CN221322764U - White noise helps dormancy fan - Google Patents

Abstract

The utility model provides a white noise helps dormancy fan, including the base, locate the shell on the base, locate the preceding net of shell front end, locate the back net of shell rear end, and locate the fan module in the shell, be equipped with between fan module and the preceding net and help the dormancy subassembly, the control assembly that is used for controlling helping dormancy subassembly and fan module is installed to preceding net, the fan module includes first brushless motor, by first brushless motor control pivoted first flabellum, help the dormancy subassembly including the installation shell, locate the second brushless motor in the installation shell, by second brushless motor control pivoted second flabellum, be provided with the air current along the lateral wall circumference equidistant of shell and pass the hole. The utility model provides a white noise sleep-aiding fan, which is characterized in that a control assembly is used for controlling a first brushless motor to drive a first fan blade to rotate so as to realize blowing and cooling; the control component controls the second brushless motor to drive the second fan blade to rotate, so that the air flow passes through the air flow through holes to generate sound, and the fan function and the white noise sleep-assisting function are realized.

Description

White noise helps dormancy fan

Technical Field

The utility model relates to the technical field of fans, in particular to a white noise sleep-aiding fan.

Background

With the development of the smart home market, the functions of the traditional home appliances cannot meet the demands of users.

The patent document with publication number CN216767816U discloses a fan blade and a fan, wherein the fan blade comprises a fan blade, a positioning piece and a fan beam. The fan blade comprises a fixed ring, a limiting plate and a plurality of blades, wherein the fixed ring is hollow and is provided with a through hole, the blades are annularly arranged and connected to the outer side of the fixed ring, the limiting plate is connected with the inner side or the end side of the fixed ring, the limiting plate is provided with an opening which is axially the same as the through hole and is mutually communicated, and the diameter of the opening is larger than the width of the limiting plate; the positioning piece is used for being detachably mounted with the fan blade and comprises a main body part and a positioning part, wherein the main body part is used for being accommodated in the through hole and is abutted against the limiting plate, and the positioning part is connected with the main body part and extends out of the opening; the blade bundle is located the limiting plate is kept away from one side of main part, the blade bundle is used for the location portion can dismantle fixedly, the blade bundle be used for with the main part cooperation is thereby with the limiting plate limit is located between the blade bundle with the portion of accomodating.

The device provides cooling function for the user, but the rotation of flabellum has sent the noise simultaneously, and when the user sleeps, fan pivoted noise can lead to the user to be difficult to the sleep, influences user's sleep quality.

Disclosure of utility model

In view of this, the embodiments of the present disclosure provide a white noise sleep-aiding fan having both a fan function and a white noise sleep-aiding function.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a white noise helps dormancy fan, including the base, locate the shell on the base, locate the preceding net of shell front end, locate the back net of shell rear end, and locate the fan module in the shell, be equipped with between fan module and the preceding net and help the dormancy subassembly, the control assembly that is used for controlling helping dormancy subassembly and fan module is installed to preceding net, the fan module includes first brushless motor, by first brushless motor control pivoted first flabellum, help the dormancy subassembly including the installation shell, locate the second brushless motor in the installation shell, by second brushless motor control pivoted second flabellum, be provided with the air current along the lateral wall circumference equidistant of shell and pass the hole.

Compared with the prior art, the utility model has the advantages that: the operation of the first brushless motor and the second brushless motor is respectively and independently controlled through the control component, the first brushless motor is controlled to drive the first fan blade to rotate, air is sucked from the rear net and air flow is output from the front net, blowing and cooling are achieved, and the rotating speed of the first fan blade is controlled through controlling the power of the first brushless motor, so that the effect of controlling the air quantity is achieved; the second fan blade is driven to rotate through the second brushless motor, so that the air flow passes through the holes to generate sound, the sound is heard by a person when sleeping to help relieve pressure, the sleeping quality is improved, and the rotating speed of the second fan blade is controlled by controlling the power of the second brushless motor, so that the effect of controlling the volume of white noise is achieved; and the first fan blade is arranged on one side close to the rear net and is used for generating air quantity, and the outside air flow is sucked more easily when the first fan blade is close to the rear net, so that the air suction efficiency is enhanced, and the air quantity is increased.

