure are very simple and fast.

[0239] In other embodiments, the clamping jaw structure can also be the clamping jaw structure described in the third embodiment of scheme 1. Specifically, as shown in FIGS. 2-17 to 2-19, the top of the cover body 112 is provided with a butt joint protrusion 18, and the butt joint protrusion 18 is provided with a clamping groove 181. In this embodiment, the butt joint structure includes two second clamping grooves 182, which are arranged on the two opposite inner side walls of the clamping groove 181, and the second clamping grooves 182 are formed by horizontally recessing the inner side walls of the clamping groove 181. The buckle part 83 can be clamped with the second clamping groove 182. When the buckle part 83 of the two pressing buckles 8 is clamped in the two second clamping grooves 182 of the clamping groove 181 respectively, the fan body can be fixedly assembled on the clamping jaw structure.

[0240] When it is necessary to disassemble the fan body from the fixed clamping part 11, the pressing parts 82 of the two pressing buckles 8 are pressed at the same time, the two pressing buckles 8 move towards the pressing direction and compress the first elastic member 9, at this time the buckle part 83 can be detached from the second clamping groove 182, that is, the clamping state of the buckle part 83 and the second clamping groove 182 is released, at this time the fan body can be taken off from the clamping jaw structure; when it is necessary to install the fan body on the clamping jaw structure, the pressing parts 82 of the two pressing buckles 8 are pressed at the same time, the first elastic member 9 is in a compressed state, the buckle part 83 is placed in the clamping groove 181, the pressing of the pressing part 82 is stopped, and the first elastic member 9 drives the two pressing buckles 8 to reset, at this time the two buckle parts 83 can be clamped in the two second clamping grooves 182 on the clamping groove 181, realizing the stable assembly of the fan body and the clamping jaw structure.

[0241] As shown in FIG. 2-1, the fan head 3 of the present embodiment is connected to the base 2 through the pitch adjustment structure 4. The setting of the pitch adjustment structure 4 can adjust the pitch angle of the fan head 3, so as to facilitate the adjustment of the blowing direction of the fan head 3, and improve the user experience.

[0242] As shown in FIGS. 2-20 to 2-26, it is a schematic diagram of the first embodiment of the pitch adjustment structure 4 of the present application. Specifically, in this embodiment, the end of the seat body 21 close to the air inlet end of the shell 31 is provided with a mounting position 212. In this embodiment, the mounting position 212 is a recess provided on the seat body 21, and two mounting positions 212 are arranged on the two opposite side walls of the end of the seat body 21, and the pitch adjustment structure 4 is mounted at the two mounting positions 212.

[0243] As shown in FIGS. 2-20 to 2-25, the pitch adjusting structure 4 in the embodiment comprises connecting shafts 41 and connecting arms 42. In the embodiment, a circular mounting recess 213 is arranged on the side wall of the seat body 21 at each mounting position 212, and the connecting shafts 41 are circular shafts arranged coaxially on the bottom wall of the mounting recess 213, with a certain spacing between the outer wall of the connecting shaft 41 and the side wall of the mounting recess 213, i.e. the diameter of the connecting shaft 41 is smaller than the diameter of the bottom wall of the mounting recess 213.

[0244] In the embodiment, two connecting arms 42 are arranged on the bottom of the fan head 3, specifically, the two connecting arms 42 are arranged on the outer side wall of the housing 31 and extend into the two mounting positions 212, and the connecting arms 42 are rotationally connected with the connecting shafts 41 in the embodiment.

[0245] As shown in FIG. 2-22, the connecting arm 42 in the embodiment comprises a main body portion 421, a connecting portion 422 and a sleeve portion 423, wherein the connecting portion 422 is arranged on the top of the main body portion 431 and detachably arranged on the outer side wall of the housing 31, as shown in FIGS. 23 and 24, the outer side wall of the housing 31 is provided with an assembly block 312 assembled with the connecting portion 422, and specifically, the connecting portion 422 is mounted on the assembly block 312 by screws in the embodiment, and it should be noted that the screw mounting mode is a preferred mode for detachable connection of the connecting block 422 and the assembly block 312, and is not limited in the application.

[0246] As a preferred technical solution, as shown in FIG. 2-24, two assembly blocks 312 are arranged on the outer side wall of the housing 31 in the embodiment, and the two assembly blocks 312 are arranged at intervals, so that an assembly groove 313 is formed between the two assembly blocks 312, and the connecting portion 422 is provided with a plug-in protrusion 424 which can be plugged into the assembly groove 313, when the connecting arm 42 is mounted, the plug-in protrusion 424 is plugged into the assembly groove 313 of the housing 31 to play a positioning role, and then the connecting portion 422 is fixedly connected to the outer side wall of the housing 31 by screws.

[0247] As shown in FIG. 2-23, the main body part 421 is provided with a connecting through hole 425 for inserting the connecting shaft 41, and a limiting step 426 is arranged at the end of the connecting through hole 425 away from the connecting shaft 41. As shown in FIG. 2-21, the end of the connecting shaft 41 close to the connecting arm 42 is detachably provided with a limiting piece 411. Specifically, the limiting piece 411 is in a circular sheet shape, and is coaxially arranged on the end of the connecting shaft 41, and the diameter of the limiting piece 411 is greater than the hole diameter of the connecting through hole 425, and the limiting piece 411 abuts against the limiting step 426. In the embodiment, the limiting piece 411 is arranged on the connecting shaft 41 by screws. It should be noted that the fixing mode of the screws is a preferred mode for achieving detachable connection of the limiting piece 411 and the connecting shaft 41, and does not limit the application.

[0248] When the connecting arm 42 is assembled with the connecting shaft 41, the connecting shaft 41 is first inserted through the connecting through hole 425 on the main body part 421, and then the limiting piece 411 is installed on the end of the connecting shaft 41 by screws, and the limiting piece 411 abuts against the limiting step 426. In the embodiment, the limiting piece 411 and the limiting step 426 are arranged to axially limit the connecting shaft 41 on the connecting arm 42.

[0249] As a preferred technical solution, the end of the connecting shaft 41 is provided with a positioning column 412, and the limiting piece 411 is provided with a positioning hole. When the limiting piece 411 is assembled with the connecting shaft 41, the positioning column 412 can be inserted into the positioning hole to achieve quick installation and positioning of the limiting piece 411 and the connecting shaft 41, thereby effectively improving the installation efficiency of the limiting piece 411 and the connecting shaft 41.

[0250] As shown in FIG. 2-22, the sleeve part 423 is arranged on the side wall of the main body part 421 close to the connecting shaft 41, and is located at the end of the connecting through hole 425. When the connecting shaft 41 is inserted through the connecting through hole 425 on the main body part 421, the sleeve part 433 can be inserted into the space between the outer wall of the connecting shaft 41 and the side wall of the mounting recess 213. The arrangement of the sleeve part 433 in the embodiment can further improve the stability of the assembly of the connecting shaft 41 and the connecting arm 42.

[0251] As a preferred technical solution, the main body part 421, the connecting part 422 and the sleeve part 423 are arranged in an integral molding structure.

[0252] As a preferred technical solution, as shown in FIG. 2-22, the outer side of the connecting arm 42 in the embodiment is further provided with an outer cover 43, the shape of the outer cover 43 matches the shape of the outer side wall of the connecting arm 42. The top of the outer cover 43 in the embodiment is provided with a plug-in block 431, and the outer shell 31 is provided with a plug-in groove 314 which is plugged with the plug-in block 431. By plugging the plug-in block 431 on the outer cover 44 into the plug-in groove 314 on the outer shell 31, the outer cover 43 can be fixedly installed on the outer shell 31, and then the outer cover 43 can be stably abutted on the outer side wall of the connecting arm 42.

[0253] When it is necessary to adjust the pitch angle of the fan head 3, the fan head 3 is rotated, the connecting arm 42 can rotate around the connecting shaft 41, and then the pitch angle of the fan head 3 can be changed. In order to fix the pitch angle of the fan head 3 after adjustment, and then ensure the blowing angle of the fan head 3 after adjustment, the pitch adjustment structure 4 further comprises a rotation positioning assembly.

[0254] As shown in FIG. 2-21 and FIG. 2-26, the rotation positioning assembly in the embodiment selects a friction plate 44, and the friction plate 44 in the embodiment is a rubber ring. It should be noted that the selection of the rubber material for the friction plate 44 in the embodiment is not limited by the present application, and other materials can also be selected for the friction plate 44, as long as the friction plate 44 can make the fan head 3 rotate with damping and realize the positioning and self-locking of the fan head 3.

[0255] Specifically, the friction plate 44 in the embodiment is arranged at the rotation connection position of the connecting shaft 41 and the connecting arm 42, and the friction plate 44 is sleeved on the connecting shaft 41. In the embodiment, the friction plate 44 is located between the limiting piece 411 and the limiting step 426. The friction plate 44 in the embodiment utilizes the friction force to make the fan head 3 rotate with damping, and after rotation, the fan head 3 can be positioned and self-locked. Through the arrangement of the friction plate 44, the stepless positioning and self-locking function of the fan head 3 can be realized.

[0256] As a preferred technical solution, in order to limit the rotation angle of the connecting arm 42 and prevent the rotation angle from being too large to cause collision and wear between structures, the pitch adjustment structure 4 in the embodiment further comprises a rotation angle limiting assembly. As shown in FIG. 2-21 and FIG. 2-22, the rotation angle limiting assembly in the embodiment comprises a limiting block 451 and a limiting groove 452, wherein the limiting block 451 is arranged on the outer top of the sleeve portion 423, and the limiting groove 452 is arranged on the outer side wall of the seat body 21 and communicates with the installation recess 213. The limiting groove 452 is an arc-shaped groove, and the length of the limiting groove 452 can be limited according to actual needs, and then the angle range of the rotation of the connecting arm 42 can be limited.

[0257] As shown in FIG. 2-26, two mounting positions 212 for mounting the pitch adjusting structure 4 are arranged on both sides of the end of the seat body 21. In order to reasonably utilize the space of the seat body 21, the charging battery pack 73 of the electric control assembly in this embodiment is two charging lithium batteries, and the two charging lithium batteries are arranged together and located at a position between the two mounting positions 212 on the seat body 21.

[0258] The wire layout for electrically connecting the electric control assembly and the fan assembly is reasonably arranged in this embodiment, so that the structural layout of the fan body in this embodiment is more reasonable and compact. Specifically, a plurality of recesses 311 are arranged on the inner wall of the shell 31 along the circumference of the shell 31. As shown in FIG. 2-23, the connecting arm 42 is provided with a wire channel 427 for the power line. In this embodiment, the connecting shaft 41 is hollow and communicates with the inside of the shell 31, and the limiting piece 411 is also provided with an opening for the power line.

[0259] The wire layout for electrically connecting the fan assembly and the electric control assembly in this embodiment is as follows: one end of the wire is electrically connected to the fan assembly, the other end of the wire first passes through the air outlet shell 34 into the recess 311 of the shell 31, and then passes out of the plug-in slot 314 on the shell 31 into the wire channel 427 of the connecting arm 42, and then successively passes through the opening on the limiting piece 411 and the inside of the connecting shaft 41 into the inside of the base 2, and is electrically connected to the electric control assembly.

[0260] The pitch of the fan head 3 can be adjusted by the arrangement of the pitch adjusting structure 4 in this embodiment, and the stepless positioning self-locking of the fan head 3 can be realized by the arrangement of the friction plate 44, which can greatly improve the user experience. In addition, the wire layout in this embodiment is matched with the pitch adjusting structure 4, which can greatly improve the stability and aesthetics of the wire layout.

[0261] As shown in FIGS. 2-27 to 2-30, FIGS. 2-27 to 2-30 are schematic views of a second embodiment of the pitch adjusting structure 4 of the present application. Specifically, as shown in FIG. 2-28, the end of the seat body 21 near the air inlet end of the shell 31 is provided with a mounting position 212. In this embodiment, the mounting position 212 is provided with one, and the mounting position 212 is located at the middle position of the end of the seat body 21. The pitch adjusting structure 4 is mounted on the mounting position 212.

[0262] As shown in FIGS. 2-28 to 2-29, the seat body 21 is provided with a first mounting seat 214 on the side wall of the mounting position 212. The first mounting seat 214 is mounted on the seat body 21 by screws or rivets. It should be noted that the screw or rivet fixing mode is a preferred mode for realizing the detachable connection between the first mounting seat 214 and the seat body 21, and does not limit the present application.

[0263] As shown in FIG. 2-29, the first mounting seat 214 in the embodiment is provided with a circular mounting recess 213 on each of the two opposite side walls, the connecting shaft 41 in the embodiment is a circular shaft, and two connecting shafts 41 are coaxially arranged on the first mounting seat 214 and located on the bottom walls of the two mounting recesses 213, respectively.

[0264] The two connecting arms 42 in the embodiment are arranged on the bottom of the fan head 3, specifically, the two connecting arms 42 are arranged on the outer side walls of the shell 31, the two connecting arms 42 extend into the mounting position 212 and are located on the two sides of the first mounting seat 214, respectively, and the connecting arm 42 is rotationally connected with the connecting shaft 41.

[0265] The specific structure of the connecting shaft 41, the connecting arm 42, the outer cover 43, and the rotation positioning assembly in the embodiment is the same as that described in the first embodiment of the pitch adjustment structure 4 of the application, and will not be repeated here.

[0266] As a preferred technical solution, the rotation angle of the connecting arm 42 is also limited in the embodiment to prevent the rotation angle from being too large and causing collision and wear between structures. The pitch adjustment structure 4 in the embodiment further comprises a rotation angle limiting assembly. The rotation angle limiting assembly in the embodiment comprises a limiting block 451 and a limiting groove 452, wherein the limiting block 451 is arranged on the outer top of the sleeve portion 423, and the limiting groove 452 is an arc-shaped gap provided on the side wall of the mounting recess. The length of the arc-shaped gap can be limited according to actual needs, thereby limiting the angle range of the rotation of the connecting arm 42.

[0267] The mounting position 212 for mounting the pitch adjustment structure 4 is arranged at the middle position of the end of the seat body 21 in the embodiment. In order to reasonably utilize the space of the seat body 21, the charging battery pack 73 of the electronic control assembly in the embodiment is a two-section charging lithium battery, and the two-section charging lithium battery is arranged on the two sides of the first mounting seat 214, respectively.

[0268] The embodiment reasonably arranges the wire layout for electrically connecting the electric control assembly and the fan assembly, so that the structural layout of the fan body in the embodiment is more reasonable and compact. One end of the wire is electrically connected with the fan assembly, and the other end extends into the seat body through the pitch adjusting structure and is electrically connected with the electric control assembly. Specifically, as shown in FIG. 2-30, the connecting arm 42 is provided with a wire channel 427 for the wire to pass through, one end of the wire channel 427 is in communication with the inside of the shell 31, and the other end is in communication with the connecting hole 425 of the main body part 421, the connecting shaft 41 is hollow, and the limiting part 411 is provided with a first wire opening 413 for the wire to pass through; the first mounting seat 214 is provided with a wire passing channel 215, the wire passing channel 215 connects the two connecting shafts 41 on the first mounting seat 214, the bottom of the wire passing channel 215 is provided with a second wire opening 216, and the installation position 212 is provided with a third wire opening 217.

[0269] In the embodiment, the wire layout for electrically connecting the fan assembly 32 and the electric control assembly is as follows: one end of the wire is electrically connected with the fan assembly, and the other end first passes through the air outlet shell 34, enters the recess 311 of the shell 31, and then passes out from the insertion slot 314 on the shell 31 and enters the wire channel 427 of the connecting arm 42, and then successively passes through the first wire opening 413 on the limiting part 411, the inside of the connecting shaft 41, the wire passing channel 215 of the first mounting seat 214, the second wire opening 216 of the wire passing channel 215, and the third wire opening 217 at the installation position to extend into the seat body.

[0270] Compared with the setting of the pitch adjusting structure 4 described in the first embodiment of the present application, the setting of the pitch adjusting structure 4 described in the second embodiment of the present application is more concentrated and compact, which is beneficial to reduce the volume of the fan body, so that the fan body is more lightweight and portable.

[0271] Scheme 3, see FIGS. 3-1 to 3-16

[0272] The embodiment is an embodiment of a portable fan, as shown in FIGS. 3-1 and 3-2, which comprises a fan body, the fan body comprising a base 2, a fan head 3, and a pitch adjusting structure 4, the fan head 3 being rotatably arranged on the base 2 through the pitch adjusting structure 4.

[0273] The fan head 3 is used for blowing and cooling, and specifically, as shown in FIG. 3-1, the fan head 3 comprises a shell 31, a fan assembly, an air inlet shell 33, and an air outlet shell 34, wherein the shell 31 is a cylindrical structure with two open ends, one end of the shell 31 is an air inlet end, and the other end is an air outlet end, the air inlet shell 33 is connected to the air inlet end of the shell 31, and the air outlet shell 34 is connected to the air outlet end of the shell 31.

[0274] The air inlet shell 33 in the embodiment is provided as a cylindrical structure with one open end, and the open end of the air inlet shell 33 is assembled and connected with the air inlet end of the shell 31. A plurality of air inlet holes 331 are arranged on the side wall of the air inlet shell 33. As a preferred technical solution, the air inlet shell 33 is provided with a filter screen. The arrangement of the filter screen can improve the cleanliness of the air outlet and effectively prevent dust or particulate matter from harming the user.

[0275] The fan assembly is arranged inside the shell 31. Specifically, the fan assembly includes a motor assembly and a fan blade. The motor assembly is installed on one side of the air outlet shell 34 facing the air inlet end of the shell 31. The motor assembly is used to drive the fan blade to rotate. The fan blade is connected to the output shaft of the motor assembly.

[0276] As shown in FIGS. 3-1 and 3-2, the fan head in the embodiment further includes a support seat 5 installed at the bottom of the shell 31. The support seat 5 in the embodiment is a hollow structure. Specifically, the support seat 5 includes a cover body 51 and a cover body 52. The top end of the cover body 51 is fixedly connected with the bottom of the shell 31. As a preferred technical solution, the cover body 51 and the shell 31 are provided as an integrally formed structure. The bottom of the cover body 51 is provided as an open structure. The cover body 52 can be detachably connected to the bottom end of the cover body 51. In the embodiment, the cover body 52 is assembled to the bottom end of the cover body 51 by screws or rivets. It should be noted that the screw or rivet fixing mode is a preferred mode for achieving the detachable connection of the cover body 52 and the cover body 51, and does not limit the application.

[0277] The support seat 5 in the embodiment is provided with an electric control assembly including a charging battery pack, a charging panel, a control circuit board and other elements. The electric control assembly is electrically connected with the fan assembly and is used to drive and control the operation of the fan assembly. The side wall of the support seat 5 close to the air outlet end of the shell 31 is further provided with a charging port 71 and a control button 72. The control button 72 is electrically connected with the electric control assembly. The control button 72 can control the start-stop and wind speed adjustment of the fan assembly through the electric control assembly. The charging port 71 is electrically connected with the electric control assembly. The charging port 71 is used to charge the electric control assembly. Through the arrangement of the electric control assembly, the portable fan can store electricity. After charging, the fan does not need to be connected with an external power source, which is convenient for the user to use in different temporary places and improves the user experience.

