Portable Fan

This application is a Continuation-in-Part of the U.S. application Ser., No. 19/028,278 filed on Jan. 17, 2025, and entitled “PORTABLE FAN” now pending, and claims priority of Chinese patent application CN202520055414.8, filed on Jan. 9, 2025, the entire inventions of which are incorporated herein by reference.

The present disclosure relates to the field of fans, and in particular, to a portable fan and a fan assembly.

A fan is a household appliance that uses a motor to drive a fan blade to rotate to accelerate air circulation. The fan is mainly used for cooling and air circulation, and is widely used in places such as homes, classrooms, offices, shops, hospitals, and hotels. Traditional fans have a large volume and are inconvenient to carry. With the advancement of science, improved fans have smaller and smaller volumes. However, portable fans on the market still have shortcomings. For example, people cannot hold the fans at all times when working outdoors, which means that people cannot use the fans to blow air for cooling while working. Therefore, there is an urgent need for a portable fan on the market, which can free the hands during air blowing for cooling to bring users a more convenient and comfortable experience. Furthermore, how to improve the wind efficiency of fans and enhance portability is also an important topic in the field of fans.

In order to overcome the deficiencies of the prior art, the present disclosure provides a portable fan that can free the user's hands while cooling the user with blown air and is convenient for users to carry. The present disclosure provides a fan assembly with relatively high wind efficiency, with the aim of improving the wind efficiency of the portable fan using the fan assembly.

In the first aspect, the present application provides a portable fan. The portable fan includes a housing body, a fan assembly, a power supply assembly and a first clamping device.

The housing body is provided with an accommodating chamber, an air inlet, and an air outlet; the air outlet, at least part of the accommodating chamber and the air inlet are communicated to each other in sequence along a first preset direction. The fan assembly is located within the accommodating chamber and between the air inlet and the air outlet, and is configured to drive an airflow to flow from the air inlet to the air outlet. The power supply assembly is located within the accommodating chamber, the power supply assembly is offset from a projection of the fan assembly along the first preset direction, and the power supply assembly is electrically connected to the fan assembly to supply power to the fan assembly. The first clamping device is connected to one side of the housing body, and is configured to form a clamping space with the housing body for clamping an external object, so as to fix the portable fan onto the external object.

In one embodiment, the housing body has a first side, a second side, and a third side; the first side and the second side are arranged opposite to each other; the air outlet is arranged on the first side, and the air inlet is arranged on the second side; the third side is located between the first side and the second side and is adjacent to both the first side and the second side; the first clamping device extends along the first preset direction and is connected to the third side of the housing body.

In one embodiment, the housing body further has a fourth side, a fifth side, and a sixth side; the fourth side and the third side are arranged opposite to each other, and the fifth side and the sixth side are arranged opposite to each other; a direction from the fifth side to the sixth side is a second preset direction, and the fan assembly and the power supply assembly are arranged in sequence along the second preset direction.

In one embodiment, the portable fan further includes a second clamping device, the second clamping device is connected to the fourth side of the housing body, and the second clamping device is further configured to form a clamping space with the housing body for clamping an external object, so as to fix the portable fan onto the external object; the first clamping device is connected to one end of the third side of the housing body adjacent to the air outlet, the second clamping device is connected to one end of the fourth side of the housing body adjacent to the air inlet, and the second clamping device extends in a direction opposite to that of the first clamping device.

In one embodiment, a direction from the third side to the fourth side is a third preset direction, and a maximum diameter of the housing body along the second preset direction is greater than a maximum diameter of the housing body along the third preset direction; a first hook is further arranged at one end of the fifth side of the housing body adjacent to the air outlet, and both ends of the first hook are connected to the fifth side of the housing body and form a first hook hole with the housing body; a second hook is further arranged at one end of the sixth side of the housing body adjacent to the air outlet, and both ends of the second hook are connected to the sixth side of the housing body and form a second hook hole with the housing body.