In some embodiments, the fan assembly includes the motor support, and the motor support is located between first flabellum and the first brushless motor, is provided with the wind-guiding flabellum along the equidistant setting of motor support's lateral wall circumference, through the improvement, the setting of wind-guiding flabellum when first flabellum rotates and produces wind-force, makes these wind blow to the user through the wind-guiding flabellum through the preceding net through the wind-guiding flabellum, prevents to flow around because of wind, leads to wind-force decline to through the equidistant setting of wind-guiding flabellum along motor support's lateral wall circumference, make wind-force output distribution more even.

In some embodiments, the control assembly includes the circuit board, install the control panel in the circuit board outside, and locate five elastic component between circuit board and the control panel, the circuit board includes that the amount of wind increases the gear, the amount of wind decreases the gear, the white noise volume increases the gear, the white noise volume decreases the gear, and the switch gear, the elastic component is with the amount of wind increases the gear, the amount of wind decreases the gear, the white noise volume increases the gear, the white noise volume decreases the gear, and the switch gear one-to-one, through the improvement, through pressing control panel, thereby make corresponding elastic component compress, thereby the elastic component other end presses corresponding station on the circuit board, thereby realize controlling amount of wind increases the gear, the amount of wind decreases the gear, the white noise volume increases the gear, the white noise volume decreases the gear, and the switch gear, simple structure, the simple operation.

In some embodiments, the inner side of the control panel is provided with five guide holes, the elastic piece is arranged in the guide holes, through the improvement, the elastic piece is arranged in the guide holes, when the elastic piece moves in the guide holes in the working process, the guide holes play a role in guiding the elastic piece and limit the elastic piece, so that the elastic piece is prevented from being separated from a preset position and is prevented from being operated wrongly.

In some embodiments, the mounting shell is close to fan subassembly one end and locates the mounting groove, and the first brushless motor is held to the mounting groove, through the improvement, through locating the first brushless motor in the mounting groove, optimize the part overall arrangement in the shell, reduce the whole volume of fan, the planning is more reasonable.

In some embodiments, the base includes fixed part and sets up in the connecting portion at fixed part both ends respectively, and the left and right sides of shell is rotatable coupling with the connecting portion respectively, through the improvement, the fixed part supports the shell and is applicable in multiple application environment, and the shell is rotatable to be connected with the connecting portion and realizes adjusting the fan and blows the direction, satisfies user's different demands.

In some embodiments, the limiting gear is installed on both sides of the shell, the rotating piece is arranged between the limiting gear and the connecting portion, the rotating piece is fixedly connected with the connecting portion, the limiting gear comprises a plurality of protruding portions which are elastically deformed by external force, the protruding portions are matched with the limiting gear, the protruding portions are arranged in tooth grooves of the limiting gear, through the improvement, the fixing portion is used for fixing the fixing portion so that the rotating piece is integrally kept still, meanwhile, the shell rotates relative to the connecting portion, the limiting gear rotates, the protruding portions of the rotating piece are deformed by external force, tooth grooves of the limiting gear for accommodating the protruding portions are changed, when rotation is stopped, the protruding portions are accommodated in new tooth grooves of the limiting gear, the wall surfaces of the protruding portions are propped against the wall surfaces of the tooth grooves, and the limiting gear and the rotating piece are kept relatively still under the condition that the rotation of a user is not carried out, so that the positioning of the shell is achieved.

In some embodiments, the tooth tip of the limiting gear is arranged in a round angle, and through the improvement, the hard collision in the relative rotation process of the limiting gear and the protruding part is effectively reduced, the damage to the parts is caused, and the service life is prolonged.

In some embodiments, the protruding portion quantity is two, and the protruding portion is along the center pin symmetry setting of rotating the piece, through the improvement, when the setting reinforcing positioning effect of two protruding portions, prevent to make the shell rotate unsmoothly because of frictional force is too big, and the protruding portion is along the center pin symmetry setting of rotating the piece for spacing gear atress is more even.