[0278] The electric wire layout for connecting the fan assembly and the electric control assembly in the embodiment is simple and compact. Specifically, the bottom of the air outlet end of the shell 31 is provided with an electric wire through hole. One end of the electric wire is electrically connected with the fan assembly, and the other end passes through the electric wire through hole on the shell 31 and enters the inside of the support seat 5 to be electrically connected with the electric control assembly.

[0279] As shown in FIG. 3-3 and FIG. 3-4, the base 2 in the embodiment includes a seat body 21 and a bottom cover 22. The seat body 21 is hollow and has an open bottom, and the bottom cover 22 is detachably connected to the bottom of the seat body 21. In the embodiment, the bottom cover 22 and the seat body 21 are connected by screws or rivets. It should be noted that the screw or rivet fixing mode is a preferred mode for achieving detachable connection of the seat body 21 and the bottom cover 22, and does not limit the application.

[0280] As shown in FIG. 3-3, the seat body 21 in the embodiment is formed by butting two half seats. Specifically, the bottom cover 22 is provided with a clamping groove 221, and the two half seats of the seat body 21 are each provided with a clamping half column 211. The two clamping half columns 211 can form a complete column structure after being butted, and the complete column structure formed by the two clamping half columns 211 can be inserted into the clamping groove 221.

[0281] When the bottom cover 22 and the seat body 21 need to be assembled, the two half seats of the seat body 21 are first butted, and the complete column structure formed by the two clamping half columns 211 after being butted is inserted into the clamping groove 221, or the two clamping half columns 211 are sequentially inserted into the clamping groove 221. The two clamping half columns 211 and the clamping groove 221 can be used for positioning and butting the seat body 21 and the bottom cover 22, and then the seat body 21 and the bottom cover 22 are stably connected together by screws or rivets.

[0282] In the embodiment, the fan head 3 is rotatably connected to the base 2 by the pitch adjustment structure 4. The pitch adjustment structure 4 can adjust the pitch angle of the fan head 3, thereby facilitating adjustment of the blowing direction of the fan head 3 and improving the user experience.

[0283] As shown in FIG. 3-5 and FIG. 3-6, the pitch adjustment structure 4 in the embodiment includes a connecting shaft 41 and a connecting arm 42, and the connecting arm 42 is rotatably sleeved on the connecting shaft 41. In the embodiment, the connecting shaft 41 is arranged on the fan head 3, and the connecting arm 42 is arranged on the base 2. Of course, in other embodiments, the connecting shaft 41 can be arranged on the base 2, and the connecting arm 42 can be arranged on the fan head 3.

[0284] Specifically, in the embodiment, the connecting shaft 41 is arranged on the support seat 5. In the embodiment, the left and right two opposite outer side walls of the support seat 5 are each provided with a connecting shaft 41. Specifically, as shown in FIG. 3-6 and FIG. 3-8, the left and right two outer side walls of the support seat 5 are each provided with a circular mounting recess 53. In the embodiment, the connecting shaft 41 is a circular shaft, and two connecting shafts 41 are arranged coaxially on the bottom walls of the two mounting recesses 53. The outer wall of the connecting shaft 41 is spaced apart from the side wall of the mounting recess 213, that is, the diameter of the connecting shaft 41 is smaller than the diameter of the bottom wall of the mounting recess 53.

[0285] As shown in FIG. 3-5 and FIG. 3-6, two connecting arms 42 are arranged in the embodiment, and the two connecting arms 42 are respectively arranged on the two half seats of the seat body 21 and are respectively rotatably sleeved on the two connecting shafts 41. Specifically, the lower part of the connecting arm 42 is fixedly connected with the edge of the half seat in the embodiment, and as a preferred technical solution, the connecting arm 42 is integrally formed with the half seat in the embodiment.

[0286] As shown in FIG. 3-3 and FIG. 3-4, the upper part of the connecting arm 42 is provided with an assembly through hole 421 for inserting the connecting shaft 41, and the assembly through hole 421 is provided with an assembly step 422 near the end of the connecting shaft 41 in the embodiment. The mounting convex ring 54 is arranged at the port of the mounting recess 53 on the support seat 5. When the connecting arm 42 is assembled on the support seat 5, the connecting shaft 41 is inserted into the assembly through hole 421, and the mounting convex ring 54 on the support seat 5 abuts against the assembly step 422. The arrangement of the mounting convex ring 54 and the assembly step 422 improves the stability of the connecting arm 42 assembled on the connecting shaft 41.

[0287] In order to fix the pitch angle of the fan head 3 after adjustment, and further ensure the blowing angle of the fan head 3 after adjustment. As shown in FIG. 3-5, FIG. 3-6 and FIG. 3-9, the pitch adjustment structure 4 further comprises a pressing piece 43 in the embodiment, and the pressing piece 43 is assembled on the connecting shaft 41 and located between the connecting shaft 41 and the assembly through hole 421 of the connecting arm 42. The pressing piece 43 is circumferentially limited on the connecting shaft 41 in the embodiment, that is, the pressing piece 43 can rotate with the connecting shaft 41, and the pressing piece 43 can move along the axial direction of the connecting shaft 41 in the embodiment.

[0288] As shown in FIG. 3-8 and FIG. 3-9, the outer side wall of the connecting shaft 41 is provided with a limiting strip 411 in the form of a strip in the embodiment, and the limiting strip 411 is arranged on the outer side wall of the connecting shaft 41 along the axial direction of the connecting shaft 41. The pressing piece 43 is provided with a limiting groove 431, and the limiting groove 431 is a strip-shaped groove in the embodiment. The limiting strip 411 and the limiting groove 431 are slidably connected in the axial direction of the connecting shaft. When the pressing piece 43 is assembled on the connecting shaft 41, the limiting strip 411 is located in the limiting groove 431. Through the cooperation of the limiting strip 411 and the limiting groove 431, the pressing piece 43 is rotationally limited on the connecting shaft 41, but the pressing piece 43 can move along the axial direction of the connecting shaft 41.

[0289] As a preferred technical solution, the inner side wall of the mounting recess 53 and the inner side wall of the assembly through hole 421 are smoothly transitioned in the embodiment, so that part of the pressing piece 43 can move into the mounting recess 53. This arrangement can further improve the compactness of the structure of the pitch adjustment structure 4.

[0290] As a preferred technical solution, as shown in FIGS. 3-8, two limiting strips 411 are arranged in the embodiment, and the two limiting strips 411 are respectively arranged at the top and bottom of the connecting shaft 41. Correspondingly, two limiting grooves 431 are arranged. In the embodiment, the arrangement of the two sets of limiting strips 411 and limiting grooves 431 can improve the stability of the axial movement of the pressing piece 43 along the connecting shaft 41.

[0291] In the embodiment, the pressing piece 43 and the connecting arm 42 are respectively provided with first locking pieces and second locking pieces capable of being locked with each other. When the first locking pieces and the second locking pieces are locked with each other, the fan head 3 is in a state of being unable to rotate. When the pressing piece 43 is moved to separate the first locking pieces and the second locking pieces from each other, the fan head 3 can rotate relative to the base 2.

[0292] As shown in FIG. 3-9, the first locking pieces are a plurality of protrusions 432 arranged on the outer side wall of the pressing piece 43 in a circumferential direction. In the embodiment, the plurality of protrusions 432 are arranged on the outer side wall of the end portion of the pressing piece 43 facing the connecting shaft 41. As shown in FIGS. 3-3 and 3-4, the second locking pieces are a plurality of limiting teeth 423 arranged on the inner wall of the assembly through hole 421 of the connecting arm 42 in a circumferential direction. The plurality of protrusions 432 can be engaged with the plurality of limiting teeth 423.

[0293] As shown in FIG. 3-3, the assembly through hole 421 of the connecting arm 42 away from the connecting shaft 41 is provided with a limiting ring 424. The limiting ring 424 can abut against the end portion of the protrusion 432. In the embodiment, the arrangement of the limiting ring 424 can prevent the pressing piece 43 from being separated from the assembly through hole 421 of the connecting arm 42. When the protrusions 432 on the pressing piece 43 are engaged with the limiting teeth 423 on the assembly through hole 421, the pressing piece 43 partially extends out of the assembly through hole 421 of the connecting arm 42. This arrangement facilitates the pressing operation of the user.

[0294] When the limiting teeth 423 are engaged with the protrusions 432, the connecting shaft 41 and the pressing piece 43 cannot rotate relative to the connecting arm 42. At this time, the pitch angle of the fan head 3 is in a locked state. When the pressing piece 43 is pressed to move the pressing piece 43 along the axial direction of the connecting shaft 41 to the direction of the support base 5, the protrusions 432 on the pressing piece 43 are disengaged from the limiting teeth 423 on the connecting arm 42, that is, the engagement between the limiting teeth 423 and the protrusions 432 is released. At this time, the connecting arm 42 and the connecting shaft 41 can rotate relative to each other, thereby adjusting the pitch angle of the fan head 3. After the pitch angle of the fan head 3 is adjusted, the pressing piece 43 is reset, so that the protrusions 432 on the pressing piece 43 are re-engaged with the limiting teeth 423 of the connecting arm 42, to fix the adjusted pitch angle of the fan head 3.

[0295] As shown in FIGS. 3-5 and 3-6, the pitch adjusting structure 4 in the embodiment further comprises a first elastic member 44, which is a spring in the embodiment. The first elastic member 44 abuts against the pressing member 43. When the pressing member 43 is pressed, the pressing member 43 moves towards the pressing direction and compresses the first elastic member 44. When the pressing state of the pressing member 43 is released, the pressing member 43 can be reset under the action of the first elastic member 44.

[0296] Specifically, the end face of the connecting shaft 41 towards the pressing member 43 is provided with a slot 413, and the first elastic member 44 is located in the slot 413. One end of the first elastic member 44 abuts against the bottom wall of the slot 413, and the other end of the first elastic member 44 abuts against the pressing member 43. As a preferred technical solution, the slot 413 of the connecting shaft 41 is provided as a through slot in the embodiment. When the slot 413 of the connecting shaft 41 is provided as a through slot, the end of the first elastic member 44 abuts against the bottom wall of the mounting recess 53.

[0297] As a preferred technical solution, as shown in FIG. 3-8, the inner side wall of the slot 413 is provided with a plurality of support strips 412 along the circumference of the connecting shaft 41. The support strips 412 can stabilize the first elastic member 44.

[0298] In other embodiments, the pressing member 43 can also be manually reset. As an implementation, a pull ring can be provided on the outer end face of the pressing member 43, and the pressing member 43 can be manually reset through the pull ring.

[0299] When it is necessary to adjust the pitch angle of the fan head 3, the pressing member 43 is pressed, the pressing member 43 moves towards the pressing direction and compresses the first elastic member 44. In the embodiment, the pressing member 43 can move into the mounting recess 53. The protruding teeth 432 on the pressing member 43 disengage from the limiting teeth 423 on the assembly through hole 421, at this time, the fan head 3 can rotate relative to the base 2, and the pitch angle of the fan head 3 can be adjusted. When the pitch angle of the fan head 3 is adjusted, the pressing of the pressing member 43 is released, and the pressing member 43 is reset under the action of the first elastic member 44. The protruding teeth 432 on the pressing member 43 and the limiting teeth 423 on the assembly through hole 421 re-engage and lock, at this time, the fan head 3 cannot rotate relative to the base 2, and the pitch angle of the fan head 3 can be positioned and locked.

[0300] In the embodiment, the motor assembly and the fan blades of the fan head 3 are built-in in the housing 31, so that the entire fan head 3 is heavy. In addition, the air inlet end of the housing 31 is further provided with a separate air inlet shell 33, which increases the size of the entire fan head 3. The filter screen is further arranged in the air inlet shell 33, which further increases the weight of the fan head 3.

[0301] It can be seen that compared with the traditional axial fan, the fan head 3 in the embodiment has a heavier weight, and the use of the pitch adjustment structure 4 in the embodiment can effectively ensure the structural strength of the entire portable fan. Specifically, two connecting arms 42 are arranged on the base 2 in the embodiment, and the two connecting arms 42 are rotatably arranged on both sides of the fan head 3, which can effectively ensure the assembly stability of the fan head 3. Through the cooperation of the pressing piece 43, the first elastic piece 44, the first locking piece and the second locking piece, the engagement and locking state of the first locking piece and the second locking piece is released by pressing the pressing piece 43, so that the pitch angle of the fan head 3 can be adjusted. After adjustment, only the pressing of the pressing piece 43 needs to be released, and the first locking piece and the second locking piece can be re-engaged and locked through the resetting action of the first elastic piece 44. The pitch adjustment structure 4 in the embodiment can effectively stabilize the pitch position of the fan head 3 through the tooth engagement, thereby effectively ensuring the structural stability of the entire portable fan.

[0302] As a preferred technical solution, the outer top of the seat body 21 is upwardly raised to form a slope-shaped structure, and the raised portion 212 is arranged on the seat body 21. When the fan head 3 is rotated to the maximum angle, the bottom of the support seat 5 can abut against the raised portion 212 of the seat body 21. The arrangement of the raised portion 212 in the embodiment can limit the rotation range of the fan head 3 to a certain extent, preventing the rotation angle from being too large and causing damage or collision to the structure.

[0303] In order to reasonably utilize the internal space of the support seat 5, the charging battery pack 73 is arranged at the middle position of the support seat 5 in the embodiment.

[0304] In other embodiments, the electric control assembly can also be arranged inside the base 2.

[0305] As shown in FIGS. 3-10 and 3-11, the portable fan in the embodiment further includes a clamping jaw structure. The clamping jaw structure in the embodiment is the clamping jaw structure in the first embodiment described in solution 1. The clamping jaw structure in the embodiment is detachably connected to the fan body. Specifically, the clamping jaw structure in the embodiment is detachably arranged on the base through the pressing buckle structure and the docking structure. Such arrangement enables people to select the use mode of the fan according to their own use needs, i.e., the fan body can be clamped on a desktop or a rod-shaped object such as a guardrail of a baby carriage or a bedside guardrail for use, and the fan body can also be held in a handheld form for use or placed on a desktop for use, thereby further expanding the use scenarios of the fan.

[0306] The pressing buckle structure is arranged on the base 2, and the docking structure is arranged on the fixed clamping piece 11. The pressing buckle structure can be engaged with the docking structure, and the detachable connection between the fan body and the clamping jaw structure is realized through the arrangement of the pressing buckle structure and the docking structure.

[0307] Specifically, two sets of pressing buckle structures are arranged in the embodiment, and the two sets of pressing buckle structures are oppositely arranged on the base 2. Specifically, as shown in FIG. 3-3, the pressing buckle structure includes a pressing buckle 8 and a second elastic member 9. The pressing buckle 8 is movably arranged on the base 2, and the pressing buckle 8 can be clamped with the docking structure. The second elastic member 9 abuts against the pressing buckle 8, and is used to drive the pressing buckle 8 to reset.

[0308] When the two pressing buckles 8 are pressed, the two pressing buckles 8 move towards the pressing direction respectively and compress the corresponding second elastic members 9. At this time, the two pressing buckles 8 can be unclamped with the docking structure, and then the fan body can be separated from the clamping jaw structure. When the pressing of the two pressing buckles 8 is stopped, the two pressing buckles 8 can reset under the action of the corresponding second elastic members 9.

[0309] In the embodiment, the clamping jaw structure is detachably arranged on the base 2 through the pressing buckle structure and the docking structure. Such an arrangement enables people to select the use mode of the fan according to their own use requirements, that is, the fan body can be clamped on the desktop or the rod-shaped object for use, and the rod-shaped object can be, for example, the guardrail of a baby carriage or the bedside guardrail. In addition, the fan body can also be held in a handheld form for use or placed on the desktop for use, which further expands the use scene of the fan. In addition, in the embodiment, two sets of pressing buckle structures are arranged on the base 2. Only when both of the two pressing buckles are unclamped with the docking structure, the fan body can be separated from the clamping jaw structure. Such an arrangement can further improve the safety of the separation of the fan body and the clamping jaw structure, which can prevent the separation of the two due to accidental touch and can prevent the separation of the two by the baby unintentionally.

[0310] In the embodiment, the pressing buckle 8 is at least partially located in the base 2. Specifically, as shown in FIG. 3-3, FIG. 3-5 and FIG. 3-7, the pressing buckle 8 includes a main body part 81, a pressing part 82 and a buckle part 83. The main body part 81 is movably arranged in the base 2. The pressing part 82 is fixedly arranged on the main body part 81, and the pressing part 82 is at least partially protruded to the outside of the base 2. The arrangement of the pressing part 82 facilitates the pressing operation of the user. The sidewall of the base 2 is provided with a through hole 23 for the pressing part 82 to protrude.

[0311] As shown in FIG. 3-5 and FIG. 3-12, the buckle part 83 is arranged at the bottom of the main body part 81. The bottom of the base 2 is provided with a bottom opening 225 for the buckle part 83 to protrude. Specifically, the bottom opening 225 is arranged on the bottom cover 22. The buckle part 83 protrudes to the outside of the base 2 through the bottom opening 225 and is clamped with the docking structure on the fixed clamping member.

[0312] As a preferred technical solution, the main body part 81, the pressing part 82 and the buckle part 83 are arranged in an integral molding structure in the embodiment.

[0313] In this embodiment, a limiting component is further provided inside the base 2 for restricting the main body portion 81 to move only along the pressing direction, so as to improve the stability of the main body portion 81 arranged inside the base 2. Specifically, as shown in FIGS. 3-3 and 3-4, the limiting component in this embodiment is set as a receiving frame 2131 and a docking limiting plate 218. The receiving frame 2131 is arranged on the inner top of the seat body 21, and part of the main body portion 81 is located inside the receiving frame 2131. The docking limiting plate 218 is located on the bottom cover 22. When the seat body 21 and the bottom cover 22 are assembled together, the docking limiting plate 218 can abut against the side of the receiving frame 2131 to form a receiving cavity, and the main body portion 81 in this embodiment moves and is located inside the receiving cavity. Through the arrangement of the receiving frame 2131 and the docking limiting plate 218, a limiting effect can be exerted on the main body portion 81, so that the main body portion 81 can only move along the pressing direction, which is beneficial to improving the stability of the main body portion 81 moving inside the base 2.

[0314] As a preferred technical solution, a slide rail 222 is provided inside the bottom cover 22 in this embodiment, and the main body portion 81 is slidably arranged on the slide rail 222. The arrangement of the slide rail 222 can improve the smoothness of the movement of the main body portion 81.

[0315] As shown in FIGS. 3-4 and 3-7, a abutting member 2141 is provided inside the base 2 in this embodiment. One end of the second elastic member 9 abuts against the pressing portion 82, and the other end abuts against the abutting member 2141. In this embodiment, the abutting member 2141 is fixedly arranged on the inner top of the seat body 21 and is located inside the receiving frame 2131. As a preferred technical solution, the abutting member 2141 has a "C" - shaped structure, and the open side of the abutting member 2141 faces the end of the second elastic member 9.

