Portable fan

Abstract

Disclosed in the present application is a portable fan. The portable fan comprises a holding portion; an air blowing portion, which is connected to one end of the holding portion, and is provided with an air inlet and an air outlet; and a fan module, which is arranged in the air blowing portion and is used for pushing an airflow to flow from the air inlet to the air outlet, wherein a first end portion and a second end portion opposite the first end portion are distributed on the holding portion in a direction from the air inlet to the air outlet; and the fan module is arranged in a space defined by extension lines of the first end portion and the second end portion towards the air blowing portion. Such a construction mode enables the centers of gravity of the fan module and the holding portion to keep consistent, so that the portable fan has higher stability when being placed.

Description

A portable fan Technical Field

[0001] The utility model belongs to the technical field of fans, and in particular relates to a portable fan. Background Art

[0002] A fan is an electrical appliance that uses an electric motor to rotate blades, accelerating air circulation. Fans are primarily used to cool down and circulate air. Handheld fans are portable, making them easy to carry and use. Currently, existing handheld fans typically have a fixed connection between the handle and the air delivery unit, making installation complex and maintenance inconvenient.

[0003] A fan is an electrical appliance that uses an electric motor to rotate blades, accelerating air circulation. Fans are primarily used to cool down and circulate air. Handheld fans are portable, making them convenient to carry and use. Currently, existing handheld fans lack functionality in fan technology. In low-light environments, when users need light for reading or other tasks, they cannot meet their lighting needs.

[0004] A fan is an electrical appliance that uses an electric motor to rotate blades, accelerating air circulation. Fans are primarily used to cool down and circulate air. Handheld fans are portable, making them easy to carry and use. Currently, in fan technology, a motor typically drives the fan blades, which in turn push the air through the air. However, during operation, the motor generates vibrations, making it difficult to operate stably and producing considerable noise.

[0005] In the hot summer, fans have become a must-have item for people to eliminate the heat. With people's demand for convenient use, lighter and more portable fans are becoming more and more popular.

[0006] In order to increase the air volume and facilitate portability, portable fans in the prior art are usually manufactured with a relatively wide blowing structure and a relatively slender handle structure. This structure causes the center of gravity of the fan to be unstable when placed, which in turn causes the fan to fall over easily.

[0007] As an emerging product, handheld fans are popular among consumers because they can generate natural and continuous cool breeze, are easy to carry, and have a simple and beautiful appearance. Especially in some places with hot weather, people often carry handheld fans with them so that they can fan themselves to cool down anytime and anywhere.

[0008] There are many types of handheld fans currently on the market that can meet people's basic needs. However, most of the existing handheld fans have small battery capacities and cannot meet people's demand for ultra-long battery life when using handheld fans.

[0009] Therefore, it is necessary to provide a new technical solution to solve the above technical problems.

[0010] Utility Model Content

[0011] The technical problem to be solved by the utility model is the technical problem of inconvenient installation and maintenance.

[0012] In order to solve the above technical problems, the utility model provides a handheld fan, which includes: an air supply part, a handheld part and a detachable mechanism, the air supply part includes a accommodating cavity and a first mounting port connected to the accommodating cavity; the detachable mechanism includes at least a supporting end and a limiting end connected to the supporting end, the supporting end passes through the first mounting port and is detachably connected to the handheld part, the limiting end is located in the accommodating cavity, and the projection of the first mounting port on the limiting end along the direction of the supporting end close to the limiting end is located on the limiting end.

[0013] Optionally, the air supply unit includes at least a first shell, the first shell encloses the accommodating cavity, and the first mounting port is provided in the first shell.

[0014] Optionally, the handheld portion includes at least a middle shell, the middle shell is detachably connected to the supporting end, a gap is left between the limiting end and the middle shell, and the first shell is at least partially located in the gap.

[0015] Optionally, the detachable mechanism further includes: a first support member provided on the middle shell, and a support block provided on the limiting end, wherein the support block abuts against the first support member, and the support block is located in the first mounting opening and close to the first shell.

[0016] Optionally, the detachable mechanism further includes: a second support member provided on the middle shell, and the gap is located between the curved surface formed by the first support member and the second support member and the limiting end.

[0017] Optionally, the air supply part also includes: a second shell arranged outside the first shell, the second shell is provided with a second mounting port facing the first mounting port and matching the second support member, the support end passes through the first mounting port and the second mounting port in sequence, and the first mounting port matches the first support member.

[0018] Optionally, the detachable mechanism further includes: a fastener, a limiting groove arranged at the supporting end, and a through hole arranged at the middle shell and facing the limiting groove, and both ends of the fastener are detachably connected to the limiting groove and the through hole respectively.

[0019] Optionally, the handheld part also includes: a handheld shell and a fixing seat, one end of the handheld shell is snap-connected to the middle shell, and the other end of the handheld shell is snap-connected to the fixing seat, and the handheld shell, the fixing seat and the middle shell together form a carrying space for placing the battery assembly.

[0020] According to another aspect of the present invention, the present invention also provides a nozzle for a handheld fan, comprising the handheld fan, and further comprising an air inlet end and an air outlet end, wherein the air inlet end is detachably connected to the air supply part, and the air inlet end is communicated with the accommodating cavity so that the accommodating cavity, the air inlet end and the air outlet end form an exhaust channel.

[0021] Optionally, the air inlet end is tapered to the air outlet end, and the air outlet of the air outlet end is strip-shaped or circular. Beneficial effects:

[0022] 1. The utility model provides a handheld fan, in which the support end of the detachable mechanism passes through the first mounting port located at the air supply part and is detachably connected to the handheld part, the limiting end is located inside the accommodating cavity of the air supply part, and the projection of the first mounting port on the limiting end along the direction of the support end close to the limiting end is located on the limiting end. In this way, when the air supply part and the handheld part of the handheld fan need to be installed, the limiting end of the detachable mechanism is placed inside the accommodating cavity of the air supply part, and the support end passes through the first mounting port and is detachably connected to the handheld part. The limiting end will be stuck by the first mounting port, and the air supply part and the handheld part are connected to each other. When the air supply part and the handheld part of the handheld fan need to be maintained, the support end and the handheld part are separated from each other, and the air supply part or the handheld part can be disassembled. Thereby, the technical effect of convenient disassembly and easy installation and maintenance is achieved.

[0023] 2. The utility model also provides a nozzle for a handheld fan, which is detachably connected to the air inlet end and the air supply part, and the air inlet end and the accommodating chamber are interconnected, so that the accommodating chamber, the air inlet end and the air outlet end form an exhaust channel. The gas entering the accommodating chamber will be discharged through the air inlet end and the air outlet end in turn. During the gas discharge process, the air inlet end and the air outlet end will guide the wind direction so that the gas flows in the specific direction required by the user. And when the air nozzle needs to be replaced or maintained, the air nozzle can be easily disassembled and installed. Thereby achieving the technical effect of changing the flow direction of the gas, making it more convenient for users to operate, and facilitating installation and maintenance.

[0024] The technical problem to be solved by the present invention is the technical problem of being unable to meet the lighting needs of users.

[0025] In order to solve the above technical problems, the present utility model provides a light guide module, which includes: a light-emitting portion and a light guide portion, the light guide portion includes a first light guide segment and a second light guide segment, the first light guide segment is located between the light-emitting portion and the second light guide segment, and the projection of the first light guide segment on the second light guide segment along the direction in which the light-emitting portion approaches the second light guide segment is located on the second light guide segment.

[0026] Optionally, the first light guide segment includes a first entrance surface, a first exit surface and a second exit surface, and the first exit surface and the second exit surface are parallel; the second light guide segment includes a third exit surface, a fourth exit surface and a fifth exit surface, and the extension line of the third exit surface intersects with the extension line of the fourth exit surface.

[0027] Optionally, the first exit surface, the second exit surface, the third exit surface and the fourth exit surface are respectively provided with a frosted layer; and / or the first entry surface and the fifth exit surface are respectively provided with a polishing layer.

[0028] Optionally, a plurality of grooves are provided on the first entry surface, and the distance between two adjacent grooves is equal.

[0029] Optionally, the fifth exit surface includes a first surface, a second surface and a third surface, the height of the first surface is equal to the height of the third surface, and the height of the first surface is greater than the height of the second surface.

[0030] According to another aspect of the present invention, the present invention also provides a handheld fan, which includes the light guide module, an air supply part, a handheld part, and a connecting part connecting the air supply part and the handheld part, and the light guide module is detachably arranged on the connecting part.

[0031] Optionally, a through groove is provided on the connecting portion, and the light guide module is detachably mounted on the through groove; the through groove and the light guide portion are both U-shaped.

[0032] Optionally, the extension direction of the light guide module is the flow direction of the airflow; the first light guide segment is located in the through slot, and the second light guide segment is located outside the through slot.

[0033] Optionally, limiting protrusions are respectively provided at both ends of the first light guide segment.

[0034] Optionally, a first snap-in groove is provided at one end of the first light guide segment and one end of the second light guide segment, and a second snap-in groove is provided at the other end of the first light guide segment and the other end of the second light guide segment, and the first snap-in groove and the second snap-in groove are respectively snap-connected with the connecting part.

[0035] Beneficial effects:

[0036] 1. The present invention provides a light guide module. The first light guide segment in the light guide portion is positioned between the light emitting portion and the second light guide segment. The projection of the first light guide segment onto the second light guide segment along the direction in which the light emitting portion approaches the second light guide segment is positioned on the second light guide segment. In this way, after the outgoing light generated by the light emitting portion is irradiated by the first light guide segment, the outgoing light can be refracted by the second light guide segment and emitted from the light guide module, providing illumination for users in insufficiently illuminated environments. At the same time, the second light guide segment blocks the outgoing light generated by the light emitting portion from directly irradiating the user's eyes, thereby achieving the technical effect of providing illumination for the user and avoiding glare.

[0037] 2. The present invention also provides a handheld fan in which a light guide module is detachably mounted on a connecting portion, which is connected to the air supply portion and the handheld portion, respectively. When a user grasps the handheld portion, the light guide module located on the connecting portion provides illumination for the user. Furthermore, when the light guide module needs to be replaced or maintained, the light guide module can be removed from and reinstalled on the connecting portion, thereby facilitating maintenance and providing more convenient illumination for the user.

[0038] The technical problem to be solved by the utility model is poor running stability and generation of relatively large noise.

[0039] In order to solve the above technical problems, the utility model provides a buffer for a fan module, wherein the buffer comprises a buffer body and an auxiliary buffer provided on the buffer body, wherein the buffer body is arranged outside the fan module.

[0040] Optionally, the auxiliary buffer component includes at least multiple groups of first protrusion groups distributed circumferentially on the outside of the buffer component body, and the multiple groups of first protrusion groups are arranged in the middle section of the buffer component body; the first protrusion group includes multiple protrusions, and the multiple protrusions are distributed at equal intervals.

[0041] Optionally, the auxiliary buffer also includes two groups of second protrusion groups respectively arranged at both ends of the buffer body, multiple groups of first protrusion groups are located between two groups of second protrusion groups, two groups of second protrusion groups are distributed along the circumference of the buffer body, and two groups of second protrusion groups are located outside the buffer body; the second protrusion group includes multiple bosses, and the multiple bosses are distributed at equal intervals.

[0042] Optionally, a length of the second protrusion group along the radial direction of the buffer body is equal to a length of the first protrusion group along the radial direction of the buffer body.

[0043] Optionally, the protrusion is in a truncated cone shape, and the boss is tapered.

[0044] Optionally, the buffer component further includes two limiting components arranged inside the buffer component body, and the two limiting components are respectively located at two ends of the fan module.

[0045] According to another aspect of the present invention, the present invention also provides a fan module, which includes the buffer member of the fan module, and also includes an air guide member and an air inlet bracket, and the buffer member body is located between the air guide member and the air inlet bracket.

[0046] Optionally, the projection of the buffer body along the length extension direction of the buffer body on the air guide is located on the air guide, and the projection of the buffer body along the length extension direction of the buffer body on the air inlet bracket is located on the air inlet bracket.

[0047] Optionally, at least a portion of the air guide extends into the interior of the supporting shell, and at least a portion of the air inlet bracket extends into the interior of the supporting shell.

[0048] According to another aspect of the present invention, the present invention also provides a handheld fan, which includes the fan module and a handheld part with a connecting bracket. A mounting port is provided on the support shell, one end of the connecting bracket extends into the mounting port, and the other end of the connecting bracket is tightly attached to the auxiliary buffer member.

