CN220896405U - Outer rotor high-speed blower motor adopting novel PCBA assembly structure - Google Patents

Abstract

The utility model provides an outer rotor high-speed blower motor adopting a novel PCBA assembly structure, which comprises a rotor assembly, a stator assembly, a control device, a duct shell and a rotating shaft, wherein the duct shell comprises an inner shell and an outer shell, the inner shell is divided into a first inner shell and a second inner shell by a radial plane division plate, one or more through holes are formed in the division plate, the stator assembly is arranged in the first inner shell, the control device is fixedly connected with a boss of the second inner shell through a buckle structure, the control device is provided with an interface for connecting a lead wire of the stator assembly, the integrated design of the control device and the motor is adopted, a flow guide mechanism is arranged around the control device, the control device has the advantages of long service life, strong work electromagnetic interference resistance, compact structure, convenience in assembly production, production efficiency improvement and production cost saving, and the like.

Description

Outer rotor high-speed blower motor adopting novel PCBA assembly structure

Technical Field

The utility model relates to the field of high-speed blower motors, in particular to an outer rotor high-speed blower motor adopting a novel PCBA assembly structure.

Background

The blower and dust collector, such as electric hair drier, bladeless fan, negative pressure dust collector, hand drier, bathroom drier, etc. need to use the motor, because the high-speed motor of external rotor is small in axial dimension, the focus is low, the system stability is better than the inner rotor motor, the duty ratio of the high-speed motor of external rotor is promoted step by step. Because the outer rotor motor is small in size, the stator does not have space for fixing PCBA, in the prior art, the control device (PCBA) of the outer rotor motor is assembled by adopting a stator wire frame fixing mode or a mode of fixing PCBA on an end cover by adopting a screw, and the mode of fixing the external PCBA on the wire frame is not compact in structure and not beneficial to product miniaturization, and the stator lead is easy to be subjected to electromagnetic interference of other components and parts, so that the motor cannot work normally due to waveform distortion of detection signals; for the mode of screw fixation on the end cover, the end cover process requires extremely high flatness, otherwise, when in fixation, uneven stress of the PCBA leads to deformation of components of the PCBA, loosening of welding spots and damage caused by poor contact.

Disclosure of utility model

In order to overcome the defects and shortcomings of the prior art, the utility model provides an outer rotor high-speed blower motor adopting a novel PCBA assembly structure, which solves the technical problems of the prior art that the PCBA assembly of the high-speed blower motor is not compact in structure, easy to be subjected to electromagnetic interference, and high in production cost and low in production efficiency caused by high technological requirements on installation positions.

The utility model realizes the aim through the following technical scheme: the utility model provides an adopt novel PCBA assembly structure's external rotor high-speed hair-dryer motor, includes rotor subassembly, stator module, controlling means and duct casing, the axis of rotation, the duct casing includes inner shell and shell, the inner shell is divided into first inner shell and second inner shell by radial planar division board, there is one or more through-hole on the division board, stator module arranges in the first inner shell, controlling means with the boss fixed connection of second inner shell, controlling means has the interface.

Preferably, the fan further comprises a flow guiding mechanism and a fan blade, wherein the flow guiding mechanism is arranged between the inner shell and the outer shell, and the fan blade is arranged in the first inner shell.

Preferably, the flow guiding mechanism is a stator blade designed by adopting an Archimedes spiral line.

Preferably, the diversion mechanism is arranged around the control device.

Preferably, the lead wire of the stator assembly is communicated with the interface through the through hole for connecting the stator assembly with the control device.

Preferably, the boss is fixedly connected with the control device through a buckle.

Preferably, the inner housing is provided with at least two bearing chambers for placing bearings of the rotating shaft.

Preferably, the rotating shaft is an optical axis, and the optical axis is provided with a limiting piece matched with the optical axis for preventing axial movement of the rotating shaft.

Preferably, the limiting piece is a plum blossom meson.

Preferably, the rotor assembly includes a rotor magnet and a rotor housing.

Compared with the prior art, the utility model has the beneficial effects that:

The control device (PCBA) is integrally designed with the motor, the control device is connected with the boss of the inner shell of the duct shell through the buckle, the control device is provided with the interface, the control device is connected with the stator assembly through the interface, and the diversion mechanism is arranged around the control device, so that the technical problems that the structure is not compact, the product is not beneficial to miniaturization, the stator leads are easy to be subjected to electromagnetic interference of other components, the motor cannot work normally, the end cover is fixed by screws, the end cover process requires extremely high flatness, otherwise, when the end cover is fixed, the PCBA is stressed unevenly, the PCBA is deformed, the welding spot is loose, and the technical problem of damage caused by poor contact are solved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 shows an explosion diagram of an outer rotor high-speed blower motor adopting a novel PCBA assembly structure.

Fig. 2 shows an isometric view of a duct housing of an outer rotor high-speed blower motor employing a novel PCBA assembly structure of the present utility model.

Fig. 3 shows a PCBA schematic diagram of an external rotor high speed blower motor employing a novel PCBA assembly structure according to the present utility model.