[0316] As shown in FIG. 3-7, a supporting limiting member 223 is further provided on the bottom cover 22, and a limiting opening 811 through which the supporting limiting member 223 can pass is provided on the main body portion 81. As a preferred technical solution, two relatively arranged and spaced - apart support plates are provided as the supporting limiting member 223 in this embodiment. The supporting limiting member 223 is located below the second elastic member 9, and thus can abut and support the bottom of the second elastic member 9. In addition, the limiting opening 811 can also limit the movement displacement of the main body portion 81, restrict the pressing displacement and the reset displacement of the pressing buckle 8, and thus ensure the stability of the pressing buckle 8 arranged inside the base 2.

[0317] The second elastic member 9 is a spring in this embodiment. As a preferred technical solution, a first support column 821 is provided on the side wall of the pressing portion 82 abutting against the second elastic member 9 or / and a second support column is provided on the side wall of the abutting member 2141 abutting against the second elastic member 9. The first support column 821 and the second support column can extend into both ends of the second elastic member 9. Through the arrangement of the first support column 821 and the second support column, a supporting and stabilizing effect can be exerted on the second elastic member 9.

[0318] In the embodiment, the first supporting column 821 is arranged on the side wall of the pressing part 82 abutting against the second elastic member 9. Of course, in other embodiments, the second supporting column can be arranged on the side wall of the abutting part 2141 abutting against the second elastic member 9, or the first supporting column 821 is arranged on the side wall of the pressing part 82 abutting against the second elastic member 9, and the second supporting column is arranged on the side wall of the abutting part 2141 abutting against the second elastic member 9.

[0319] As shown in FIGS. 3-4, the inner part of the base 2 is further provided with an abutting plate 2151. In the embodiment, the abutting plate 2151 is fixedly arranged on the inner top of the seat body 21, and the abutting plate 2151 is located in the inner part of the abutting part 2141. In the embodiment, the abutting plate 2151 is arranged adjacent to the upper part of the second elastic member 9, and the abutting plate 2151 can abut against the top of the second elastic member 9. The arrangement of the supporting limiting part 223, the first supporting column 821 and the abutting plate 2151 can improve the stability of the second elastic member 9, so that the second elastic member 9 can stably drive the pressing buckle 8 to reset.

[0320] In the embodiment, two sets of pressing buckle structures are arranged. Correspondingly, the abutting part 2141, the abutting plate 2151, the containing frame 2131, the abutting limiting plate 218 and the sliding rail 222 and other structures arranged in cooperation with the pressing buckle structure are also arranged in two sets.

[0321] When the pressing parts 82 of the two pressing buckles 8 are pressed, the two pressing buckles 8 move towards the pressing direction and compress the corresponding second elastic members 9. At this time, the two pressing buckles 8 can be disengaged from the clamping state with the abutting structure, so that the fan body can be separated from the clamping jaw structure. When the pressing of the two pressing buckles 8 is stopped, the two pressing buckles 8 can reset under the action of the corresponding second elastic members 9.

[0322] As shown in FIGS. 3-13 to 3-16, the top of the fixed clamping part 11 of the clamping jaw structure is provided with an assembly seat 16. In the embodiment, the assembly seat 16 is detachably mounted on the cover body 112 through a connecting part 17. Specifically, the cover body 112 is provided with a mounting groove 1121, and the bottom of the mounting groove 1121 is provided with an opening. The connecting part 17 abuts in the mounting groove 1121, and the connecting part 17 cannot be detached from the top of the cover body 112. The connecting part 17 is provided with a plurality of mounting through holes 171.

[0323] The bottom of the assembly seat 16 is provided with a connecting protrusion 161 which can be inserted into the opening at the bottom of the mounting groove 1121, and a plurality of connecting holes 162 are arranged on the connecting protrusion 161. In the embodiment, the number of the connecting holes 162 is the same as the number of the mounting through holes 171. When the assembly seat 16 is mounted on the cover part 112, the connecting protrusion 161 is inserted into the opening at the bottom of the mounting groove 1121, the positions of the connecting holes 162 on the connecting protrusion 161 correspond to the positions of the mounting through holes 171 on the connecting piece 17, and the screws or rivets are connected through the mounting through holes 171 and the connecting holes 162, so that the assembly seat 16 can be stably assembled on the cover part 112 through the connecting piece 17.

[0324] Specifically, the buckle part 83 is in an "L" shape in the embodiment, and the abutting structure is arranged on the assembly seat 16 in the embodiment. Specifically, the abutting structure is a first clamping groove 165, and the top of the assembly seat 16 is provided with an abutting part 163, and the abutting part 163 is provided with the first clamping groove 165 which is horizontally recessed inward at the inner side walls of the two ends of the clamping recess 164. When the buckle parts 83 of the two pressing buckles 8 are clamped in the two first clamping grooves 165 on the assembly seat 16 respectively, the fan body can be fixedly assembled on the claw structure.

[0325] As a preferred technical solution, as shown in FIGS. 3-12, the bottom of the bottom cover 22 is provided with an abutting recess 224 for accommodating the abutting part 163, and the shape of the abutting recess 224 matches the abutting part 163. In order to facilitate abutting, the abutting part 163 is in a circular truncated cone shape in the embodiment, and the two openings on the bottom cover 22 for the buckle part 83 to extend out are located in the abutting recess 224. When the fan body needs to be assembled on the claw structure, the abutting part 163 can be placed in the abutting recess 224 of the bottom cover 22 first, and the abutting recess 224 can position the claw structure, so that the buckle part 83 can be quickly and accurately placed in the first clamping groove 165.

[0326] As a preferred technical solution, the bottom of the buckle part 83 does not exceed the bottommost part of the base 2 downward in the embodiment, so that after the fan body is disassembled from the claw structure, the fan body can be stably placed on a table or other table surface for use.

[0327] When it is needed to dismount the fan body from the mounting base 16, the pressing portion 82 of the two pressing buckles 8 is pressed, the two pressing buckles 8 respectively move towards the pressing direction and compress the respective corresponding second elastic members 9, at this time, the two buckle portions 83 respectively disengage from the corresponding clamping grooves 165, that is, the clamping state of the buckle portion 83 and the first clamping groove 165 is released, at this time, the fan body can be taken off from the clamping jaw structure; when it is needed to mount the fan body on the clamping jaw structure, the pressing portion 82 of the two pressing buckles 8 is pressed, the second elastic members 9 are in the compressed state, the buckle portion 83 is placed in the clamping concave position 164, the pressing of the pressing portion 82 is stopped, the two second elastic members 9 respectively drive the corresponding pressing buckles 8 to reset, at this time, the two buckle portions 83 can be clamped in the two first clamping grooves 165 again, realizing the stable assembly of the fan body and the clamping jaw structure.

[0328] In the embodiment, the clamping jaw structure and the fan body are detachably connected, so that people can select the use mode of the fan body according to their own use needs, that is, the fan body can be clamped on the desktop or the rod-shaped object for use, the rod-shaped object is for example the guardrail of the baby carriage or the bedside guardrail, etc., the fan body can also be held in the form of hand holding for use or placed on the desktop for use, further expanding the use scene of the fan. The clamping jaw structure and the fan body can be easily separated or the fan body can be mounted on the clamping jaw structure by pressing the pressing buckle, so that the mounting and dismounting of the fan body and the clamping jaw structure is very simple and fast.

[0329] Scheme 4, see FIGS. 4-1 to 4-15.

[0330] The embodiment is an embodiment of a portable fan, as shown in FIG. 4-1, the portable fan includes a fan body, the fan body includes a fan head 3, as shown in FIGS. 4-2 to 4-9, the fan head 3 includes an outer shell 31, a fan assembly 32, an air inlet shell 33 and an air outlet shell 34. The outer shell 31 is a cylindrical shell with two open ends, the two ends of the outer shell 31 are an air inlet end A and an air outlet end B respectively, external air enters the outer shell 31 from the air inlet end A of the outer shell 31 and is discharged from the air outlet end B of the outer shell 31. The fan assembly 32 is located in the inner part of the outer shell 31, the air inlet shell 33 is arranged at the air inlet end of the outer shell 31, the air inlet shell 33 is provided with an air inlet passage, the air outlet shell 34 is arranged at the air outlet end of the outer shell 31, and the air outlet shell 34 is provided with an air outlet passage.

[0331] As shown in FIG. 4-3 and FIG. 4-6, the fan head 3 in the embodiment further comprises a connecting shell 37 fixedly arranged in the inner part of the outer shell 31. In the embodiment, the air inlet shell 33 is detachably connected to the end of the connecting shell 37 towards the air inlet end of the outer shell 31. Specifically, as shown in FIG. 4-3 and FIG. 4-6, the connecting shell 37 in the embodiment is connected with an assembling ring 39 on the side towards the air inlet end of the outer shell 31, and the assembling ring 39 is fixedly connected with the air inlet end of the outer shell 31. As a preferred technical solution, the assembling ring 39 and the air inlet end of the outer shell 31 are clamped by a clamping ring and a clasp in the embodiment. The clamping of the assembling ring 39 and the outer shell 31 in the embodiment is not limited, and other detachable connection modes of the assembling ring 39 and the outer shell 31 can also be used. As a preferred technical solution, the assembling ring 39 is located in the inner part of the outer shell 31, i.e., the end of the assembling ring 39 does not exceed the end of the outer shell 31.

[0332] In the embodiment, the air inlet shell 33 is detachably connected to the assembling ring 39. In the embodiment, the air inlet shell 33 is arranged in a tubular structure with one end open. As shown in FIG. 4-9, the air inlet shell 33 and the assembling ring 39 are detachably connected by the clamping structure 5 in the embodiment. The specific arrangement of the clamping structure 5 in the embodiment is the same as that of the clamping structure 5 in Embodiment 1. Specifically, as shown in FIG. 4-9, the clamping structure 5 in the embodiment comprises a clamping groove 51 and a clamping block 52, and the clamping block 52 is arranged on the assembling ring 39 in the embodiment. The clamping block 52 in the embodiment is in an "L"-shaped block structure. Specifically, the clamping block 52 comprises a first block body 521 and a second block body 522 connected with each other, wherein the first block body 521 is arranged on the assembling ring 39 along the axis of the assembling ring 39, and the second block body 522 is arranged on the assembling ring 39 along the circumference of the assembling ring 39.

[0333] The clamping groove 51 is arranged on the outer side wall of the open end of the air inlet shell 33, and the shape of the clamping groove 51 matches the shape of the clamping block 52. When the open end of the air inlet shell 33 is butted against the assembling ring 39, rotating the air inlet shell 33 can make the clamping block 52 on the assembling ring 39 clamped in the clamping groove 51 of the air inlet shell 33, and at this time, the air inlet shell 33 is axially limited on the assembling ring 39, i.e., the air inlet shell 33 can be installed on the assembling ring 39. When it is needed to detach the air inlet shell 33 from the assembling ring 39, the air inlet shell 33 can be detached from the assembling ring 39 by rotating the air inlet shell 33 in the opposite direction to make the clamping block 52 out of the clamping groove 51.

[0334] As a preferred technical solution, the second block body 522 of the clamping block 52 is provided with a positioning recess 523, and the clamping groove 51 is provided with a positioning protrusion 511. When the clamping block 52 is clamped in the clamping groove 51, the positioning protrusion 511 on the clamping groove 51 is limited on the positioning recess 523 on the second block body 522. Through the arrangement of the positioning protrusion 511 and the positioning recess 523, the clamping block 52 can be self-locked and positioned, and the air inlet shell 33 can be stably assembled on the assembly ring 39. In addition, the arrangement of the positioning protrusion 511 and the positioning recess 523 can also play a prompting role. When the positioning protrusion 511 is clamped in the positioning recess 523, there will be a certain jamming feeling, which can prompt the user that the air inlet shell 33 has been installed. Through the arrangement of the assembly ring 39 and the clamping structure 5 in the embodiment, the air inlet shell 33 can be detachably connected to the air inlet end of the shell 31, so that the air inlet shell 33 is convenient to disassemble, which is beneficial to the cleaning of the air inlet shell 33 and the maintenance and replacement of internal parts.

[0335] In order to further improve the stability of the air inlet shell 33 arranged at the air inlet end of the shell 31, the bottom of the shell 31 is provided with a threaded hole, and the outer side wall of the air inlet shell 33 is provided with a fixing protrusion 333. The fixing protrusion 333 is provided with a through hole. The fastener such as a screw is passed through the through hole on the fixing protrusion 333 and is screwed with the threaded hole at the bottom of the shell 31. This arrangement can further increase the stability of the air inlet shell 33 arranged at the air inlet end of the shell 31, so that the air inlet shell 33 can be firmly installed on the shell 31 when the fan body is working, and the safety of the fan body in use is improved.

[0336] As shown in FIGS. 4-3 and 4-9, in order to improve the cleanliness of the air outlet, the air inlet shell 33 is further provided with a filter 4 in the embodiment. In the embodiment, the filter 4 is arranged in a cylindrical structure. Specifically, the filter 4 can be a HEPA filter cartridge in the embodiment. The arrangement of the filter 4 can filter and clean the air entering the shell 31, effectively avoiding the harm of dust or particulate matter to the user.

[0337] As a preferred technical solution, the filter 4 is coaxially arranged in the air inlet shell 33 in the embodiment. As shown in FIGS. 4-2 and 4-3, the side wall of the air inlet shell 33 is provided with a plurality of air inlet holes 331, which are air inlet channels of the air inlet shell 33. The plurality of air inlet holes 331 are arranged towards the filter 4, so that the air entering the air inlet shell 33 can first contact and filter the filter 4, and then enter the shell 31. As a preferred technical solution, the side wall of the air inlet shell 33 is circularly outwardly bulged. This arrangement is beneficial to increasing the air inlet area.

[0338] As a preferred technical solution, the inner side wall of the air inlet shell 33 is uniformly provided with a plurality of convex ribs 332 along the circumference of the air inlet shell 33, which can support the filter element 4, so that the filter element 4 can be stably installed against the inner side wall of the air inlet shell 33. At the same time, the convex ribs 332 provide a certain spacing between the side wall of the air inlet shell 33 and the filter element 4. This arrangement can effectively prevent the filter element 4 from being tightly attached to the air inlet hole 331, which can reduce air resistance and ensure air inlet volume. On the other hand, air can first enter the air inlet shell 33 and then contact the filter element 4 for filtration, which can ensure the contact area between air and the filter element 4 and improve filtration efficiency.

[0339] When the air inlet shell 33 is installed on the assembly ring 39, the filter element 4 is axially limited between the assembly ring 39 and the air inlet shell 33, i.e., one end of the filter element 4 abuts against the assembly ring 39, and the other end abuts against the inner bottom of the air inlet shell 33. When the air inlet shell 33 is detached from the assembly ring 39, the filter element 4 can be directly taken out from the air inlet shell 33, which facilitates replacement or cleaning of the filter element 4. The filter element 4 in this embodiment can filter the air entering the air inlet shell 33, which can improve the cleanliness of the outlet air and effectively reduce the harm of dust or particulate matter to users.

[0340] In this embodiment, the filter element 4 is arranged in the air inlet shell 33, and the air outlet shell 34, the connecting shell 37 and the fan assembly 32 cooperate to form a pressurized channel. The pressurized channel can effectively improve the air inlet suction of the fan head 3, so that the fan head 3 can ensure the air inlet volume even if the filter element 4 is arranged.

[0341] As shown in FIGS. 4-3 and 4-6, the fan assembly 32 is arranged in the connecting shell 37 and assembled on the air outlet shell 34. Specifically, the fan assembly 32 includes a motor assembly 321 and a fan blade 36. The motor assembly 321 is installed on one side of the air outlet shell 34 facing the air inlet end of the housing 31, and is used to drive the fan blade 36 to rotate. The fan blade 36 is connected to the output shaft of the motor assembly 321.

[0342] Specifically, the fan blade 36 in the embodiment includes an assembly cylinder 361, a hub 362, and a plurality of blades 363. The hub 362 is in the form of a conical cover structure. Specifically, the hub 362 in the embodiment is in the form of a truncated cone, and is a cover structure with one end open and the other end sealed. The sealed end of the hub 362 is a conical top end 3621, which faces the air inlet end of the shell 31. The open end of the hub 362 is an expanded end 3622, which faces the air outlet end of the shell 31. As a preferred technical solution, the end face diameter D1 of the conical top end 3621 of the hub 362 is 0.08-0.32 times the end face diameter D2 of the expanded end 3622 of the hub 362. Controlling the conical top end 3621 of the hub 362 within this range can effectively reduce the air resistance of the airflow entering the fan blade, which helps the fan blade to generate greater wind pressure and wind volume.

[0343] The radial cross-sectional area of the hub 362 in the embodiment gradually increases from the air inlet end of the shell 31 to the air outlet end of the shell 31. Specifically, the hub 362 includes a wind guide surface 3621 that increases radially from the air inlet end of the shell 31 to the air outlet end of the shell 31. As a preferred technical solution, at least part of the wind guide surface 3621 is recessed inward to form a concave surface.

[0344] The assembly cylinder 361 is arranged at the expanded end 3622 of the hub 362, and at least partially located inside the hub 362. Specifically, one end of the assembly cylinder 361 is fixedly connected to the inner side wall of the hub 362, and the other end of the assembly cylinder 361 protrudes forward beyond the expanded end 3622 of the hub 362. Part of the motor assembly 321 is located inside the assembly cylinder 361. As a preferred technical solution, the motor assembly 321 in the embodiment adopts an external rotor brushless motor or a three-phase high-speed micro motor or other suitable motor, which is specifically selected and adapted according to the required requirements.

[0345] As shown in FIG. 4-3, the inside of the hub 362 in the embodiment is provided with a first mounting sleeve 364. Specifically, one end of the first mounting sleeve 364 is fixedly connected to the inside of the conical top part 3621 of the hub 362, and the other end of the first mounting sleeve 364 is connected to the output shaft of the motor assembly 321. The motor assembly 321 can drive the entire fan blade 36 to rotate through the first mounting sleeve 364. As a preferred technical solution, a plurality of reinforcing plates 365 are arranged between the outer wall of the first mounting sleeve 364 and the inner wall of the hub 362. The plurality of reinforcing plates 365 are arranged in the circumferential direction of the first mounting sleeve 364 and are arranged between the hub 362 and the first mounting sleeve 364. The arrangement of the reinforcing plates 365 in the embodiment can improve the stability of the first mounting sleeve 364 arranged inside the hub 362, and thus improve the stability of the rotation of the entire fan blade 36.

[0346] As shown in FIGS. 4-7, the hub 362 of the present embodiment includes a wind guide portion 3624 and a blade connecting portion 3625 in the axial direction of the hub 362, and the wind guide portion 3624 and the blade connecting portion 3625 are integrally formed in the present embodiment. A plurality of blades 363 are fixedly arranged on the outer side wall of the blade connecting portion 3625 at equal intervals in the circumferential direction of the hub 362.

[0347] As a preferred technical solution, as shown in FIGS. 4-8, the axial length L1 of the wind guide portion 3624 is 1 / 10-3 / 10 of the entire axial length L0 of the hub 362 in the present embodiment. Such arrangement can make the wind guide portion play a good wind guiding role, can make the air flow smoothly transition to the blades, is conducive to increasing the air inlet amount, and at the same time ensures that the blades have sufficient extension length on the hub, which helps the blades to sufficiently comb the air flow, thereby ensuring the air supply performance of the fan blades.

