Neck-hung fan circuit board mounting structure

Abstract

The utility model discloses a neck-hanging fan circuit board installation structure which comprises a support capable of being worn on the neck of a human body, the support is provided with a shell located on the two sides of the neck of the human body, an air channel, a fan assembly and a main control circuit board are arranged in the shell, the outer surface of the shell is provided with an air inlet and an air outlet which are communicated with the air channel, and the fan assembly is provided with a motor and an impeller. The impeller is provided with a hub and a plurality of blades surrounding the outer side of the hub, a main control circuit board electrically connected with the motor is arranged in the shell, the main control circuit board is located on the side, away from the impeller, of the axial direction of the motor, and the projection of the main control circuit board in the air flowing direction is located within the diameter range of the hub. And formation of an air duct is prevented from being affected, and product miniaturization is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a neck fan technical field, specifically to a neck fan circuit board mounting structure. BACKGROUND

[0002] The neck fan is a wearable blowing device on the neck of the user, which can move with the user and release the hands of the user, blows air to the face and neck of the user, and achieves the purpose of cooling and heat dissipation.

[0003] The neck fan generally comprises a bracket wearable on the neck, the bracket has a shell on both sides of the neck of the human body, the shell is provided with an air duct, a fan assembly and a main control circuit board, the main control circuit board is electrically connected with the motor on the fan assembly, the shell is provided with an air inlet and an air outlet outside, the fan assembly sucks air from the air inlet and delivers it to the air duct, and finally blows it out from the air outlet. However, due to the unreasonable position layout of the control circuit board, the formation of the air duct is affected, which is not conducive to the miniaturization of the product. UTILITY MODEL CONTENTS

[0004] The utility model provides a neck fan circuit board mounting structure in view of the deficiency of prior art, the position layout of its main control circuit board is reasonable, the formation of the air duct is avoided, and the miniaturization of the product is facilitated.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A neck fan circuit board mounting structure comprises a bracket wearable on the neck of the human body, the bracket has a shell on both sides of the neck of the human body, the shell is provided with an air duct, a fan assembly and a main control circuit board, the outer surface of the shell is provided with an air inlet and an air outlet in communication with the air duct, the fan assembly has a motor and an impeller, the impeller has a hub and a plurality of blades around the outside of the hub, characterized in that:

[0007] The shell is provided with a main control circuit board electrically connected with the motor, the main control circuit board is located on the side of the motor axial direction away from the impeller, and the projection of the main control circuit board in the air flow direction is located within the diameter range of the hub.

[0008] By arranging the main control circuit board on the side of the motor axial direction away from the impeller, the projection of the main control circuit board in the air flow direction is located within the diameter range of the hub, the side of the motor axial direction away from the impeller is an invalid air outlet area, and arranging the main control circuit board in the invalid air outlet area can make the main control circuit board float in the shell without affecting the formation of the air duct, so that the product size is greatly reduced, and the miniaturization of the product is facilitated.

[0009] As a preferred scheme, the air duct is provided with a wind guide cover, the wind guide cover is provided with a mounting portion and a plurality of air guide holes, the plurality of air guide holes are arranged around the outside of the mounting portion, and the main control circuit board and the motor are mounted on the mounting portion.

[0010] As a preferred scheme, the motor is mounted on one side of the mounting portion close to the air inlet, and the main control circuit board is mounted on the other side of the mounting portion away from the motor.

[0011] As a preferred scheme, the mounting portion is provided with a connecting hole, the main control circuit board is provided with a mounting hole, and a screw passes through the mounting hole and the connecting hole to connect the main control circuit board and the mounting frame.

[0012] As a preferred scheme, the mounting portion is provided with a positioning column, and the main control circuit board is provided with a positioning hole for the positioning column to extend into.

[0013] As a preferred scheme, the mounting portion is provided with a groove, and the groove can be used for components on the main control circuit board to extend into.

[0014] As a preferred scheme, the other side of the mounting portion away from the motor is connected with a fairing, the fairing extends along the flow direction of the air, and the main control circuit board is located in the fairing.

[0015] As a preferred scheme, the mounting portion is provided with a plurality of air guide plates around the outer side in the circumferential direction, the air guide holes are formed between adjacent two air guide plates, the air guide plates are provided with an extension part extending along the flow direction of the air, and the fairing is arranged around the inner side of the extension part close to the mounting portion.

[0016] As a preferred scheme, the fairing is clamped with the mounting portion, the mounting portion is provided with a positioning groove around the outer wall in the circumferential direction, and one end of the fairing is provided with a positioning portion embedded in the positioning groove.

