Neck-hung fan

Abstract

The utility model provides a neck-hanging fan which comprises a shell, an air inlet cavity, a fixing cavity, an air duct and a containing cavity are sequentially formed in the shell in the length direction, the shell is further provided with an air inlet and an air outlet, the air inlet communicates with the air inlet cavity, and the air outlet communicates with the air duct; the braking assembly is contained in the fixing cavity and sucks air from the air inlet, and the air passes through the air inlet cavity, the braking assembly and the air duct and then is blown out from the air outlet; the control assembly comprises a first circuit board, a second circuit board and a power supply part, at least one of the first circuit board and the second circuit board is electrically connected with the power supply part, and the power supply part is arranged in the containing cavity; wherein two brake assemblies are arranged in the shell, the first circuit board is electrically connected with one brake assembly, the second circuit board is electrically connected with the other brake assembly, and the first circuit board is electrically connected with the second circuit board. The two independent circuit boards are arranged, so that the space arrangement of the circuit boards is more flexible, and the device can be more adaptive to a neck-hanging fan with a narrow space.

Description

Technical Field

[0001] The present application relates to the technical field of fans, and in particular to a neck-hanging fan with good air output effect. Background Art

[0002] In recent years, people are increasingly pursuing a more convenient life. In order to meet the demand for using fans in outdoor activities or other life scenarios, various neck-hanging fan products have appeared on the market, such as handheld fans, neck-hanging fans, etc.

[0003] For current neck-mounted fans, size directly determines their portability. However, to achieve basic functionality, the housing must contain a battery, fan, motor, and air duct. This makes it difficult to reduce the overall size, which in turn affects user frequency. Therefore, designing a compact neck-mounted fan is an urgent problem to be solved. Summary of the Invention

[0004] In view of this, the present application provides a neck-hanging fan, which divides the volume required by a large circuit board into the volume of two small circuit boards by setting up two independent circuit boards. The space setting of the circuit boards is more flexible and can better adapt to neck-hanging fans with limited space.

[0005] The present application provides a neck-hanging fan, comprising: a shell, which is provided with an air inlet cavity, a fixed cavity, an air duct and a accommodating cavity along the length direction, the shell is also provided with an air inlet and an air outlet, the air inlet is connected to the air inlet cavity, and the air outlet is connected to the air duct; a brake assembly is accommodated in the fixed cavity, the brake assembly sucks air from the air inlet, passes through the air inlet cavity, the brake assembly and the air duct, and then blows it out from the air outlet; a control assembly, comprising a first circuit board, a second circuit board and a power supply, at least one of the first circuit board and the second circuit board is electrically connected to the power supply, and the power supply is provided in the accommodating cavity; wherein two brake assemblies are provided in the shell, the first circuit board is electrically connected to one brake assembly, the second circuit board is electrically connected to the other brake assembly, and the first circuit board and the second circuit board are connected to each other.

[0006] Furthermore, the shell includes two accommodating cavities, which are respectively arranged at positions close to the two ends of the shell, or the two accommodating cavities are respectively arranged at positions close to the middle of the shell; two power supplies are provided in the shell, which are arranged in series or in parallel, the first circuit board is electrically connected to one power supply, and the second circuit board is electrically connected to the other power supply.

[0007] Furthermore, the shell includes a accommodating cavity, which is located in the middle of the shell. A power supply is provided in the shell, the first circuit board is electrically connected to the power supply, and the second circuit board is not electrically connected to the power supply.

[0008] Furthermore, the first circuit board is arranged in the accommodating cavity or the air inlet cavity, and the second circuit board is arranged in the accommodating cavity or the air inlet cavity.

[0009] Furthermore, the control component also includes a main control chip and a charging interface. The first circuit board is provided with the main control chip and the corresponding main control circuit. The second circuit board is provided with the charging interface and the corresponding charging and power supply circuit. The first circuit board and the second circuit board are electrically connected by wires, or the first circuit board and the second circuit board are wirelessly connected.

