CN218817070U

CN218817070U - Handheld fan with wind gathering function

Info

Publication number: CN218817070U
Application number: CN202220356014.7U
Authority: CN
Inventors: 陈丽芳
Original assignee: Shenzhen Zaiwan Technology Co ltd
Current assignee: Shenzhen Zaiwan Technology Co ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2023-04-07
Anticipated expiration: 2032-02-22

Abstract

The utility model provides a handheld fan with gather wind function, including fan head and handle, the fan head is long tube-shape and is equipped with air intake, air outlet and connects the fluid passage of air intake, air outlet, air intake and air outlet respectively are equipped with air inlet stator and air-out stator, be equipped with motor and impeller in the fluid passage, the motor can drive the impeller rotates and makes the air flow along air intake, fluid passage and air outlet direction, the cross-section of fan head has the radian, makes the width of air outlet position is less than the width of impeller position. The utility model can prevent the blade from cutting the user when rotating by hiding the impeller in the fan head; the distance between the impeller and the air outlet is prolonged, so that airflow is gathered in the fluid channel, air blown out from the air outlet is gathered, and the cool experience is better; the air flow at the air outlet is more concentrated by arranging the fluid channel with a specific shape.

Description

Handheld fan with wind gathering function

Technical Field

The utility model belongs to the technical field of the fan technique and specifically relates to indicate a handheld fan with gather wind function.

Background

The handheld fan is popular with more people due to the small size, delicacy, convenient carrying and convenient close-range use. The existing handheld fan generally uses a motor to drive axial flow fan blades, air flows in from the rear ends of the blades, and flows out from the front edges of the blades after being boosted through the blades.

Chinese patent document No. CN201920805309.6 provides a portable fan of stretching open type, including location shell, shell body and removable cover, the removable cover outside is equipped with the fan leaf, and removable cover inside is equipped with electric motor, power and control circuit board, realizes reducing the volume through folding fan leaf, conveniently carries.

But the flabellum of current handheld fan exposes on the market, for preventing that the user from cutting, the flabellum often supports or reduces the rotational speed of flabellum by flexible material for the air-out of fan is less, provides cool experience and feels relatively poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a solve above-mentioned problem a handheld fan with gather wind function.

To achieve the above object, the present invention provides a method for manufacturing a semiconductor device, which comprises the following steps:

the utility model provides a handheld fan with gather wind function, includes fan head and handle, the fan head is long tube-shape and is equipped with air intake, air outlet and connects the fluid passage of air intake, air outlet, air intake and air outlet respectively are equipped with air inlet stator and air-out stator, be equipped with motor and impeller in the fluid passage, the motor can drive the impeller rotates and makes the air flow along air intake, fluid passage and air outlet direction, the cross-section of fan head has the radian, makes the width in air outlet position is less than the width in impeller position. The impeller is hidden in the fan head, and the fluid is gathered through the fluid channel with a specific shape, so that the outlet air is larger and more concentrated.

Preferably, the fan head comprises a front cover and a rear cover which are fixedly connected, the front cover is integrally formed with or fixedly connected with the air outlet guide vane, the rear cover is integrally formed with or fixedly connected with the air inlet guide vane, the center of the front cover is connected with a cavity through the air outlet guide vane, a motor is installed in the cavity, an impeller is connected with the motor and then located outside the cavity, and a fluid channel is formed between the cavity and the air guide cover.

Preferably, the lower part of the front cover and the lower part of the rear cover are fixedly connected with a handle, a battery and a controller which are connected are arranged in the handle, the controller is connected with a switch and a charging interface, a wiring groove is arranged in the air outlet guide vane, and an electric wire enters the wiring groove and is separated from the fluid channel to be electrically connected with the motor and the controller.

Preferably, a blocking cover is arranged on the wiring groove, and the blocking cover covers the wiring groove after installation.

Preferably, the air outlet guide vane is arranged in a bent mode, and the outer surface of the air outlet guide vane is inwards sunken at the air outlet.

Preferably, the handle comprises a front shell and a rear shell, the front shell and the front cover are integrally formed, and the rear shell and the rear cover are integrally formed.

Preferably, the motor is a dc brushless external rotor motor, the impeller includes a hub and a blade, the hub is provided with a rotating shaft and a magnet, the blade is fixed on the outer side of the hub, the rotating shaft is inserted into the motor when the impeller and the motor are installed, and the magnet is located on the outer side of the motor.

Preferably, the blades are arranged spirally and at intervals, and two adjacent blades have an overlapping region on a cross section in the direction of the rotating shaft.

Preferably, the hub is conical or circular truncated cone-shaped and has a first end with the largest diameter and a second end with the smallest diameter, and the first end is located at the position where the section width of the fan head is the largest.