[0348] As a preferred technical solution, as shown in FIGS. 4-7 and 4-8, the plurality of blades 363 of the present embodiment are curved and extend from the air inlet end of the shell 31 to the air outlet end of the shell 31 at a preset angle in the circumferential direction of the hub 362. As a preferred technical solution, as shown in FIGS. 4-7 and 4-8, the side edge 3631 of the blade 363 towards the air inlet end of the shell 31 is outwardly arranged in the opposite direction of the extension of the blade 363 in the circumferential direction of the hub 362, which is conducive to improving the wind guiding effect of the blade and improving the air inlet efficiency of the fan blade.

[0349] As shown in FIGS. 4-7 and 4-8, the interval distance D3 between the end portions of the adjacent two blades 363 near the air inlet end of the shell 31 is less than the interval distance D4 between the end portions of the adjacent two blades 363 near the air outlet end of the shell 31. As a preferred technical solution, the interval distance D4 between the end portions of the adjacent two blades 363 near the air outlet end of the shell 31 is 4.0-6.3 times the interval distance D3 between the end portions of the adjacent two blades 363 near the air inlet end of the shell 31. This is conducive to improving the smoothness of the air flow, increasing the air inlet amount, and reducing noise.

[0350] As shown in FIGS. 4-3 and 4-6, the connecting shell 37 of the present embodiment includes a second inner cylinder portion 372 arranged towards the hub 362, and the second inner cylinder portion 372 includes an inner side surface 3724 that increases in the radial direction from the air inlet end of the shell 31 to the air outlet end of the shell 31. As shown in FIG. 4-3, the fan blade 36 and the second inner cylinder portion 372 form a flow guide channel, and the wind guide surface 3623 of the hub 362 and the inner side surface 3724 of the second inner cylinder portion 372 make the radial cross-sectional area of the flow guide channel gradually decrease from the air inlet end of the shell 31 to the air outlet end of the shell 31. This not only can play a role in guiding the air flow obliquely, but also can play a role in pressurizing the air, which is conducive to increasing the air supply distance and enhancing the air inlet suction.

[0351] As a preferred technical solution, the assembly ring 39 is fixedly connected to the second inner cylinder portion 372 in the embodiment, and specifically, the end of the second inner cylinder portion 372 towards the air inlet end of the shell 31 is connected to the inner edge of the assembly ring 39. As a preferred technical solution, the second inner cylinder portion 371 and the assembly ring 39 are provided in an integral molding structure in the embodiment.

[0352] As shown in FIGS. 4-3 and 4-6, the air outlet shell 34 is arranged at the side of the connecting shell 37 towards the air outlet end of the shell 31 in the embodiment. Specifically, the air outlet shell 34 includes a first outer cylinder portion 341 and a first inner cylinder portion 342 in the embodiment, and a plurality of first connecting plates 343 are fixedly arranged between the first outer cylinder portion 341 and the first inner cylinder portion 342, the plurality of first connecting plates 343 are uniformly arranged between the first outer cylinder portion 341 and the first inner cylinder portion 342 along the circumferential direction of the first outer cylinder portion 341 or the first inner cylinder portion 342, and the air outlet passage 344 of the air outlet shell 34 is formed between any two adjacent first connecting plates 343.

[0353] As shown in FIGS. 4-3 and 4-6, the first inner cylinder portion 342 is provided in a circular truncated cone or truncated cone cylinder structure in the embodiment. Specifically, the radial cross-sectional area of the first inner cylinder portion 342 gradually increases in the direction from the air inlet end to the air outlet end of the shell 31 in the embodiment. Specifically, the first inner cylinder portion 342 includes a pressurizing surface 3421 that radially increases from the air inlet end to the air outlet end. As a preferred technical solution, the pressurizing surface 3421 is at least partially radially protruding to form a convex surface.

[0354] As shown in FIG. 4-6, the first outer cylinder portion 341 protrudes forward beyond the first inner cylinder portion 342 in the embodiment, and the first outer cylinder portion 341 is connected to part of the second connecting plates 343. The second inner cylinder portion 372 extends forward to form an extension portion 3725 towards the air outlet end of the shell 31 in the embodiment, the extension portion 3725 abuts to the end edge of the first outer cylinder portion 341 towards the air inlet end of the shell 31, and the inner wall of the extension portion 3725 tightly abuts to the top of the first connecting plate 342.

[0355] The edge of the extension portion 3725 tightly abuts to the edge of the first outer cylinder portion 341 towards the air inlet end of the shell 31 in the embodiment, and the two are connected through a snap ring and a snap buckle. The extension portion 3725 and the first outer cylinder portion 341 are connected through the snap connection in the embodiment, which is not a restrictive provision, and other connection modes can also be used. The outer top of the first outer cylinder portion 341 towards the air outlet end of the shell 31 is fixedly connected to the air outlet end of the shell 31, and the first outer cylinder portion 341 and the shell 31 are connected through the snap connection in the embodiment, which is not a restrictive provision, and other connection modes can also be used.

[0356] The transition passage is formed between the extension 3725 and the first inner cylinder portion 342 opposite the extension 3725, is located between the air outlet passage and the airflow guide passage, and both ends of the transition passage are smoothly connected to the airflow guide passage and the air outlet passage in the embodiment.

[0357] As shown in FIG. 4-4, in the embodiment, the part where the first outer cylinder portion 341 is connected to the first connecting plate 343 is a first outer cylinder connecting portion 3411. In the embodiment, the first outer cylinder connecting portion 3411 is in a cylindrical shape, and the inner side wall of the first outer cylinder connecting portion 3411 is in an equal diameter. The inner side wall surface of the first outer cylinder connecting portion 3411 and the pressurization surface 3421 of the first inner cylinder portion 342 make the radial cross-sectional area of the air outlet passage 344 gradually decrease from the air inlet end of the housing 31 to the air outlet end of the housing 31, which can pressurize the air and further increase the air supply distance and the air inlet suction force.

[0358] In the embodiment, the airflow guide passage formed by the fan blade 36 and the second inner cylinder portion 372, the air outlet passage 344 formed by the first outer cylinder connecting portion 3411, the first inner cylinder portion 342, and the first connecting plate 343, and the transition passage formed between the extension 3725 and the first inner cylinder portion 342 together form the pressurization passage in the fan head 3 in the embodiment. The pressurization passage makes the airflow obliquely guide and outlet, and is gradually pressurized, which greatly increases the air outlet volume, the air supply distance, and the air inlet suction force. Therefore, the fan head 3 in the embodiment still has a large air inlet volume even if the filter 4 is arranged, which is beneficial to meet the user's experience.

[0359] As a preferred technical solution, as shown in FIG. 4-4, in the embodiment, the first outer cylinder portion 341 further includes a first outer cylinder extension portion 3412, which is in an integral molding structure with the first outer cylinder connecting portion 3411. The inner side wall of the first outer cylinder extension portion 3412 extends along the axial direction and is outwardly curved, i.e., the entire first outer cylinder extension portion 3412 is in a flared shape. The flared shape of the first outer cylinder extension portion 3412 in the embodiment can guide the air outlet fluid and is beneficial to increase the air outlet area and improve the user's comfort.

[0360] As shown in FIG. 4-3 and FIG. 4-6, in the embodiment, the first inner cylinder portion 342 is internally provided with a mounting partition plate 345, which is arranged in the first inner cylinder portion 342 along the radial direction of the first inner cylinder 342. In the embodiment, the mounting partition plate 345 is connected to the inner side wall of the first inner cylinder portion 342 through a sleeve 3451. In the embodiment, the mounting partition plate 345 is provided with a second mounting sleeve 346 at the central position of the side facing the air inlet end of the housing 31. Part of the motor assembly 321 is fixedly assembled on the second mounting sleeve 364.

[0361] As shown in FIG. 4-3, the axial distance D5 between the flared end 3622 of the hub 362 and the end of the first inner cylinder portion 342 towards the air inlet end of the housing 31 is between 0.5mm and 3mm. The axial distance D5 not only ensures that the fan blade 36 has a rotating space, i.e. does not limit or hinder the normal rotation of the fan blade 36, but also enables the air formed by the fan blade 36 to flow smoothly to the air outlet housing 34, thereby reducing the noise caused by turbulence.

[0362] As shown in FIG. 4-3 and FIG. 4-6, the first cover 348 is installed on the first inner cylinder portion 342 near the end of the air outlet end of the housing 31 in the embodiment. The front surface 3481 of the first cover 348 is concave in the embodiment. The cover 348 is provided in a concave structure in the embodiment, a negative pressure area is formed at the region of the first cover 348, and a part of the airflow flowing out of the air outlet channel 344 will flow to the negative pressure area, but will be pulled back to flow by the majority of the airflow flowing out of the air outlet channel 344 to form a vortex, so that the part of the airflow reflows forward, thereby reducing the loss of air volume and air energy, and achieving the effect of converging fluid and more concentrated air outlet.

[0363] In other embodiments, the front surface 3481 of the first cover 348 can be provided as a convex surface that is convex outward. If the first cover 348 is provided as a convex structure, the fluid will flow forward along the convex surface, which can also reduce the loss of air volume and air energy to a certain extent.

[0364] As a preferred technical solution, as shown in FIG. 4-3 and FIG. 4-6, the light assembly 35 is arranged between the side of the mounting partition plate 345 towards the air outlet end of the housing 31 and the first cover 348 in the embodiment. Specifically, as shown in FIG. 4-4, the light assembly 35 includes a mounting cylinder 351 and a light strip 352. The mounting cylinder 351 is arranged on the side wall of the mounting partition plate 345 towards the air outlet end of the housing 31 in the embodiment, and the light strip 352 is arranged around the outer peripheral wall of the mounting cylinder 351. The connecting edge between the first cover 348 and the first inner cylinder portion 342 is provided with a light-transmitting piece 353, which is made of transparent or translucent material in the embodiment. The first cover 348 is clamped with the mounting partition plate 345 in the embodiment, and specifically, the first cover 348 and the mounting partition plate 345 are clamped by buckles and clamps in the embodiment. The clamping connection between the first cover 348 and the mounting partition plate 345 in the embodiment is not limited, and other modes that can achieve detachable connection between the two can also be used. The light strip 352 is arranged in a hidden manner in the embodiment, and the light is reflected out of the inner wall of the air outlet housing 34, so that the light is softer.

[0365] As a preferred technical solution, the shell 31 in the embodiment is provided in a two-part split structure. Specifically, as shown in FIGS. 4-9, the shell 31 includes a first half shell 311 and a second half shell 312, and the first half shell 311 and the second half shell 312 are butted to form the complete shell 31. Specifically, in the embodiment, the side edges of the first half shell 311 and the second half shell 312 that are butted against each other are respectively provided with a first butt joint 313 and a second butt joint 314, wherein the first butt joint 313 is provided with a first connecting hole 3131, and the second butt joint 314 is provided with a second connecting hole 3141. Specifically, in the embodiment, the first connecting hole 3131 and the second connecting hole 3141 are both perforations, and the outer side of the second inner cylinder portion 372 is provided with a connecting hole post (not shown in the figure). Specifically, the connecting hole post is a threaded hole post. When the first half shell 311 and the second half shell 312 are butted against each other, the first butt joint 313 can be inserted into one side of the second butt joint 314, and the positions of the first connecting hole 3131, the second connecting hole 3141, and the connecting hole post (not shown in the figure) correspond to each other. By arranging fasteners such as screws in the first connecting hole 3131, the second connecting hole 3141, and the connecting hole post 3723, the first half shell 311 and the second half shell 312 can be butted and fixed together, thereby achieving stable connection of the shell 31 and the second inner cylinder portion 372.

[0366] In other embodiments, the first connecting hole 3131 and the second connecting hole 3141 are both provided as threaded holes, and screws are fixed in the first connecting hole 3131 and the second connecting hole 3141, thereby fixing the first butt joint 313 and the second butt joint 314 together, butting the first half shell 311 and the second half shell 312 to form the complete shell 31, and achieving stable butt joint connection of the first half shell 311 and the second half shell 312 without cooperation with the second inner cylinder portion 372.

[0367] In order to further improve the stability of the butt joint of the first half shell 311 and the second half shell 312 and facilitate the installation of the screws and other fasteners at the first connecting hole 3131, the second connecting hole 3141, and the connecting hole post 3723, the edges of the first half shell 311 and the second half shell 312 in the embodiment are respectively provided with buckles and clamps, and the positioning clamping of the first half shell and the second half shell is achieved through the clamping of the buckles and the clamps. FIGS. 4-9 only show the structural arrangement of the clamps 3142, and the structural arrangement of the clamps 3142 shown in FIGS. 4-9 is not a limiting provision. Other structures that can achieve positioning clamping of the first half shell 311 and the second half shell 312 are also acceptable.

[0368] As a preferred technical scheme, the second cover 315 is arranged on the shell 31 at the positions of the first and second docking connectors 313 and 314, and the first and second docking connectors 313 and 314 are covered by the second cover 315, thereby improving the appearance of the entire shell 31. In the embodiment, the second cover 315 is detachably connected to the first and / or second docking connectors 313 and 314. Specifically, the second cover 315 is provided with a docking column 3151 on the side facing the shell 31, and the first and second docking connectors 313 and 314 are provided with corresponding docking holes 316. When the second cover 315 is covered at the positions of the first and second docking connectors 313 and 314, the docking column 3151 on the second cover 315 can be correspondingly inserted into the docking hole 316. As a preferred technical scheme, the edge of the second cover 315 is clamped on the edge of the shell 31 at the positions of the first and second docking connectors 313 and 314.

[0369] In order to further improve the connection stability of the air outlet shell 34, the connecting shell 37 and the assembly ring 39 with the shell 31, as shown in FIGS. 4-5 and 4-6, the outer side wall of the assembly ring 39 is provided with a first limiting plug 393, and the inner side wall of the shell 31 close to the air inlet end is provided with a first limiting groove 317. In the embodiment, the outer side wall of the first outer cylinder portion 341 is provided with a second limiting plug 3413, and the inner side wall of the shell 31 close to the air outlet end is provided with a second limiting groove 318. In the embodiment, the outer side wall of the connecting shell 37 is provided with a plurality of insertion grooves (not shown in the figure), and the inner side wall of the shell 31 is provided with a plurality of insertion columns (not shown in the figure) that can be correspondingly inserted into the insertion grooves.

[0370] When the connecting shell 37, the assembly ring 39 and the air outlet shell 341 are installed in the shell 31, the first limiting plug 393 can be inserted into the first limiting groove 317, and the second limiting plug 3413 can be inserted into the second limiting groove 318. The plurality of insertion columns of the inner side wall of the shell 31 can be correspondingly inserted into the plurality of insertion grooves on the outer side wall of the connecting shell 37. The first limiting plug 393 and the first limiting groove 317, the second limiting plug 3413 and the second limiting groove 318, and the plurality of insertion grooves and the plurality of insertion columns can axially limit the connecting shell 37, the assembly ring 39 and the air outlet shell 341 in the shell 31, thereby improving the stability of the arrangement of the connecting shell 37, the assembly ring 39 and the air outlet shell 341 in the shell 31.

[0371] As shown in FIGS. 4-1 to 4-3, the fan body of the embodiment further comprises a base 2 and an electric control assembly, and the fan head 3 is arranged on the base 2. In the embodiment, the base 2 is a hollow structure, and the electric control assembly comprises a charging battery pack, a charging panel, a control circuit board 73 and other components, wherein the charging battery pack and the charging panel are electrically connected and arranged in the base 2. The base 2 is further provided with a charging interface 71 on the side wall close to the air inlet end of the shell 31, and the charging interface 71 is electrically connected to the charging panel.

[0372] As a preferred technical solution, in the embodiment, the control circuit board 73 is arranged on the top of the fan head 3. Specifically, in the embodiment, the control circuit board 73 is arranged between the shell 31 and the second inner cylinder part 372, and the control circuit board 73 is fixed on the second inner cylinder part 372 by screws. By arranging a wire passage between the fan head 3 and the base 2, the electrical connection of the control circuit board 73 with the charging battery pack and the charging panel is realized.

[0373] In the embodiment, the control circuit board 73 is provided with a wind speed adjustment button 74, which is a rotary knob in the embodiment, for realizing 1-100 grade wind power adjustment of the fan head. The control circuit board 73 is further provided with a switch button 75 and a plurality of function buttons 76. The switch button 75 is used to control the start and stop of the fan, and the function buttons 76 are used to control the light, the shaking head or the tilting function, etc. The specific settings are made according to the functions possessed by the product. As a preferred technical solution, the control circuit board 73 of the embodiment is further provided with a display screen module 77. By arranging the display screen module 77, the power, the wind speed or other function information of the fan is displayed, and the user experience is further improved. Correspondingly, the top of the shell 31 is provided with an opening for the stepless wind speed adjustment button 74, the switch button 75, the plurality of function buttons 76 and the display screen module 77 to extend out.

[0374] In order to improve the safety of the fan body, as shown in FIGS. 4-5 and 4-6, the control circuit board 73 of the embodiment is further provided with a sensor 78. In the embodiment, the sensor 78 is arranged in cooperation with the air inlet shell 33, and is used to detect whether the air inlet shell 33 is located at a preset displacement position point. The sensor 78 can be triggered when the air inlet shell 33 is located at the preset displacement position point or the air inlet shell 33 is not located at the preset displacement position point. In the embodiment, the sensor 78 is a displacement detection switch. Specifically, when the air inlet shell 33 is detached from the air inlet end of the shell 31 or the air inlet shell 33 is not assembled to the preset position of the air inlet end of the shell 31, the fan body is automatically powered off and cannot be started. When the air inlet shell 33 is assembled to the preset position of the air inlet end of the shell 31, the fan body can be normally powered on.

[0375] As a preferred technical solution, as shown in FIGS. 4-6, the mounting partition 345 is further provided with a wire hole 347, the first connecting plate 343 of the air outlet shell 34 close to the control circuit board 73 is provided as a hollow structure, and the outside and the inside of the air outlet shell 34 are connected. One end of the wire for electrically connecting the motor assembly 321 and the control circuit board 73 is electrically connected with the motor assembly 321, the other end can pass through the wire hole 347 on the mounting partition 345, and pass through the hollow first connecting plate 343 to the outside of the air outlet shell 34 and be electrically connected with the control circuit board 73. The wire for electrically connecting the lamp strip assembly 35 also passes through the hollow first connecting plate 343 to the outside of the air outlet shell 34 and is electrically connected with the control circuit board 73.

[0376] In order to further improve the safety of the fan body, as shown in FIG. 4-2, the base 2 is provided with a protection switch 79, which is arranged at the position of the charging plate. The protection switch 79 can control the power supply circuit of the fan body to be on or off. In the embodiment, the protection switch 79 is arranged as a toggle switch. When the protection switch 79 is toggled to one end, the power supply circuit of the fan body is on, and the motor assembly in the fan body can drive the fan blade to rotate. When the protection switch 79 is toggled to the other end, the power supply circuit of the fan body is off, and the motor assembly in the fan body does not work, and the fan blade does not rotate. The arrangement of the protection switch 79 can effectively prevent the accidental start of the fan by the operator when the switch key is touched by mistake.