In some embodiments, the lower end surface of the fixing part is provided with a friction strip, and by the improvement, when the fixing part is placed on a plane, the friction force is increased through the friction strip and the external plane, so that the fixing part is prevented from moving during operation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of an explosive structure according to the present utility model;

FIG. 3 is a schematic view of an explosion structure at another angle according to the present utility model;

FIG. 4 is a schematic cross-sectional view of the present utility model;

FIG. 5 is a schematic view of the structure of the mounting shell of the present utility model;

FIG. 6 is a schematic view of the internal structure of the present utility model;

FIG. 7 is a schematic view of the structure of the control panel of the present utility model;

FIG. 8 is a schematic diagram of the circuit board and elastic member of the present utility model;

FIG. 9 is a schematic diagram of the cooperation between the limiting gear and the rotating member;

FIG. 10 is a schematic view of the base, rotating member and limiting gear of the present utility model;

FIG. 11 is a schematic view of a limiting gear according to the present utility model;

FIG. 12 is a schematic view of a rotor according to the present utility model;

fig. 13 is a schematic structural view of the base of the present utility model.

In the figure: 1. a base; 1.1, a fixing part; 1.1.1, friction strips; 1.2, a connecting part; 2. a rotating member; 2.1, a protruding part; 3. a housing; 3.1, an upper shell; 3.2, a lower shell; 3.3, limiting gears; 4. a front net; 5. a control assembly; 5.1, a circuit board; 5.2, a control panel; 5.2.1, guiding holes; 5.3, an elastic piece; 6. a fan assembly; 6.1, a first brushless motor; 6.2, a first fan blade; 6.3, a motor bracket; 6.3.1, guiding fan blades; 7. a sleep aid component; 7.1, a second brushless motor; 7.2, second flabellum; 7.3, mounting the shell; 7.3.1, air flow through the holes; 7.3.2, mounting grooves; 8. a back net; 9. and a power supply connector.

Detailed Description

The application will now be described in detail with reference to the drawings and to specific embodiments.

Other advantages and effects of the present application will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present application with reference to specific examples. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. The application may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, apparatus may be implemented and/or methods practiced using any number and aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should also be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present application by way of illustration, and only the components related to the present application are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided in order to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details.

The following describes the technical scheme provided by each embodiment of the present application with reference to the accompanying drawings.

Referring to fig. 1 to 6, in the present embodiment: the utility model provides a white noise helps dormancy fan, including base 1, locate the shell 3 on the base 1, locate the preceding net 4 of shell 3 front end, locate the back net 8 of shell 3 rear end, and locate the fan module 6 in the shell 3, be equipped with between fan module 6 and the preceding net 4 and help dormancy subassembly 7, the control module 5 that is used for controlling helping dormancy subassembly 7 and fan module 6 is installed to preceding net 4, fan module 6 includes first brushless motor 6.1, by the first flabellum 6.2 of first brushless motor 6.1 control pivoted, help dormancy subassembly 7 includes installation shell 7.3, locate the second brushless motor 7.1 in the installation shell 7.3, by the second brushless motor 7.1 control pivoted second flabellum 7.2, be provided with air current through hole 7.3.1 along the lateral wall circumference equidistant of shell 3.

The operation of the first brushless motor 6.1 and the second brushless motor 7.1 are respectively and independently controlled through the control component 5, the first brushless motor 6.1 is controlled to drive the first fan blade 6.2 to rotate, air is sucked from the rear net 8 and air flow is output from the front net 4, blowing and cooling are realized, and the rotating speed of the first fan blade 6.2 is controlled through controlling the power of the first brushless motor 6.1, so that the effect of controlling the air quantity is achieved; the second brushless motor 7.1 drives the second fan blades 7.2 to rotate, so that the air flow passes through the holes 7.3.1 to generate sound, and people can hear the sound to help relieve pressure and improve sleeping quality when sleeping, and the rotating speed of the second fan blades 7.2 is controlled by controlling the power of the second brushless motor 7.1, so that the effect of controlling the white noise volume is achieved; and the first fan blade 6.2 is arranged on one side close to the rear net 8, the first fan blade 6.2 is used for generating air quantity, the outside air flow is easier to suck when the first fan blade is closer to the rear net 8, the air sucking efficiency is enhanced, and the air quantity is increased.