[0049] Beneficial effects:

[0050] 1. The present invention provides a buffer for a fan module. The buffer body is positioned outside the fan module, and an auxiliary buffer is disposed on the buffer body. During operation of the fan module, the auxiliary buffer, located on the buffer body, acts as a vibration dampener. This dampens vibrations generated during operation, improves operational stability, and reduces noise. This achieves the technical effect of simultaneously reducing vibration and noise, thereby improving operational stability.

[0051] 2. The present invention also provides a fan module in which a buffer body is positioned between an air guide and an air inlet bracket. During the shock absorption and cushioning process performed by the auxiliary buffer member disposed on the buffer body, air moves from the air inlet bracket toward the air guide, and the air guide and air inlet bracket clamp the buffer body from both sides. This effectively dampens vibrations generated during operation, reducing noise and improving operational stability.

[0052] 3. The present invention also provides a handheld fan, wherein one end of a connecting bracket in the handheld portion extends into a mounting opening in the support housing, and the other end of the connecting bracket abuts against an auxiliary buffer. When a user grasps the handheld portion, the connecting bracket provides support for the buffer body and the auxiliary buffer. Vibrations of the buffer body and the auxiliary buffer are transmitted to the handheld portion via the connecting bracket, thereby buffering vibrations generated by the fan module during operation, thereby improving operational stability and reducing noise.

[0053] The purpose of the present application is to provide a portable fan capable of buffering and adjusting the displacement of fan blades. An embodiment of the present application provides a portable fan, comprising: a grip; a blowing portion, the blowing portion being connected to one end of the grip, the blowing portion being provided with an air inlet and an air outlet; a fan assembly, the fan assembly being disposed within the blowing portion and configured to propel airflow from the air inlet to the air outlet; the grip having a first end portion and a second end portion opposite to the first end portion along a direction from the air inlet to the air outlet, the fan assembly being disposed within a space defined by an extension line of the first and second ends toward the blowing portion.

[0054] Optionally, the blowing part includes: a connecting cylinder, the outer surface of the connecting cylinder is smooth, the connecting cylinder is connected to one end of the holding part, and the fan assembly is arranged in the connecting cylinder; and / or,

[0055] Along the direction from the air inlet to the air outlet, the ratio of the distance from the first end to the second end to the length of the fan assembly is: 1.05-1.35; and / or,

[0056] A counterweight is provided in the grip portion to keep the portable fan stable when placed; and / or,

[0057] The blowing portion is arranged from the first end portion to the second end portion, and the length of the blowing portion is greater than the distance from the first end portion to the second end portion; and / or,

[0058] The fan assembly includes a three-phase motor.

[0059] Optionally, the blowing part further comprises: an assembly cylinder, the assembly cylinder is arranged in the connecting cylinder, and the fan assembly is arranged in the connecting cylinder; and / or,

[0060] The ratio of the length of the blowing portion to the distance from the first end to the second end is: 1.1-1.5; and / or,

[0061] The distance from the first end to the second end is greater than the thickness of the holding portion in a direction perpendicular to the first end to the second end.

[0062] Optionally, the blowing part further includes: an air inlet tube and an air outlet tube, the air inlet is provided on the air inlet tube, the air outlet is provided on the air outlet tube, and the air inlet tube and the air outlet tube are respectively snap-connected to both ends of the assembly tube.

[0063] Optionally, the surface of the air inlet tube is raised to form a plurality of connecting edges, two adjacent connecting edges are connected by a first connecting elastic piece, a first claw is provided on the side of the first connecting elastic piece facing the connecting tube, and a first buckle that cooperates with the first claw is provided on the surface of one end of the assembly tube connected to the air inlet tube; and / or,

[0064] The surface of the air outlet cylinder facing the connecting cylinder is indented to form a plurality of first slots, and a plurality of first openings are correspondingly opened at one end of the assembly cylinder facing the air outlet cylinder, and a second connecting elastic piece is provided in each of the plurality of first openings, and a second claw that cooperates with the first slot is provided on the side of the second connecting elastic piece facing the fan assembly; and / or,

[0065] The length of the first inner surface of the end of the air inlet tube facing away from the fan assembly is smaller than the length of the first outer surface, and a smooth transition between the first inner surface and the first outer surface forms a first arcuate edge; and / or,

[0066] The length of the second inner surface of the end of the air outlet tube facing away from the fan assembly is smaller than the length of the second outer surface, and the second inner surface and the second outer surface smoothly transition to form a second arc-shaped edge.

[0067] Optionally, the air inlet tube includes: a connecting tube and an air inlet ring, the multiple connecting baffles, the first connecting spring and the first claw are all provided on the connecting tube, the connecting tube is detachably connected to the air inlet ring, the maximum outer diameter of the connecting tube is smaller than the inner diameter of the assembly tube, and the maximum outer diameter of the air inlet ring is larger than the outer diameter of the connecting tube; and / or,

[0068] The outer diameter of one end of the air outlet tube that is clamped and connected to the assembly tube is smaller than the inner diameter of the assembly tube, and the maximum outer diameter of one end of the air outlet tube that faces away from the assembly tube is larger than the outer diameter of the connecting tube.

[0069] Optionally, the plurality of connecting baffles are each provided with connecting screw holes, the air inlet ring is provided with a threaded column at a position corresponding to the connecting screw hole, the connecting screw hole and the threaded column are connected by a first screw, and the end of the assembly tube connected to the air outlet tube is provided with a receiving groove for receiving the first screw, the connecting screw hole and / or the threaded column; and / or,

[0070] A limit stop edge is provided on the inner wall of one end of the assembly tube connected to the air outlet tube, a positioning piece is provided on the end of the air outlet tube connected to the assembly tube, a positioning groove is provided on the limit stop edge at a position corresponding to the positioning piece, and the positioning piece is provided in an extension direction of at least one first card slot among the plurality of first card slots facing the assembly tube; and / or,

[0071] A filter screen is provided between the connecting cylinder and the air inlet ring.

[0072] Optionally, the holding portion includes: a shell, a battery and a connector, the battery is arranged in the shell, one end cover of the connector is arranged at one end of the shell, and the other end of the connector is connected to the blowing portion.

[0073] Optionally, the housing is connected to the connecting member by snapping, and the connecting member is connected to the blowing part by screws; and / or,

[0074] The portable fan further includes: a first PCB circuit board, a second PCB circuit board, and a third PCB circuit board. The first PCB circuit board is arranged in the shell, the second PCB circuit board is arranged on the connecting member, and the third PCB circuit board is arranged on the fan assembly. The first PCB circuit board and the second PCB circuit board are perpendicular to each other. The first PCB circuit board and the second PCB circuit board are connected by a first conductive member, and the second PCB circuit board and the third PCB circuit board are connected by a second conductive member. The stiffness of the first conductive member is greater than the stiffness of the second conductive member.

[0075] Optionally, the first PCB circuit board is fixedly connected to the inner surface of the housing, the second PCB circuit board is fixed to the connecting member by screws, and the third PCB circuit board is fixedly connected to the fan assembly; and / or,

[0076] The first PCB circuit board is connected to the first control button, and the second PCB circuit board is connected to the second control button. The movement path of the first control button after being subjected to force is perpendicular to the first PCB circuit board, and the movement path of the second control button after being subjected to force is parallel to the second PCB circuit board.

[0077] The beneficial effects of the embodiments of the present application are as follows: the fan assembly of the portable fan is arranged in the blowing part, and the fan assembly is confined to be placed in the space of the extension line member of the first end and the second end of the holding part. That is, the length of the fan assembly in the blowing direction is limited to be no greater than the length of the holding part in the blowing direction. This construction method can keep the center of gravity of the fan assembly and the holding part consistent, so that the portable fan has greater stability when placed. Secondly, the portable fan will generate a recoil force during the blowing process. When the center of gravity of the fan assembly and the holding part are inconsistent, the portable fan will turn under the action of the recoil force. Therefore, the relative position relationship between the fan assembly and the holding part in this embodiment can also prevent the portable fan from deflecting when blowing.

[0078] The utility model provides a handheld fan, which is used to solve the problem that the capacitor capacity is small and the battery life cannot be extended when the handheld fan is used.

[0079] In order to solve the above technical problems, the utility model provides a handheld fan, comprising an air supply part and a handheld part, wherein the handheld part comprises a first outer shell and a battery assembly arranged in the first outer shell;

[0080] The battery assembly includes a battery housing and a first storage battery and a second storage battery disposed in the battery housing. The first storage battery and the second storage battery are connected in series via an electrical connector.

[0081] Furthermore, the electrical connector is provided with a circuit board, and the circuit board is electrically connected to an external circuit via a conductive wire;

[0082] The end of the circuit board close to the conductive wire is provided with a first conductive member connected to the positive electrode of the first battery and a second conductive member connected to the negative electrode of the second battery, and the end of the circuit board away from the conductive wire is provided with a third conductive member connected in series with the first battery and the second battery.

[0083] Furthermore, a first insulating sheet is provided at one end of the first battery and the second battery that are connected in series and close to the conductive line, and a second insulating sheet is provided at one end of the first battery and the second battery that are connected in series and away from the conductive line.

[0084] Furthermore, a main control chip is welded on the circuit board, and the main control chip is used to detect the current signal and voltage signal when the battery circuit is charging and discharging.

[0085] Furthermore, the main control chip is also used to balance the current signal and voltage signal of the battery circuit during charging and discharging. The main control chip balances the current signal and voltage signal of the first battery and the second battery by adjusting the resistance value of the internal resistance.

[0086] Furthermore, the air supply unit includes a second outer shell and an air inlet cover and an air nozzle connected to the second outer shell, the air inlet cover is arranged on one side of the air inlet, and the air nozzle is arranged on one side of the air outlet.

[0087] Furthermore, the second outer shell is provided with a second inner shell, an air inlet bracket and an air outlet air guide member clamped to the second inner shell, one end of the air inlet bracket is clamped to the second inner shell, the other end of the air inlet bracket is clamped to the air inlet cover, one end of the air outlet air guide member is clamped to the second inner shell, and the other end of the air outlet air guide member is clamped to the air nozzle.

[0088] Furthermore, an air supply assembly is provided in the second inner shell, and the air supply assembly includes a drive motor and an impeller assembly. The impeller assembly includes a cylindrical cavity and blades wound around the outside of the cylindrical cavity. A motor bearing is provided in the cylindrical cavity, and the motor bearing is sleeved on the outside of the drive motor.

[0089] Furthermore, the air inlet cover includes a filter and a fixing ring clamped to the periphery of the filter, and the shape of the filter is a regular hexagon.

[0090] Furthermore, a base is installed at the end of the handheld part, and the base includes a bottom plate, a side wall structure connected to the edge of the bottom plate, and a base mounting shaft clamped to the side wall structure and the bottom plate, and the side wall structure is provided with a first groove clamped to the base mounting shaft and a second groove clamped to the bottom plate protrusion.

[0091] Compared with the prior art, the handheld fan provided by the present invention increases the battery capacity of the handheld fan by arranging a first battery and a second battery in a battery housing, and the first battery and the second battery are connected in series through an electrical connector, so that the battery life of the handheld fan can be longer when the user uses the handheld fan, bringing a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0092] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0093] FIG1-1 is a schematic diagram of an exploded structure of a handheld fan provided by an embodiment of the present utility model;

[0094] Figure 1-2 is a schematic structural diagram of a handheld fan provided by an embodiment of the present utility model;

[0095] 1-3 are schematic structural diagrams of a first support member and a second support member in a handheld fan provided by an embodiment of the present utility model;

[0096] Figures 1-4 are schematic structural diagrams of a limit end in a handheld fan provided by an embodiment of the present utility model;

[0097] Figures 1-5 are schematic structural diagrams of a support end of a handheld fan provided by an embodiment of the present invention;

[0098] 1-6 are schematic structural diagrams of a nozzle of a handheld fan provided in an embodiment of the present invention.

[0099] FIG2-1 is a schematic structural diagram of a light guide module provided in an embodiment of the present utility model;

[0100] FIG2-2 is a schematic structural diagram of a light-emitting portion in a light guide module provided by an embodiment of the present invention;

[0101] Figure 2-3 is a schematic structural diagram of a handheld fan provided by an embodiment of the present utility model;

[0102] Figures 2-4 are schematic structural diagrams of a connecting portion of a handheld fan provided by an embodiment of the present invention;

[0103] Figures 2-5 are schematic structural diagrams of a handheld portion of a handheld fan provided by an embodiment of the present invention;

[0104] Figures 2-6 are schematic structural diagrams of an air supply unit in a handheld fan provided by an embodiment of the present invention;

[0105] FIG2-7 is a schematic diagram of the cross-sectional structure along the AA direction of FIG6 .