Preferably, the width of the same blade at different positions of the hub is different, and the width of the blade at the first end is not larger than that of the blade at the second end.

Preferably, the blades extend towards the air inlet, and the motor is located downstream in the air flow direction.

The beneficial effects of the utility model include: compared with the prior art, the impeller is hidden in the fan head, so that a user can be prevented from being cut when the blades rotate; the distance between the impeller and the air outlet is prolonged, so that airflow is gathered in the fluid channel, the air blown out from the air outlet is more gathered, and the cool experience is better; through setting up the fluid passage of specific shape, make the air current of air outlet more concentrated.

Drawings

Fig. 1 is a schematic view of the handheld fan of the present invention.

Fig. 2 is a schematic diagram of a first explosion of the handheld fan of the present invention.

Fig. 3 is a second explosion schematic diagram of the handheld fan of the present invention.

Fig. 4 is a first schematic sectional view of the handheld fan of the present invention.

Fig. 5 is a second schematic sectional view of the handheld fan of the present invention.

Fig. 6 is an overall schematic view of the motor of the present invention.

Fig. 7 is a schematic side view of the impeller of the present invention.

Fig. 8 is an overall schematic view of the impeller of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

The terms "comprises" and "comprising," and any variations thereof, in the description and claims, and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a list of elements, processes, systems, products, or devices is not necessarily limited to the particular list of elements, systems, products, or devices but may include other elements, processes, products, or devices not expressly listed or inherent to such elements, processes, products, or devices.

The terms "mounted", "provided", "connected" and "sleeved" in the description and claims of the present invention and the above-mentioned drawings should be interpreted broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art. When an arrangement is described as being "connected" or "coupled" or the like, it may be directly connected or may be indirectly connected through intervening components. If not indicated otherwise, a component "disposed on," "disposed on," or "connected to" another component does not exclude the two components from being integrally formed.

Furthermore, spatially relative terms, such as bottom, top, and the like, may be used to describe one element and/or feature's relationship to another element(s) and/or feature(s), such as is illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use and/or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "front" may be oriented "behind" other elements or features. The device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1-8, a handheld fan with a wind gathering function comprises a fan head 1 and a handle 2, wherein the fan head 1 is in a long cylinder shape and is provided with an air inlet 3, an air outlet 4 and a fluid channel 5 connecting the air inlet 3 and the air outlet 4, the air inlet 3 and the air outlet 4 are respectively provided with an air inlet guide vane 6 and an air outlet guide vane 7, a motor 8 and an impeller 9 are arranged in the fluid channel 5, and the motor 8 can drive the impeller 9 to rotate and enable air to flow along the directions of the air inlet 3, the fluid channel 5 and the air outlet 4.

Specifically, the fan head 1 comprises a front cover 10 and a rear cover 11 which are fixedly connected, the front cover 10 is provided with an air outlet 4, the air outlet 4 is directly or indirectly connected with an air outlet guide vane 7, the rear cover 11 is provided with an air inlet 3, and the air inlet 3 is directly or indirectly connected with an air inlet guide vane 6.

In this embodiment, the front cover 10 and the rear cover 11 are both configured as a long cylinder, the fan head 1 is formed by detachably and fixedly connecting the buckle along the front and rear direction, the air inlet guide vane 6 and the rear cover 11 are integrally formed or fixedly connected, the air outlet guide vane 7 and the front cover 10 are integrally formed or fixedly connected, the center of the front cover 10 is fixedly connected with the cavity 12 through the air outlet guide vane 7, the motor 8 is installed inside the cavity 12, the fluid passage 5 is formed between the outside of the cavity 12 and the fan head 1, the cross-sectional area of the fluid passage 5 at the air outlet 4 is the smallest under the obstruction of the cavity 12, and the cross-sectional area of the fluid passage 5 in the front and rear direction of the impeller 9 is also different, the cross-sectional area is the state that the inlet air is larger than the outlet air, so that the air is gathered in the fluid passage 5, and the air flow blown out from the air outlet 4 is more concentrated.

Preferably, in order to extend the collecting length of the air flow in the fluid passage 5 without increasing the size of the fan head 1, the impeller 9 faces the air inlet 3 and is located in the rear cover 11, and in order to reduce the volume and weight of the fan, the motor 8 is configured as a dc brushless external rotor motor 8.