[0377] As shown in FIG. 4-1, the fan body further comprises a pitch adjusting structure 4, and the fan head 3 is arranged on the base 2 through the pitch adjusting structure 4. As shown in FIGS. 4-10 to 4-14, the pitch adjusting structure 4 comprises a first connecting piece and a second connecting piece. The first connecting piece is arranged at the bottom of the fan head 3, and the second connecting piece is arranged at the top of the base 2. The first connecting piece and the second connecting piece are pivotally connected, so that the fan head 3 can be adjusted in pitch relative to the base 2. In the embodiment, the pivotally connected part of the first connecting piece and the second connecting piece is provided with a rotation positioning assembly. The rotation positioning assembly is used to position the angle of the fan head 3 after adjustment, so that the fan head 3 can stably maintain the adjusted blowing angle, thereby meeting the use requirements of the user.

[0378] Specifically, as shown in FIGS. 4-10 to 4-14, the top of the base 2 is provided with a mounting seat 214. In this embodiment, the mounting seat 214 is a plate-shaped structure and has a disc shape. The mounting seat 214 is located at the middle position of the base 2. In this embodiment, the second connecting member is a half-spherical cover 46, which is mounted on the top of the mounting seat 214. As a preferred technical solution, the mounting seat 214 is located inside the base 2 and is fixedly connected with the base 2. The top of the base 2 is provided with a through hole at the position of the mounting seat 214, and the open end of the half-spherical cover 46 is fixedly connected with the top of the mounting seat 214 through the through hole. As a preferred technical solution, the half-spherical cover 46 is detachably connected with the mounting seat 214 by screws or buckles.

[0379] In this embodiment, the first connecting member is a half-spherical body 47, which is located inside the half-spherical cover 46. The top of the half-spherical cover 46 is provided with a clearance hole 462, and the bottom of the fan head 3 is provided with an assembly part 48 capable of being connected with the top of the half-spherical body 47 through the clearance hole 462. Specifically, as shown in FIG. 22, the assembly part 48 is provided as a connecting column in this embodiment. There are at least two connecting columns, and two connecting columns are provided in this embodiment. The two connecting columns are spaced apart. One end of the connecting column is detachably connected with the bottom of the housing 31 by screws or is integrally formed with the bottom of the housing 31 in this embodiment. The other end of the connecting column is detachably connected with the top of the half-spherical body 47 by screws. Of course, the detachable connection of the connecting column with the half-spherical body 47 and the housing 31 is not limited in this embodiment, and other detachable connection modes of the connecting column with the half-spherical body 47 and the housing 31 can also be used.

[0380] As a preferred technical solution, as shown in FIGS. 4-11 and 4-12, the top of the half-spherical body 47 is provided with an extension column 472, and the side wall of the extension column 472 abuts against the connecting column. Specifically, two extension columns 472 are provided in this embodiment. The two extension columns 472 extend into the space between the two connecting columns, and there is a space between the two extension columns 472. As a preferred technical solution, the side wall of each extension column 472 is provided with a recess 4721 facing the connecting column, and the connecting column abuts into the recess 4721 of the extension column 472. In this embodiment, the extension column 472 can further improve the stability of the connection between the half-spherical body 47 and the fan head 3.

[0381] The hemispherical body 47 can slide relative to the inside of the hemispherical cover 46 in this embodiment, that is, the outer wall of the hemispherical body 47 is in sliding connection with the inner wall of the hemispherical cover 46. Specifically, as shown in FIGS. 4-10, 4-12 and 4-14, the outer wall of the hemispherical body 47 is provided with a sliding groove 471 in this embodiment, and the inner wall of the hemispherical cover 46 is provided with a sliding block 461 which can slide in the sliding groove 471. The sliding groove 471 of the hemispherical body 47 is opened on the longitudinal axis section of the fan head 3, and the sliding direction of the hemispherical body 47 relative to the hemispherical cover 46 can be limited through the sliding groove 471 and the sliding block 461, that is, the hemispherical body 47 can slide in the axial direction of the fan head 3 inside the hemispherical cover 46, so that the fan head 3 can be pivoted relative to the base 2, thereby achieving the adjustment of the blowing angle of the fan head 3.

[0382] In other embodiments, the sliding groove 471 can also be provided on the inner wall of the hemispherical cover 46, and the sliding block 461 is provided on the outer wall of the hemispherical body 47.

[0383] As shown in FIGS. 4-10 and 4-11, the bottom of the shell 31 above the hemispherical cover 46 is provided in an arc shape which can match the outer side wall of the hemispherical cover 46 in this embodiment. This arrangement not only ensures the adjustment of the fan head 3, but also facilitates the compact structure and the reasonable use of space.

[0384] As shown in FIGS. 4-10-4-14, the bottom of the hemispherical body 47 is provided with an abutting rod 473 which can abut against the top of the mounting seat 214. As a preferred technical solution, the hemispherical body 47, the extension column 472 and the abutting rod 473 are provided in an integral molding structure in this embodiment.

[0385] The top of the mounting seat 214 is recessed downward to form a recess 23 in the middle position in this embodiment, one end of the abutting rod 473 is fixedly connected with the bottom of the hemispherical body 47, and the other end is movably abutted into the recess 23. As shown in FIG. 24, the inner wall of the recess 23 is in an arc structure in this embodiment. Specifically, the recess 23 includes a bottom wall 231, a front side wall 232 and a rear side wall 233 in this embodiment, the front side wall 232 and the rear side wall 233 are two opposite side walls of the recess 23 provided in the axial direction of the fan head 3, the bottom wall 231 is in an arc structure which is recessed downward in this embodiment, the front side wall 232 and the rear side wall 233 are both outwardly inclined, and the front side wall 232 and the rear side wall 233 are both smoothly transitioned to the bottom wall 231, and the bottom wall 231, the front side wall 232 and the rear side wall 233 are provided in an integral molding structure.

[0386] As shown in FIG. 4-13 and FIG. 4-14, the abutting rod 473 in the embodiment is provided as a straight rod structure, and the bottom surface of the abutting rod 473 is provided as an arc surface 474. When the abutting rod 473 is placed in the groove 23, the arc surface 474 of the abutting rod 473 abuts against the bottom wall 231 of the groove 23. The distance between the front side wall 232 and the rear side wall 233 of the groove 23 along the axial direction of the fan head 3 is greater than the width of the abutting rod 473 along the axial direction of the fan head 3. Such a design allows the abutting rod 473 to have a space for movement in the groove 23, so that the hemispherical body 47 can slide in the interior of the hemispherical cover 46, and thus the fan head 3 can perform the pitching movement relative to the base 2.

[0387] As shown in FIG. 4-11, the rotating positioning assembly in the embodiment is provided as a friction plate 44. In the embodiment, the friction plate 44 is a rubber sheet or a damping sheet, and the friction plate 44 is made of rubber. It should be noted that the rubber material of the friction plate 44 in the embodiment is not a limitation of the present application. The friction plate 44 can also be made of other materials, as long as it can utilize the friction force to make the fan head 3 have a damping rotation, so as to realize the positioning self-locking of the fan head 3.

[0388] Specifically, the friction plate 44 in the embodiment is arranged between the outer wall of the hemispherical body 47 and the inner wall of the hemispherical cover 46. As a preferred technical solution, as shown in FIG. 4-12, the outer wall of the hemispherical body 47 is provided with a mounting groove 441 for mounting the friction plate 44. The friction plate 44 is fixedly mounted in the mounting groove 441, and part of the friction plate 44 extends out of the mounting groove 441 and contacts the inner wall of the hemispherical cover 46. The friction plate 44 in the embodiment utilizes the friction force to make the hemispherical body 47 have a damping rotation, and the hemispherical body 47 can be positioned and self-locked after rotation. Through the arrangement of the friction plate 44, the stepless positioning self-locking function of the fan head 3 can be realized.

[0389] By limiting the position and length of the avoiding hole 462 along the axial direction of the fan head 3, the pitching angle range of the hemispherical body 47 in the hemispherical cover 46 can be limited, and thus the pitching angle range of the fan head 3 relative to the base 2 can be limited.

[0390] Two abutting rods 473 are arranged in the embodiment, and the two abutting rods 473 are arranged in the groove 23 in a spaced manner. As shown in FIG. 4-14, the part of the groove 23 between the two abutting rods 473 is provided with an opening 234 for the electric wire to pass through. As shown in FIG. 4-13, the hemispherical body 47 is further provided with a wire passing channel 475. The electric wire in the base 2 can pass through the opening 234 in the groove 23, the wire passing channel 475 in the hemispherical body 47, and the space between the two extension columns 472, and then extend into the housing 31 to be reasonably wired in the housing 31, so that the electric wire is electrically connected with the fan assembly.

[0391] The pitch adjusting structure is cleverly arranged and has concealment. As shown in FIG. 4-1, only the half-sphere cover 46 can be seen from the outside, and other structures are all arranged in the interior of the fan head 3, the half-sphere cover 46 and the base 2. In addition, the arrangement of the pitch adjusting structure in the embodiment makes the pitch adjustment of the fan head 3 simple and convenient. Only the fan head 3 needs to be rotated to adjust it to a suitable pitch blowing angle, and after the pitch angle is adjusted, the friction plate 44 can realize the pitch angle positioning self-locking of the fan head 3.

[0392] In the embodiment, the mounting seat 214 is rotationally arranged in the interior of the base 2, so that the fan head 3 can not only be pitch adjusted, but also can be horizontally shaken, which is further beneficial to meet the use demand of the user.

[0393] Specifically, as shown in FIG. 4-10, the base 2 is hollow in the embodiment, and the base 2 is provided with a support plate 24. The support plate 24 is fixedly arranged in the interior of the base 2, and the mounting seat 214 is rotationally arranged on the support plate 24 through a rotating structure 49. In the embodiment, the rotating structure 49 includes a motor 491, a first gear 492, a second gear 493 and an elastic sheet 494.

[0394] In the embodiment, the top middle of the support plate 24 is provided with a support ring 241, and the bottom middle of the mounting seat 214 is provided with a convex ring 2141. As a preferred technical solution, the support ring 241 and the support plate 24 are arranged in an integral molding structure in the embodiment, and the convex ring 2141 and the mounting seat 214 are arranged in an integral molding structure.

[0395] In the embodiment, the convex ring 2141 is sleeved on the outside of the support ring 214, the second gear 493 is rotationally sleeved on the outer sidewall of the convex ring 2141, the first gear 492 is engaged with the second gear 493, the first gear 492 is sleeved on the output shaft of the motor 491, and the motor 491 is fixedly installed in the interior of the base 2. The elastic sheet 494 has a certain elastic deformation capacity. In the embodiment, the elastic sheet 494 is arranged in an arc-shaped structure, the two ends of the elastic sheet 494 are fixedly arranged at the bottom of the mounting seat 214 and are arranged along the circumference of the second gear 493, the elastic sheet 494 is provided with a convex tooth 4941, and the convex tooth 4941 is engaged with the second gear 493.

[0396] When the motor 491 works, the motor 491 drives the first gear 492 to rotate, the first gear 492 drives the second gear 493 to rotate, the second gear 493 drives the whole mounting base 214 to rotate on the support plate 24 through the elastic sheet 494, the mounting base 214 drives the whole fan head 3 to rotate through the pitch adjusting structure in the rotating process, that is, the fan head 3 can perform the head shaking. In addition, when the motor 491 works, and the fan head 3 cannot rotate together due to some reasons, since the elastic sheet 494 has a certain elastic deformation capacity, the convex teeth 4941 on the elastic sheet 494 can be separated from the meshing with the second gear 493, so that the second gear 493 can still rotate normally, which can protect the motor 491 and prevent the motor 491 from being burned out, thereby improving the safety and service life of the whole fan.

[0397] In the embodiment, the rotating structure 49 is arranged, so that the fan head 3 can not only perform the pitch angle adjustment, but also can perform the head shaking, which can meet different use requirements of users and is beneficial to improving the use experience of users.

[0398] As shown in FIG. 4-15, the base 2 includes a seat body 21 and a bottom cover 22 in the embodiment. The seat body 21 is hollow and has an opening at the bottom, and the bottom cover 22 is detachably connected to the bottom of the seat body 21. In the embodiment, the bottom cover 22 and the seat body 21 are connected by screws or rivets. It should be noted that the screw or rivet fixing mode is a preferred mode for achieving the detachable connection of the seat body 21 and the bottom cover 22, and does not limit the application. In the embodiment, the support plate 24 is fixedly installed in the interior of the seat body 21 by screws or the like.

[0399] In the embodiment, the portable fan further includes a clamping jaw structure. In the embodiment, the clamping jaw structure is the clamping jaw structure in the second embodiment in scheme 1. In the embodiment, the clamping jaw structure is detachably connected to the fan body. Specifically, the clamping jaw structure is detachably arranged on the base through the pressing buckle structure and the butt joint structure. Such an arrangement enables people to select the use mode of the fan according to their own use requirements, that is, the fan body can be clamped on a desktop or a rod-shaped object for use, the rod-shaped object is for example a guardrail of a baby carriage or a bedside guardrail, and the fan body can also be held for use in a handheld form or placed on a desktop for use, thereby further expanding the use scene of the fan.

[0400] As shown in FIG. 4-15, the pressing buckle structure of the embodiment includes a pressing buckle 8 and a second elastic member 9, wherein the pressing buckle 8 is at least partially located in the base 2. In the embodiment, the pressing buckle 8 is movably arranged on the bottom cover 21. Specifically, the pressing buckle 8 includes a main body part 81, a pressing part 82 and a buckle part 83, wherein the main body part 81 is movably arranged on the inner bottom of the bottom cover 21, the pressing part 82 is fixedly arranged on the main body part 81, and the pressing part 82 at least partially extends to the outside of the base 21. The pressing part 82 is configured to facilitate the pressing operation of the user. The side wall of the base 21 is provided with a through hole for the pressing part 82 to extend out.

[0401] In the embodiment, the buckle part 83 is in an "L" shape, and the buckle part 83 is arranged on the bottom of the main body part 81. The bottom of the bottom cover 22 is provided with a bottom opening 225 for the buckle part 83 to extend out. The buckle part 83 extends out of the bottom opening 225 to the outside of the base 2 and is clamped with the abutting structure on the clamping jaw structure.

[0402] As a preferred technical solution, the main body part 81, the pressing part 82 and the buckle part 83 are integrally formed.

[0403] In the embodiment, the inside of the base 2 is further provided with a limiting assembly for limiting the movement of the main body part 81 in the pressing direction, so as to improve the stability of the main body part 81 arranged in the base 2. Specifically, the limiting assembly in the embodiment is configured as two first limiting plates (not shown in the drawings), which are arranged at intervals on the bottom of the supporting plate 24. Part of the main body part 81 is limited between the two first limiting plates. The arrangement of the two first limiting plates can limit the main body part 81, so that the main body part 81 can only move in the pressing direction.

[0404] As shown in FIG. 4-15, the inside of the base 2 is provided with an abutting member 2141. One end of the second elastic member 9 abuts against the pressing part 82, and the other end abuts against the abutting member 2141. In the embodiment, the abutting member 2141 is fixedly arranged on the bottom of the supporting plate 24 and located between the two first limiting plates. As a preferred technical solution, the abutting member 2141 is in a "U" shape structure, and the opening side of the abutting member 2141 faces the end of the second elastic member 9.

[0405] In the embodiment, the bottom cover 22 is further provided with a supporting limiting member 223, and the main body part 81 is provided with a limiting opening 811 through which the supporting limiting member 223 passes. In the embodiment, the supporting limiting member 223 is configured as a supporting plate, which is located below the second elastic member 9 and abuts against and supports the bottom of the second elastic member 9. In addition, the limiting opening 811 can limit the movement displacement of the main body part 81, limit the pressing displacement and the reset displacement of the pressing buckle 8, and thus ensure the stability of the pressing buckle 8 arranged in the base 2.

[0406] The second elastic member 9 in the embodiment is a spring (not shown in the drawings). As a preferred technical solution, a first support column 821 is arranged on the side wall of the pressing portion 82 abutting against the second elastic member 9, the first support column 821 extends into the end of the second elastic member 9, and the first support column 821 can support and stabilize the second elastic member 9.

[0407] As shown in FIG. 4-15, the inside of the base 2 is further provided with an abutting plate 2151, which is fixedly arranged at the bottom of the support frame 24 in the embodiment, and is located inside the abutting member 2141. The abutting plate 2151 is arranged immediately above the second elastic member 9 in the embodiment, and can abut against the top of the second elastic member 9. The arrangement of the support limiting member 223, the first support column 821 and the abutting plate 2151 can improve the stability of the second elastic member 9, so that the second elastic member 9 can stably drive the pressing buckle 8 to reset.

[0408] In the embodiment, two sets of pressing buckle structures are arranged, and correspondingly, the abutting member 2141, the abutting plate 2151, the limiting assembly and other structures arranged in cooperation with the pressing buckle structure are also arranged in two sets.

[0409] As shown in FIG. 4-15, the top of the fixed clamping member 11 is fixedly provided with a butt joint portion 163 in the embodiment. A butt joint structure is arranged on the butt joint portion 163, and the butt joint structure is arranged as a clamping port 166 in the embodiment. As shown in FIG. 4-15, two clamping ports 166 are arranged on the butt joint portion 163 in the embodiment, and the two clamping ports 166 are arranged in cooperation with two buckle portions 83. Specifically, the clamping port 166 is provided with an extension abutting block 1661, which can clamp and limit the buckle portion 83 inside the clamping port 166 when the buckle portion 83 extends into the clamping port 166.

[0410] The bottom of the bottom cover 22 is provided with a butt joint recess 224 for accommodating the butt joint portion 163 in the embodiment, and the shape of the butt joint recess 224 matches that of the butt joint portion 163. When the fan body is connected with the clamping jaw structure, the butt joint portion 163 of the clamping jaw structure can extend into the butt joint recess 224 of the bottom cover 22, and the buckle portion 83 can be clamped with the clamping port 166, thereby realizing the stable connection of the fan body and the clamping jaw structure.

[0411] As a preferred technical solution, the bottom of the buckle portion 83 does not exceed the bottommost part of the base 2 in the embodiment, so that the fan body can be stably placed on a table or other surface for use after being disassembled from the clamping jaw structure.

[0412] When it is needed to detach the fan body from the clamping jaw structure, the pressing part 82 of the two pressing buckles 8 is pressed, the two pressing buckles 8 respectively move towards the pressing direction and compress the respective corresponding second elastic members 9, at this time, the two buckle parts 83 are respectively detached from the corresponding clamping interfaces 166, that is, the clamping state of the buckle part 83 and the extended abutting block 1661 is released, at this time, the fan body can be taken off from the clamping jaw structure; when it is needed to install the fan body on the clamping jaw structure, the pressing part 82 of the two pressing buckles 8 is pressed, the second elastic members 9 are in the compressed state, the buckle part 83 is placed in the clamping clamping interface 166, the pressing of the pressing part 82 is stopped, the two second elastic members 9 respectively drive the corresponding pressing buckles 8 to reset, at this time, the two buckle parts 83 can be clamped and limited with the extended abutting block 1661 on the clamping interface 166, realizing the stable assembly of the fan body and the clamping jaw structure.