[0106] FIG3-1 is a schematic structural diagram of a buffer component of a fan module provided by an embodiment of the present invention;

[0107] FIG3-2 is a schematic structural diagram of a buffer body in a buffer of a fan module provided by an embodiment of the present invention;

[0108] FIG3-3 is a schematic structural diagram of a limiter in a buffer of a fan module provided by an embodiment of the present invention;

[0109] 3-4 are schematic structural diagrams of an auxiliary buffer member in a buffer member of a fan module provided by an embodiment of the present invention;

[0110] Figures 3-5 are schematic structural diagrams of a fan module provided in an embodiment of the present invention;

[0111] Figures 3-6 are schematic structural diagrams of a handheld fan provided by an embodiment of the present invention;

[0112] Figure 3-7 is a schematic diagram of the cross-sectional structure along the AA direction in Figure 6.

[0113] FIG4-1 is a schematic diagram of the overall structure of a portable fan according to a specific embodiment of the present application;

[0114] FIG4-2 is a schematic diagram of the position structure of the grip portion and the fan assembly according to a specific embodiment of the present application;

[0115] FIG4-3 is an exploded schematic diagram of a fan assembly according to a specific embodiment of the present application;

[0116] FIG4-4 is a schematic diagram of the overall structure of a portable fan according to a specific embodiment of the present application;

[0117] 4-5 are exploded schematic diagrams of an assembly cylinder and a fan assembly according to a specific embodiment of the present application;

[0118] Figures 4-6 are schematic structural diagrams of an assembly cylinder according to a specific embodiment of the present application;

[0119] Figures 4-7 are schematic structural diagrams of a connecting tube according to a specific embodiment of the present application;

[0120] 4-8 are schematic structural diagrams of an air inlet ring according to a specific embodiment of the present application.

[0121] FIG5-1 is a schematic structural diagram of a handheld fan provided by an embodiment of the present utility model;

[0122] FIG5-2 is an exploded schematic diagram of a handheld portion provided by an embodiment of the present invention;

[0123] FIG5-3 is an exploded schematic diagram of a battery assembly provided by an embodiment of the present invention;

[0124] FIG5-4 is a schematic structural diagram of an electrical connector provided by an embodiment of the present utility model;

[0125] Figure 5-5 is a schematic structural diagram of an air supply unit provided by an embodiment of the present utility model;

[0126] Figures 5-6 are exploded schematic diagrams of an air supply unit provided by an embodiment of the present invention;

[0127] Figures 5-7 are schematic structural diagrams of an air supply assembly provided by an embodiment of the present utility model;

[0128] Figures 5-8 are schematic structural diagrams of an air inlet cover provided in an embodiment of the present utility model;

[0129] Figures 5-9 are schematic structural diagrams of a base provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0130] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0131] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0132] In the embodiments of this application, "at least one" refers to one or more; "a plurality" refers to two or more. In the description of this application, the terms "first," "second," "third," etc. are used only for the purpose of distinguishing descriptions and should not be understood as indicating or implying relative importance or order.

[0133] References to "one embodiment" or "some embodiments" described in this specification mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, in this specification, the terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways. It should be noted that in the embodiments of the present application, "and / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0134] It should be pointed out that, in the embodiment of the present invention, when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. At the same time, "connection" in the embodiment of the present application can also be understood as electrical connection, and the connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, A and B are connected, which can be either A and B directly connected, or A and B indirectly connected through one or more other electrical components. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the embodiment of the present invention are for illustrative purposes only and are not intended to limit the present invention.

[0135] Example 1

[0136] A handheld fan provided by an embodiment of the present invention is shown in Figures 1-1 to 1-6. Figure 1-1 is a schematic diagram of the exploded structure of a handheld fan provided by an embodiment of the present invention, Figure 1-2 is a schematic diagram of the structure of a handheld fan provided by an embodiment of the present invention, Figure 1-3 is a schematic diagram of the structure of a first support member 33 and a second support member 34 in a handheld fan provided by an embodiment of the present invention, Figure 1-4 is a schematic diagram of the structure of a limit end 32 in a handheld fan provided by an embodiment of the present invention, Figure 1-5 is a schematic diagram of the structure of a support end 31 in a handheld fan provided by an embodiment of the present invention, and Figure 1-6 is a schematic diagram of the structure of a wind nozzle 4 in a handheld fan provided by an embodiment of the present invention. A handheld fan provided by an embodiment of the present utility model includes an air supply part 1, a handheld part 2 and a detachable mechanism 3. The air supply part 1 includes a accommodating chamber 11 and a first mounting port 12. The first mounting port 12 and the accommodating chamber 11 are connected to each other. The detachable mechanism 3 includes a supporting end 31 and a limiting end 32. The supporting end 31 and the limiting end 32 are connected to each other. The supporting end 31 passes through the first mounting port 12 and is detachably connected to the handheld part 2. The limiting end 32 is located inside the accommodating chamber 11, and the projection of the first mounting port 12 on the limiting end 32 along the direction in which the supporting end 31 approaches the limiting end 32 is located on the limiting end 32.

[0137] The interior of the accommodating cavity 11 has a space for accommodating the limiting end 32. The supporting end 31 connected to the limiting end 32 passes through the first mounting opening 12 and is detachably connected to the handheld portion 2. The limiting end 32 and the supporting end 31 can be integrally formed.

[0138] 1-1 and 1-5 , the direction in which the support end 31 is close to the limit end 32 refers to the vertical direction from the support end 31 toward the limit end 32, and the projection of the first mounting port 12 on the limit end 32 along this direction is located on the limit end 32, so that the cross-section of the first mounting port 12 is smaller than the cross-section of the limit end 32, and the limit end 32 can be stuck at the first mounting port 12.

[0139] In this embodiment, the support end 31 of the detachable mechanism 3 passes through the first mounting opening 12 of the air supply unit 1 and is detachably connected to the handheld unit 2. The limiting end 32 is located within the accommodating chamber 11 of the air supply unit 1, and the projection of the first mounting opening 12 along the direction from the support end 31 to the limiting end 32 is located on the limiting end 32. Thus, when the air supply unit 1 and the handheld unit 2 of the handheld fan need to be installed, the limiting end 32 of the detachable mechanism 3 is placed within the accommodating chamber 11 of the air supply unit 1. The support end 31 passes through the first mounting opening 12 and is detachably connected to the handheld unit 2. The limiting end 32 is then caught by the first mounting opening 12, and the air supply unit 1 and the handheld unit 2 are now connected. When the air supply unit 1 and the handheld unit 2 of the handheld fan need to be maintained, the support end 31 is separated from the handheld unit 2, and the air supply unit 1 or the handheld unit 2 can be disassembled. This achieves the technical effect of convenient disassembly and easy installation and maintenance.

[0140] In one embodiment, the air supply unit 1 may include a first housing 13, and the handheld unit 2 may include a middle housing 21. The first housing 13 encloses the accommodating cavity 11, and the first mounting opening 12 is provided on the first housing 13. The middle housing 21 is detachably connected to the support end 31. That is, the accommodating cavity 11 is the internal space of the first housing 13, and the first mounting opening 12 is located at the bottom of the first housing 13.

[0141] In one embodiment, a gap 25 is provided between the stopper end 32 and the middle shell 21. The gap 25 has space for accommodating a portion of the first shell 13, so that the portion of the first shell 13 is located within the gap 25. For example, the portion of the first shell 13 located around the periphery of the first mounting opening 12 is inserted into the gap 25, so that the first shell 13 is clamped by the stopper end 32 and the middle shell 21.

[0142] In some embodiments, referring to Figures 1-3 to 1-5 , the detachable mechanism 3 further includes a first support member 33, a second support member 34, and a support block 35. The first support member 33 and the second support member 34 are both disposed on the middle shell 21. The first support member 33 surrounds the upper end of the middle shell 21, and the second support member 34 also surrounds the upper end of the middle shell 21. The first support member 33 is located inside the second support member 34. The support block 35 is disposed on a side of the limiting end 32 near the first support member 33. The support block 35 abuts against the first support member 33 and is located inside the first mounting opening 12. The support block 35 abuts against the portion of the first shell 13 located around the edges of the first mounting opening 12, so that the support block 35 limits the first mounting opening 12. The side of the limiting end 32 facing away from the first support member 33 mates with the drive assembly 6 located within the accommodating chamber 11. The surface of the limiting end 32 facing away from the first support member 33 is curved, allowing the surface of the limiting end 32 facing away from the first support member 33 to provide support for the drive assembly 6, which is used to drive gas from the air inlet of the first shell 13 to the air outlet of the first shell 13, causing the gas to flow toward the air nozzle 4. The aforementioned gap 25 is located between the curved surface formed by the first support member 33 and the second support member 34 and the limiting end 32. That is, the curved surface formed by the first support member 33 and the second support member 34 and the limiting end 32 clamp the first shell 13 located within the gap 25.

[0143] In one embodiment, the detachable mechanism 3 further includes a fastener 36, a limiting groove 37, and a through hole 38. The limiting groove 37 is provided in the support end 31, and the through hole 38 is provided in the middle shell 21, with the through hole 38 facing the limiting groove 37. One end of the fastener 36 is detachably connected to the limiting groove 37, and the other end of the fastener 36 is detachably connected to the through hole 38. For example, the fastener 36 includes a threaded rod, one end of which is threadedly connected to the limiting groove 37, and the other end of which is threadedly connected to the through hole 38. By separating one end of the fastener 36 from the limiting groove 37, the middle shell 21 and the support end 31 can be separated from each other.

[0144] As one embodiment, referring to FIG. 1-1 , the air supply unit 1 further includes a second housing 14, which is sleeved onto the exterior of the first housing 13. The second housing 14 is provided with a second mounting opening 15, which faces the first mounting opening 12. The first mounting opening 12 and the first support member 33 match each other, i.e., the size of the first mounting opening 12 matches that of the first support member 33, allowing the first support member 33 to fit snugly into the first mounting opening 12. The second mounting opening 15 and the second support member 34 match each other, i.e., the size of the second mounting opening 15 matches that of the second support member 34, allowing the second support member 34 to fit snugly into the second mounting opening 15. The support end 31 sequentially passes through the first and second mounting openings 12, 15, and is removably connected to the middle shell 21. The second housing 14 protects the first housing 13, while the second mounting opening 15 of the second housing 14 fits tightly against the support end 31, sealing the second mounting opening 15.

[0145] In some embodiments, the handheld portion 2 further includes a handheld shell 22 and a fixing seat 23. One end of the handheld shell 22 is engaged with the middle shell 21, and the other end of the handheld shell 22 is engaged with the fixing seat 23. A carrying space 24 is formed by the handheld shell 22, the fixing seat 23 and the middle shell 21. The interior of the carrying space 24 has space for accommodating the battery assembly 5. By separating the handheld shell 22 from the middle shell 21 and the fixing seat 23, the interior of the carrying space 24 can be conveniently maintained, or a damaged handheld shell 22 can be replaced.

[0146] In some embodiments, a snap joint 26 is provided on the middle shell 21, and a snap groove 27 is provided on the handheld shell 22. The snap groove 27 matches the snap joint 26 so that the snap joint 26 and the snap groove 27 are snapped together, and the handheld shell 22 can be easily disassembled and installed.

[0147] As an embodiment, referring to FIG. 1-1 and FIG. 1-6 , the embodiment of the present invention further provides a nozzle 4 for a handheld fan, comprising the above-mentioned handheld fan, and further comprising an air inlet end 41 and an air outlet end 42, wherein the air inlet end 41 and the air outlet end 42 can be integrally formed. The air inlet end 41 and the air supply portion 1 are detachably connected to each other, such as the second shell 14 in the air supply portion 1 is threadedly connected to the air inlet end 41. Furthermore, the air inlet end 41 is interconnected with the accommodating chamber 11, so that the accommodating chamber 11, the air inlet end 41 and the air outlet end 42 form an exhaust channel 43, and the exhaust channel 43 is used for gas to flow through the accommodating chamber 11, the air inlet end 41 and the air outlet end 42 in sequence, and be discharged from the air outlet 421 of the air outlet end 42.

[0148] In this embodiment, the air inlet end 41 and the air supply unit 1 are detachably connected, and the air inlet end 41 and the accommodating chamber 11 are interconnected, so that the accommodating chamber 11, the air inlet end 41, and the air outlet end 42 form an exhaust channel 43. The gas entering the accommodating chamber 11 is then discharged through the air inlet end 41 and the air outlet end 42 in sequence. During the gas discharge process, the air inlet end 41 and the air outlet end 42 guide the wind direction so that the gas flows in the specific direction required by the user. Moreover, when the air nozzle 4 needs to be replaced or maintained, the air nozzle 4 can be easily removed and installed. This achieves the technical effects of changing the flow direction of the gas, making it more convenient for the user to operate, and facilitating installation and maintenance.