In one embodiment, the fan assembly is provided with at least one first snap-fit member, at least one second snap-fit member is arranged on an inner side of the housing body, and the at least one first snap-fit member cooperates with the at least one second snap-fit member, so that the fan assembly is fixed within the accommodating chamber of the housing body; the number of the at least one first snap-fit member is multiple, the number of the at least one second snap-fit member is also multiple, and multiple first snap-fit members are respectively arranged on both sides of the fan assembly; the first snap-fit member is one of a protrusion and a groove, and the second snap-fit member is the other one of the protrusion and the groove; the protrusion includes a latching hook portion.

In one embodiment, the fan assembly includes a motor, a fan blade and an output shaft; the fan blade is mounted on the output shaft, the fan assembly is an axial flow fan assembly, and the output shaft is arranged along the first preset direction.

In one embodiment, the fan assembly further includes a fan shell, the fan shell includes a shell main body, an air outlet hood, and a grille; the motor and the fan blade are arranged within the shell main body; the air outlet hood is arranged on one side of the shell main body and has a plurality of air outlet holes, and the air outlet hood is also located at the air outlet; the grille is arranged on the other side of the shell main body; the air outlet hood includes a plurality of air outlet blades and an annular wall structure connected to a periphery of the plurality of air outlet blades; the grille includes a plurality of air inlet holes; a plurality of air outlet holes are defined among the plurality of air outlet blades, and the air outlet blades are configured to cooperate with an inner side surface of the annular wall structure to pressurize wind from the shell main body and then blow it out.

In one embodiment, the inner side surface of the annular wall structure is an inclined surface or an arc-shaped surface, so that an inner diameter of the annular wall structure gradually decreases along the first preset direction; the grille is a metal barrier net, the metal barrier net is provided with a plurality of air inlet holes, and an inner diameter of each air inlet hole ranges from 0.5 mm to 4 mm.

In one embodiment, the air inlet hole is in a regular hexagon shape, a surrounding wall is arranged between two adjacent air inlet holes, and a width of the surrounding wall ranges from 0.05 mm to 2 mm.

In one embodiment, the air outlet hood further includes a mounting structure connected to the plurality of air outlet blades; the mounting structure includes an annular mounting wall, a cover plate connected to the annular mounting wall and a first mounting post connected to an inner side of the cover plate, and the first mounting post is configured to be mounted corresponding to a mounting hole of the shell main body; the cover plate is positioned in the middle of the plurality of air outlet holes, an outer surface of the cover plate is provided with a groove, the mounting structure is further provided with a first alignment structure, the shell main body has a second alignment structure, and the first alignment structure and the second alignment structure cooperate to enable an aligned assembly of the shell main body and the air outlet hood.

In one embodiment, the shell main body includes a cylindrical arranged sidewall structure, a mounting part located at one end inside the sidewall structure and an air guide part connected between the mounting part and the sidewall structure, the air guide part includes a plurality of air guide blades arranged at intervals and is configured to guide wind from the fan blade based on a preset direction, the fan blade and the motor are arranged within the sidewall structure on one side of the mounting part, and the motor is mounted on the mounting part; the mounting part is provided with an opening, a conducting wire connected to the motor passes through the opening and then extends from a gap between the shell main body and the air outlet hood to be connected with a control assembly.

In one embodiment, the mounting part is provided with a blind hole arranged facing the motor, an opening of the blind hole faces a side where the motor is located, and the blind hole is configured to store lubricating oil required for a rotation of the output shaft; the mounting part includes a mounting plate and a second mounting post connected to the mounting plate and extending towards the grille, and the blind hole is arranged on the second mounting post; the motor has a motor mounting hole, and the motor mounting hole is sleeved on the second mounting post, thereby the motor is mounted on the second mounting post; a fixing post with a through hole as well as a limiting ring is also arranged within the blind hole, the output shaft passes through the fixing post and the limiting ring, and a limiting part is located at one end of the limiting ring away from the fixing post; the output shaft includes a main body connected to the fan blade and a limiting part connected to the main body; the limiting part includes a rod part and a limiting end connected to one end of the rod part away from the fan blade; a diameter of the limiting end gradually decreases in a direction away from the blade; an outer surface of the rod part, together with the limiting end and the main body, encloses a limiting groove; the limiting ring has a limiting hole, a diameter of the limiting hole is greater than that of the rod part and less than that of the main body and that of the limiting end, so that the limiting ring is limited within the limiting groove.