Reference numerals: 1-a rotor assembly; 11-rotor magnet; 12-a rotor housing; a 2-stator assembly; 3-a control device; 4-duct housing; 41-an inner shell; 411-a first inner shell; 412-a second inner housing; 42-a housing; 5-a flow guiding mechanism; 6-rotating shaft; 7-limiting pieces; 8-interface; 9-dividing plates; 91-via.

Detailed Description

The present utility model will be further described with reference to the drawings and detailed description, wherein the described embodiments are only some, but not all, of the embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 3, an external rotor high-speed blower motor adopting a novel PCBA assembly structure comprises a rotor assembly 1, a stator assembly 2, a control device 3, a duct casing 4 and a rotating shaft 6, wherein the rotor assembly 1 comprises a rotor magnet 11 and a rotor outer casing 12, the duct casing 4 comprises an inner casing 41 and an outer casing 42, the inner casing 41 is divided into a first inner casing 411 and a second inner casing 412 by a radial plane partition plate 9, one or more through holes 91 are formed in the partition plate 9, the stator assembly 2 is arranged in the first inner casing 411, the control device 3 and a boss of the second inner casing 412 are fixedly connected through a buckle structure, the control device 3 is provided with an interface 8, and a lead wire of the stator assembly 2 is communicated with the interface 8 through the through holes 91 and is used for signal connection of the stator assembly 2 and the control device 3.

Further, the novel air conditioner further comprises a flow guiding mechanism 5 and fan blades, the flow guiding mechanism 5 is arranged between the inner shell 41 and the outer shell 42, the fan blades are arranged in the first inner shell 411, the flow guiding mechanism 5 is a static blade designed by adopting an Archimedean spiral line, one side of the flow guiding mechanism 5 is connected with the inner shell 41, the other side of the flow guiding mechanism 5 is connected with the outer shell 42, the novel air conditioner also has the functions of flow guiding and structural reinforcing ribs in a duct, the flow guiding mechanism 5 is arranged around the control device 3, and when the novel air conditioner works, flowing wind has a cooling effect on the control device 3, so that the service life of the control device 3 is prolonged.

Further, the inner housing 41 is provided with at least two bearing chambers for placing the bearings of the rotating shaft 6, so as to ensure that the concentricity of the stator assembly 2 and the rotor assembly 1 meets the precision requirement.

Further, the rotating shaft 6 is an optical axis, the optical axis is provided with a limiting piece 7 matched with the optical axis, the limiting piece 7 is a plum blossom meson, and the limiting piece is used for preventing the axial movement of the rotating shaft.

The foregoing list is only illustrative of specific embodiments of the utility model. It is obvious that the utility model is not limited to the above embodiments, but that many similar modifications are possible, all modifications which can be directly derived or suggested to a person skilled in the art from the disclosure of the utility model are to be considered as the scope of the utility model as claimed.

Claims (10)

1. The utility model provides an adopt novel PCBA assembly structure's high-speed hair-dryer motor of external rotor, includes rotor subassembly (1), stator module (2), controlling means (3) and duct casing (4), axis of rotation (6), its characterized in that, duct casing (4) are including inner shell (41) and shell (42), inner shell (41) are divided into first inner shell (411) and second inner shell (412) by radial planar division board (9), there are one or more through-hole (91) on division board (9), stator module (2) are arranged in first inner shell (411), controlling means (3) with boss fixed connection of second inner shell (412), controlling means (3) have interface (8).

2. The outer rotor high-speed blower motor adopting the novel PCBA assembly structure as recited in claim 1, further comprising a flow guiding mechanism (5) and a fan blade, wherein the flow guiding mechanism (5) is arranged between the inner shell (41) and the outer shell (42), and the fan blade is arranged in the first inner shell (411).

3. An outer rotor high-speed blower motor adopting a novel PCBA assembly structure as claimed in claim 2, wherein the flow guiding mechanism (5) is a stator blade adopting an archimedes spiral design.

4. An outer rotor high speed blower motor employing a novel PCBA assembly structure as claimed in claim 2, wherein the deflector mechanism (5) is provided around the control device (3).

5. An external rotor high-speed blower motor adopting a novel PCBA assembly structure according to claim 1, characterized in that the leads of the stator assembly (2) are conducted with the interface (8) through the through holes (91) for connection of the stator assembly (2) with the control device (3).

6. An outer rotor high-speed blower motor adopting a novel PCBA assembly structure as in claim 1, wherein the boss is fixedly connected with the control device (3) through a buckle.

7. An external rotor high speed blower motor employing a novel PCBA assembly structure as claimed in claim 1, characterized in that the inner housing (41) is provided with at least two bearing chambers for placing bearings of the rotating shaft (6).

8. An outer rotor high-speed blower motor adopting a novel PCBA assembly structure as claimed in claim 1, wherein the rotating shaft (6) is an optical axis, and a limiting piece (7) is arranged on the optical axis and matched with the optical axis for preventing axial movement of the rotating shaft.

9. An outer rotor high-speed blower motor adopting a novel PCBA assembly structure as in claim 8, wherein the limiting element (7) is a quincuncial meson.

10. An outer rotor high speed blower motor employing a novel PCBA assembly structure as claimed in claim 1, wherein the rotor assembly (1) comprises a rotor magnet (11) and a rotor housing (12).