[0010] Furthermore, each of the brake components includes a drive board, which is provided with a drive circuit. The first circuit board is electrically connected to one of the drive boards via a wire or wirelessly connected, and the second circuit board is electrically connected to another of the drive boards via a wire or wirelessly connected.

[0011] Furthermore, the control component also includes an operating unit, which is electrically or wirelessly connected to the main control chip through a wire. The main control chip outputs a control signal, which is transmitted to the charging and power supply circuit of the second circuit board and the two driving circuits of the two driving boards through the first circuit board, the second circuit board and the wire, so as to turn on, turn off or adjust the speed of the two driving circuits of the two driving boards.

[0012] Furthermore, the brake assembly includes a motor, a fan and a drive plate, the drive plate and the motor are electrically connected, and the motor and the fan are mechanically connected.

[0013] Furthermore, the brake assembly also includes a cylinder, which includes an outer ring portion, an inner ring portion, and a plurality of connecting blades connecting the outer ring portion and the inner ring portion, the inner ring portion is arranged on the side of the outer ring portion close to the air duct, the motor is fixed to the side of the inner ring portion close to the air inlet chamber, and the fan is connected to the motor and is located on the side of the inner ring portion close to the air inlet chamber.

[0014] Furthermore, the cross-section of the fixed cavity is circular, the outer diameter of the fixed cavity is 28.6-34 mm, and the maximum cross-sectional area of ​​the air duct is less than or equal to the minimum cross-sectional area of ​​the fixed cavity.

[0015] Compared with the prior art, the neck-hanging fan of the present application has the following beneficial effects: by setting up two independent circuit boards, the volume required for a large circuit board is divided into the volume of two small circuit boards, the spatial setting of the circuit boards is more flexible, and can be more adaptable to neck-hanging fans with limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of an embodiment of the neck hanging fan of the present application;

[0017] Figure 2 This is a cross-sectional view of an embodiment of the neck-hanging fan of the present application;

[0018] Figure 3 yes Figure 2 Enlarged view of part A;

[0019] Figure 4 This is a schematic diagram of the circuit principle of an embodiment of the neck-hanging fan of the present application;

[0020] Figure 5 This is a schematic diagram of an embodiment of the neck-hanging fan of the present application with the housing removed;

[0021] Figure 6 This is a three-dimensional diagram of another embodiment of the neck hanging fan of the present application;

[0022] Figure 7 This is a cross-sectional view of another embodiment of the neck-hanging fan of the present application;

[0023] Figure 8 This is a cross-sectional view of another embodiment of the neck hanging fan of the present application. DETAILED DESCRIPTION

[0024] In order to facilitate a better understanding of the purpose, structure, features and effects of this application, this application is further described in conjunction with the accompanying drawings and specific implementation methods.

[0025] It should be noted that when an element is considered to be “connected to” another element, it can be directly connected to the other element or there may be an intervening element at the same time.

[0026] In this application, descriptions such as “first”, “second”, etc. are only used for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0027] In the description of this application, the terms "front", "back", "left", "right", "up", "down", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on this application.

[0028] In one embodiment, Figures 1 to 2 As shown, the neck hanging fan includes a shell 1, a brake assembly and a control assembly, and the brake assembly and the control assembly are both accommodated in the shell 1. The shell 1 is provided with an air inlet cavity 13, a fixed cavity 14, an air duct 15 and an accommodating cavity 16 along the length direction. The shell 1 is also provided with an air inlet 11 and an air outlet 12. The air inlet 11 is connected to the air inlet cavity 13, and the air outlet 12 is connected to the air duct 15. The brake assembly draws in air from the air inlet 11, passes through the air inlet cavity 13, the brake assembly and the air duct 15, and then blows it out from the air outlet 12. The control assembly includes a first circuit board 51, a second circuit board 52 and a power supply 53. At least one of the first circuit board 51 and the second circuit board 52 is electrically connected to the power supply 53, and the power supply 53 is provided in the accommodating cavity 16.