In one embodiment, the fan shell further includes an air inlet cover, the grille is mounted on an inner side of the air inlet cover, the air inlet cover is arranged on one end of the shell main body away from the air outlet hood, the air inlet cover is in an annular shape, and the air inlet cover is sleeved on one end of the shell main body; an outer side surface of one end of the shell main body can be provided with a stepped groove, the air inlet cover is sleeved on the stepped groove, and an outer side surface of the air inlet cover is smoothly connected with the outer side surface of the shell main body.

In one embodiment, the housing body includes a first portion and a second portion, the first portion and the second portion are arranged in sequence along the second preset direction; a plurality of first clamping members are arranged at an edge of the first portion, and a plurality of second clamping members are arranged at an edge of the second portion; the plurality of first clamping members and the plurality of second clamping members are fastened together to connect the first portion and the second portion.

In one embodiment, the housing body includes a first portion, a second portion, and a mounting shell; the first portion, the mounting shell, and the second portion are arranged in sequence along the second preset direction; a plurality of first clamping members are arranged at an edge of the first portion, and a plurality of second clamping members are arranged at an edge of the second portion; the mounting shell is provided with a plurality of third clamping members that are fastened with the plurality of first clamping members, and a plurality of fourth clamping members that are fastened with the plurality of second clamping members, so that the mounting shell, the first portion and the second portion are connected together.

In one embodiment, an inner side of the housing body is provided with a plurality of air guide plates corresponding to the air inlet, and the plurality of air guide plates are located between the air inlet and the fan assembly; each air guide plate extends along the first preset direction, and the plurality of air guide plates are arranged in sequence along a direction from the third side to the fourth side.

In one embodiment, the housing body includes a housing and a mounting shell located within the housing; the mounting shell includes a partition plate, and the fan assembly and the power supply assembly are respectively positioned on two sides of the partition plate; the first clamping device is connected to the mounting shell and is integrally formed with the mounting shell; the housing is provided with a clamping slot, and a part of the first clamping device connecting to the mounting shell is fixed within the clamping slot.

In one embodiment, the power supply assembly includes a battery; the mounting shell further includes at least one limiting and fixing member connected to the partition plate and extending towards the battery, and the at least one limiting and fixing member is arranged around a periphery of the battery to fix the battery; the portable fan further includes a control assembly, the control assembly is located within the accommodating chamber, and the control assembly includes a control button and a circuit board electrically connected to the control button and the battery; the third side of the housing body is provided with a button hole, and the control button is arranged corresponding to the button hole.

In the second aspect, the present application provides a fan assembly. The fan assembly includes a fan shell, a motor and a fan blade.

The fan blade is connected to the motor.

The fan blade is arranged within the fan shell; the fan shell includes a shell main body, an air outlet hood, and a grille; the air outlet hood is arranged on one side of the shell main body and has a plurality of air outlet holes, the grille is arranged on the other side of the shell main body, and the grille includes a plurality of air inlet holes for reducing wind resistance and increasing air intake volume; the air outlet hood includes a plurality of air outlet blades and an annular wall structure connected to a periphery of the plurality of air outlet blades; a plurality of air outlet holes are defined among the plurality of air outlet blades, and the air outlet blades are configured to cooperate with an inner side surface of the annular wall structure to pressurize wind from the shell main body and then blow it out.