[0149] As an embodiment, the air inlet end 41 and the air outlet end 42 are tapered, and the air outlet 421 of the air outlet end 42 can be strip-shaped, circular, or elliptical. Through the detachable connection between the air inlet end 41 and the air supply unit 1, the air nozzle 4 with a strip-shaped air outlet 421 or the air nozzle 4 with a circular air outlet 421 can be easily replaced to guide the wind direction and achieve the purpose of concentrating or dispersing the wind in the desired direction.

[0150] Example 2

[0151] The present invention provides a light guide module, as shown in Figures 2-1 to 2-7. Figure 2-1 is a schematic structural diagram of the light guide module provided in the embodiment of the present invention. Figure 2-2 is a schematic structural diagram of the light emitting portion 1 in the light guide module provided in the embodiment of the present invention. Figure 2-3 is a schematic structural diagram of a handheld fan provided in the embodiment of the present invention. Figure 2-4 is a schematic structural diagram of the connecting portion 42 in the handheld fan provided in the embodiment of the present invention. Figure 2-5 is a schematic structural diagram of the handheld portion 41 in the handheld fan provided in the embodiment of the present invention. Figure 2-6 is a schematic structural diagram of the air supply portion 4 in the handheld fan provided in the embodiment of the present invention. Figure 2-7 is a schematic cross-sectional structural diagram along the AA direction of Figure 6. The present invention provides a light guide module, which includes a light emitting portion 1 and a light guide portion. The light guide portion includes a first light guide segment 2 and a second light guide segment 3. The first light guide segment 2 is located between the light emitting portion 1 and the second light guide segment 3. The projection of the first light guide segment 2 along the direction of the light emitting portion 1 approaching the second light guide segment 3 is located on the second light guide segment 3.

[0152] The light-emitting unit 1 may include a PCB and a light strip mounted thereon. The light strip includes multiple LEDs. When electrically connected to the PCB, the light strip can emit light. The light generated by the light-emitting unit 1 illuminates the first light guide segment 2. After penetrating the first light guide segment 2, the light enters the second light guide segment 3. The light is then transmitted through the second light guide segment 3 to the outside world, providing illumination for the user.

[0153] Among them, the direction in which the light-emitting portion 1 is close to the second light guide segment 3 refers to the horizontal direction from the light-emitting portion 1 to the second light guide segment 3 as shown in Figures 2-1, 2-6 and 2-7. Since the projection of the first light guide segment 2 on the second light guide segment 3 along the direction in which the light-emitting portion 1 is close to the second light guide segment 3 is located on the second light guide segment 3, at this time, the height of the second light guide segment 3 in the vertical direction can be greater than the height of the first light guide segment 2 in the vertical direction. In this way, the height of the first light guide segment 2 located on the side close to the light-emitting portion 1 will be less than the height of the second light guide segment 3 located on the side away from the light-emitting portion 1, so that the output light generated by the above-mentioned light-emitting portion 1 will not be directly irradiated to the outside world from the inside, which can avoid the output light generated by the light-emitting portion 1 from irritating the user's eyes and improve the user's comfort.

[0154] In this embodiment, the first light guide segment 2 in the light guide portion is located between the light emitting portion 1 and the second light guide segment 3. The projection of the first light guide segment 2 on the second light guide segment 3 along the direction of the light emitting portion 1 approaching the second light guide segment 3 is located on the second light guide segment 3. In this way, after the outgoing light generated by the light emitting portion 1 is irradiated by the first light guide segment 2, the outgoing light can be refracted by the second light guide segment 3 and emitted from the light guide module, providing lighting for users in insufficiently lit environments. At the same time, the second light guide segment 3 will block the outgoing light generated by the light emitting portion 1 from directly irradiating the user's eyes. This achieves the technical effect of providing lighting for the user and avoiding glare.

[0155] As an embodiment, referring to FIG. 2-1 , the first light guide segment 2 includes a first entrance surface 21, a first exit surface 22, and a second exit surface 23. The first exit surface 22 and the second exit surface 23 are parallel to each other, facilitating assembly. The second light guide segment 3 includes a third exit surface 31, a fourth exit surface 32, and a fifth exit surface 33. The extension lines of the third exit surface 31 and the fourth exit surface 32 intersect with each other, meaning that the distance between the third exit surface 31 and the fourth exit surface 32 gradually increases in the direction away from the first light guide segment 2.

[0156] In some embodiments, the first exit surface 22 is frosted to form a frosted layer. The second exit surface 23 is frosted to form a frosted layer. The third exit surface 31 is frosted to form a frosted layer. The fourth exit surface 32 is frosted to form a frosted layer. Providing frosted layers on the first exit surface 22, the second exit surface 23, the third exit surface 31, and the fourth exit surface 32 softens light to prevent irritation to the user's eyes when strong light is present.

[0157] As an embodiment, the first entrance surface 21 is polished to form a polished layer on the surface of the first entrance surface 21. The fifth exit surface 33 is polished to form a polished layer on the surface of the fifth exit surface 33. Since the surfaces of the first entrance surface 21 and the fifth exit surface 33 are polished separately, light can be better transmitted through the first entrance surface 21 and the fifth exit surface 33.

[0158] As an embodiment, referring to FIG. 2-1 and FIG. 2-2 , a groove 211 is provided on the first entry surface 21. The number of grooves 211 can be multiple, and multiple grooves 211 refer to 1 groove 211, 2 grooves 211, 3 grooves 211, 4 grooves 211, 5 grooves 211, etc. The groove 211 is recessed in the direction close to the second light guide segment 3, that is, the groove 211 is recessed from the first light guide segment 2 toward the direction close to the second light guide segment 3. The multiple grooves 211 can be distributed at equal intervals. After the outgoing light generated by the light-emitting portion 1 is absorbed into the groove 211, the concave mirror formed by the groove 211 can diverge the outgoing light generated by the light-emitting portion 1. Similarly, by polishing the surface of the groove 211, a polishing layer is formed on the surface of the groove 211. When the light passes through the groove 211, it will be refracted and scattered on the surface of the groove 211, making the light more dispersed and softer, which can give the user a more comfortable experience. At the same time, multiple grooves 211 surround the outside of the light-emitting part 1, and the surface of each groove 211 faces the light-emitting part 1, so that more light emitted from the light-emitting part 1 enters the groove 211. After more light passes through the groove 211, it is beneficial to improve the brightness of the light for the user.

[0159] In some embodiments, the fifth exit surface 33 includes a first surface 331, a second surface 332, and a third surface 333. The height of the first surface 331 and the third surface 333 are equal, and the height of the first surface 331 is greater than the height of the second surface 332. The equal height of the first surface 331 and the third surface 333 means that, as shown in FIG2-1 , in a direction perpendicular to the first exit surface 22, i.e., in the vertical direction when the first light guide segment 2 and the second light guide segment 3 are horizontally arranged, the height of the first surface 331 and the third surface 333 are equal, and the height of the first surface 331 is greater than the height of the second surface 332. In this case, the height of the third surface 333 is also greater than the height of the second surface 332. This allows the first surface 331 and the third surface 333 located at the edges to transmit more light, while the second surface 332 located in the middle transmits less light, making it easier for users to choose which side needs more light for illumination or which side needs less light for illumination.

[0160] As an embodiment, referring to Figures 2-3 to 2-7 , the present invention also provides a handheld fan, comprising the aforementioned light guide module, an air supply unit 4, a handheld unit 41, and a connecting unit 42. The air supply unit 4 is connected to the handheld unit 41 via the connecting unit 42, and the light guide module is detachably mounted on the connecting unit 42. Since the light guide module is mounted on the connecting unit 42, the situation where light is easily disturbed and has poor stability when mounted on the air supply unit 4 can be avoided; at the same time, the situation where the light is easily blocked when the user holds the handheld unit 41 can be avoided.

[0161] In this embodiment, the light guide module is detachably attached to the connecting portion 42, which is connected to the air supply unit 4 and the handheld portion 41, respectively. When the user grasps the handheld portion 41, the light guide module located on the connecting portion 42 provides illumination. Furthermore, when the light guide module needs to be replaced or maintained, it can be removed from and installed on the connecting portion 42, thereby facilitating maintenance and providing more convenient illumination for the user.

[0162] As an embodiment, a through groove 421 is provided on the connecting part, and the light guide module is detachably mounted on the through groove 421. The overall shape of the through groove 421 is a horizontally placed U-shape, and the overall shape of the light guide part matches the through groove 421 and is also a horizontally placed U-shape, so that the light guide part can be embedded in the through groove 421, and the light guide part is limited by the through groove 421.

[0163] As an embodiment, the overall extension direction of the above-mentioned light guide module is consistent with the flow direction of the airflow, and the flow direction of the airflow refers to the horizontal direction from right to left as shown in Figure 2-6. Since the extension direction of the light guide module is consistent with the flow direction of the airflow, when the light is used during the operation of the fan, the wind generated by the fan blows directly towards the user's body. At this time, the direct direction of the light is opposite to the direction of the wind, which can avoid the glare of direct light. In addition, a through groove 421 is provided around the connecting portion 42, and the interior of the through groove 421 has a space for accommodating the first light guide segment 2. The first light guide segment 2 is arranged inside the through groove 421, and the height of the first light guide segment 2 is lower than the height of the through groove 421, which can facilitate the first light guide segment 2 to extend into the interior of the through groove 421. The second light guide segment 3 is arranged outside the through groove 421, and the height of the second light guide segment 3 is slightly higher than the height of the through groove 421, which can better block the outgoing light generated by the above-mentioned light-emitting portion 1 from being directly emitted from the through groove 421.

[0164] As an embodiment, limiting protrusions 24 are provided at both ends of the first light guide segment 2. The limiting protrusions 24 are used for limiting and fixing. The limiting protrusions 24 are gently sloped in the direction in which the first light guide segment 2 extends toward the end, and align with the protrusions on the through groove 421. During installation, when the two ends of the first light guide segment 2 pass through the protrusions, the protrusions and the elastic deformation of the first light guide segment 2 allow the first light guide segment 2 to pass through the protrusions and be limited in position by the combined action of the protrusions and the limiting protrusions 24, making installation easy while preventing accidental removal.

[0165] In other embodiments, a groove for fixing with screws can be formed on the first light guide segment 2 near one end of the limiting protrusion 24, so that the first light guide segment 2 can be fixed to the connecting portion 42 to limit the two ends of the first light guide segment 2.

[0166] In some embodiments, a first snap-fit ​​groove 25 is provided at one end of the first light guide segment 2 and one end of the second light guide segment 3, and a second snap-fit ​​groove 26 is provided at the other end of the first light guide segment 2 and the other end of the second light guide segment 3. The first snap-fit ​​groove 25 and the second snap-fit ​​groove 26 are respectively snap-fitted to the above-mentioned connecting portion 42.

[0167] In some embodiments, the handheld portion 41 further includes an outer shell and a base. The outer shell is connected to the connecting portion 42, and the base is connected to the outer shell. The base and the connecting portion 42 are respectively arranged at opposite ends of the outer shell. The outer shell, the base, and the connecting portion 42 enclose a mounting cavity for placing a battery assembly. After the battery assembly is placed in the mounting cavity, the battery assembly is connected to the light-emitting portion 1, and the light-emitting portion 1 is powered by the battery assembly. The battery assembly includes a storage battery, etc. By placing the base on a desktop, the base can provide support for the outer shell, the connecting portion 42, the battery assembly, the light-emitting portion 1, the light-guiding portion, and the air supply portion 4. At this time, the light-emitting portion 1 and the light-guiding portion placed upright on the desktop by the base can conveniently provide lighting for the user.

[0168] Example 3

[0169] A buffer component of a fan module provided in an embodiment of the present invention is shown in Figures 3-1 to 3-7. Figure 3-1 is a structural schematic diagram of a buffer component 1 of a fan module provided in an embodiment of the present invention, Figure 3-2 is a structural schematic diagram of a buffer component body 11 in a buffer component of a fan module provided in an embodiment of the present invention, Figure 3-3 is a structural schematic diagram of a limit component 123 in a buffer component of a fan module provided in an embodiment of the present invention, Figure 3-4 is a structural schematic diagram of an auxiliary buffer component 12 in a buffer component of a fan module provided in an embodiment of the present invention, Figure 3-5 is a structural schematic diagram of a fan module 2 provided in an embodiment of the present invention, Figure 3-6 is a structural schematic diagram of a handheld fan provided in an embodiment of the present invention, and Figure 3-7 is a cross-sectional structural schematic diagram along the AA direction in Figure 3-6. A buffer component of a fan module provided by an embodiment of the present invention includes a buffer component body 11 and an auxiliary buffer component 12. The buffer component body 11 is sleeved on the outside of the fan module 2, and the auxiliary buffer component 12 is arranged on the buffer component body 11. The fan module 2 is located inside the buffer component body 11, and the auxiliary buffer component 12 is located outside the buffer component body 11. The auxiliary buffer component 12 is used to be close to the support shell 3, and the auxiliary buffer component 12 protrudes from the buffer component body 11 in the direction close to the support shell 3.