[0413] Scheme 5, see FIGS. 5-1 to 5-14

[0414] The embodiment is an embodiment of a portable fan. The portable fan includes a fan body, and the fan body includes a fan head 3. As shown in FIGS. 5-1 to 5-7, the fan head 3 includes an outer shell 31, a fan assembly 32, an air inlet shell 33, and an air outlet shell 34. The outer shell 31 is a cylindrical shell with two open ends. The two ends of the outer shell 31 are an air inlet end A and an air outlet end B, respectively. External air enters the outer shell 31 from the air inlet end A of the outer shell 31 and is discharged from the air outlet end B of the outer shell 31. The fan assembly 32 is located inside the outer shell 31. The air inlet shell 33 is arranged at the air inlet end of the outer shell 31, and the air inlet shell 33 is provided with an air inlet passage. The air outlet shell 34 is arranged at the air outlet end of the outer shell 31, and the air outlet shell 34 is provided with an air outlet passage.

[0415] As shown in FIG. 5-2 and FIG. 5-4, the fan head 3 in the embodiment further comprises a connecting shell 37 fixedly arranged in the inner part of the outer shell 31. In the embodiment, the air inlet shell 33 is detachably connected to the end of the connecting shell 37 towards the air inlet end of the outer shell 31. Specifically, as shown in FIG. 5-2 and FIG. 5-4, the connecting shell 37 in the embodiment is connected with an assembling ring 39 on the side towards the air inlet end of the outer shell 31, and the assembling ring 39 is fixedly connected with the air inlet end of the outer shell 31. As a preferred technical solution, the outer peripheral wall of the assembling ring 39 in the embodiment is provided with a connecting ring 393, and the connecting ring 393 and the air inlet end of the outer shell 31 are clamped by a snap ring and a snap buckle. The clamping of the connecting ring 393 and the outer shell 31 in the embodiment is not limited, and other detachable connection modes of the assembling ring 39 and the outer shell 31 can also be used. As a preferred technical solution, the inner side wall of the outer shell 31 near the air inlet end is provided with a first limiting groove 317, and the top of the connecting ring 393 can be inserted into the first limiting groove 317. By providing the first limiting groove 317, the assembling ring 39 can be axially limited on the outer shell 31.

[0416] In the embodiment, the air inlet shell 33 is detachably connected to the assembling ring 39. As shown in FIG. 5-4 to FIG. 5-6, the air inlet shell 33 and the assembling ring 39 in the embodiment are detachably connected by a clamping structure 5. The specific structure of the clamping structure 5 in the embodiment is the same as that of the clamping structure 5 in the embodiment 1. Specifically, as shown in FIG. 5-5 and FIG. 5-6, the clamping structure 5 in the embodiment comprises a clamping groove 51 and a clamping block 52, and the clamping block 52 in the embodiment is arranged on the assembling ring 39. The clamping block 52 in the embodiment is in the shape of an "L" type block structure. Specifically, the clamping block 52 comprises a first block body 521 and a second block body 522 connected with each other, wherein the first block body 521 is arranged on the assembling ring 39 along the axis of the assembling ring 39, and the second block body 522 is arranged on the assembling ring 39 along the circumference of the assembling ring 39.

[0417] The clamping groove 51 is arranged on the inner side wall of the opening end of the air inlet shell 33, and the shape of the clamping groove 51 matches the shape of the clamping block 52. When the opening end of the air inlet shell 33 is butted against the assembling ring 39, rotating the air inlet shell 33 can make the clamping block 52 on the assembling ring 39 clamped in the clamping groove 51 of the air inlet shell 33, at this time, the air inlet shell 33 is axially limited on the assembling ring 39, that is, the air inlet shell 33 can be installed on the assembling ring 39. When it is needed to detach the air inlet shell 33 from the assembling ring 39, the air inlet shell 33 can be detached from the assembling ring 39 by rotating the air inlet shell 33 in the opposite direction to make the clamping block 52 out of the clamping groove 51.

[0418] As a preferred technical solution, the second block body 522 of the clamping block 52 is provided with a positioning recess 523, and the clamping groove 51 is provided with a positioning protrusion 511. When the clamping block 52 is clamped in the clamping groove 51, the positioning protrusion 511 on the clamping groove 51 is limited on the positioning recess 523 on the second block body 522. Through the arrangement of the positioning protrusion 511 and the positioning recess 523, the clamping block 52 can be self-locked and positioned, and the air inlet shell 33 can be stably assembled on the assembly ring 39. In addition, the arrangement of the positioning protrusion 511 and the positioning recess 523 can also play a prompting role. When the positioning protrusion 511 is clamped in the positioning recess 523, there will be a certain jamming feeling, which can prompt the user that the air inlet shell 33 has been installed. Through the arrangement of the assembly ring 39 and the clamping structure 5 in the embodiment, the air inlet shell 33 can be detachably connected to the air inlet end of the shell 31, so that the air inlet shell 33 is convenient to disassemble, which is beneficial to the cleaning of the air inlet shell 33 and the maintenance and replacement of internal parts.

[0419] As shown in FIGS. 5-1, 5-2, 5-4, 5-6 and 5-7, the air inlet shell 33 in the embodiment is a cylindrical structure with both ends open. The side of the air inlet shell 33 facing the air outlet end of the shell 31 is connected with the assembly ring 39, and the side of the air inlet shell 33 facing the air inlet end of the shell 31 is provided with an air inlet baffle 334. In the embodiment, the air inlet baffle 334 is coaxially arranged with the air inlet shell 33. A plurality of gratings 335 are arranged between the air inlet baffle 334 and the air inlet shell 33. Specifically, one end of the grating 335 is connected to the inner side wall of the air inlet shell 33, and the other end is connected to the outer side wall of the air inlet baffle 334.

[0420] As shown in FIGS. 5-1, 5-2, 5-4, 5-6 and 5-7, the air inlet baffle 334 is uniformly provided with air inlet openings 3341. As a preferred technical solution, the air inlet baffle 334 in the embodiment is arranged as a concave structure recessed into the air inlet shell 33. The concave structure in the embodiment is in an arc shape. Such an arrangement can expand the air inlet area, increase the air intake, and also play a role in wind gathering and guiding. Of course, in other embodiments, the air inlet baffle 334 can also be a flat plate structure arranged radially along the air inlet shell 33 or a convex structure protruding outwardly from the air inlet shell 33.

[0421] The air inlet openings 3341 of the air inlet baffle 334 and the spacing between the adjacent two gratings 335 together form the air inlet channel of the air inlet shell 33. In the embodiment, the port caliber D2 of the side of the air inlet shell 33 facing the air inlet end of the shell 31 is 1.15-1.55 times the maximum radial length D3 of the outer periphery of the air inlet baffle 334.

[0422] As shown in FIG. 5-4 and FIG. 5-7, in the embodiment, the air guide ring 336 is arranged on the inner side of the side port of the air inlet shell 33 towards the air inlet end of the shell 31, and the air guide ring 336 comprises a guide surface 3361 gradually decreasing radially from the air inlet end of the shell 31 to the air outlet end of the shell 31. In the embodiment, the guide surface 3361 of the air guide ring and the outer peripheral wall of the air inlet baffle 334 can guide the air flow well, so that the air flow can enter the air inlet along the wall, and the air inlet can be smoother, which is beneficial to increase the air inlet amount.

[0423] As a preferred technical solution, as shown in FIG. 5-8, in the embodiment, the bottom of the shell 31 is provided with a connecting hole, the outer side wall of the air inlet shell 33 is provided with a fixing protrusion 333, the fixing protrusion 333 is provided with a through hole, and the first fastener 3331 is connected with the connecting hole at the bottom of the shell 31 by penetrating the through hole of the fixing protrusion 333. In the embodiment, the connecting hole at the bottom of the shell 31 is a threaded hole, and the first fastener 3331 is a screw which can be screwed into the threaded hole. In this way, the stability of the air inlet shell 33 arranged at the air inlet end of the shell 31 can be further increased, so that the air inlet shell 33 can be firmly installed on the shell 31 when the fan body is working, and the safety of the fan body in use is improved.

[0424] As shown in FIG. 5-2 and FIG. 5-4, in the embodiment, the connecting shell 37 comprises a second outer cylinder portion 371, and in the embodiment, the second outer cylinder portion 371 is a cylindrical structure, i.e., the second outer cylinder portion 371 is a cylindrical structure with equal diameter, and the assembly ring 39 is connected with the second outer cylinder portion 371. As a preferred technical solution, the second outer cylinder portion 371 and the assembly ring 39 are integrally formed.

[0425] As shown in FIG. 5-2, in the embodiment, one end of the assembly ring 39 is connected with the second outer cylinder portion 371, and the other end of the assembly ring 39 abuts against the end portion of the air guide ring 336 towards the air outlet end of the shell 31, and the guide surface 3361 smoothly transitions to the inner side wall of the assembly ring 39.

[0426] As shown in Figure 5-2, the fan assembly 32 in this embodiment is arranged in the connecting shell 37 and assembled on the air outlet shell 34. Specifically, the fan assembly 32 includes a motor assembly 321 and a fan blade 36, the motor assembly 321 is installed on one side of the air outlet shell 34 towards the air inlet end of the shell 31, the motor assembly 321 is used to drive the fan blade 36 to rotate, and the fan blade 36 is connected to the output shaft of the motor assembly 321. Specifically, the fan blade 36 in this embodiment includes an assembly cylinder 361, a hub 362 and a plurality of blades 363, wherein the hub 362 is in the form of a conical cover structure, and specifically, the hub 362 in this embodiment is in the form of a truncated cone, and is a cover structure with one end open and one end sealed. The sealed end of the hub 362 is the conical top end 3621, which is towards the air inlet end of the shell 31, and the open end of the hub 362 is the flared end 3622, which is towards the air outlet end of the shell 31.

[0427] In this embodiment, the radial cross-sectional area of the hub 362 gradually increases from the air inlet end of the shell 31 to the air outlet end of the shell 31, and specifically, the hub 362 includes a wind guide surface 3621 that increases radially from the air inlet end of the shell 31 to the air outlet end of the shell 31. As a preferred technical solution, at least part of the wind guide surface 3621 is outwardly convex to form a convex surface.

[0428] Wherein, the assembly cylinder 361 is arranged at the flared end 3622 of the hub 362, and at least part of the assembly cylinder 361 is located inside the hub 362. In this embodiment, the assembly cylinder 361 is entirely located inside the hub 362, and specifically, one end of the assembly cylinder 361 is fixedly connected to the inner side wall of the hub 362, and the other end of the assembly cylinder 361 does not protrude beyond the flared end 3622 of the hub 362. Part of the motor assembly 321 is located inside the assembly cylinder 361, and as a preferred technical solution, the motor assembly 321 in this embodiment adopts an outer rotor brushless motor or a three-phase high-speed micro motor or other suitable motor, which is specifically selected and adapted for use according to the required requirements.

[0429] As shown in Figure 5-2, the inside of the hub 362 in this embodiment is provided with a first mounting sleeve 364. Specifically, one end of the first mounting sleeve 364 is fixedly connected with the inside of the conical top 3621 of the hub 362, and the other end of the first mounting sleeve 364 is connected with the output shaft of the motor assembly 321, and the motor assembly 321 can drive the entire fan blade 36 to rotate through the first mounting sleeve 364. As a preferred technical solution, a plurality of reinforcing plates 365 are arranged between the inner wall of the first mounting sleeve 364 and the outer wall of the hub 362, and the plurality of reinforcing plates 365 are arranged in the circumferential direction of the first mounting sleeve 364 and are spaced apart between the hub 362 and the first mounting sleeve 364. The arrangement of the reinforcing plates 365 in this embodiment can improve the stability of the first mounting sleeve 364 arranged inside the hub 362, thereby improving the stability of the entire fan blade 36 in rotation.

[0430] As shown in FIG. 5-3, the hub 362 of the present embodiment includes a wind guide portion 3624 and a blade connecting portion 3625 in the axial direction of the hub 362, and the wind guide portion 3624 and the blade connecting portion 3625 are integrally formed in the present embodiment. A plurality of blades 363 are fixedly arranged on the outer side wall of the blade connecting portion 3625 in a uniform interval in the circumferential direction of the hub 362. As a preferred technical solution, the axial length L1 of the wind guide portion 3624 is 1 / 10-3 / 10 of the entire axial length L0 of the hub 362 in the present embodiment. Such arrangement can make the wind guide portion play a good wind guiding role, so that the airflow can be smoothly transitioned to the blades, which is conducive to increasing the air inlet amount, while ensuring that the blades have sufficient extension length on the hub, which helps the blades to fully comb the airflow, thereby ensuring the air supply performance of the fan blades.

[0431] As shown in FIG. 5-3, as a preferred technical solution, the plurality of blades 363 in the present embodiment are curved and extended at a preset angle from the air inlet end of the outer shell 31 to the air outlet end of the outer shell 31 and in the circumferential direction of the hub 362. The interval distance between the end portions of the adjacent two blades 363 close to the air inlet end of the outer shell 31 is smaller than the interval distance between the end portions of the adjacent two blades 363 close to the air outlet end of the outer shell 31. As a preferred technical solution, as shown in FIG. 5-3, the side edge 3631 of the blade 363 towards the air inlet end of the outer shell 31 is outwardly turned in the opposite direction of the extension of the blade 363 in the circumferential direction of the hub 362, which is conducive to improving the wind guiding effect of the blade and improving the air inlet efficiency of the fan blade.

[0432] As shown in FIGS. 5-2 and 5-3, the air outlet shell 34 in the present embodiment is arranged on the side of the connecting shell 37 towards the air outlet end of the outer shell 31. Specifically, the air outlet shell 34 in the present embodiment includes a first outer cylinder portion 341 and a first inner cylinder portion 342, and a plurality of first connecting plates 343 are fixedly arranged between the first outer cylinder portion 341 and the first inner cylinder portion 342. The plurality of first connecting plates 343 are arranged in a uniform interval between the first outer cylinder portion 341 and the first inner cylinder portion 342 in the circumferential direction of the first outer cylinder portion 341 or the first inner cylinder portion 342, and the air outlet passages of the air outlet shell 34 are formed between the adjacent two first connecting plates 343.

[0433] As shown in FIGS. 5-2 and 5-3, the first inner cylinder portion 342 in the present embodiment is arranged in a cylindrical structure in the shape of a circular truncated cone or a truncated cone with both ends open. Specifically, the radial cross-sectional area of the first inner cylinder portion 342 gradually increases in the direction from the air inlet end of the outer shell 31 to the air outlet end of the outer shell 31. Specifically, the first inner cylinder portion 342 includes a pressurizing surface 3421 that increases radially from the air inlet end to the air outlet end. As a preferred technical solution, the pressurizing surface 3421 is at least partially radially protruding to form a convex surface.

[0434] As shown in FIG. 5-2 and FIG. 5-3, in the embodiment, the first outer cylinder portion 341 is arranged to protrude forward beyond the first inner cylinder portion 342, and the first outer cylinder portion 341 is connected to the top side of the second connecting plate 343. In the embodiment, the second outer cylinder portion 371 extends forward toward the air outlet end of the shell 31 to form a second outer cylinder extension 3711, the second outer cylinder extension 3711 abuts against the end edge of the first outer cylinder portion 341 toward the air inlet end of the shell 31, and the inner side wall of the second outer cylinder extension 3711 abuts against the top side of the first connecting plate 342 closely, and the inner side wall of the second outer cylinder extension 3711 is smoothly connected to the inner side wall of the first outer cylinder portion 341.

[0435] In the embodiment, the edge of the second outer cylinder extension 3711 abuts against the edge of the first outer cylinder portion 341 toward the air inlet end of the shell 31 closely, and the two are connected by clamping and buckling. In the embodiment, the second outer cylinder extension 3711 and the first outer cylinder portion 341 are connected by clamping, which is not a limitation, and other connection modes can be used. The outer top of the first outer cylinder portion 341 toward the air outlet end of the shell 31 is fixedly connected to the air outlet end of the shell 31. In the embodiment, the first outer cylinder portion 341 and the shell 31 are limitingly inserted, specifically, the outer side wall of the first outer cylinder portion 341 is provided with a second limiting insertion block 3413, and the inner side wall of the shell 31 near the air outlet end is provided with a second limiting groove 318. When the air outlet shell 341 is installed in the shell 31, the second limiting insertion block 3413 can be inserted into the second limiting groove 318. The second limiting insertion block 3413 and the second limiting groove 318 can axially limit the air outlet shell 341 in the shell 31, thereby improving the stability of the air outlet shell 341 in the shell 31. In the embodiment, the connection mode of the first outer cylinder portion 341 and the shell 31 is not a limitation, and other connection modes can be used.

[0436] In the embodiment, a transition channel is formed between the second outer cylinder extension 3711 and the first inner cylinder portion 342 toward the second outer cylinder extension 3711, and the transition channel is located between the air outlet channel and the flow guide channel, and the two ends of the transition channel are smoothly connected to the flow guide channel and the air outlet channel, respectively.

[0437] As shown in FIG. 5-2, in the embodiment, the part of the first outer cylinder portion 341 connected to the first connecting plate 343 is a first outer cylinder connecting portion 3411, and the first outer cylinder connecting portion 3411 is in a cylindrical shape, and the inner side wall of the first outer cylinder connecting portion 3411 is arranged to have an equal diameter. In the embodiment, the inner side wall of the first outer cylinder connecting portion 3411 and the pressurizing surface 3421 of the first inner cylinder portion 342 make the radial cross-sectional area of the air outlet channel gradually decrease from the air inlet end of the shell 31 to the air outlet end of the shell 31, which can pressurize the air and further increase the air supply distance and the air inlet suction force.

[0438] The flow guide channel formed by the fan blade 36 and the second outer cylinder portion 371, the air outlet channel formed by the first outer cylinder connecting portion 3411, the first inner cylinder portion 342 and the first connecting plate 343, and the transition channel formed between the second outer cylinder extension portion 3711 and the first inner cylinder portion 342 together form a pressurized channel in the fan head 3 of the embodiment, the pressurized flow channel makes the airflow obliquely guide and outlet, and is gradually pressurized, which greatly increases the air outlet volume, air supply distance and air inlet suction.

[0439] As a preferred technical solution, as shown in FIG. 5-3, in the embodiment, the first connecting plate 343 is gradually curved and inclined from the air outlet end of the outer shell 31 to the air inlet end of the outer shell 31 and along the circumference of the first inner cylinder portion 342, so that the two side surfaces of the first connecting plate 343 form an outer convex surface 3431 and an inner concave surface 3432 respectively. In the embodiment, the outer convex surface 3431 faces the air inlet end of the outer shell 31, and the inner concave surface 3432 faces the air outlet end of the outer shell 31. Such arrangement enables the first connecting plate 343 to better comb and transform the airflow flowing to the air outlet shell 33, which can guide the airflow and make the air outlet smoother, thereby being beneficial to increasing the air outlet distance and reducing noise.