The present disclosure has the following beneficial effects. In the portable fan of the present disclosure, by arranging the power supply assembly to be offset from the projection of the fan assembly along the first preset direction, the fan assembly and the power supply assembly can be arranged side-by-side in the accommodating chamber of the housing body. This makes the position layout of the fan assembly and the power supply assembly in the housing body more reasonable and compact, which is beneficial to the miniaturization of the portable fan and increases its portability. Moreover, the air path formed by the fan assembly can also be offset from the power supply assembly, avoiding the power supply assembly affecting the air-flow efficiency of the fan assembly. As a result, the portable fan has a higher air-flow efficiency, stronger wind power, and better cooling effect.

Referring toto, a portable fan includes a housing, a fan assembly, a power supply assemblyand a mounting shell. The housingis provided with a first air inlet, an air outletand a first air guide chamber, the first air inlet, the first air guide chamberand the air outletare communicated to each other in sequence. The fan assemblyis configured to drive an airflow to flow from the first air inletto the air outlet. The power supply assemblyis electrically connected to the fan assemblyto supply power to the fan assembly. The mounting shellis connected to the housing, the mounting shellincludes a first mounting partand a second mounting part, the first mounting partis integrally formed with the second mounting part, the first mounting partis configured to mount the fan assembly, the second mounting partis configured to mount the power supply assembly. Through the above structure, when a user turns on the fan, with the power support of the power supply assembly, the fan assemblyextracts air from the first air inletand blows the air to a human body through the first air guide chamberand the air outlet. This design is simple and efficient and can improve the air blowing efficiency. Moreover, due to an integrated design of the mounting shellfor mounting the power supply assemblyand the fan assembly, the internal structure of the fan is stable, this greatly reduces the manufacturing cost during manufacturing and production, and achieves mass production of the portable fan, and greatly improve the production efficiency.

In this embodiment, the portable fan further includes a lighting device. The power supply assemblyis electrically connected to the lighting deviceto supply power to the lighting device. Specifically, the lighting deviceincludes an LED lamp, a mounting slotis arranged at an upper end of the mounting shell, the LED lampis located inside the mounting slot. Through the above structure, the portable fan has a lighting function. The user can enjoy both the air blowing function and the lighting function of the fan when working outside at hot summer night. The LED lamp is used for lighting when the user searches for items or in an emergency situation, thereby increasing the multifunctionality of the portable fan and improving the user experience.

In this embodiment, an upper end of the first mounting partis provided with an air outlet hood, the air outlet hoodis connected to an upper end of the housing, the air outlet hoodis provided with a plurality of air outlet holes, the air outlet holesare communicated to the air outlet. Furthermore, the first mounting partis provided with a second air guide chamberand a second air inlet. The second air inlet, the second air guide chamberand the air outlet holesare communicated to each other in sequence. Specifically, the fan assemblyis arranged inside the second air guide chamber, the fan assemblyis configured to drive air to pass through the first air inlet, the first air guide chamber, the second air inlet, the second air guide chamberand the air outlet holesin sequence to form a blowing airflow. Through the above structure, it is effectively achieved that the fan assemblydrives the air to enter from the first air inletof the housingand then the second air inletof the first mounting partthrough the first air guide chamberof the housing, the air is finally blown out of the housingthrough the air outlet holesand the air outletvia the second air guide chamber. This design makes the air inlet and the air outlet in the same direction, greatly improves the air blowing efficiency of the fan, and improves the usability of the portable fan.

In this embodiment, the fan assemblyincludes a motor, a fan bladeand an output shaft, the fan bladesleeves the output shaft. Through the above structure, the motordrives the fan bladeto rotate, the output shaftdrives the fan bladeto extract the air and blow the air to the human body, which effectively achieves the air blowing function of the fan and improves the air blowing efficiency.