[0170] The interior of the buffer body 11 has a space for accommodating the fan module 2 , and the exterior of the buffer body 11 has a space for accommodating the auxiliary buffer 12 .

[0171] The auxiliary buffer 12 and the buffer body 11 may be made of elastic materials such as silicone.

[0172] In this embodiment, the buffer body 11 is positioned outside the fan module, and the auxiliary buffer 12 is disposed on the buffer body 11. Thus, during operation of the fan module 2, the auxiliary buffer 12, located on the buffer body 11, which is mounted outside the fan module 2, provides vibration damping and cushioning. This dampens the vibrations generated by the fan module 2 during operation, thereby improving operational stability and reducing noise. This achieves the technical effect of simultaneously reducing vibration and noise, thereby improving operational stability.

[0173] As one embodiment, referring to Figures 3-1 to 3-4 , the auxiliary buffer 12 includes at least a plurality of first protrusion groups 121 distributed along the circumferential direction on the exterior of the buffer body 11. The plurality of first protrusion groups 121 are disposed in the middle section 111 of the buffer body 11. The middle section 111 refers to the region between the two ends of the buffer body 11, which has space for accommodating the plurality of first protrusion groups 121. The circumferential distribution of the plurality of first protrusion groups 121 along the buffer body 11 means that, as shown in Figure 3-7 , each first protrusion group 121 on the buffer body 11 is distributed from left to right, and each first protrusion group 121 is circular in shape identical to the outer circumference of the buffer body 11. The multiple groups of first protrusion groups 121 may include 1 group of first protrusion groups 121, 2 groups of first protrusion groups 121, 3 groups of first protrusion groups 121, 4 groups of first protrusion groups 121, etc. The multiple groups of first protrusion groups 121 are distributed at equal intervals along the circumference of the buffer body 11 on the outside of the buffer body 11, that is, the distance between each two connected groups of first protrusion groups 121 on the outside of the buffer body 11 is equal. By arranging multiple groups of first protrusion groups 121 in the middle section 111 of the buffer body 11, the multiple groups of first protrusion groups 121 can effectively buffer the vibration generated in the middle section 111 of the buffer body 11 when the fan module 2 is running.

[0174] In one embodiment, the first protrusion group 121 includes a plurality of protrusions 1211, which are evenly spaced and truncated in a cone shape. The plurality of protrusions 1211 may include one protrusion 1211, two protrusions 1211, three protrusions 1211, four protrusions 1211, and so on. The plurality of protrusions 1211 may be arranged in a ring shape on the exterior of the buffer body 11. The protrusions 1211 are truncated in a cone shape and contact the inner wall of the support shell 3, thereby achieving shock absorption and buffering.

[0175] In some embodiments, the auxiliary buffer 12 further includes two groups of second protrusion groups 122, one group of second protrusion groups 122 is arranged at one end of the buffer body 11, and the other group of second protrusion groups 122 is arranged at the other end of the buffer body 11, and multiple groups of the above-mentioned first protrusion groups 121 are located between the two groups of second protrusion groups 122, that is, the two groups of second protrusion groups 122 are respectively located at the openings at both ends of the buffer body 11. Both groups of second protrusion groups 122 are distributed along the circumference of the buffer body 11, that is, the second protrusion groups 122 are annular. By respectively arranging the second protrusion groups 122 at both ends of the buffer body 11, the second protrusion groups 122 can effectively buffer the vibration generated by the fan module 2 at both ends of the buffer body 11 when the fan module 2 is in operation.

[0176] In one embodiment, the second protrusion group 122 includes a plurality of bosses 1221, which are evenly spaced and tapered. The plurality of bosses 1221 may include one, two, three, or four bosses 1221. The cross-section of the bosses 1221 gradually decreases in a direction away from the buffer body 11. When the bosses 1221 contact the inner wall of the support shell 3, shock absorption and buffering are achieved through the plurality of bosses 1221.

[0177] In some embodiments, the length of the second protrusion group 122 in the radial direction along the buffer body 11 is equal to the length of the first protrusion group 121 in the radial direction along the buffer body 11. At this time, the height of each protrusion 1211 in the first protrusion group 121 is the same, the height of each boss 1221 in the second protrusion group 122 is the same, and the height of the boss 1221 is the same as the height of the protrusion 1211. That is, assuming that in the radial direction of the buffer body 11, the length of the boss 1221 is H1, and the length of the protrusion 1211 is H2, then H1=H2. At this time, the protrusion 1211 and the boss 1221 are in contact with the inner wall of the support shell 3. When the fan module 2 generates vibration during operation and pushes the protrusion 1211 and the boss 1221 close to the inner wall of the support shell 3, the protrusion 1211 and the boss 1221 are constrained by the inner wall of the support shell 3. The deformation degree of the protrusion 1211 and the boss 1221 is the same, and a better shock-absorbing and buffering effect will be achieved.

[0178] As an embodiment, please refer to Figure 3-3, the buffer 1 also includes two limit members 123, the two limit members 123 are arranged inside the buffer body 11, and the two limit members 123 are respectively located at the two ends of the fan module 2, that is, the two limit members 123 limit the fan module 2 from both ends of the fan module 2, so that when the fan module 2 is running, the buffer body 11 is firmly mounted on the fan module 2 to avoid horizontal displacement of the buffer body 11 mounted on the fan module 2.

[0179] As an implementation mode, the embodiment of the present invention further provides a fan module, which includes the above-mentioned buffer member, and also includes an air guide member 4 and an air inlet bracket 5, and the buffer member body 11 is located between the air guide member 4 and the air inlet bracket 5.

[0180] In this embodiment, the buffer body 11 is disposed between the air guide 4 and the air inlet bracket 5. During the shock absorption and cushioning provided by the auxiliary buffer 12 disposed on the buffer body 11, air moves from the air inlet bracket 5 toward the air guide 4. The air guide 4 and the air inlet bracket 5 clamp the buffer body 11 from both sides. This dampens vibrations generated during operation, reduces noise, and improves operational stability.

[0181] In some embodiments, the projection of the buffer body 11 onto the air guide 4 along the length of the buffer body 11 is located on the air guide 4, and the air guide 4 and one end of the buffer body 11 abut against each other. The projection of the buffer body 11 onto the air inlet bracket 5 along the length of the buffer body 11 is located on the air inlet bracket 5, and the air inlet bracket 5 and one end of the buffer body 11 abut against each other. By clamping the ends of the buffer body 11 by the air inlet bracket 5 and the air guide 4, large displacement of the buffer body 11 can be prevented.

[0182] In some embodiments, as shown in Figures 3-5 to 3-7 , at least a portion of the air guide 4 extends into the interior of the support shell 3, and at least a portion of the air inlet bracket 5 extends into the interior of the support shell 3. That is, one end of the support shell 3 is sleeved over a portion of the air guide 4, and the other end of the support shell 3 is sleeved over a portion of the air inlet bracket 5, with the air guide 4 and the air inlet bracket 5 being respectively restrained by the two ends of the support shell 3.

[0183] As an embodiment, the embodiment of the present invention also provides a handheld fan, which includes the above-mentioned fan module and a handheld part 6. A mounting port 31 is provided on the above-mentioned support shell 3, and the mounting port 31 can be located at the bottom of the support shell 3. The handheld part 6 is used for the user to hold. One end of the connecting bracket 61 in the handheld part 6 extends into the interior of the mounting port 31, and the connecting bracket 61 extending into the interior of the mounting port 31 is tightly attached to the above-mentioned auxiliary buffer 12. One end of the connecting bracket 61 extending into the mounting port 31 can be curved to match the buffer body 11, so that this part of the connecting bracket 61 is in close contact with the auxiliary buffer 12.

[0184] In this embodiment, one end of a connecting bracket 61 in the handle 6 extends into the mounting opening 31 in the support shell 3, while the other end of the connecting bracket 61 abuts against the auxiliary buffer 12. When the user grasps the handle 6, the connecting bracket 61 provides support for the buffer body 11 and the auxiliary buffer 12. Vibrations of the buffer body 11 and the auxiliary buffer 12 are transmitted to the handle 6 via the connecting bracket 61, thereby dampening vibrations generated by the fan module during operation, improving operational stability and reducing noise.

[0185] Example 4

[0186] Please refer to Figures 4-1 and 4-2. Figure 4-1 is a schematic diagram of the overall structure of the portable fan of this embodiment; Figure 4-2 is a schematic diagram of the position structure of the handle and fan assembly of this embodiment.

[0187] As shown in Figures 4-1 and 4-2, a portable fan includes: a holding portion 1; a blowing portion 2, which is connected to one end of the holding portion 1 and is provided with an air inlet 21 and an air outlet 22; a fan assembly 3, which is arranged in the blowing portion 2 and is used to push the air flow from the air inlet 21 to the air outlet 22; the holding portion 1 is distributed with a first end 11 along the direction from the air inlet 21 to the air outlet 22, and a second end 12 opposite to the first end 11, and the fan assembly 3 is arranged in a space defined by extension lines L1 and L2 of the first end 11 and the second end 12 toward the blowing portion 2.

[0188] In this embodiment, the grip portion 1 is constructed as a cuboid, and the side edges of the grip portion 1 are smoothly rounded at the joints. However, the overall structure of the grip portion 1 is not limited to this. Depending on the specific application scenario, in some embodiments, the grip portion 1 can be constructed as a cylinder, a polygonal prism, a cube, a cartoon figure, or other shapes (including but not limited to).

[0189] In this embodiment, the blowing portion 2 is configured in a cylindrical shape. However, the configuration of the blowing portion 2 is not limited thereto. Depending on the specific application scenario, in some embodiments, the blowing portion 2 can be configured in (but not limited to) a prism, barrel, polygon, or racetrack shape.

[0190] Please refer to FIG4-3, which is a schematic structural diagram of the fan assembly of this embodiment.

[0191] As shown in FIG4-3 , the fan assembly 3 in this embodiment includes fan blades 32 and a fan motor 31. A connecting ring is provided inside the blowing portion 2 for fixing the fan assembly 3. The fan blades 32 and the fan motor 31 are integrated in a spatial structure reuse manner. However, the structure of the fan blades 32 and the fan motor 31 is not limited to this. In some embodiments, the fan blades 32 and the fan motor 31 can be a split structure, that is, the fan blades 32 and the fan motor 31 are connected only by a rotating shaft.

[0192] In some embodiments, the fan assembly 3 further includes a fan housing 33, within which the fan blades 32 and the fan motor 31 are disposed. The fan housing 33 encapsulates the fan blades 32 and the fan motor 31 into a standardized assembly. In this embodiment, the length of the fan assembly 3 refers to the height of the cylindrical structure of the fan housing 33, or the distance from the top of the fan blades 32 to the rear end of the fan motor 31.

[0193] In some embodiments, the fan assembly 3 further includes a flexible protective cover 34, which is mounted over the fan housing 33 and serves to stabilize the connection between the fan assembly 3 and the blowing unit 2. The flexible protective cover 34 also provides a cushioning effect, reducing vibration and noise of the portable fan. In this embodiment, the length of the fan assembly 3 refers to the height of the cylindrical structure of the flexible protective cover 34.

[0194] In some embodiments, the surface of the flexible protective cover 34 is provided with dot-shaped protrusions 341 or annular protrusions (not shown). In some embodiments, the dot-shaped protrusions 341 and the annular protrusions are arranged alternately. The dot-shaped protrusions 341 and / or the annular protrusions can enhance the cushioning capacity of the flexible protective cover 34, further reducing vibration and noise of the portable fan, while also facilitating assembly of the fan assembly 3 into the blowing unit 2.

[0195] In this embodiment, the first end 11 and the second end 12 actually represent the length of the three attribute parameters of the handle 1. Structurally, the overall length of the fan assembly 3 is no greater than the length of the handle 1; positionally, the fan assembly 3 is positioned within the range defined by the vertical extension of the first end 11 and the second end 12.