Specifically, the impeller 9 includes a hub 13 and blades 14, a rotating shaft 15 and a plurality of magnets 16 are arranged in the hub 13, the rotating shaft 15 is located in the center of the hub 13, the magnets 16 are located at the edge of the hub 13, the blades 14 are spirally arranged on the outer surface of the hub 13 and are arranged at intervals, the motor 8 includes a stator, a shaft hole 17 for inserting the rotating shaft 15 is formed in the center of the stator, a coil 18 is arranged outside the shaft hole 17, during installation, the rotating shaft 15 is inserted into the shaft hole 17, the magnets 16 are sleeved outside the coil 18, after the stator is connected with a power supply, the coil 18 generates a magnetic field to enable the magnets 16 to drive the impeller 9 to rotate, meanwhile, the impeller 9 is connected with the cavity 12 or the motor 8 through magnetic adsorption of the magnets 16 and the stators, installation is more convenient, and compared with a common motor 8, the size is smaller and the weight is lighter, so that the overall size and the weight of the fan head 1 can be smaller and lighter, and the problem that the head and feet are lighter when the fan is used by hand is solved cannot occur.

Preferably, the hub 13 is conical or circular truncated cone-shaped, and has a first end 19 with the largest diameter and a second end 20 with the smallest diameter, each blade 14 is installed along the inclined surface of the hub 13, two adjacent blades 14 have an overlapping area in the section in the direction of the rotation axis 15, and the width of the same blade 14 at different positions of the hub 13 is different, in this embodiment, the width of the blade 14 at the first end 19 is not greater than the width of the blade 14 at the second end 20.

In the above embodiment, the handle 2 is fixedly connected to the lower portions of the front cover 10 and the rear cover 11, the handle 2 includes the front shell 21 and the rear shell 22, the front shell 21 and the front cover 10 are integrally formed, the rear shell 22 and the rear cover 11 are integrally formed, the battery 23 and the controller 24 which are connected are arranged in the handle 2, the controller 24 is connected to the switch 25 and the charging interface 26, the interiors of the front cover 10, the rear cover 11 and the handle 2 are communicated with each other, and the battery 23, the controller 24 and the motor 8 are electrically connected through a power supply line.

In order to hide the wiring, one of the air outlet guide vanes 7 at the lower end is provided with a wiring groove 27, two ends of the wiring groove 27 are respectively communicated with the handle 2 and the cavity 12, during installation, an electric wire is installed in the wiring groove 27 and is separated from the fluid channel 5 through the wiring groove 27, preferably, the wiring groove 27 is provided with a blocking cover 28, the wiring groove 27 is covered after the blocking cover 28 is installed, the electric wire cannot be observed from the air inlet 3 and the air outlet 4, so that the hiding effect is achieved, the whole product is more attractive, and the electric wire can be prevented from being broken by foreign objects when being exposed.

Preferably, a connecting line between the center of the motor 8 and the handle 2 is coincident with the axis 29 of the handle 2 or is positioned in front of the axis 29 of the handle 2, and when the fan is used by hand, the center of gravity of the fan is positioned at or close to the axis 29 of the handle 2 under the driving of wind power, so that the phenomenon that the fan is inclined backwards easily is avoided. In this embodiment, the axis 29 of the handle 2 is perpendicular to the fan head 1, and the center of the motor 8 is located forward of the axis 29 of the handle 2.

In the above embodiment, in order to make the air flow of the air outlet 4 more concentrated, the cross section of the fan head 1 has a curvature such that the width of the air outlet 4 is smaller than the width of the impeller 9, and the first end 19 of the hub 13 is located at the maximum cross-sectional width of the fan head, or the cross-sectional area of the air outlet 4 is smaller than the cross-sectional area of the air inlet 3 and the cross-sectional area of the fluid passage 5 at the impeller 9.

Preferably, the air inlet guide vane 6 is in a grid shape, the air outlet guide vane 7 is arranged in a bent manner, and the outer surface of the air outlet guide vane 7 is inwards recessed at the position of the air outlet 4 to form a step.

In other embodiments, in order to facilitate the molding and installation of the fan, the air guide sleeve 30 is disposed on the inner sides of the front cover 10 and the rear cover 11, the air guide sleeve 30 is in a long cylindrical shape and has a size matched with the size of the front cover 10 and the size of the rear cover 11, so that the air guide sleeve 30 can be inserted into the front cover 10 and the rear cover 11 for installation, and meanwhile, a limiting mechanism 33 is disposed between the air guide sleeve 30 and the front cover 10 and the rear cover 11 to prevent the air guide sleeve 30 from rotating in the fan head 1.

Specifically, the air guide sleeve 30 at least comprises a front sleeve 31 and a rear sleeve 32, the end of the front sleeve 31 is integrally formed or fixedly connected with the air outlet guide vane 7, the end of the rear sleeve 32 is integrally formed or fixedly connected with the air inlet guide vane 6, the front sleeve 31 is connected with the cavity 12 through the air outlet guide vane 7, a fluid channel 5 is formed between the cavity 12 and the front sleeve 31, after the fan is installed, the motor 8 is located in the front sleeve 31, and the impeller 9 is located outside the cavity 12 and located in the rear sleeve 32.