[0440] As a preferred technical solution, as shown in FIG. 5-2, in the embodiment, the first outer cylinder portion 341 further includes a first outer cylinder extension portion 3412, which is arranged in an integral molding structure with the first outer cylinder connecting portion 3411, and the inner side wall of the first outer cylinder extension portion 3412 extends along the axial direction and is outwardly curved, i.e., the entire first outer cylinder extension portion 3412 is in a flared shape. The flared shape of the first outer cylinder extension portion 3412 in the embodiment can guide the air outlet fluid and be beneficial to increasing the air outlet range and improving the user's use comfort.

[0441] As shown in FIG. 5-2, in the embodiment, the first inner cylinder portion 342 is internally provided with a mounting partition plate 345, which is arranged in the first inner cylinder portion 342 along the radial direction of the first inner cylinder portion 342. In the embodiment, a second mounting sleeve 346 is mounted on the side of the mounting partition plate 345 facing the air inlet end of the outer shell 31, and the motor assembly 321 is fixedly assembled on the second mounting sleeve 364.

[0442] As shown in FIG. 5-3, in the embodiment, the axial distance D5 between the flared end 3622 of the hub 362 and the end portion of the first inner cylinder portion 342 facing the air inlet end of the outer shell 31 is between 0.5 mm and 3 mm. The arrangement of the axial distance D5 not only ensures that the fan blade 36 has a rotating space, i.e., does not limit or hinder the normal rotation of the fan blade 36, but also enables the airflow formed by the fan blade 36 to smoothly flow to the air outlet shell 34, which is beneficial to reducing the noise generated by turbulence.

[0443] As shown in FIG. 5-2, in the embodiment, the first cover 348 is installed on the end of the first inner cylinder part 342 close to the air outlet end of the shell 31. In the embodiment, the front surface 3481 of the first cover 348 is set as a concave surface formed by being concave backward. In the embodiment, the first cover 348 is set as a concave structure, a negative pressure area is formed at the region of the first cover 348, and part of the airflow flowing out of the air outlet channel 344 will flow to the negative pressure area, but will be pulled back to flow by most of the airflow flowing out of the air outlet channel 344 to form a vortex, so that the part of the airflow flows forward again, which can reduce the loss of air volume and wind energy, and achieve the effect of converging fluid and more concentrated air outlet.

[0444] In other embodiments, the front surface 3481 of the first cover 348 can be set as a convex surface formed by being convex forward. If the first cover 348 is set as a convex structure, the fluid will flow forward along the convex surface, which can also reduce the loss of air volume and wind energy to a certain extent.

[0445] As a preferred technical solution, as shown in FIG. 5-2, in the embodiment, the lamp assembly is arranged between the side of the partition plate 345 facing the air outlet end of the shell 31 and the first cover 348. Specifically, the lamp assembly includes a mounting seat 351 and an LED lamp bead plate 352. In the embodiment, the mounting seat 351 is arranged on the side of the partition plate 345 facing the air outlet end of the shell 31, and in the embodiment, the mounting seat 351 is fixedly arranged on the side of the partition plate 345 facing the air outlet end of the shell 31 by screws.

[0446] In the embodiment, the side of the mounting seat 351 facing the air outlet end of the shell 31 is concave inward to form a containing cavity 3511, the LED lamp bead plate 352 is arranged inside the containing cavity 3511, and the bottom of the containing cavity 3511 is provided with a wire hole for the power supply connecting the LED lamp bead plate 352. In the embodiment, the first cover 348 is detachably connected to the cavity opening position of the containing cavity 3511 of the mounting seat 351, and in the embodiment, the first cover 348 is connected to the cavity opening position of the containing cavity 3511 of the mounting seat 351 in a buckle connection manner. In the embodiment, the side wall of the mounting seat 351 between the end of the first inner cylinder part 342 facing the air outlet end of the shell 31 and the first cover 348 is made of transparent or translucent material, and the light emitted by the LED lamp bead plate 352 can be transmitted through the side wall. In the embodiment, the LED lamp bead plate is hiddenly arranged, and the light is reflected out from the inner wall of the air outlet shell, so that the light is softer.

[0447] As a preferred technical solution, the shell 31 in the embodiment is provided in a two-part split structure. Specifically, as shown in FIG. 5-4, the shell 31 includes a first half shell 311 and a second half shell 312, and the first half shell 311 and the second half shell 312 are butted to form a complete shell 31. Specifically, the side edges of the first half shell 311 and the second half shell 312 in the embodiment are respectively provided with a first butt joint 313 and a second butt joint 314, wherein the first butt joint 313 is provided with a first connecting hole (not shown in the figure), and the second butt joint 314 is provided with a second connecting hole 3141. Specifically, the first connecting hole and the second connecting hole 3141 in the embodiment are both perforations, and the outer side of the second inner cylinder portion 372 is provided with a connecting hole column (not shown in the figure). Specifically, the connecting hole column is a threaded hole column. When the first half shell 311 and the second half shell 312 are butted, the first butt joint 313 can be inserted into one side of the second butt joint 314, and the positions of the first connecting hole, the second connecting hole 3141, and the connecting hole column (not shown in the figure) correspond. By arranging fasteners such as screws in the first connecting hole, the second connecting hole 3141, and the connecting hole column, the first half shell 311 and the second half shell 312 can be butted and fixed together to realize stable connection of the shell 31 and the second outer cylinder portion 371.

[0448] In other embodiments, the first connecting hole and the second connecting hole 3141 are both provided as threaded holes. By fixing screws in the first connecting hole and the second connecting hole 3141, the first butt joint 313 and the second butt joint 314 can be fixed together, and the first half shell 311 and the second half shell 312 can be butted to form a complete shell 31. The stable butt joint connection of the first half shell 311 and the second half shell 312 can be completed without cooperation with the second outer cylinder portion 371.

[0449] In order to further improve the stability of the butt joint of the first half shell 311 and the second half shell 312 and facilitate the installation of the screws and other fasteners at the first connecting hole, the second connecting hole 3141, and the connecting hole column, the edges of the first half shell 311 and the second half shell 312 in the embodiment are respectively provided with buckles and clamps. The positioning clamping of the first half shell and the second half shell is realized through the clamping of the buckles and the clamps. Only the structure of the clamp 3142 is shown in FIG. 5-4, and the structure of the clamp 3142 shown in FIG. 5-4 is not a limiting provision. Other structures that can realize the positioning clamping of the first half shell 311 and the second half shell 312 are also available.

[0450] As a preferred technical solution, the second cover 315 is arranged on the shell 31 at the positions of the first and second connecting members 313 and 314, and can shield the first and second connecting members 313 and 314, thereby improving the appearance of the entire shell 31. In the embodiment, the second cover 315 is detachably connected to the first and / or second connecting members 313 and 314. Specifically, the second cover 315 is provided with a connecting column (not shown in the figure) on the side facing the shell 31, and the first and second connecting members 313 and 314 are provided with corresponding connecting holes 316, which are matched with the shape of the connecting column. When the second cover 315 is closed at the positions of the first and second connecting members 313 and 314, the connecting column on the second cover 315 can be inserted into the connecting hole 316. As a preferred technical solution, the edge of the second cover 315 is clamped on the edge of the shell 31 at the positions of the first and second connecting members 313 and 314.

[0451] As shown in FIG. 5-1, the fan body of the embodiment further includes a base 2 and an electric control assembly, and the fan head 3 is arranged on the base 2. In the embodiment, the base 2 is a hollow structure, and the electric control assembly includes a charging battery pack, a charging board, a control circuit board 73 and other components, wherein the charging battery pack and the charging board are electrically connected and arranged in the base 2. The base 2 is further provided with a charging interface 71 on the side wall near the air inlet end of the shell 31, and the charging interface 71 is electrically connected to the charging board.

[0452] As a preferred technical solution, as shown in FIG. 5-2, the control circuit board 73 is arranged on the top of the fan head 3 in the embodiment. Specifically, the control circuit board 73 is arranged between the shell 31 and the second outer cylinder part 371, and is fixed on the second outer cylinder part 371 by screws. By arranging a wire passing channel between the fan head 3 and the base 2, the control circuit board 73 is electrically connected to the charging battery pack and the charging board.

[0453] The control circuit board 73 in the embodiment is electrically connected with a plurality of keys. Specifically, the control circuit board 73 in the embodiment is provided with a fan starting and wind power adjusting key 74 and a light key 75. The fan starting and wind power adjusting key 74 is used for controlling the start and stop of the fan and adjusting the wind power gear. The wind power adjusting gear in the embodiment is 1-5 gears. The light key 75 is used for controlling the opening and closing of the light and adjusting the gear. As a preferred technical solution, the control circuit board 73 in the embodiment is further provided with a display screen module 76. The display screen module 76 can display the information such as the power of the fan or the wind power gear, thereby further improving the user experience. Correspondingly, the top of the shell 31 is provided with an opening for the fan starting and wind power adjusting key 74, the light key 75 and the display screen module 76 to extend out of the opening.

[0454] In order to improve the safety of the fan body, as shown in FIGS. 5-2 and 5-5, the control circuit board 73 in the embodiment is further provided with a sensor 78. The connecting ring 393 is provided with an opening for the sensor to extend out of. The sensor 78 is arranged in cooperation with the air inlet shell 33 and is used for detecting whether the air inlet shell 33 is located at a preset displacement position point. The sensor 78 can be triggered when the air inlet shell 33 is located at the preset displacement position point or the air inlet shell 33 is not located at the preset displacement position point. The sensor 78 in the embodiment is a displacement detection switch. Specifically, when the air inlet shell 33 is detached from the air inlet end of the shell 31 or the air inlet shell 33 is not assembled to the preset position of the air inlet end of the shell 31, the fan body is automatically powered off and cannot be started. When the air inlet shell 33 is assembled to the preset position of the air inlet end of the shell 31, the fan body can be normally powered on.

[0455] As a preferred technical solution, as shown in FIG. 5-2, the mounting partition plate 345 in the embodiment is further provided with a wire hole 347. The first connecting plate 343 of the air outlet shell 34 close to the control circuit board 73 is provided in a hollow structure and the outside and the inside of the air outlet shell 34 are connected. One end of the wire for electrically connecting the motor assembly 321 and the control circuit board 73 is electrically connected with the motor assembly 321. The other end can pass through the wire hole 347 of the mounting partition plate 345 and pass through the hollow first connecting plate 343 to the outside of the air outlet shell 34 and be electrically connected with the control circuit board 73. The wire for electrically connecting the light assembly also passes through the hollow first connecting plate 343 to the outside of the air outlet shell 34 and is electrically connected with the control circuit board 73.

[0456] In order to further improve the safety of the fan body, as shown in Figure 5-1, the base 2 is provided with a protection switch 79. The protection switch 79 is arranged at the position of the charging plate. The protection switch 79 can control the power supply circuit of the fan body to be on or off. In the embodiment, the protection switch 79 is arranged as a toggle switch. When the protection switch 79 is toggled to one end, the power supply circuit of the fan body is on, and at this time the motor assembly in the fan body can drive the fan blades to rotate. When the protection switch 79 is toggled to the other end, the power supply circuit of the fan body is off, and all functions are turned off. At this time, the motor assembly in the fan body does not work, and the fan blades do not rotate. The arrangement of the protection switch 79 can effectively prevent the accidental start of the fan due to the accidental operation of the switch key.

[0457] As shown in Figure 5-1, the portable fan of the embodiment further comprises a pitch adjusting structure 4. The fan head 3 is arranged on the base 2 through the pitch adjusting structure 4. Specifically, as shown in Figures 5-9 to 5-12, the top of the seat body 21 is provided with a mounting seat 214. The pitch adjusting structure comprises a connecting shaft 41 and a connecting arm 42. In the embodiment, two connecting arms 42 are arranged. The two connecting arms 42 are arranged at the bottom of the fan head 3. Specifically, the two connecting arms 42 are arranged on the outer side wall of the housing 31. The mounting seat 214 is located between the two connecting arms 42.

[0458] In the embodiment, the mounting seat 214 is provided with a connecting shaft 41 on each of the two opposite side walls facing the two connecting arms 42. Specifically, in the embodiment, the connecting shaft 41 is rotationally inserted into the mounting seat 214. In order to further improve the connection stability of the connecting shaft 41 and the mounting seat 214, the connecting shaft 41 is fixedly connected to the side wall of the mounting seat 214 by screws or pins. The two connecting arms 42 are rotationally connected to the two connecting shafts 41 on the mounting seat 214.

[0459] As shown in Figure 5-10, the connecting arm 42 of the embodiment comprises a main body part 421. The main body part 421 is rotationally sleeved on the connecting shaft 41. The main body part 421 is provided with a connecting through hole 425 for the insertion of the connecting shaft 41. The end of the connecting through hole 425 away from the mounting seat 214 is provided with a limiting step 426.

[0460] As shown in Figure 5-11, the end of the connecting shaft 41 away from the mounting seat 214 is provided with a limiting piece 411. Specifically, in the embodiment, the limiting piece 411 is coaxially arranged on the end of the connecting shaft 41. The diameter of the limiting piece 411 is greater than the hole diameter of the connecting through hole 425. The limiting piece 411 abuts against the limiting step 426.

[0461] When the connecting arms 42 and the connecting shaft 41 are assembled in this embodiment, the mounting seat 214 is first placed between the two connecting arms 42, the connecting shaft 41 is inserted through the connecting through hole 425 on the main body part 421, the limiting part 411 abuts against the limiting step 426, and the connecting shaft 41 is firmly fixed on the mounting seat 214 by screws or pins.

[0462] As a preferred technical solution, the port of the connecting through hole 425 away from the mounting seat 214 is provided with a cover 4251, and the cover 4251 can hide the connecting shaft 41 and the limiting part 411 in the main body part 421, which not only plays a protective role, but also improves the aesthetics of the portable fan.

[0463] When the pitch angle of the fan head 3 needs to be adjusted, the fan head 3 is rotated, the connecting arms 42 can rotate around the connecting shaft 41, and the pitch angle of the fan head 3 can be changed. In order to fix the pitch angle of the fan head 3 after adjustment, and to ensure the blowing angle of the fan head 3 after adjustment, the pitch adjustment structure 4 further comprises a rotation positioning assembly.

[0464] In this embodiment, the rotation positioning assembly is selected as a friction plate 44, and the friction plate 44 is a rubber ring or a damping ring. It should be noted that the selection of the rubber material of the friction plate 44 in this embodiment is not limited by the present application, and other materials can also be selected for the friction plate 44, as long as the friction force can be used to make the fan head 3 rotate with damping, and the positioning and self-locking of the fan head 3 can be realized.

[0465] Specifically, in this embodiment, the friction plate 44 is arranged at the rotating connection between the connecting shaft 41 and the connecting arm 42, and the friction plate 44 is sleeved on the connecting shaft 41. In this embodiment, the friction plate 44 is located between the limiting part 411 and the limiting step 426. In this embodiment, the friction force of the friction plate 44 is used to make the fan head 3 rotate with damping, and after rotation, it can be positioned and self-locked. Through the arrangement of the friction plate 44, the stepless positioning and self-locking function of the fan head 3 can be realized.

[0466] In this embodiment, the two connecting arms 42 are fixed to the bottom of the shell 31 by the assembly part 46. Specifically, the connecting arms 42 are arranged at the two ends of the bottom of the assembly part 46, and the top of the assembly part 46 is fixedly installed on the bottom of the shell 31. As a preferred technical solution, the two connecting arms 42, the assembly part 46 and the shell 31 are integrally formed in this embodiment. In other embodiments, the two connecting arms 42 and the assembly part 46 can be integrally formed, and then the assembly part 46 is fixed to the bottom of the shell 31 by screws or the like.

[0467] As a preferred technical solution, the rotation angle of the connecting arm 42 is also limited in this embodiment to prevent excessive rotation angle and cause collision and wear between structures. The pitch adjustment structure 4 in this embodiment further comprises a rotation angle limiting assembly. Specifically, as shown in FIGS. 5-10, the bottom of the assembly 46 between the two connecting arms 42 is recessed inward to form an arc-shaped accommodating recess 461, and the top of the mounting seat 214 is provided with an arc-shaped protrusion 2141, and the top of the arc-shaped protrusion 2141 is arc-shaped. When the connecting arm 42 is installed on the connecting shaft 41, the arc-shaped protrusion 2141 is located in the accommodating recess 461.

[0468] As shown in FIGS. 5-9 to 5-12, the rotation angle limiting assembly comprises a limiting block 451 and a limiting groove 452. In this embodiment, the limiting block 451 is arranged at the top of the arc-shaped protrusion 2141, and the limiting groove 452 is arranged at the inner bottom of the accommodating recess 461. Of course, in other embodiments, the limiting block 451 can also be arranged at the inner bottom of the accommodating recess 461, and the limiting groove 452 is arranged at the top of the arc-shaped protrusion 2141.

[0469] When the arc-shaped protrusion 2141 is located in the accommodating recess 461, the limiting block 541 is limited in the limiting groove 452. The length of the limiting groove 452 can be limited according to actual needs, thereby limiting the angle range of the rotation of the connecting arm 42.

[0470] As a preferred technical solution, the mounting seat 214 is rotatably installed on the top of the seat body 21 through a rotating structure. Specifically, the top of the seat body 21 is recessed downward to form a mounting recess 219, and a through hole is arranged at the middle position of the mounting recess 219. The rotating structure comprises a rotating part 231, an assembly protrusion 232 and a limiting piece 233. The rotating part 231 is rotatably arranged at the mounting recess 219, the mounting seat 214 is fixedly arranged at the top of the rotating part 231, the assembly protrusion 232 is fixedly arranged at the bottom of the rotating part 231 and can extend into the through hole of the mounting recess 219, and the limiting piece 233 is arranged inside the seat body 21. The limiting piece 233 is fixedly connected with the assembly protrusion 232 through a screw or a pin, and the arrangement of the limiting piece 233 can effectively prevent the rotating part 231 from being pulled out of the mounting recess 219.

[0471] Through the arrangement of the rotating structure, the blowing angle of the fan head 3 in the horizontal direction can be adjusted by manually rotating the fan head 3. As shown in FIG. 5-11, a damping member 47 is arranged between the limiting piece 233 and the inner wall of the seat body 21. In this embodiment, the damping member 47 is a damping ring or a rubber ring, and the damping member 47 in this embodiment is made of rubber. It should be noted that the selection of the damping member 47 made of rubber in this embodiment is not a limitation of the present application. The damping member 47 can also be made of other materials, as long as it can utilize the friction force to make the fan head 3 have a damping rotation, and realize the positioning and self-locking of the fan head 3.

[0472] As a preferred technical solution, as shown in FIGS. 5-12, the bottom of the rotating part 231 is provided with a plurality of sliding protrusions 2312, which are arranged at the bottom of the rotating part 231 in a circumferential direction and can be in the form of protruding strips or hemispherical protrusions. The sliding protrusions 2312 can greatly reduce the friction of the rotating part 231 when rotating in the mounting recess 219, thereby improving the smoothness of manually adjusting the horizontal blowing angle of the fan head, and further improving the user experience.

[0473] As a preferred technical solution, as shown in FIGS. 5-9, the through hole of the mounting recess 219 is provided with a limiting groove 2191 capable of limiting the rotating angle of the rotating part 231. The limiting groove 2191 is arranged at the upper end edge of the through hole of the mounting recess 219 and along the circumferential direction of the through hole. The outer side wall of the assembly protrusion 232 is provided with a limiting protrusion 2321 capable of sliding in the limiting groove 2191. The arc of the limiting groove 2191 can be limited according to actual needs, thereby limiting the angle range of the horizontal rotation of the fan head 3. As a preferred technical solution, the arc of the limiting groove 2191 in the embodiment is 180°.