[0196] In the above embodiment, the fan assembly 3 of the portable fan is arranged in the blowing part 2, and the fan assembly 3 is limited to be placed in the space of the extension line member of the first end 11 and the second end 12 of the holding part 1. That is, the length of the fan assembly 3 in the blowing direction is limited to be no greater than the length of the holding part 1 in the blowing direction. This construction method can keep the center of gravity of the fan assembly 3 and the holding part 1 consistent, so that the portable fan has greater stability when placed. Secondly, the portable fan will generate a recoil force during the blowing process. When the center of gravity of the fan assembly 3 and the holding part 1 are inconsistent, the portable fan will turn under the action of the recoil force. Therefore, the relative position relationship between the fan assembly 3 and the holding part 1 in this embodiment can also prevent the portable fan from deflecting when blowing.

[0197] Again, when the speed of the fan assembly 3 is high, for example, when the fan motor 31 of the fan assembly 3 is a three-phase motor, the high speed will generate high-frequency vibrations, which will in turn cause the entire portable fan to vibrate, and in certain scenarios may even cause the portable fan to resonate. In this embodiment, the fan assembly 3 is confined between the first end and the second end of the gripping portion 1, so that the high-frequency vibrations generated by the fan assembly 3 cannot be directly transmitted to the gripping portion 1, but are instead transmitted from the fan assembly 3 to the blowing portion 2, and then from the blowing portion 2 to the gripping portion 1. The vibration wave will attenuate during this transmission process, greatly reducing the amplitude and energy of the vibration of the gripping portion 1. When the energy attenuation is large, the conditions for resonance will be broken, the resonance risk of the portable fan will be reduced, and the comfort of use of the portable fan will be improved. The use of a three-phase motor can make the speed of the fan motor 31 higher, the amount of air blown out larger, and the cooling effect more obvious.

[0198] However, the type of motor used by the fan motor 31 is not limited to a three-phase motor. In some embodiments, the fan motor 31 can also use a two-phase motor.

[0199] Please refer to FIG4-4, which is a schematic diagram of the overall structure of the portable fan of this embodiment.

[0200] As shown in FIG. 4-4 , in some embodiments, the blowing portion 2 includes: a connecting tube 23 having a smooth outer surface, the connecting tube 23 being connected to one end of the holding portion 1 , and the fan assembly 3 being disposed in the connecting tube 23 .

[0201] When the fan assembly 3 is in operation, the air near the connecting tube 23 will flow toward the air inlet 21 as negative pressure is formed at the air inlet 21. The smooth outer surface of the connecting tube 23 allows for smoother air flow and prevents the formation of vortices during the flow process, which would affect the air intake of the portable fan. Therefore, the blowing efficiency of the portable fan can be improved.

[0202] The fan assembly 3 is fixed in the connecting tube 23. For example, the fan assembly 3 is fixed by a connecting ring provided in a hollow portion of the connecting tube 23, or the fan assembly 3 is fixed by a connecting rod provided inside the fan assembly 3.

[0203] The connecting tube 23 can be directly connected to the holding portion 1 by means of (but not limited to): screws, gluing, clamping, welding or riveting.

[0204] In some embodiments, the connection between the connecting tube 23 and the grip portion 1 is achieved through a connector 15. One end of the connector 15 is connected to the grip portion 1, and the other end of the connector 15 is connected to the connecting tube 23. The connection between the connecting tube 23 and the connector 15 may be achieved by (but not limited to) screws, adhesive bonding, clamping, welding, or riveting. Whether the connecting tube 23 is directly connected to the grip portion 1 or connected through the connector 15, both connections constitute a connection between the connecting tube 23 and the grip portion 1.

[0205] In some embodiments, along the direction from the air inlet 21 to the air outlet 22, the ratio of the distance from the first end 11 to the second end 12 to the length of the fan assembly 3 is: 1.05-1.35. Within this ratio value, the overall shape and blowing efficiency of the portable fan are optimized. When the ratio of the two is greater than 1.35, the ratio of the fan assembly 3 to the holding portion 1 begins to gradually become unbalanced, and the wind-driving ability of the overly small fan assembly 3 decreases. When the ratio of the two is less than 1.05, the ratio of the fan assembly 3 to the holding portion 1 gradually becomes unbalanced. Since the mass distribution of the fan assembly 3 itself is uneven, when the fan assembly 3 gradually becomes larger, its center of gravity distribution will shift, resulting in insufficient stability of the portable fan. An overly large fan assembly 3 will also cause the entire portable fan to become "top-heavy" and lose its balance ability.

[0206] In some embodiments, a counterweight is provided within the handle 1 to stabilize the portable fan when placed. Typically, the counterweight is provided by a battery 14, but the object is not limited thereto. Depending on the specific application scenario, in some embodiments, a counterweight made of a metal such as lead, copper, or iron, or a compound or mixture of such metals, can be used. The combination of the counterweight and the battery 14 can also serve as the counterweight for the handle 1.

[0207] The provision of the counterweight can further enhance the placement stability of the grip portion 1 and lower the center of gravity of the portable fan, making it less likely to fall over.

[0208] The blowing portion 2 is arranged from the first end 11 to the second end 12, and the length of the blowing portion 2 is greater than the distance from the first end 11 to the second end 12. The fan assembly 3 is arranged in the blowing portion 2, and the length of the blowing portion 2 is greater than the distance from the first end 11 to the second end 12, that is, the length of the blowing portion 2 is greater than the length of the holding portion 1. When the length of the blowing portion 2 is greater than the length of the holding portion 1, the airflow has a certain beam space when entering the blowing portion 2 and when flowing out of the blowing portion 2, which can mix the airflow entering the fan assembly 3 and make it have a uniform flow direction and flow rate; similarly, the airflow flowing out of the blowing portion 2 can also be mixed to make it have a uniform flow direction and flow rate, thereby improving the overall blowing efficiency of the portable fan.

[0209] Furthermore, when the fan assembly 3 is operating, a negative pressure zone forms around the air inlet 21, and a positive pressure zone forms around the air outlet 22. The negative pressure zone at the air inlet 21 causes the surrounding airflow to converge toward the air inlet 21. If the blowing portion 2 is too short, such that the air inlet 21 is flush with or within the grip 1, the grip 1 itself will become an obstruction to the flow of surrounding airflow, causing turbulence or vortices in the flowing air and reducing air intake efficiency. However, when the blowing portion 2 is longer than the grip 1, a gap is created between the air inlet 21 and the grip 1, and the grip 1 no longer obstructs the flow of surrounding air toward the air inlet 21, significantly improving the air intake efficiency of the portable fan. The positive pressure wind zone formed by the air outlet 22 causes the airflow around the air outlet 22 to flow in all directions. If the blowing section 2 is too short, so that the air outlet 22 is flush with or inside the handle 1, the airflow from the air outlet 22 will flow along the handle 1 due to the wall effect, reducing the air outlet efficiency. Alternatively, the airflow from the air outlet 22 may collide with the handle 1 and generate a cyclone, which also reduces the air outlet efficiency. However, when the blowing section 2 is longer than the handle 1, there is a gap between the air outlet 22 and the handle 1, which can prevent the airflow from colliding with the handle 1 or generating the wall effect, greatly improving the air outlet efficiency of the portable fan.

[0210] In some embodiments, the ratio of the length of the blowing portion 2 to the distance from the first end 11 to the second end 12 is: 1.1-1.5. Within this ratio, the air intake and air outlet efficiency of the portable fan reaches the optimal level. When the ratio of the two is greater than 1.5, the proportions of the blowing portion 2 and the holding portion 1 are out of balance. The excessively long air outlet makes the distance from the air inlet 21 to the fan assembly 3 too long, and the air intake mixed flow space is too large. The excessively long air outlet increases the contact area between the airflow and the inner wall space of the blowing portion 2, resulting in large air intake noise. The excessively long air outlet also makes the distance from the fan assembly 3 to the air outlet 22 too long, which also leads to large air outlet noise and low air outlet efficiency. When the ratio of the two is less than 1.1, the excessively short air outlet makes the distance from the air inlet 21 to the fan assembly 3 too short, and the airflow entering therein cannot be well beamed, causing more turbulence in the airflow entering the fan blades 32, affecting the efficiency of the fan blades 32. An excessively short air outlet portion causes the distance between the air outlet 22 and the fan assembly 3 to be too short, thereby causing the airflow blown out of the air outlet 22 to be too dispersed and poorly directional.

[0211] The distance between the first end 11 and the second end 12 is greater than the thickness of the grip 1 in the direction perpendicular to the first end 11 and the second end 12. In other words, from the perspective of "length, width, and height," the grip 1 is longer than its width. This design, combined with the barrel-shaped blower 2, creates a more harmonious overall appearance for the portable fan.

[0212] Please refer to FIG. 4-5 , which is an exploded schematic diagram of the assembly cylinder and the fan assembly of this embodiment.

[0213] As shown in Figures 4-5, in some embodiments, the blowing unit 2 further includes an assembly cylinder 24, which is disposed in the connecting cylinder 23, and the fan assembly 3 is disposed in the connecting cylinder 23. The assembly cylinder 24 is disposed in the connecting cylinder 23, and the assembly cylinder 24 is connected to the fan assembly 3.

[0214] In some embodiments, the assembly tube 24 and the connecting tube 23 are made of different materials. For example, the connecting tube 23 is made of metal, while the assembly tube 24 is made of plastic. The material of the assembly tube 24 is more plastic. Therefore, manufacturing the assembly tube 24 and the connecting tube 23 separately can greatly improve the assembly efficiency and external aesthetics of the portable fan. This ensures that the outer surface of the connecting tube 23 is smooth and easy to grip.

[0215] However, the relationship between the assembly cylinder 24 and the connecting cylinder 23 is not limited to this. Depending on the specific application scenario, the assembly cylinder 24 and the connecting cylinder 23 can be made of the same material through integrated processing and manufacturing technology. In this embodiment, the assembly cylinder 24 and the connecting cylinder 23 should be distinguished based on the function of the overall component, rather than by whether the component is independent.

[0216] Please refer to Figures 4-6 to 4-8. Figure 4-6 is a structural diagram of the assembly cylinder of this embodiment; Figure 4-7 is a structural diagram of the connection cylinder of this embodiment; and Figure 4-8 is a structural diagram of the air inlet ring of this embodiment.

[0217] As shown in Figures 4-6 to 4-8, in some embodiments, the blowing part 2 also includes: an air inlet tube 26 and an air outlet tube 25, the air inlet 21 is opened on the air inlet tube 26, and the air outlet 22 is opened on the air outlet tube 25, and the air inlet tube 26 and the air outlet tube 25 are respectively connected to the two ends of the assembly tube 24 by snap-connection.

[0218] The air inlet tube 26 and the air outlet tube 25 are respectively arranged at both ends of the assembly tube 24, which can clamp the connecting tube 23 to prevent the assembly tube 24 from falling from the connecting tube 23. The air inlet tube 26 and the air outlet tube 25 are fixed by a clamping method, which facilitates the assembly and disassembly of the air inlet tube 26 and the air outlet tube 25.

[0219] The surface of the air inlet duct 26 is raised to form multiple connecting ridges 261a. Two adjacent connecting ridges 261a are connected by a first connecting spring 261b. A first latch 261c is provided on the side of the first connecting spring 261b facing the connecting tube 23. A first latch 241 is provided on the surface of the end of the assembly tube 24 that connects to the air inlet duct 26, which engages with the first latch 261c. The provision of the connecting ridges 261a reduces the overall volume of the air inlet duct 26, requiring less material to manufacture. The space between the two connecting ridges 261a can also be used to position the first latch 261c, allowing the first latch 261c to deform under pressure. This method cleverly utilizes the surface space of the air inlet duct 26, making the connection between the air inlet duct 26 and the assembly tube 24 more ingenious and improving space utilization.

[0220] The surface of the air outlet cylinder 25 facing the connecting cylinder 23 is indented to form a plurality of first slots 251. A plurality of first openings 242 are correspondingly provided on the end of the assembly cylinder 24 facing the air outlet cylinder 25. A second connecting spring 243 is provided in each of the plurality of first openings 242. A second connecting spring 243 is provided on the side facing the fan assembly 3 to cooperate with the first slots 251. Similarly, the connection method between the assembly cylinder 24 and the air outlet cylinder 25 cleverly defines a first opening 242 on the surface of the assembly cylinder 24 and a second connecting spring 243 at the position of the first opening 242. This allows the assembly cylinder 24 to be connected to the air outlet cylinder 25 without providing a protruding structure, rationally utilizing the spatial structure and improving the space utilization rate of the assembly.

[0221] It should be pointed out that the connection method between the air inlet duct 26, the air outlet duct 25 and the assembly tube 24 is not limited to this. Depending on the specific application scenario, the connection method between the air inlet duct 26, the air outlet duct 25 and the assembly tube 24 can be (not limited to): gluing, screw connection, riveting, etc.

[0222] In some embodiments, the assembly cylinder 24 and the air inlet cylinder 26 or the air outlet cylinder 25 can be manufactured using an integrated manufacturing technology.