In this embodiment, the portable fan further includes an air inlet hood, the air inlet hoodis connected to a lower end of the housing, the air inlet hoodis provided with a plurality of air inlet holes, the air inlet holesare communicated to the first air inlet. Through the above structure, the design of the air inlet hoodis conducive to preventing other debris, such as hairs and paper scraps, from being sucked into the fan, which is conducive to maintaining the safety of the fan.

In this embodiment, a spacer deviceis arranged between the first mounting partand the second mounting part, the spacer deviceis composed of several uniformly distributed partition plates. Through the above structure, due to the arrangement of the several uniformly distributed partition plates, the first mounting partis mounted with the fan assembly, the second mounting partis mounted with the power supply assembly, there is a certain space between the fan assemblyand the power supply assembly, which can prevent heat generated by the battery in the power supply assemblyfrom affecting the fan assemblyand help to prolong the service life of the fan.

In this embodiment, a second mounting partis provided with a mounting chamber. A power supply assemblyincludes a battery. The portable fan further includes a circuit board, the circuit boardis electrically connected to the battery. The circuit boardand the batteryare arranged in a mounting chamber. Through the above structure, the circuit boardand the batteryare arranged in the mounting chamber, it is beneficial to make the structure compact, reduce the mounting space and the production cost, and facilitate the user to carry the portable fan. The second mounting partincludes an arc-shaped partition plateand connecting platesconnected to both sides of the partition plate. The partition plateand the two connecting platesenclose the mounting chamber. A spacer deviceis arranged on the side of the partition plateadjacent to the mounting chamber.

In this embodiment, an upper part of the housingis provided with a clamping slot. The first mounting partis provided with a limiting protrusion. The limiting protrusionpresses against the clamping slot, so that the mounting shelland the housingare connected together. Through the above structure, the first mounting partcan be clamped and sleeved inside the housing, the air outlet hoodcan expose the air outlet, which is convenient for the fan to blow out the air and improves the user experience. In other embodiment, the housingis provided with a limiting protrusion, the first mounting partis provided with a clamping slot, the limiting protrusionpresses against the clamping slot, so that the mounting shelland the housingare assembled into a whole. In other words, the housingis provided with a first fastener portion (such as the clamping slot), the mounting shellis provided with a second fastener portion (such as the limiting protrusion), the limiting protrusionof the first fastener portion and the second fastener portion is located in the clamping slotof the first fastener portion and the second fastener portion, so that the housingand the mounting shellare connected together.

In this embodiment, the housingincludes a front panel, a rear panelopposite to the front panel, and a left paneland a right panelwhich are connected to the front paneland the rear panel. The front panel, the rear panel, the left panel, and the right panelare encircled to form the first air guide chamber.

In this embodiment, the first mounting partis connected to a first clamping device, the first clamping deviceis configured to clamp the portable fan onto clothes of a user. Specifically, the first clamping deviceis a first clip, the first clippresses against the front panelto form a first clamping spacebetween the first clipand the front panel. The first clipcan be a metal or plastic clip. Through the above structure, during use, the user can clamp the fan at the waist of pants or a pocket of clothes through the first clip, so that the fan blows air into the body of the user. Compared to a traditional small handheld fan, the fan with the clip can free the hands. When working, the user can feel the air blown out from the fan without holding the fan, thus achieving a cool experience. This greatly improves the portability and practicality of the product.

In this embodiment, the air inlet hoodis connected to a second clamping device, the second clamping deviceis configured to clamp the portable fan onto clothes of a user. Specifically, the second clamping deviceis a second clip, the second clippresses against the rear panelto form a second clamping spacebetween the second clipand the rear panel. The second clipcan be a metal or plastic clip. Through the above structure, during use, after clamping the portable fan to the waist of pants with the first clip, the user can clamp the second clipto a hem, thereby achieving an effect of stabilizing the fan. When the user needs to do large body movements due to work, the fan can still be firmly fixed at the waist of the pants, which greatly ensures the stability of the fan.