It should be noted that the outer shell 3 comprises an upper shell 3.1 and a lower shell 3.2, and the upper shell 3.1 is detachably connected with the lower shell 3.2, so that the installation is more convenient, and the overhaul is more convenient.

In some embodiments, as shown in fig. 1-6, the fan assembly 6 includes a motor bracket 6.3, the motor bracket 6.3 is disposed between the first fan blade 6.2 and the first brushless motor 6.1, and air guide blades 6.3.1 are disposed at equal intervals along the circumferential direction of the side wall of the motor bracket 6.3, it should be noted that, when the first fan blade 6.2 rotates to generate wind power, the wind power is blown to a user through the front net 4 by the air guide blades 6.3.1, so that the wind power is prevented from falling due to the flowing around, and the wind power output distribution is more uniform by the arrangement of the air guide blades 6.3.1 at equal intervals along the circumferential direction of the side wall of the motor bracket 6.3.

In some embodiments, as shown in fig. 7-8, the control assembly 5 includes a circuit board 5.1, a control panel 5.2 installed on the outer side of the circuit board 5.1, and five elastic members 5.3 disposed between the circuit board 5.1 and the control panel 5.2, where the circuit board 5.1 includes an air volume up gear, an air volume down gear, a white noise volume up gear, a white noise volume down gear, and a switch gear, and the elastic members 5.3 sequentially correspond to the air volume up gear, the air volume down gear, the white noise volume up gear, the white noise volume down gear, and the switch gear one by one, and it is required to be explained that by pressing the control panel 5.2, the corresponding elastic members 5.3 are compressed, so that the other end of the elastic members 5.3 press the corresponding stations on the circuit board 5.1, thereby realizing control of the air volume up gear, the air volume down gear, the white noise volume up gear, the white noise volume down gear, and the switch gear.

It should be noted that, the circuit board 5.1 includes bluetooth module, can realize controlling circuit board 5.1 including the amount of wind increases gear, amount of wind decreases gear, white noise volume increases gear, white noise volume decreases gear and switch gear through bluetooth module, realize remote control fan.

It should be noted that the power connector 9 for supplying power to the circuit board 5.1 is connected to the rear net 8, and the power connector 9 is detachably connected to the rear net 8.

In some embodiments, as shown in fig. 7-8, the inner side of the control panel 5.2 is provided with five guide holes 5.2.1, the elastic piece 5.3 is provided in the guide hole 5.2.1, it should be noted that the elastic piece 5.3 is provided in the guide hole 5.2.1, when the elastic piece 5.3 moves in the guide hole 5.2.1 in the working process, the guide hole 5.2.1 plays a role in guiding the elastic piece 5.3 and also limits the elastic piece 5.3, so that the elastic piece 5.3 is prevented from being separated from a preset position and is prevented from being operated incorrectly.

It should be noted that, the elastic piece 5.3 is a conventional spring, and the diameter of the elastic piece 5.3 is equal to the diameter of the inner wall of the guide hole 5.2.1, the elastic piece 5.3 is a conventional spring, so that the cost of the device can be saved, the maintenance and replacement are more convenient, the diameter of the elastic piece 5.3 is equal to the diameter of the inner wall of the guide hole 5.2.1, and the error of the control component 5 caused by the rotation of the elastic piece 5.3 in the guide hole 5.2.1 can be prevented.

In some embodiments, as shown in fig. 4-5, one end of the mounting shell 7.3, which is close to the fan assembly 6, is disposed in the mounting groove 7.3.2, the first brushless motor 6.1 is disposed in the mounting groove 7.3.2, and it should be noted that, by disposing the first brushless motor 6.1 in the mounting groove 7.3.2, the layout of the parts in the housing 3 is optimized, the overall size of the fan is reduced, and the planning is more reasonable.

