CN218678628U

CN218678628U - Outer rotor brushless motor for floor fan and floor fan

Info

Publication number: CN218678628U
Application number: CN202222794100.9U
Authority: CN
Inventors: 罗丹; 胡洪武
Original assignee: Jiangmen Lusituo Motor Electric Appliance Co ltd
Current assignee: Jiangmen Lusituo Motor Electric Appliance Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-03-21
Anticipated expiration: 2032-10-21

Abstract

The utility model discloses an external rotor brushless motor for floor fan lies prone to open to have this an external rotor brushless motor for floor fan lies prone to open prone floor fan, wherein an external rotor brushless motor for floor fan lies prone to open prone is including linking to each other first casing and the second casing that forms the appearance chamber, and first casing is equipped with the through-hole that runs through, the through-hole encloses and is equipped with the sleeve, the sleeve wears to establish the rotor shaft. The first machine shell is provided with a stator core, the stator core comprises a plurality of stator slots which are uniformly connected to form an annular structure, and the center of the stator core is provided with a middle hole for the rotor shaft to pass through. The rotor shaft connecting structure is characterized in that a rotor casing is arranged in the accommodating cavity, the rotor casing is provided with a mounting groove and is used for being connected with the rotor shaft connecting portion, a magnetic ring is sleeved on the peripheral wall of the stator core, and the stator core is matched with the magnetic ring and clamped in the mounting groove. The electric appliance box is arranged outside the accommodating cavity, a PCB circuit board and a controller are arranged in the electric appliance box, and the electric appliance box is electrically connected with the stator core through a lead.

Description

Outer rotor brushless motor for floor fan and floor fan

Technical Field

The utility model relates to the technical field of electric machines, in particular to an external rotor brushless motor for lying prone floor fan and the floor fan of lying prone.

Background

In the related art, in order to save cost, the floor fan is generally provided with a capacitor motor, but the floor fan with large fan blades needs a large-size capacitor motor for ensuring power, so that the floor fan is large in size and not beneficial to use. The existing floor fan motor that crouches that can drive the large-size flabellum generally uses brushless motor, and this type of brushless motor's inner rotor iron core is with high costs, but does not have supporting outer rotor iron core structure, is unfavorable for production, also can't satisfy user's user demand.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an external rotor brushless motor for lying prone floor fan.

The utility model discloses still provide a floor fan of lying prone of outer rotor brushless motor who is used for the floor fan of lying prone of the aforesaid.

According to the utility model discloses an external rotor brushless motor for floor fan of lying prone of first aspect embodiment, including first casing, be equipped with the through-hole that runs through, the through-hole encloses and is equipped with the sleeve. And the second machine shell is connected with the first machine shell and forms a cavity. A rotor shaft disposed through the sleeve. And the stator core is connected with the first machine shell and comprises a plurality of stator slots which are uniformly connected to form an annular structure, and a middle hole is formed in the center of the stator core for the rotor shaft to pass through. The rotor shell is located in the containing cavity and provided with a mounting groove and a connecting portion used for being connected with the rotor shaft, the peripheral wall of the stator core is sleeved with a magnetic ring, and the stator core is matched with the magnetic ring and clamped in the mounting groove. And the electrical box is arranged outside the accommodating cavity, a PCB (printed circuit board) and a controller are arranged in the electrical box, and the electrical box is electrically connected with the stator core through a lead.

According to the utility model discloses an external rotor brushless motor for lying prone floor fan has following beneficial effect at least:

according to some embodiments of the utility model, stator core includes a plurality of wire winding stem stems, the wire winding stem is the T type, two the wire winding stem forms the stator slot.

According to some embodiments of the invention, the winding stem is provided with 12, 12 the winding stem forms 12 the stator slots.

According to the utility model discloses a some embodiments, connecting portion are including the bearing frame, the inside wall of bearing frame is equipped with the globular grain of riveting, the rotor shaft peg graft in the bearing frame passes through the globular grain of riveting is fastened.

According to some embodiments of the invention, the outer diameter of the stator core is 8.8cm, and the inner diameter of the central bore is 2.4cm.

According to the utility model discloses a some embodiments, the edge of first casing the edge of second casing all is equipped with the sideboard, be equipped with the fixed orifices that runs through on the sideboard, the fastener is worn to be equipped with by the fixed orifices, first casing with the second casing passes through the fastener links to each other.

According to some embodiments of the utility model, the sideboard is equipped with the first line hole of crossing that runs through, first casing is equipped with the second and crosses the line hole, the lead wire of stator passes first line hole with the second crosses the line hole, in order to connect in the electrical apparatus box.

According to the utility model discloses a some embodiments, the outer wall connection of electrical apparatus box has the display screen, the controller with display screen electric connection.

According to some embodiments of the invention, the second housing is a polypropylene plastic.