Preferably, the lower end of the front cover 31 or the rear cover 32 is provided with a through hole 34 for passing the power supply line, the up-down direction of the through hole 34 is communicated with the wiring groove 27 and the handle 2, and the through hole 34 can be shielded after the blocking cover 28 is installed.

In the above embodiment, in order to conveniently carry the fan, the handle 2 is provided with the hanging ring 35 or the hanging rope, and the fan can be hung on the neck through the hanging rope or hung on the backpack through the hanging ring 35.

Preferably, the bottom of the handle 2 is arranged to be flat, so that the fan can be used by standing on a horizontal table.

In this embodiment, a positioning mechanism is disposed between the hanging ring 35 and the handle 2, the positioning mechanism can position the hanging ring 35 in a horizontal backward direction, and when the fan is vertically placed for use, the hanging ring 35 forms a supporting seat to stably manufacture the fan on a horizontal table.

Specifically, a groove 36 is formed in the front shell 21 or the rear shell 22, the hanging ring 35 is placed in the groove 36, the front shell 21 and the rear shell 22 are buckled and connected, the hanging ring 35 is installed at the bottom of the handle 2, a protruding block 37 is arranged on the hanging ring 35, the protruding block 37 can be attached to the inner wall of the front shell 21 or the rear shell 22, and when the hanging ring 35 rotates to the supporting position, a limiting block is formed between the protruding block 37 and the inner wall of the front shell 21 or the inner wall of the rear shell 22, so that the hanging ring 35 cannot continue to rotate back and up.

The above description of the present invention is intended to be illustrative. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. A handheld fan with a wind gathering function comprises a fan head and a handle, wherein the fan head is in a long cylinder shape and is provided with an air inlet, an air outlet and a fluid passage for connecting the air inlet and the air outlet, the air inlet and the air outlet are respectively provided with an air inlet guide vane and an air outlet guide vane, a motor and an impeller are arranged in the fluid passage, the motor can drive the impeller to rotate and enable air to flow along the directions of the air inlet, the fluid passage and the air outlet, the handheld fan is characterized in that the cross section of the fan head is provided with a radian, the width of the air outlet is smaller than that of the impeller, a hanging ring or a hanging rope is arranged on the handle, and the center of the motor is coincided with the axis of the handle or is positioned in front of the axis of the handle.

2. The handheld fan with the wind gathering function as claimed in claim 1, wherein the fan head comprises a front cover and a rear cover which are fixedly connected, the front cover and the air outlet guide vanes are integrally formed or fixedly connected, the rear cover and the air inlet guide vanes are integrally formed or fixedly connected, the center of the front cover is connected with a cavity through the air outlet guide vanes, a motor is installed in the cavity, an impeller is connected with the motor and then located outside the cavity, and a fluid channel is formed between the cavity and the air guide sleeve.

3. The handheld fan with the wind gathering function as claimed in claim 2, wherein a handle is fixedly connected to the lower portion of the front cover and the rear cover, a battery and a controller are connected to the handle, the controller is connected with a switch and a charging interface, a wiring groove is formed in the wind outlet guide vane, and a wire enters the wiring groove and is blocked from the fluid channel so as to electrically connect the motor and the controller;

and/or a blocking cover is arranged on the wiring groove, and the blocking cover covers the wiring groove after installation.

4. The handheld fan with the wind gathering function as claimed in claim 3, wherein the outlet guide vanes are arranged in a curved shape, and the outer surface of the outlet guide vanes is recessed inwards at the outlet position.

5. The handheld fan with the function of collecting wind according to claim 3, wherein the handle comprises a front shell and a rear shell, the front shell and the front cover are integrally formed, and the rear shell and the rear cover are integrally formed.

6. The handheld fan with the wind gathering function as recited in any one of claims 1 to 5, wherein the motor is configured as a dc brushless external rotor motor, the impeller comprises a hub and a blade, the hub is provided with a rotating shaft and a magnet, the blade is fixed on an outer side of the hub, when the impeller is installed with the motor, the rotating shaft is inserted into the motor, and the magnet is located on an outer side of the motor.

7. The handheld fan with the wind gathering function as recited in claim 6, wherein the plurality of blades are arranged in a spiral shape at intervals, and two adjacent blades have an overlapping area in a cross section in the direction of the rotation axis.

8. The handheld fan with the wind gathering function as recited in claim 7, wherein the hub is conical or frustoconical and has a first end with a largest diameter and a second end with a smallest diameter, the first end being located where a cross-sectional width of the fan head is largest.

9. The handheld fan with the wind gathering function as recited in claim 8, wherein the width of the same blade at different positions of the hub is different, and the blade width at the first end is not greater than the blade width at the second end.

10. The handheld fan with the wind gathering function as recited in claim 9, wherein the blades extend in a direction of the wind inlet, and the motor is located downstream in a flow direction of the air.