In some embodiments, as shown in fig. 9-13, the base 1 includes a fixing portion 1.1 and connection portions 1.2 respectively disposed at two ends of the fixing portion 1.1, and left and right sides of the housing 3 are rotatably connected with the connection portions 1.2 respectively, it should be noted that the fixing portion supports the housing 3 and is applicable to various application environments, and the rotatable connection between the housing 3 and the connection portions 1.2 realizes adjustment of blowing direction of the fan, so as to meet different requirements of users.

In some embodiments, as shown in fig. 9-13, the limiting gear 3.3 is installed on both the left and right sides of the housing 3, the rotating member 2 is disposed between the limiting gear 3.3 and the connecting portion 1.2, the rotating member 2 is fixedly connected with the connecting portion 1.2, the limiting gear 3.3 includes a plurality of protruding portions 2.1 that are elastically deformed by external force, the protruding portions 2.1 are matched with the limiting gear 3.3, the protruding portions 2.1 are disposed in the tooth grooves of the limiting gear 3.3, it is required to be stated that the fixing portion 1.1 is fixed so that the rotating member 2 is integrally kept stationary, and meanwhile, the housing 3 is rotated relative to the connecting portion 1.2, so that the limiting gear 3.3 is rotated, the protruding portions 2.1 of the rotating member 2 are deformed by external force, so that tooth grooves of the limiting gear 3.3 for accommodating the protruding portions 2.1 are changed, and when the rotation is stopped, the protruding portions 2.1 are accommodated in the new tooth grooves of the limiting gear 3.3, the wall surfaces of the protruding portions 2.1 are abutted against the tooth grooves, so that the limiting gear 3.3 and the rotating member 2 are kept stationary relative to the housing 3 by the user.

In some embodiments, as shown in fig. 9-13, the tooth tips of the limiting gear 3.3 are rounded, which needs to be noted, so that the damage to parts caused by the hard collision in the relative rotation process of the limiting gear 3.3 and the protruding part 2.1 is effectively reduced, and the service life is prolonged.

In some embodiments, as shown in fig. 9-13, the number of the protruding portions 2.1 is two, and the protruding portions 2.1 are symmetrically arranged along the central axis of the rotating member 2, it should be noted that, when the positioning effect is enhanced by the arrangement of the two protruding portions 2.1, the housing 3 is prevented from rotating smoothly due to excessive friction force, and the protruding portions 2.1 are symmetrically arranged along the central axis of the rotating member 2, so that the stress of the limiting gear 3.3 is more uniform.

In some embodiments, as shown in fig. 13, the lower end surface of the fixing portion 1.1 is provided with a friction strip 1.1.1, and it should be noted that when the fixing portion 1.1 is placed on a plane, the friction strip 1.1.1 increases friction with an external plane to prevent the fixing portion from moving during operation.

The working principle and the using flow of the utility model are as follows:

The fan is mainly suitable for sleeping-aid operation when a user sleeps, before the fan is used, the power supply connecting piece 9 is inserted into the external circuit to provide electric energy for the device, the power of the first brushless motor 6.1 or the second brushless motor 7.1 is adjusted through the control panel 5.2, so that the rotation speed of the first fan blade 6.2 and the rotation speed of the second fan blade 7.2 are adjusted, the second fan blade 7.2 generates specific sound through the air flow passing through the hole 7.3.1 when the fan generates wind force, the sound is generated, and then the sleeping-aid effect on the user is achieved.

Meanwhile, the specification uses specific words to describe the embodiments of the specification. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the present description. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the present description may be combined as suitable.

Furthermore, the order in which the elements and sequences are processed, the use of numerical letters, or other designations in the description are not intended to limit the order in which the processes and methods of the description are performed unless explicitly recited in the claims. While certain presently useful inventive embodiments have been discussed in the foregoing disclosure, by way of various examples, it is to be understood that such details are merely illustrative and that the appended claims are not limited to the disclosed embodiments, but, on the contrary, are intended to cover all modifications and equivalent arrangements included within the spirit and scope of the embodiments of the present disclosure. For example, while the system components described above may be implemented by hardware devices, they may also be implemented solely by software solutions, such as installing the described system on an existing processing device or mobile device.