[0223] In some embodiments, the length of the first inner surface 262b at the end of the air inlet tube 26 facing away from the fan assembly 3 is shorter than the length of the first outer surface 262a, and a smooth transition is formed between the first inner surface 262b and the first outer surface 262a, forming a first curved edge 262c. Specifically, the outward extension of the first inner surface 262b is shorter than the outward extension of the first outer surface 262a. Consequently, a length difference forms between the ends of the first inner surface 262b and the first outer surface 262a. This length difference is connected by the first curved edge 262c, forming a smooth edge at the edge of the air inlet 21 that resembles a "bell mouth." The first curved edge 262c guides the airflow entering the air inlet 21 when air enters. Its smooth lines also prevent the airflow from making abrupt contact with the side edges, thereby improving the air intake efficiency of the portable fan and reducing wind noise.

[0224] In some embodiments, the second inner surface 254 at the end of the air outlet 25 facing away from the fan assembly 3 is shorter than the second outer surface 253, and a smooth transition forms between the second inner surface 254 and the second outer surface 253, forming a second curved edge 255. Specifically, the outward extension of the second inner surface 254 is shorter than the outward extension of the second outer surface 253. Consequently, a length difference forms between the ends of the second inner surface 254 and the second outer surface 253, which is connected by the second curved edge 255, forming a smooth edge resembling a "bell mouth" at the edge of the air outlet 22. The second curved edge 255 guides the outflowing air from the air outlet 22. The curved surface of the second curved edge 255 creates a Coanda effect, rapidly decompressing the high-speed airflow and increasing the airflow area in the blowing direction. The smooth curve of the second curved edge 255 also prevents abrupt contact between the airflow and the side edges, thereby improving the airflow efficiency of the portable fan, increasing the blowing area, and reducing wind noise.

[0225] In some embodiments, the air inlet duct 26 includes a connecting tube 261 and an air inlet ring 262. A plurality of connecting baffles 261a, a first connecting spring piece 261b, and a first latch 261c are provided on the connecting tube 261. The connecting tube 261 and the air inlet ring 262 are detachably connected. The maximum outer diameter of the connecting tube 261 is smaller than the inner diameter of the assembly tube 24, and the maximum outer diameter of the air inlet ring 262 is larger than the outer diameter of the connecting tube 23. The air inlet duct 26 can be disassembled into the connecting tube 261 and the air inlet ring 262. Although the assembly process is increased, the disassembled structure provides more adjustable space for the connection between the assembly tube 24 and the air inlet duct 26, providing greater fault tolerance during assembly.

[0226] In this embodiment, the first inner surface 262 b and the first outer surface 262 a are both provided on the air inlet ring 262 , and the first arcuate edge 262 c is also provided on the air inlet ring 262 .

[0227] Multiple connecting ribs 261a are provided with connecting screw holes 261d. The air inlet ring 262 is provided with threaded posts 262d at positions corresponding to the connecting screw holes 261d. The connecting screw holes 261d and the threaded posts 262d are connected by a first screw. A receiving groove 245 for receiving the first screw, the connecting screw holes 261d, and / or the threaded posts 262d is provided at one end of the assembly tube 24 connected to the air outlet tube 25. The receiving groove 245 can accommodate one or more of the first screw, the connecting screw holes 261d, or the threaded posts 262d. The screw connection allows for adjustment of the connection between the assembly tube 24 and the air inlet tube 26, providing greater fault tolerance during assembly. The connecting screw holes 261d are provided on the connecting rib 261a. Through the rational use of space, two connection methods are provided between the connecting rib 261a and the adjacent connecting rib 261a, thereby improving space utilization efficiency. The provision of the receiving groove 245 can prevent the first screw from protruding from the surface of the assembly tube 24 , thereby facilitating assembly.

[0228] The detachable connection method between the connecting tube 261 and the air inlet ring 262 is not limited thereto. Depending on the specific application scenario, in some embodiments, the connecting tube 261 and the air inlet ring 262 can also be connected by snapping.

[0229] In some embodiments, the connecting tube 261 and the air inlet ring 262 can be manufactured by an integrated molding process.

[0230] The outer diameter of one end of the air outlet tube 25 connected to the assembly tube 24 is smaller than the inner diameter of the assembly tube 24 , and the maximum outer diameter of the end of the air outlet tube 25 facing away from the assembly tube 24 is larger than the outer diameter of the connecting tube 23 .

[0231] The outer diameters of the ends of the air outlet tube 25 and the connecting tube 261 connected to the assembly tube 24 are smaller than the inner diameter of the assembly tube 24, allowing the ends of the air outlet tube 25 and the connecting tube 261 connected to the assembly tube 24 to be inserted into the assembly tube 24. The maximum outer diameter of the end of the air outlet tube 25 facing away from the assembly tube 24 and the air inlet ring 262 are larger than the outer diameter of the connecting tube 23, which can clamp and limit the connection tube 23, preventing the assembly tube 24 and the connecting tube 23 from separating or shifting.

[0232] In some embodiments, a limit stop 246 is provided on the inner wall of the end of the assembly tube 24 where it connects to the air outlet tube 25. A positioning piece 252 is provided on the end of the air outlet tube 25 where it connects to the assembly tube 24. The limit stop 246 has a positioning slot 247 formed at a position corresponding to the positioning slot 252. The positioning piece 252 is provided in the direction in which at least one of the plurality of first slots 251 extends toward the assembly tube 24. The provision of the positioning piece 252 and the positioning slot 247 facilitates the snap-fit ​​assembly of the air outlet tube 25 and the assembly tube 24. Furthermore, the provision of the positioning piece 252 in the direction in which the first slot 251 extends toward the assembly tube 24 further facilitates the assembly of the first slot 251, the second connecting spring piece 243, and the second claw 244.

[0233] In some embodiments, a filter 27 is disposed between the connecting tube 23 and the air inlet ring 262. The filter 27 prevents debris, hair, or clothing from being drawn into the fan assembly 3, providing excellent protection. Placing the filter 27 between the connecting tube 23 and the air inlet ring 262 facilitates installation and replacement.

[0234] In some embodiments, the holding portion 1 includes: a shell 13, a battery 14 and a connector 15, the battery 14 is disposed in the shell 13, one end cover of the connector 15 is disposed at one end of the shell 13, and the other end is connected to the blowing portion 2.

[0235] The connection between the blowing section 2 and the gripping section 1 is achieved through the connector 15, making them independent of each other and facilitating the disassembly and maintenance of either one. Furthermore, since both the blowing section 2 and the gripping section 1 have established functional shapes, their specific shapes make them difficult to connect and secure. Therefore, the connector 15 is used to connect the two. The connector 15 can adaptably deform and dock according to the different shape requirements of the blowing section 2 and the gripping section 1, thereby improving the stability of the connection. For example, the end of the connector 15 connected to the blowing section 2 is provided with an arcuate groove, and the end of the connector 15 connected to the gripping section 1 is constructed to have a shape similar to the outer shape of the gripping section 1.

[0236] In some embodiments, the connector 15 is connected to the blowing unit 2 by screws, and the connector 15 is connected to the housing 13 by snap-fitting. However, the connection method between the connector 15 and the blowing unit 2 is not limited to this. Depending on the specific application scenario, in some embodiments, the connector 15 and the blowing unit 2 can be connected and fixed by (but not limited to) gluing, snap-fitting, riveting, welding, etc. The connector 15 and the housing 13 can be connected and fixed by (but not limited to) interference fit, screw connection, riveting, gluing, welding, etc.

[0237] The portable fan also includes: a first PCB circuit board 41, a second PCB circuit board 42 and a third PCB circuit board 43. The first PCB circuit board 41 is arranged in the housing 13, the second PCB circuit board 42 is arranged on the connecting member 15, and the third PCB circuit board 43 is arranged on the fan assembly 3. The first PCB circuit board 41 and the second PCB circuit board 42 are perpendicular to each other. The first PCB circuit board 41 and the second PCB circuit board 42 are connected by a first conductive member 46, and the second PCB circuit board 42 and the third PCB circuit board 43 are connected by a second conductive member 47. The stiffness of the first conductive member 46 is greater than or equal to the stiffness of the second conductive member 47.

[0238] The first PCB 41, second PCB 42, and third PCB 43 are positioned at different locations on the portable fan. This not only increases the mounting area for the various electronic components of the portable fan, but also effectively avoids the high electromagnetic interference caused by densely packed electronic components, effectively reducing the intensity of electronic interference between different PCBs. Furthermore, the different locations of the PCBs prevent excessive heat generation from the electronic components, thereby improving the heat dissipation efficiency of the portable fan.

[0239] The first conductive member 46 has a greater rigidity than the second conductive member 47, providing greater support for the second PCB 42 against the first PCB 41. Combined with the perpendicular arrangement of the first and second PCBs 41, the second PCB 42 supports the first PCB 41, preventing the first PCB 41 from moving into the housing 13 under external forces. The lower rigidity of the second conductive member 47 facilitates installation of the blower unit 2 and the connector 15.

[0240] In some embodiments, the first conductive member 46 is a motor component pin or a welded prismatic iron metal rod, and the second conductive member 47 is a wire, a flat cable, or a flexible circuit board.

[0241] The first PCB 41 is snap-fastened to the inner surface of the housing 13, the second PCB 42 is screwed to the connector 15, and the third PCB 43 is snap-fastened to the fan assembly 3. The snap-fastening connection of the first PCB 41 facilitates assembly and disassembly. The second PCB 42 is screwed to the connector 15. Since the second PCB 42 supports the first PCB 41, the more stable the second PCB 42 is installed, the greater the degree of positioning or support it provides for the first PCB 41. The third PCB 43 is snap-fastened to the fan assembly 3, facilitating assembly and disassembly and serving as a dust cover for the fan assembly 3.

[0242] In some embodiments, a first PCB 41 is connected to a first control button 44, and a second PCB 42 is connected to a second control button 45. The path of motion of the first control button 44 under load is perpendicular to the first PCB 41, while the path of motion of the second control button 45 under load is parallel to the second PCB 42. Because the first PCB 41 is secured by a snap-fit ​​connection and the second PCB 42 supports the first PCB 41, the first PCB 41 has a higher vertical load resistance, making it suitable for mounting the first control button 44, which moves in the vertical direction. The second PCB 42, however, is secured to the connector 15 by screws, resulting in a larger overhang area and weaker vertical load resistance. However, due to the screw fastening, it has greater anti-rotational properties. The path of motion of the second control button 45 under load is parallel to the second PCB 42, effectively resisting steering or deflection forces applied to the second control button 45 during use.

[0243] Example 5

[0244] In order to solve the problem of small capacitance and inability to last very long when using a handheld fan, the present invention provides a handheld fan. Please refer to Figure 5-1, which is a structural schematic diagram of a handheld fan provided in an embodiment of the present invention. The handheld fan includes an air supply unit 10 and a handheld unit 20. Please refer to Figure 5-2, which is an exploded schematic diagram of a handheld unit provided in an embodiment of the present invention. The handheld unit 20 includes a first outer shell 21 and a battery assembly 22 disposed in the first outer shell. Please refer to Figure 5-3, which is an exploded schematic diagram of a battery assembly provided in an embodiment of the present invention. The battery assembly 22 includes a battery housing 221 and a first battery 222 and a second battery 223 disposed in the battery housing 221. The first battery 222 and the second battery 223 are connected in series via an electrical connector 224.

[0245] Specifically, in the embodiment of the utility model, the first battery 222 and the second battery 223 in the battery housing 221 are connected in series through the electrical connector 224. Compared with using a single battery to power the handheld fan, the battery capacity is doubled, so that when the user uses the handheld fan, the battery life can be longer, bringing a better user experience.

[0246] Further, please refer to Figure 5-4, which is a structural schematic diagram of an electrical connector provided in an embodiment of the utility model. A circuit board 2241 is provided on the electrical connector 224, and the circuit board 2241 is electrically connected to the external circuit through a conductive wire 2242. The circuit board 2241 is electrically connected to the external circuit through a conductive wire 2242, and the external circuit charges the handheld fan to meet the requirement that the battery assembly in the handheld fan can be reused.

[0247] The end of the circuit board 2241 close to the conductive line 2242 is provided with a first conductive member 2243 connected to the positive pole of the first battery and a second conductive member 2244 connected to the negative pole of the second battery. The end of the circuit board 2241 away from the conductive line 2242 is provided with a third conductive member 2245 connected in series with the first battery 222 and the second battery 223. In the embodiment of the present invention, the two batteries connected in series receive electrical energy from an external circuit and convert it into chemical energy of the battery. After the energy of the battery is consumed by discharge, it is restored by charging and can be discharged again, forming a charge and discharge cycle. The use of two batteries connected in series to receive electrical energy from the external circuit provides double the battery capacity, so that the handheld fan can have a longer battery life and is more suitable for carrying outside.