[0017] As a preferred scheme, the thickness direction of the main control circuit board is parallel to the axial direction of the motor.

[0018] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically, the main control circuit board is arranged on the side away from the impeller in the axial direction of the motor, the projection of the main control circuit board in the air flow direction is located in the diameter range of the hub, the side away from the impeller in the axial direction of the motor is an invalid air outlet area, and the arrangement of the main control circuit board in the invalid air outlet area can make the main control circuit board float in the shell without affecting the formation of the air duct, so that the product size and the occupation of the air duct space are greatly reduced, and the product miniaturization is facilitated.

[0019] In order to more clearly set forth the structural features, technical means and the specific purposes and functions reached by the utility model, the utility model will be further described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the assembly structure schematic diagram of the embodiment of the utility model;

[0021] Figure 2 is the internal structure schematic diagram of the embodiment of the utility model;

[0022] Figure 3 is the fairing, wind scooper, fan assembly assembly schematic diagram of the embodiment of the utility model;

[0023] Figure 4 is the exploded schematic diagram of Figure 3 ;

[0024] Figure 5 is the main control circuit board, wind scooper, fan assembly assembly schematic diagram of the embodiment of the utility model;

[0025] Figure 6 is the cross section schematic diagram of Figure 5 .

[0026] EXPLANATION OF DRAWINGS:

[0027] 10-support, 11-housing, 12-air duct, 13-air inlet, 14-air outlet, 20-fan assembly, 21-motor, 22-impeller, 221-hub, 222-blade, 30-main control circuit board, 31-mounting hole, 40-wind scooper, 41-mounting portion, 42-air guiding hole, 43-connection hole, 44-positioning column, 45-groove, 46-air guiding plate, 461-extension portion, 47-positioning groove, 50-fairing, 51-positioning portion, 60-battery. DETAILED DESCRIPTION

[0028] In the description of the utility model, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the position or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation to the utility model.

[0029] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication. For ordinary skilled person in the art, the above-mentioned term can be understood as the specific meaning of the utility model according to the specific circumstances.

[0030] As Figures 1-6 The utility model discloses a neck-hung fan circuit board mounting structure, including the support 10 of wearable human neck, the support 10 has the casing 11 at human neck both sides, be equipped with air duct 12 and fan assembly 20 in the casing 11, the outer surface of casing 11 is equipped with the air inlet 13 and the air outlet 14 with air duct 12 intercommunication, fan assembly 20 has motor 21 and impeller 22, impeller 22 has the hub 221 and the several blades 222 that surround the outside of hub 221.

[0031] Be equipped with main control circuit board 30 in the casing 11 with motor 21 electricity is connected, main control circuit board 30 is located the side of motor 21 axial direction away from impeller 22, in the projection of main control circuit board 30 in air flow direction is located the diameter d range of hub 221, the thickness direction of main control circuit board 30 is parallel with the axial direction of motor 21, the thickness of main control circuit board 30 is defined as the spacing between the opposite two surfaces of main control circuit board 30 that can install component parts, by setting the thickness direction of main control circuit board 30 is parallel with the axial direction of motor 21, makes main control circuit board 30 and motor 21 along the minimum space occupation of air flow direction.

[0032] Be equipped with wind scooper 40 in the air duct 12, wind scooper 40 is connected with casing 11, be equipped with mounting portion 41 and several air guide holes 42 on wind scooper 40, several air guide holes 42 surround the outside of mounting portion 41, main control circuit board 30 and motor 21 are installed on mounting portion 41, the blade 222 drives air to pass through air guide hole 42, by setting wind scooper 40, setting mounting portion 41 on wind scooper 40, main control circuit board 30 and motor 21 are installed on mounting portion 41, make the compact mounting structure of main control circuit board and motor.

[0033] The air inlet 13 is located the extension tail end of casing 11, the motor 21 is installed on the side of mounting portion 41 close to the air inlet 13, the main control circuit board 30 is installed on the side of mounting portion 41 away from motor 21, by setting motor 21 and main control circuit board 30 on the opposite sides of mounting portion 41 respectively, thereby facilitating the independent installation and dismounting of motor 21 and main control circuit board 30, facilitate maintenance.

[0034] The mounting portion 41 is provided with a connecting hole 43, and the main control circuit board 30 is provided with a mounting hole 31, a screw passes through the mounting hole 31 and the connecting hole 43, so that the main control circuit board 30 is connected with the mounting frame; the screw connection is adopted, and the main control circuit board 30 is convenient to assemble and disassemble.