[0029] Two brake assemblies are provided within the housing 1. The first circuit board 51 is electrically connected to one brake assembly, and the second circuit board 52 is electrically connected to the other brake assembly. The first circuit board 51 and the second circuit board 52 are connected to each other. By providing two independent but connected circuit boards, the volume required for a large circuit board is divided into the volume of two smaller circuit boards, making the space for the circuit boards more flexible and more adaptable to neck fans with limited space.

[0030] It should be understood that in this embodiment, the air inlet chamber 13, the fixed chamber 14, the air duct 15, and the accommodating chamber 16 are sequentially provided along the length of the housing 1. Of course, in other embodiments, the accommodating chamber 16, the air inlet chamber 13, the fixed chamber 14, and the air duct 15 may also be sequentially provided along the length of the housing 1. The accommodating chamber 16 may be provided on one side of the air inlet chamber 13 or on one side of the air duct 15.

[0031] In one embodiment, Figures 1 to 2As shown, the housing 1 includes two accommodating cavities 16, each located near the center of the housing 1. Two power supply members 53 are provided within the housing 1, and the two power supply members 53 are arranged in series or in parallel. The first circuit board 51 is electrically connected to one power supply member 53, and the second circuit board 52 is electrically connected to the other power supply member 53.

[0032] In one embodiment, Figures 6 and 7 As shown, the housing 1 includes two accommodating cavities 16, which are respectively located near the two ends of the housing 1. Two power supply members 53 are provided within the housing 1, and the two power supply members 53 are arranged in series or in parallel. The first circuit board 51 is electrically connected to one of the power supply members 53, and the second circuit board 52 is electrically connected to the other power supply member 53.

[0033] By providing two power supply components 53 , the neck hanging fan is made more symmetrical and the weight is evenly distributed, and the two power supply components 53 can improve the endurance of the neck hanging fan.

[0034] In one embodiment, Figure 8 As shown, the housing 1 includes a housing cavity 16, which is located in the center of the housing 1. A power supply 53 is located within the housing 1. The first circuit board 51 is electrically connected to the power supply 53, while the second circuit board 52 is not electrically connected to the power supply 53. The housing cavity 16 is located in the center of the housing 1, and a large power supply 53 is used instead of two small, separate power supplies 53. This allows the power supplies 53 to be more centralized without affecting battery life, reducing wiring.

[0035] In one embodiment, Figures 6 to 8 As shown, the first circuit board 51 is disposed in the accommodating cavity 16, and the second circuit board 52 is disposed in the accommodating cavity 16. In another embodiment, as shown in FIG. Figures 1 to 2 As shown, the first circuit board 51 is disposed in the air inlet cavity 13, and the second circuit board 52 is disposed in the air inlet cavity 13. In other embodiments, one of the first circuit board 51 and the second circuit board 52 may be disposed in the air inlet cavity 13, and the other of the first circuit board 51 and the second circuit board 52 may be disposed in the accommodating cavity 16.

[0036] In one embodiment, Figures 2 to 8As shown, the control component also includes a main control chip 512 and a charging interface 522. The first circuit board 51 is provided with the main control chip 512 and the corresponding main control circuit 511. The second circuit board 52 is provided with the charging interface 522 and the corresponding charging and power supply circuit 521. By providing independent first circuit board 51 and second circuit board 52, the main control chip 512 and the charging interface 522 are respectively provided on different circuit boards, and then the main control circuit 511 and the charging and power supply circuit 521 are allocated to different circuit boards. The first circuit board 51 and the second circuit board 52 assume different functions to achieve functional division. In this embodiment, the first circuit board 51 and the second circuit board 52 are electrically connected through a wire 6. Of course, in other embodiments, the first circuit board 51 and the second circuit board 52 can also be connected wirelessly.

[0037] In one embodiment, Figures 2 to 5 As shown, each brake assembly includes a driver board 21, which is provided with a driver circuit 211. The first circuit board 51 is electrically connected to one driver board 21 via a wire 6, and the second circuit board 52 is electrically connected to the other driver board 21 via a wire 6. By assigning different circuits to different circuit boards, the different circuit boards can be more flexibly arranged within the housing 1. Of course, in other embodiments, the first circuit board 51 can also be wirelessly connected to one driver board 21, and the second circuit board 52 can also be wirelessly connected to the other driver board 21.