[0248] Furthermore, after the first battery 222 and the second battery 223 are connected in series, a first insulating sheet 225 is provided at one end close to the conductive wire 2242, and after the first battery 222 and the second battery 223 are connected in series, a second insulating sheet 226 is provided at one end away from the conductive wire 2242. In this embodiment of the utility model, insulating sheets are provided at both ends of the batteries after they are connected in series, which can ensure insulation between the positive and negative electrodes of the batteries and prevent short circuits between the positive and negative electrodes of the batteries.

[0249] Furthermore, a main control chip 2246 is welded on the circuit board 2241. The main control chip 2246 is used to detect the current signal and voltage signal during the charging and discharging of the battery circuit, and to perform overvoltage and overcurrent protection on the circuit during the charging and discharging of the battery. In the embodiment of the utility model, the main control chip detects the current signal and voltage signal input from the external power supply to the battery circuit in real time to prevent the external circuit from inputting an excessively high voltage signal. If the voltage on the output terminal of the external power supply exceeds the preset voltage of the handheld fan, the main control chip can control the conductive wire on the circuit board to disconnect, thereby cutting off the charging and discharging of the handheld fan and the external power supply.

[0250] Furthermore, the main control chip 2246 is also used to balance the current signal and voltage signal of the battery circuit during charging and discharging. The main control chip 2246 balances the current signal and voltage signal of the first battery 222 and the second battery 223 by adjusting the resistance value of the internal resistance. In the embodiment of the utility model, the main control chip is also used to balance the current signal and voltage signal of the battery circuit during charging and discharging. When the battery assembly contains more than two batteries, the current signal output by each battery may be different during the use of the handheld fan, which may cause the overall working efficiency of the handheld fan to be reduced and the life of the handheld fan to be shortened. If each battery can share the load evenly, the life of the battery assembly will be extended.

[0251] Further, please refer to Figure 5-5, which is a structural schematic diagram of an air supply unit provided in an embodiment of the utility model. The air supply unit 10 includes a second outer shell 11 and an air inlet cover 12 and an air nozzle 13 that are clamped to the second outer shell 11. The air inlet cover 12 is arranged on one side of the air inlet, and the air nozzle 13 is arranged on one side of the air outlet. In the embodiment of the utility model, the air nozzle 13, the outer shell 11 and the air inlet cover 12 in the air supply unit 10 are arranged to be detachably connected, and disassembly is relatively simple, which facilitates timely cleaning of components such as the air nozzle 13, the outer shell 11 and the air inlet cover 12.

[0252] Further, please refer to Figures 5-6, which are exploded schematic diagrams of an air supply unit provided in an embodiment of the present invention. A second inner shell 14, an air inlet bracket 15 and an air outlet air guide 16 that are clamped to the second inner shell 14 are provided in the second outer shell 11. One end of the air inlet bracket 15 is clamped to the second inner shell 14, and the other end of the air inlet bracket 15 is clamped to the air inlet cover 12. One end of the air outlet air guide 16 is clamped to the second inner shell 14, and the other end of the air outlet air guide 16 is clamped to the air nozzle 13. In the embodiment of the present invention, an air nozzle 13 is provided at the air outlet of the handheld fan, which can be used to clean dust on items such as keyboards around you, and can also properly guide the wind in the air duct in the air supply component, so that the air outlet of the handheld fan is more uniform, thereby having a higher air outlet efficiency and making the air outlet smoother.

[0253] Further, please refer to Figures 5-7, which are structural schematic diagrams of an air supply assembly provided in an embodiment of the present utility model. An air supply assembly 17 is provided in the second inner shell 14. The air supply assembly 17 includes a drive motor 171 and an impeller assembly 172. The impeller assembly 172 includes a cylindrical cavity 1721 and blades 1722 wound around the outside of the cylindrical cavity 1721. A motor bearing 173 is provided in the cylindrical cavity 1721, and the motor bearing 173 is sleeved on the outside of the drive motor 171.

[0254] Specifically, in the embodiment of the present invention, when the user uses the handheld fan, the blades 1722 rotate under the drive of the drive motor 171, guiding the wind from the air inlet cover 12 into the air duct space of the air supply assembly 17. The user can hold the handheld fan to blow the wind to the part that needs to be cooled, thereby achieving the purpose of rapid cooling and improving human comfort.

[0255] Further, please refer to Figures 5-8, which are schematic structural diagrams of an air inlet hood provided in an embodiment of the present invention. The air inlet hood 12 includes a filter 121 and a fixing ring 122 clamped to the periphery of the filter 121. The filter 121 is in the shape of a regular hexagon. In the embodiment of the present invention, a filter 121 is provided in the air inlet hood 12. The filter 121 is a metal filter, and the shape of the metal filter is a regular hexagon. Setting the shape of the metal filter to a regular hexagon can ensure that the air inlet area of ​​the air inlet hood can be maximized under the same filter area.

[0256] Further, please refer to Figures 5-9, which are schematic structural diagrams of a base provided in an embodiment of the present invention. A base 30 is installed at the end of the handheld part 20, and the base 30 includes a bottom plate 31, a side wall structure 32 connected to the edge of the bottom plate 31, and a base mounting shaft 33 engaged with the side wall structure 32 and the bottom plate 31. The side wall structure 32 is provided with a first groove 321 engaged with the base mounting shaft 33 and a second groove 322 engaged with the bottom plate protrusion 311. In the embodiment of the present invention, a base is installed at the end of the handheld part of the handheld fan. When indoors, the handheld fan can also be placed on the desktop, which is more convenient when using the handheld fan.

[0257] The present invention provides a handheld fan comprising an air supply unit and a handheld unit. The handheld unit comprises a first outer shell and a battery assembly disposed within the first outer shell. The battery assembly comprises a battery housing and a first battery and a second battery disposed within the battery housing. The first battery and the second battery are connected in series via an electrical connector. The handheld fan provided by the present invention increases the battery capacity of the handheld fan by providing two batteries connected in series within the battery assembly. This allows the user to enjoy a longer battery life when using the handheld fan, providing a better user experience.

[0258] The term "plurality" in this embodiment refers to a number of two or more.

[0259] It should be noted that any implementation in this embodiment can be implemented independently or in combination with one or more other implementations. When implemented in combination, the combination should not be limited to the combination listed in this embodiment.

[0260] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of this application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments do not serve as additional limitations on the content of this application. The purpose of providing these embodiments is to make the understanding of the disclosure of this application more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the description of the present invention; further, it is obvious to those skilled in the art that improvements or changes can be made based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A portable fan, characterized in that: include: Grip part; A blowing part, the blowing part is connected to one end of the holding part, and the blowing part is provided with an air inlet and an air outlet; A fan assembly, the fan assembly being disposed in the blowing portion and being used to push the air flow from the air inlet to the air outlet; The holding portion is provided with a first end portion and a second end portion opposite to the first end portion along a direction from the air inlet to the air outlet, and the fan assembly is arranged in a space defined by an extension line of the first end portion and the second end portion toward the blowing portion.

2. The portable fan according to claim 1, characterized in that: The blowing part comprises: a connecting tube, the outer surface of which is smooth, the connecting tube is connected to one end of the holding part, and the fan assembly is arranged in the connecting tube; and / or, Along the direction from the air inlet to the air outlet, the ratio of the distance from the first end to the second end to the length of the fan assembly is: 1.05-1.35; and / or, A counterweight is provided in the holding portion so that the portable fan remains stable when placed; and / or, The blowing portion is arranged from the first end to the second end, and the length of the blowing portion is greater than the distance from the first end to the second end; and / or, The fan assembly includes a three-phase motor.

3. The portable fan according to claim 2, characterized in that: The blowing part further includes: an assembly cylinder, the assembly cylinder is arranged in the connecting cylinder, and the fan assembly is arranged in the connecting cylinder; and / or, The ratio of the length of the blowing portion to the distance from the first end to the second end is: 1.1-1.5; and / or, The distance from the first end to the second end is greater than the thickness of the holding portion in a direction perpendicular to the first end to the second end.

4. The portable fan according to claim 3, characterized in that: The blowing part further comprises: an air inlet tube and an air outlet tube, the air inlet is arranged on the air inlet tube, the air outlet is arranged on the air outlet tube, and the air inlet tube and the air outlet tube are respectively connected to the two ends of the assembly tube by snap-fitting.

5. The portable fan according to claim 4, characterized in that: The surface of the air inlet cylinder is raised to form a plurality of connecting baffles, two adjacent connecting baffles are connected by a first connecting spring sheet, a first claw is provided on the side of the first connecting spring sheet facing the connecting cylinder, and a first buckle cooperating with the first claw is provided on the surface of one end of the assembly cylinder connected to the air inlet cylinder; and / or, The surface of the air outlet cylinder facing the connecting cylinder is indented to form a plurality of first slots, and a plurality of first openings are correspondingly opened at one end of the assembly cylinder facing the air outlet cylinder, and a second connecting elastic piece is arranged in each of the plurality of first openings, and a second claw cooperating with the first slot is arranged on the side of the second connecting elastic piece facing the fan assembly; and / or, The length of the first inner surface of the end of the air inlet cylinder facing away from the fan assembly is smaller than the length of the first outer surface, and the first inner surface and the first outer surface smoothly transition to form a first arc-shaped edge; and / or, The length of the second inner surface of the end of the air outlet tube facing away from the fan assembly is smaller than the length of the second outer surface, and the second inner surface and the second outer surface are smoothly transitioned to form a second arc-shaped edge.

6. The portable fan according to claim 5, characterized in that The air inlet cylinder comprises: a connecting cylinder and an air inlet ring, the multiple connecting baffles, the first connecting spring sheet and the first claw are all arranged on the connecting cylinder, the connecting cylinder is detachably connected to the air inlet ring, the maximum outer diameter of the connecting cylinder is smaller than the inner diameter of the assembly cylinder, and the maximum outer diameter of the air inlet ring is larger than the outer diameter of the connecting cylinder; and / or, The outer diameter of one end of the air outlet tube that is clamped and connected to the assembly tube is smaller than the inner diameter of the assembly tube, and the maximum outer diameter of one end of the air outlet tube that faces away from the assembly tube is larger than the outer diameter of the connecting tube.

7. The portable fan according to claim 6, characterized in that The plurality of connection baffles are each provided with connection screw holes, the air inlet ring is provided with a threaded column at a position corresponding to the connection screw hole, the connection screw hole and the threaded column are connected by a first screw, and the end of the assembly tube connected to the air outlet tube is provided with a receiving groove for receiving the first screw, the connection screw hole and / or the threaded column; and / or, A limit stop edge is arranged on the inner wall of one end of the assembly tube connected to the air outlet tube, a positioning piece is arranged on the end of the air outlet tube connected to the assembly tube, a positioning groove is arranged on the limit stop edge at a position corresponding to the positioning piece, and the positioning piece is arranged on the extension direction of at least one first card slot among the plurality of first card slots facing the assembly tube; and / or, A filter screen is arranged between the connecting tube and the air inlet ring.

8. The portable fan according to claim 1, characterized in that The holding part comprises: a shell, a battery and a connecting piece, wherein the battery is arranged in the shell, an end cover of the connecting piece is arranged at one end of the shell, and the other end of the connecting piece is connected to the blowing part.

9. The portable fan according to claim 8, characterized in that The housing is connected to the connecting piece by snapping, and the connecting piece is connected to the blowing part by screws; and / or, The portable fan also includes: a first PCB circuit board, a second PCB circuit board and a third PCB circuit board, the first PCB circuit board is arranged in the shell, the second PCB circuit board is arranged on the connecting member, and the third PCB circuit board is arranged on the fan assembly, the first PCB circuit board and the second PCB circuit board are perpendicular to each other, the first PCB circuit board and the second PCB circuit board are connected by a first conductive member, the second PCB circuit board and the third PCB circuit board are connected by a second conductive member, and the stiffness of the first conductive member is greater than the stiffness of the second conductive member.

10. The portable fan according to claim 8, characterized in that The first PCB circuit board is fixedly connected to the inner surface of the housing, the second PCB circuit board is fixedly connected to the connecting member by screws, and the third PCB circuit board is fixedly connected to the fan assembly; and / or, The first PCB circuit board is connected to the first control button, the second PCB circuit board is connected to the second control button, the movement path of the first control button after being subjected to force is perpendicular to the first PCB circuit board, and the movement path of the second control button after being subjected to force is parallel to the second PCB circuit board.

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