[0035] The mounting portion 41 is provided with a positioning column 44, and the main control circuit board 30 is provided with a positioning hole (not shown) for the positioning column 44 to extend into; through the positioning column 44 and the positioning hole, the position of the main control circuit board 30 is conveniently positioned, so as to facilitate assembly.

[0036] The mounting portion 41 is provided with a groove 45, and the groove 45 can be used for the components on the main control circuit board 30 to extend into.

[0037] The mounting portion 41 is connected with a fairing 50 away from the motor 21, the fairing 50 extends along the air flow direction, the main control circuit board 30 is located in the fairing 50, and the fairing 50 is provided with a battery 60 electrically connected with the main control circuit board 30; through the setting of the fairing 50, the fairing 50 plays a role in rectifying the wind in the air duct, avoids the generation of vortex, improves the air outlet efficiency and reduces the noise.

[0038] A plurality of air deflectors 46 are arranged on the circumferential outer side of the mounting portion 41, the air deflectors 46 are arranged on the circumferential outer side of the mounting portion 41, and the air deflectors 46 are arranged on the circumferential outer side of the mounting portion 41.

[0039] The fairing 50 is clamped with the mounting portion 41, the mounting portion 41 is circumferentially provided with a positioning groove 47, one end of the fairing 50 is provided with a positioning portion 51, and the positioning portion 51 is embedded in the positioning groove 47; through the clamping mode, the fairing 50 is conveniently connected with the mounting portion 41, the positioning groove 47 and the positioning portion 51 are arranged, and the fairing 50 is conveniently assembled to the mounting portion 41 through the cooperation of the positioning groove 47 and the positioning portion 51.

[0040] In summary, the main control circuit board 30 is arranged on the side of the motor 21 away from the impeller 22 in the axial direction, the projection of the main control circuit board 30 in the air flow direction is located within the diameter range of the hub 221, and the side of the motor 21 away from the impeller 22 in the axial direction is an invalid air outlet area.

[0041] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and thus any modification, equivalent replacement, improvement, etc. made to the above embodiments according to the technical spirit of the present application still falls within the scope of the technical scheme of the present application.

Claims

1. A neck-hanging fan circuit board mounting structure, comprising a support that can be worn on the neck of a human, the support having a housing located on both sides of the neck, the housing having an air duct, a fan assembly, and a main control circuit board inside, the outer surface of the housing having an air inlet and an air outlet communicating with the air duct, the fan assembly having a motor and an impeller, the impeller having a hub and a plurality of blades surrounding the outer side of the hub, characterized in that: The main control circuit board is located on the side of the motor away from the impeller in the axial direction, and the projection of the main control circuit board in the airflow direction is within the diameter range of the hub.

2. The neck fan circuit board mounting structure according to claim 1, characterized in that, The air duct is equipped with an air guide cover, which has a mounting part and several air guide holes. The air guide holes surround the outside of the mounting part. The main control circuit board and the motor are both mounted on the mounting part. The blades drive the air through the air guide holes.

3. The neck fan circuit board mounting structure according to claim 2, characterized in that, The motor is installed on the side of the mounting part closer to the air inlet, and the main control circuit board is installed on the side of the mounting part away from the motor.

4. The neck fan circuit board mounting structure according to claim 2, characterized in that, The mounting part is provided with a connection hole, and the main control circuit board is provided with a mounting hole. Screws pass through the mounting hole and the connection hole to connect the main control circuit board to the mounting bracket.

5. The neck fan circuit board mounting structure according to claim 2, characterized in that, The mounting part is provided with a positioning post, and the main control circuit board is provided with a positioning hole for the positioning post to extend into.

6. The neck fan circuit board mounting structure according to claim 2, characterized in that, The mounting part is provided with a groove, which allows components on the main control circuit board to extend into.

7. The neck fan circuit board mounting structure according to claim 2, characterized in that, A shroud is connected to the side of the mounting part away from the motor. The shroud extends along the direction of airflow, and the main control circuit board is located inside the shroud.

8. The neck fan circuit board mounting structure according to claim 7, characterized in that, The mounting part is provided with a plurality of air guide plates around its outer circumference, and the air guide hole is formed between two adjacent air guide plates. The air guide plates are provided with extensions extending in the direction of air flow, and the end of the fairing near the mounting part surrounds the inner side of the extension.

9. The neck fan circuit board mounting structure according to claim 7, characterized in that, The fairing is snapped into the mounting part, the mounting part is provided with a positioning groove on its circumferential outer wall, and one end of the fairing is provided with a positioning part, which is embedded in the positioning groove.

10. The neck fan circuit board mounting structure according to claim 1, characterized in that, The thickness direction of the main control circuit board is parallel to the axial direction of the motor.

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