[0038] In one embodiment, Figures 1 to 5 As shown, the control component also includes an operating unit 54. The operating unit 54 is electrically or wirelessly connected to the main control chip 512 via a wire 6. The main control chip 512 outputs a control signal, which is transmitted to the charging and power supply circuit 521 of the second circuit board 52 and the two driving circuits 211 of the two driving boards 21 through the first circuit board 51, the second circuit board 52 and the wire 6, so as to turn on, turn off or adjust the speed of the two driving circuits 211 of the two driving boards 21. In this embodiment, the operating unit 54 is a scroll wheel key, and the operating unit 54 is directly electrically connected to the main control chip 512. In other embodiments, the operating unit 54 can be controlled by wired means such as a press key, a touch key, a sliding resistor, a touch slide, a touch screen, etc., or can be controlled by wireless means such as a mobile device or a remote control.

[0039] It should be understood that although the main control chip 512 and the main control circuit 511 are only provided on the first circuit board 51, the first circuit board 51 and the second circuit board 52 are electrically connected. Therefore, after the main control circuit 511 receives the control signal sent by the main control chip 512, it can be sent to the charging and power supply circuit 521 and the drive circuit 211 through a wired connection or a wireless connection, so as to achieve synchronous control of the two drive circuits 211 of the two drive boards 21 by the same control signal. It should be noted that the synchronous control of the two drive circuits 211 by the control signal means that the same control signal can simultaneously achieve an identical control action on the two drive circuits 211, but this is not limited to the two drive circuits 211 always maintaining the same working mode. In other embodiments, the two drive circuits 211 can also support independent control operations.

[0040] In addition, since the main control chip 512 and the charging interface 522 are arranged on different circuit boards, the operation unit 54 of the physical key and the charging interface 522 can be arranged at different positions of the shell 1, so that the product function is clearly divided and the appearance is more beautiful.

[0041] In one embodiment, Figure 2 、 Figure 3 and Figure 5 As shown, each of the brake assemblies includes a motor 2, a fan 3, and the drive plate 21. The drive plate 21 is electrically connected to the motor 2, and the motor 2 is mechanically connected to the fan 3. The cross-section of the fixed cavity 14 is circular, the outer diameter of the fixed cavity 14 is 28.6-34 mm, and the maximum cross-sectional area of ​​the air duct 15 is less than or equal to the minimum cross-sectional area of ​​the fixed cavity 14. It can be seen that the cross-sectional areas of the fixed cavity 14 and the air duct 15 of the neck-hanging fan are relatively small, and the overall volume of the neck-hanging fan is relatively small, making it easy to carry.

[0042] Specifically, the brake assembly also includes a cylinder 4, which includes an outer ring portion 41, an inner ring portion 42, and a plurality of connecting blades 43 connecting the outer ring portion 41 and the inner ring portion 42. The inner ring portion 42 is arranged on the side of the outer ring portion 41 close to the air duct 15, and the inner ring portion 42 is slightly protruded toward the direction of the air duct 15, so that the side of the outer ring portion 41 facing the air inlet chamber 13 has more space to arrange other structures. The motor 2 is fixed to the side of the inner ring portion 42 close to the air inlet chamber 13, and the fan 3 is connected to the motor 2 and is located on the side of the inner ring portion 42 close to the air inlet chamber 13. The space layout inside the cylinder 4 is reasonable.

[0043] In one embodiment, Figure 2 、 Figure 3 and Figure 5 As shown, the motor 2 is a three-phase brushless motor 2 .

[0044] It should be understood that Figures 1 to 5 For the first embodiment, Figures 6 and 7 For the second embodiment, Figure 8 The differences between the second and third embodiments and the first embodiment have been described, and other features are basically the same and will not be repeated here.