In this embodiment, a surface of the housingis further provided with a first hookand a second hook, a first hook holeis formed between the first hookand the left panel, a second hook holeis formed between the second hookand the right panel. Through the above structure, when it isn't inconvenient for the user to clamp the fan onto the clothes, the user can use a rope to pass through the first hook holeand the second hook hole, and then hang the rope around the neck, so that the fan can be carried without using the hands, increasing the portability of the fan.

In this embodiment, the housingis further provided with an control button, the control buttonis electrically connected to the fan assemblyand the power supply assembly. The air inlet hoodis connected to a button mounting part, the button mounting partis provided with a button mounting hole, the control buttonis located in the button mounting hole. The lower end of the housingis provided with a first mounting port, an inwards protruding button mounting slotand a second mounting port, the button mounting partcan be clamped into the button mounting slot. The first mounting port, the button mounting hole, the button mounting slotand the second mounting portare communicated to each other in sequence. The control buttonis further provided with a fan gear indicator lampand a charging indicator lamp. Through the above structure, the user can press the control buttonto turn on the fan. The fan includes the fan gear indicator lampand the charging indicator lamp. This design is simple and ingenious, making it convenient for users to use.

In this embodiment, the air inlet hoodis provided with a charging interfacefor charging the battery, the charging interfaceincludes a DC charging interface or a Type-C charging interface. Through the above structure, the DC charging interface or the Type-C charging interface can adapt to requirements of different users for charging interfaces, which is convenient for users to charge the fan in a timely manner.

In this embodiment, the mounting shellis connected to the housingthrough a buckle, the air inlet hoodis connected to the housingthrough the buckle. An outer wall of the housingis provided with a plurality of anti-slip convex bars. Through the above structure, the structure of the fan is mounted more stably and firmly through the buckle connection, so that the quality and safety of the product are improved. Furthermore, the outer wall of the housingof the fan is provided with the plurality of anti-slip convex bars, so that a friction force can be increased when the fan is clamped at the waist of the pants, preventing the fan from easily falling down easily.

It can be understood that, as shown into, the housingand the mounting shelltogether form a housing bodyof the portable fan. The housing bodyincludes an accommodating chamberfor accommodating the power supply assemblyand the fan assembly, a first air inletand an air outlet.

The accommodating chamberincludes a first air guide chamber. The air outlet, at least part of the accommodating chamber (the first air guide chamber) and the first air inletare communicated to each other in sequence along a first preset direction X-X.

The fan assemblyis located above the first air guide chamberwithin the accommodating chamberand between the first air inletand the air outlet, and is configured to drive an airflow to flow from the first air inletto the air outlet.

The power supply assemblyis located within the accommodating chamber. The power supply assemblyincludes the battery, and the batteryis offset from a projection of the fan assemblyalong the first preset direction X-X. The power supply assemblyis electrically connected to the fan assemblyto supply power to the fan assembly.

A first clamping device is connected to one side of the housing body (such as the mounting shell), and is configured to form a clamping space with the housing bodyfor clamping an external object (such as belts, pockets, backpacks, and tablets or objects with sheet-like or plate-like structures), so as to fix the portable fan onto the external object.

It can be understood that by arranging the power supply assemblyto be offset from the projection of the fan assemblyalong the first preset direction X-X, the fan assembly and the power supply assembly can be arranged side-by-side in the accommodating chamber of the housing body. This makes the position layout of the fan assembly and the power supply assembly in the housing body more reasonable and compact, which is beneficial to the miniaturization of the portable fan and increases its portability. Moreover, the air path formed by the fan assembly can also be offset from the power supply assembly, avoiding the power supply assembly affecting the air-flow efficiency of the fan assembly. As a result, the portable fan has a higher air-flow efficiency, stronger wind power, and better cooling effect.

Specifically, the housing bodyincludes a first side, a second side, a third side, a fourth side, a fifth sideand a sixth side.