While the basic concepts have been described above, it will be apparent to those skilled in the art that the foregoing detailed disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements, and adaptations to the present disclosure may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within this specification, and therefore, such modifications, improvements, and modifications are intended to be included within the spirit and scope of the exemplary embodiments of the present invention.

Claims (10)

1. The utility model provides a white noise helps dormancy fan, includes base (1), locates shell (3) on base (1), locate preceding net (4) of shell (3) front end, locate back net (8) of shell (3) rear end to and locate fan unit (6) in shell (3), its characterized in that: be equipped with between fan module (6) with preceding net (4) and help dormancy subassembly (7), preceding net (4) are installed and are used for controlling help dormancy subassembly (7) with control module (5) of fan module (6), fan module (6) include first brushless motor (6.1), by first brushless motor (6.1) control pivoted first flabellum (6.2), help dormancy subassembly (7) include installation shell (7.3), locate second brushless motor (7.1) in installation shell (7.3), by second brushless motor (7.1) control pivoted second flabellum (7.2), follow lateral wall circumference equidistant of shell (3) are provided with air current through hole (7.3.1).

2. A white noise sleep aiding fan as claimed in claim 1, wherein: the fan assembly (6) comprises a motor support (6.3), the motor support (6.3) is arranged between the first fan blades (6.2) and the first brushless motor (6.1), and air guide fan blades (6.3.1) are arranged at equal intervals along the circumferential direction of the side wall of the motor support (6.3).

3. A white noise sleep aiding fan as claimed in claim 1, wherein: the control assembly (5) comprises a circuit board (5.1), a control panel (5.2) arranged on the outer side of the circuit board (5.1) and five elastic pieces (5.3) arranged between the circuit board (5.1) and the control panel (5.2), wherein the circuit board (5.1) comprises an air volume increasing gear, an air volume decreasing gear, a white noise volume increasing gear, a white noise volume decreasing gear and a switch gear, and the elastic pieces (5.3) are sequentially in one-to-one correspondence with the air volume increasing gear, the air volume decreasing gear, the white noise volume increasing gear, the white noise volume decreasing gear and the switch gear.

4. A white noise sleep aiding fan according to claim 3, wherein: five guide holes (5.2.1) are formed in the inner side of the control panel (5.2), and the elastic piece (5.3) is arranged in the guide holes (5.2.1).

5. A white noise sleep aiding fan as claimed in claim 1, wherein: the mounting shell (7.3) is close to one end of the fan assembly (6) and is arranged in the mounting groove (7.3.2), and the first brushless motor (6.1) is arranged in the mounting groove (7.3.2).

6. A white noise sleep aiding fan as claimed in claim 1, wherein: the base (1) comprises a fixing part (1.1) and connecting parts (1.2) respectively arranged at two ends of the fixing part (1.1), and the left side and the right side of the shell (3) are respectively rotatably connected with the connecting parts (1.2).

7. A white noise-aiding sleep fan as in claim 6, wherein: limiting gear (3.3) are all installed to the left and right sides of shell (3), limiting gear (3.3) with be equipped with between connecting portion (1.2) and rotate piece (2), rotate piece (2) with connecting portion (1.2) fixed connection, limiting gear (3.3) are including receiving a plurality of bulge (2.1) that external force took place elastic deformation, bulge (2.1) with limiting gear (3.3) cooperation, bulge (2.1) are located in the tooth's socket of limiting gear (3.3).

8. A white noise-aiding sleep fan as set forth in claim 7, wherein: the tooth tips of the limiting gear (3.3) are arranged in a round angle.

9. A white noise-aiding sleep fan as set forth in claim 7, wherein: the number of the protruding parts (2.1) is two, and the protruding parts (2.1) are symmetrically arranged along the central axis of the rotating piece (2).

10. A white noise-aiding sleep fan as in claim 6, wherein: the lower end face of the fixing part is provided with a friction strip (1.1.1).