[0045] The above detailed description is only an illustration of the preferred embodiment of the present application, and does not limit the patent scope of the present application. Therefore, all equivalent technical changes made by using the description and illustrations of this invention are included in the patent scope of this invention.

Claims

1. A neck hanging fan, characterized in that: include: The shell is provided with an air inlet cavity, a fixing cavity, an air duct and a receiving cavity along the length direction. The shell is also provided with an air inlet and an air outlet, the air inlet is connected to the air inlet cavity, and the air outlet is connected to the air duct; a brake assembly housed in the fixed cavity, the brake assembly sucking air from the air inlet, passing through the air inlet cavity, the brake assembly and the air duct, and finally blowing air out from the air outlet; A control assembly, comprising a first circuit board, a second circuit board, and a power supply, wherein at least one of the first circuit board and the second circuit board is electrically connected to the power supply, and the power supply is disposed in the accommodating cavity; Wherein, two brake assemblies are provided in the housing, the first circuit board is electrically connected to one brake assembly, the second circuit board is electrically connected to the other brake assembly, and the first circuit board and the second circuit board are connected to each other.

2. The neck hanging fan according to claim 1, characterized in that: The housing includes two accommodating cavities, which are respectively arranged at positions close to two ends of the housing, or at positions close to the middle of the housing; Two power supply components are provided in the housing and are connected in series or in parallel. The first circuit board is electrically connected to one power supply component, and the second circuit board is electrically connected to the other power supply component.

3. The neck hanging fan according to claim 1, characterized in that: The shell includes a accommodating cavity, which is located in the middle of the shell. A power supply is provided in the shell. The first circuit board is electrically connected to the power supply, and the second circuit board is not electrically connected to the power supply.

4. The neck hanging fan according to any one of claims 1 to 3, characterized in that: The first circuit board is arranged in the accommodating cavity or the air inlet cavity, and the second circuit board is arranged in the accommodating cavity or the air inlet cavity.

5. The neck hanging fan according to any one of claims 1 to 3, characterized in that: The control component also includes a main control chip and a charging interface. The first circuit board is provided with the main control chip and the corresponding main control circuit. The second circuit board is provided with the charging interface and the corresponding charging and power supply circuit. The first circuit board and the second circuit board are electrically connected by wires, or the first circuit board and the second circuit board are wirelessly connected.

6. The neck hanging fan according to claim 5, characterized in that: Each of the brake components includes a drive board, which is provided with a drive circuit. The first circuit board is electrically connected to one of the drive boards via a wire or wirelessly connected, and the second circuit board is electrically connected to another of the drive boards via a wire or wirelessly connected.

7. The neck hanging fan according to claim 6, characterized in that: The control component also includes an operating unit, which is electrically or wirelessly connected to the main control chip via a wire. The main control chip outputs a control signal, which is transmitted to the charging and power supply circuit of the second circuit board and the two drive circuits of the two drive boards through the first circuit board, the second circuit board and the wire, so as to turn on, turn off or adjust the speed of the two drive circuits of the two drive boards.

8. The neck hanging fan according to claim 1, characterized in that: The brake assembly includes a motor, a fan and a drive plate. The drive plate is electrically connected to the motor, and the motor is mechanically connected to the fan.

9. The neck hanging fan according to claim 8, characterized in that: The brake assembly also includes a cylinder, which includes an outer ring portion, an inner ring portion, and a plurality of connecting leaves connecting the outer ring portion and the inner ring portion. The inner ring portion is arranged on a side of the outer ring portion close to the air duct, the motor is fixed to a side of the inner ring portion close to the air inlet chamber, and the fan is connected to the motor and is located on a side of the inner ring portion close to the air inlet chamber.

10. The neck hanging fan according to claim 9, characterized in that: The cross section of the fixed cavity is circular, the outer diameter of the fixed cavity is 28.6-34 mm, and the maximum cross-sectional area of ​​the air duct is less than or equal to the minimum cross-sectional area of ​​the fixed cavity.

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