[0474] As a preferred technical solution, the end of the two connecting arms 42 close to the rotating part 231 is in the form of an arc. The top of the rotating part 231 is provided with an arc-shaped groove 2311 for accommodating or movably abutting the connecting arms 42.

[0475] As a preferred technical solution, the wire layout for electrically connecting the electric control assembly and the fan assembly is arranged at the pitch adjustment structure in the embodiment. The overline channel 215 is arranged on the mounting seat 214 in the embodiment. Correspondingly, a channel is arranged on the rotating structure for connecting the overline channel 215 and the inside of the seat body 21. Channels or openings are arranged on the connecting arms or / and the fan head for connecting the overline channel 215 and the inside of the fan head.

[0476] The portable fan in the embodiment further comprises a clamping jaw structure. The clamping jaw structure in the embodiment is the clamping jaw structure in the second embodiment described in solution 1. The clamping jaw structure in the embodiment is detachably connected to the fan body. Specifically, the clamping jaw structure in the embodiment is detachably arranged on the base through the pressing buckle structure and the docking structure. Such arrangement enables people to select the use mode of the fan according to their own use needs, i.e., the fan body can be clamped on a desktop or a rod-shaped object for use, wherein the rod-shaped object is, for example, a guardrail of a baby carriage or a bedside guardrail, etc. The fan body can also be held in a handheld form for use or placed on a desktop for use, thereby further expanding the use scenarios of the fan.

[0477] As shown in FIG. 5-13, the base 2 of the embodiment is hollow and formed by two half shells. In the embodiment, the two half shells are connected in an up-down manner. Of course, in other embodiments, the two half shells can be connected in a left-right manner. In the embodiment, a U-shaped bracket 25 is fixedly arranged in the base 2. Specifically, the U-shaped bracket 25 is arranged in the lower half shell. In the embodiment, the rechargeable battery pack is arranged in the U-shaped bracket 25.

[0478] In the embodiment, the pressing buckle structure includes a pressing buckle 8 and a second elastic member 9. The pressing buckle 8 is at least partially arranged in the base 2 and can move in the base 2. Specifically, the pressing buckle 8 includes a main body part 81, a pressing part 82, and a buckle part 83. The main body part 81 is movably arranged between the inner bottom of the base 2 and the U-shaped bracket 25. The pressing part 82 is fixedly arranged on the main body part 81 and at least partially extends to the outside of the base 21. The pressing part 82 is arranged to facilitate the pressing operation of the user. The side wall of the base 2 is provided with a through hole 23 for the pressing part 82 to extend out.

[0479] In the embodiment, the buckle part 83 is in an "L" shape and arranged at the bottom of the main body part 81. The bottom cover 22 is provided with a bottom opening 225 for the buckle part 83 to extend out. The buckle part 83 extends out of the base 2 through the bottom opening 225 and is buckled with the abutting structure on the jaw structure.

[0480] As a preferred technical solution, the main body part 81, the pressing part 82, and the buckle part 83 are integrally formed.

[0481] As shown in FIG. 5-13, the inner bottom of the base 2 is provided with a sliding rail 222. The main body part 81 is slidably arranged on the sliding rail 222. The sliding rail 222 can improve the smoothness of the sliding of the main body part 81 on the base 2.

[0482] As shown in FIG. 5-13, the second elastic member 9 is a spring in the embodiment. One end of the second elastic member 9 abuts against the pressing part 82, and the other end abuts against the outer side wall of the U-shaped bracket 25. In the embodiment, the side wall of the pressing part 82 abutting against the second elastic member 9 is provided with a first supporting column 821. The outer side wall of the U-shaped bracket 25 is provided with a third supporting column 251. The two ends of the second elastic member 9 are respectively sleeved on the first supporting column 821 and the third supporting column 251. The first supporting column 821 and the third supporting column 251 can stably fix the second elastic member 9 between the pressing part 82 and the U-shaped bracket 25.

[0483] As shown in FIG. 5-14, two second limiting plates 2171 are arranged on the outer side wall of the U-shaped frame 25 at intervals, the main body part 82 is limited between the two second limiting plates 2171, and can only move along the limiting passage formed between the two limiting plates 2171, so that the main body part 82 can only move in the pressing direction. In the embodiment, the second limiting plate 2171 extends to the bottom of the U-shaped frame 25, and the end part of the main body part 82 located at the bottom of the U-shaped frame 25 is provided with a hook part 822, which can abut against the end part of the second limiting plate to limit. Through the arrangement of the hook part 822, the stability of the installation of the main body part 81 in the base 2 can be further improved.

[0484] In order to further improve the stability of the installation and pressing movement of the pressing buckle 8 in the base 2, as shown in FIG. 5-14, a guide rail 252 is arranged on the outer side wall of the U-shaped frame 25, and a guide groove 823 is arranged on the inner side of the pressing part 82, and the guide rail 252 and the guide groove 823 are in sliding connection.

[0485] As a preferred technical solution, in the embodiment, the bottom of the buckle part 83 is flush with the bottommost part of the base 2, so that after the fan body is disassembled from the claw structure, the fan body can be stably placed on the table surface for use.

[0486] Since the pressing buckle structure is provided with two groups in the embodiment, correspondingly, the structures such as the slide rail 222, the third supporting column 251, the second limiting plate 2171 and the guide rail 252, which are arranged in cooperation with the pressing buckle structure, are also provided with two groups.

[0487] As shown in FIG. 5-13, in the embodiment, the top of the fixed clamping piece 11 of the claw structure is provided with a butt joint structure, and in the embodiment, the butt joint structure is provided as a butt joint block 167. Specifically, in the embodiment, the butt joint block 167 is in an inverted "L" shape, and the buckle part 83 can be clamped with the clamping block 167. In the embodiment, two butt joint blocks 167 are arranged, and the two butt joint blocks 167 are clamped with the two buckle parts 83 respectively.

[0488] As a preferred technical solution, as shown in FIG. 5-13, in the embodiment, the edge of the fixed clamping piece 11 extends upward to form a surrounding edge 19, and the bottom of the base 2 can extend into the inside of the surrounding edge 19. When the fan body needs to be assembled on the claw structure, first, the base 2 is placed in the surrounding edge 19 of the fixed clamping piece 11, and then the buckle part 83 is clamped with the clamping block 167. The arrangement of the surrounding edge 19 can further improve the clamping efficiency of the pressing buckle structure and the butt joint structure, and further improve the concealment of the pressing buckle structure.

[0489] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0490] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application. The above-described embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A portable fan characterized by, The fan body is connected with the clamping jaw structure, the clamping jaw structure comprises a fixed clamping piece, a movable clamping piece and an adjusting assembly for adjusting the opening degree between the fixed clamping piece and the movable clamping piece, the movable clamping piece is movably connected with the fixed clamping piece, and the adjusting assembly is connected with the fixed clamping piece and / or the movable clamping piece; the fan body comprises a fan head, a base and a pitch adjusting structure, the fan head is rotatably connected with the base through the pitch adjusting structure, and the fixed clamping piece is connected with the base.

2. The portable fan of claim 1, wherein, The adjusting assembly comprises a moving block and a driving member connected with the moving block, the driving member is rotatably connected with the fixed clamping piece and axially limited on the fixed clamping piece; the driving member comprises a screw rod portion, an external thread is arranged on the screw rod portion, the moving block is sleeved on the screw rod portion, the moving block is threadedly connected with the screw rod portion, and the moving block is circumferentially rotatably limited on the screw rod portion; the movable clamping piece comprises an assembly portion, a clamping groove is arranged on the assembly portion, and the moving block is movably clamped in the clamping groove; when the moving block moves, the moving block can abut against the side wall of the clamping groove and drive the movable clamping piece to rotate.

3. The portable fan of claim 2, wherein, The clamping groove is arranged as a U-shaped groove at the end of the assembly portion, and the moving block is movably clamped in the U-shaped groove. Or the clamping groove is arranged as a strip-shaped groove extending out of the assembly portion, and the moving block comprises a clamping portion movably clamped in the strip-shaped groove.

4. The portable fan of claim 2, wherein, When the clamping groove is rotated to the position directly above the rotation center line of the movable clamping piece, the bottom end of the moving block abuts against or has a gap with the bottom of the clamping groove.

5. The portable fan of claim 2, wherein, An installation cavity is arranged in the fixed clamping piece, the moving block, the screw rod portion and part of the assembly portion are located in the installation cavity, an assembly opening is arranged on the fixed clamping piece for the assembly portion to extend into, and the driving member further comprises a handle fixedly connected with the end portion of the screw rod portion, and the handle is at least partially located outside the fixed clamping piece.

6. The portable fan of claim 1, wherein, An installation through hole is arranged on the movable clamping piece, a connecting block is arranged in the installation through hole, the adjusting assembly comprises a screw rod rotatably connected with the fixed clamping piece, the screw rod is arranged on the connecting block and is threadedly connected with the connecting block, and the movable clamping piece is provided with a avoiding hole for the screw rod to pass through.

7. The portable fan of claim 1, wherein, The pitch adjusting structure comprises a connecting shaft and a connecting arm, the connecting shaft and the connecting arm are rotatably connected, a rotation positioning assembly is arranged at the rotation connection position of the connecting shaft and the connecting arm, and the connecting shaft and the connecting arm are respectively fixedly arranged on the fan head and the base or the base and the fan head; the pitch adjusting structure is arranged at the positions on both sides of the end portion of the base, at the middle position of the end portion of the base or at the middle position of the top of the base; and the rotation positioning assembly is a friction plate arranged at the rotation connection position of the connecting shaft and the connecting arm.

8. The portable fan of claim 7, wherein, The connecting shaft is arranged on the base, and the connecting arm is arranged on the fan head; the connecting arm comprises a main body part and a connecting part arranged on the top of the main body part, the connecting part is detachably connected to the bottom of the fan head, and the main body part is rotationally connected to the connecting shaft; a limiting piece is arranged on the connecting shaft, a connecting through hole is arranged on the main body part for inserting the connecting shaft, and a limiting step is arranged at the end of the connecting through hole away from the base; when the connecting arm is installed on the connecting shaft, the limiting piece abuts against the limiting step.

9. The portable fan of claim 1, wherein, The pitch adjusting structure comprises a connecting shaft, a connecting arm rotationally sleeved on the connecting shaft, a pressing piece circumferentially limited on the connecting shaft and axially movable along the connecting shaft, and a first elastic piece capable of driving the pressing piece to reset; the first elastic piece abuts against the pressing piece, and the connecting shaft and the connecting arm are respectively arranged on the fan head and the base or the base and the fan head; the pressing piece and the connecting arm are respectively provided with a first locking piece and a second locking piece capable of being locked with each other; When the first locking piece and the second locking piece are locked, the fan head is in a state of being unable to rotate; when the pressing piece is moved to separate the first locking piece and the second locking piece from each other, the fan head can rotate relative to the base.

10. The portable fan of claim 9, wherein, The connecting arm is provided with an assembly through hole for the connecting shaft to pass through, the pressing piece is sleeved on the end of the connecting shaft and located between the connecting shaft and the assembly through hole; the first locking piece is a plurality of protruding teeth arranged on the outer wall of the pressing piece in the circumferential direction; the second locking piece is a plurality of limiting teeth arranged on the inner wall of the assembly through hole in the circumferential direction, and the plurality of protruding teeth can be engaged with the plurality of limiting teeth; the end of the assembly through hole away from the connecting shaft is provided with a limiting ring capable of abutting against the plurality of protruding teeth to prevent the pressing piece from being pulled out of the assembly through hole.

11. The portable fan of claim 1, wherein, The pitch adjusting structure comprises a connecting shaft and a connecting arm, two connecting arms are arranged on the bottom of the fan head, an installation seat capable of being arranged between the two connecting arms is arranged on the top of the base, two connecting shafts are arranged on the two outer side walls of the installation seat respectively facing the two connecting arms, and the two connecting arms are rotationally connected with the two connecting shafts on the installation seat; a rotation positioning assembly is arranged at the rotationally connected position of the connecting shaft and the connecting arm, and the installation seat is rotationally installed on the top of the base through a rotation structure.

12. The portable fan of claim 11, wherein, The base is hollow, the top of the base is concave downward to form an installation recess, and a through hole is arranged at the middle position of the installation recess; the rotation structure comprises a rotating part rotationally arranged in the installation recess and an assembly protrusion arranged at the bottom of the rotating part and capable of extending into the through hole; the base is internally provided with a limiting piece for limiting the rotating part from being separated from the installation recess, the limiting piece is fixedly connected with the assembly protrusion, the installation seat is fixedly arranged on the top of the rotating part, and a damping piece is arranged between the limiting piece and the inner wall of the base.

13. The portable fan of claim 1, wherein, The pitch adjusting structure comprises a first connecting piece arranged at the bottom of the fan head and a second connecting piece arranged at the top of the base, the first connecting piece and the second connecting piece are connected in pitch rotation, a rotation positioning assembly for positioning the angle of the fan head after rotation is arranged at the rotation connecting position of the first connecting piece and the second connecting piece, the top of the base is provided with a mounting seat, the second connecting piece is arranged as a half-sphere cover, the half-sphere cover is fixedly arranged on the mounting seat, the first connecting piece is arranged as a half-sphere body, the half-sphere body is located in the half-sphere cover, the top of the half-sphere cover is provided with an avoiding hole, the bottom of the fan head is provided with an assembling piece capable of being fixedly connected with the top of the half-sphere body through the avoiding hole, the half-sphere body can slide relatively in the half-sphere cover, so that the fan head can make pitch movement relative to the base, the bottom of the half-sphere body is provided with an abutting rod capable of abutting to the mounting seat.

14. The portable fan of claim 13, wherein, The top of the mounting seat is concave to form a groove, the abutting rod abuts to the groove, the groove comprises a bottom wall, a front side wall and a rear side wall, the front side wall and the rear side wall are two opposite side walls of the groove arranged along the axial direction of the fan head, the bottom wall is in arc structure, the front side wall and the rear side wall are both arranged outwardly inclined, the front side wall and the rear side wall are both smoothly transitioned to the bottom wall, the bottom surface of the abutting rod is arranged as an arc surface, when the abutting rod is placed in the groove, the arc surface of the abutting rod abuts to the bottom wall of the groove, the distance between the front side wall and the rear side wall of the groove along the axial direction of the fan head is greater than the width of the abutting rod along the axial direction of the fan head.

15. The portable fan of claim 13, wherein, The base is hollow, the mounting seat is located in the base, the top of the base is provided with a through hole, the half-sphere cover is fixedly connected with the mounting seat through the through hole, the base is provided with a support plate, the mounting seat is rotatably arranged on the support plate through a rotation structure, the rotation structure comprises a motor arranged in the base, a first gear connected with the output shaft of the motor, a second gear engaged with the first gear and a spring plate fixedly arranged on the mounting seat, the spring plate is provided with a convex tooth engaged with the second gear, the top of the support plate is provided with a support ring, the bottom of the mounting seat is provided with a convex ring capable of being sleeved to the outside of the support ring, the second gear is rotatably sleeved on the outer wall of the convex ring.

16. The portable fan of claim 1, wherein, The fan head comprises a shell, an air inlet shell, an air outlet shell, and a fan assembly arranged in the shell, the shell is a cylindrical structure with both ends open, the two ends of the shell are an air inlet end and an air outlet end respectively, the air inlet shell is arranged at the air inlet end of the shell, the air inlet shell is provided with an air inlet channel, the air outlet shell is arranged at the air outlet end of the shell, the air outlet shell is provided with an air outlet channel, the fan assembly comprises a fan blade and a motor assembly for driving the fan blade to rotate, the motor assembly is arranged on one side of the air outlet shell facing the air inlet end of the shell and connected with the fan blade, the fan blade comprises a hub and a plurality of blades, the plurality of blades are fixedly arranged on the outer sidewall of the hub in a uniform interval along the circumference of the hub; the shell is provided with a flow guide channel with a gradually decreasing radial cross-sectional area from the air inlet end of the shell to the air outlet end of the shell, air enters the shell from the air inlet channel of the air inlet shell and is discharged in sequence through the flow guide channel and the air outlet channel.

17. The portable fan of claim 16, wherein, The fan head further comprises a filter, the air inlet shell is detachably connected to the air inlet end of the shell, the air inlet shell is a cylindrical structure with one end open, the filter is arranged in a cylindrical structure and coaxially installed in the interior of the air inlet shell, and the air inlet channel is a plurality of air inlet holes arranged on the sidewall of the air inlet shell.

18. The portable fan of claim 16, wherein, The air inlet shell is arranged in a cylindrical structure with both ends open, one end of the air inlet shell is connected with the air inlet end of the shell, the other end of the air inlet shell is provided with an air inlet baffle, the air inlet baffle is coaxially arranged with the air inlet shell, a plurality of gratings are uniformly arranged between the air inlet baffle and the air inlet shell along the circumference of the air inlet shell, the air inlet baffle is a flat plate structure arranged radially along the air inlet shell or a concave structure recessed towards the interior of the air inlet shell or a convex structure protruding towards the exterior of the air inlet shell, a plurality of air inlet openings are uniformly distributed on the air inlet baffle, and the interval between the plurality of air inlet openings and the adjacent two gratings forms the air inlet channel of the air inlet shell.

19. The portable fan of claim 16, wherein, The air outlet shell comprises a first outer cylinder portion, a first inner cylinder portion, and a plurality of first connecting plates, the first inner cylinder portion is located on the inner side of the first outer cylinder portion, the plurality of first connecting plates are arranged between the first outer cylinder portion and the first inner cylinder portion in a uniform interval along the circumference of the first inner cylinder portion, and the interval between the adjacent two first connecting plates forms the air outlet channel; a first cover is arranged on one side of the first inner cylinder portion facing the air outlet end of the shell, the front surface of the first cover is arranged as a plane or a concave surface recessed towards the rear or a convex surface protruding towards the front; a mounting partition is arranged in the first inner cylinder portion, a light assembly is arranged between one side of the mounting partition facing the air outlet end of the shell and the first cover, and a light-transmitting member is arranged between the connection between the first cover and the first inner cylinder portion.

20. The portable fan of any one of claims 1-19, wherein, The fixed holder is detachably connected to the bottom of the base through a press buckle structure and a butt joint structure, the press buckle structure can be buckled with the butt joint structure; the press buckle structure is arranged on one of the base and the fixed holder, and the other of the base and the fixed holder is provided with the butt joint structure; the press buckle structure comprises a movable press buckle and a first elastic member capable of driving the press buckle to reset, the press buckle comprises a main body part, a press part and a buckle part, the main body part is arranged in the inside of the base, the press part is arranged on the main body part, at least part of the press part extends outside the base for press operation; the buckle part is fixedly arranged at the bottom of the main body part, and the bottom of the base is provided with an opening for the buckle part to extend out; the buckle part is in the shape of "L", and the butt joint structure is provided as a buckling groove, a buckling port or a buckling block capable of being buckled and fixed with the buckle part.

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