According to the utility model discloses a floor fan of lying prone of second aspect embodiment, including above arbitrary the external rotor brushless motor that is used for floor fan of lying prone.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

fig. 1 is an explosion schematic diagram of an external rotor brushless motor for a floor fan according to an embodiment of the present invention;

fig. 2 is a schematic view of a stator core of the outer rotor brushless motor for the floor fan shown in fig. 1;

fig. 3 is a schematic view of a first casing of the outer rotor brushless motor for the groveling fan shown in fig. 1;

fig. 4 is a schematic view of a second casing of the outer rotor brushless motor for the groveling fan shown in fig. 1;

fig. 5 is a schematic view of a rotor case of the outer rotor brushless motor for the floor fan shown in fig. 1.

Reference numerals: a first housing 100; a side plate 101; a rotor shaft 110; a magnetic ring 120; a stator core 130; stator slots 131; a winding stem 132; a central bore 133; a second chassis 200; a wire passing hole 201; a rotor case 300; a connecting portion 310; a bearing housing 311; an appliance case 400; and (3) a lead 401.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

For this reason, refer to fig. 1, the utility model provides an external rotor brushless motor for lying prone floor fan, including linking to each other and forming first casing 100 and the second casing 200 that holds the chamber, first casing 100 is equipped with the through-hole that runs through, and the through-hole encloses and is equipped with the sleeve, and rotor shaft 110 is worn to establish by the sleeve. First housing 100 is provided with a stator core 130. The stator core 130 includes a plurality of stator slots 131 uniformly connected to form a ring structure, and a central hole 133 is formed at the center of the stator core 130 for the rotor shaft 110 to pass through. The rotor case 300 is arranged in the accommodating cavity, the rotor case 300 is provided with a mounting groove and a connecting portion 310 used for connecting the rotor shaft 110, the circumferential wall of the stator core 130 is sleeved with the magnetic ring 120, and the stator core 130 is matched with the magnetic ring 120 and clamped in the mounting groove. The motor stator further comprises an electrical box 400 which is arranged outside the accommodating cavity, a PCB circuit board and a controller are arranged in the electrical box 400, and the electrical box 400 is electrically connected with the stator core 130 through a lead 401.

Referring to fig. 1, 2, 3, 4 and 5, the first housing 100 and the second housing 200 cooperate to form a cavity for installing other components, when assembling, the rotor shaft 110 passes through the central hole 133 of the stator core 130, the rotor housing 300 is embedded in the first housing 100, the end of the rotor shaft 110 near one side of the stator core 130 is connected with the connecting portion 310, the stator slot 131 on the stator core 130 accommodates a coil, the outer circumference of the stator core 130 is sleeved with the magnetic ring 120, and finally, the rotor housing 300 is clamped. Referring to fig. 5, it can be understood that the rotor case 300 has a main body shape, and the inner diameter of the rotor case decreases gradually from the connection portion 310 to the other side to form a step, the stator core 130 is assembled on the step of the rotor case 300 near the stator core 130 in cooperation with the magnetic ring 120, and the connection portion 310 is located on the inner wall of the top cover of the case and on the other step with a narrower inner diameter, so as to reduce the size of the whole motor to the maximum. This application so designs an external rotor brushless motor and is used for the floor fan of lying prone, can accomplish the characteristics of small volume high performance, and then can satisfy the brushless motor's of jumbo size flabellum power demand, satisfies user's user demand. It is understood that the stator core 130 has an outer diameter of 8.8cm and the center hole 133 has an inner diameter of 2.4cm, thereby facilitating the installation of other members such as the rotor shaft 110.

Referring to fig. 1, 2, 3, 4 and 5, it will be appreciated that the electrical enclosure 400 is used to mount electrical components including PCB circuit boards, controllers, leads 401, and the like. In the correlation technique, electrical components such as PCB circuit board all set up in holding the intracavity, and lie prone ground fan brushless motor and fold motor part and require the casing to be the complete closure state. The heat generated along with the operation of the motor cannot be removed, thereby causing the damage of electrical components. And set up electrical apparatus box 400 outside holding the chamber, can ensure that electrical components are not influenced by the heat that the motor operation produced, improved the life of motor to can further reduce the holistic volume of motor, and then convenient assembly saves the cost. On the other hand, it can be understood that the edge of the first housing 100 and the edge of the second housing 200 are both provided with the edge plate 101, the edge plate 101 is provided with a through fixing hole, a fastening member is arranged in the fixing hole, and the first housing 100 and the second housing 200 are connected through the fastening member. The side plate 101 is provided with a first wire passing hole 201, the first casing 100 is provided with a second wire passing hole 201, and a lead 401 of the stator passes through the first wire passing hole 201 and the second wire passing hole 201 to be connected to the electrical box 400. The electrical box 400 may be fixed to the side plate 101 by a fastener, thereby simplifying the overall installation of the motor and facilitating the production. It can be understood that electrical apparatus box 400 is the metalwork, can discharge the heat that electrical apparatus component gived off through metal heat conduction to the motor is installed and is being lain forward the body in the ground, and the ground fan that lies prone also can drive certain amount of wind and dispel the heat to electrical apparatus box 400 surface when moving, further improves life.

Referring to fig. 1, 2, 3, 4 and 5, it can be understood that the stator core 130 includes a plurality of winding legs 132, the winding legs 132 are T-shaped, and two winding legs 132 form the stator slot 131, and it can be understood that the T-shaped winding legs 132 can further facilitate the step of winding the coil, thereby facilitating the production of the stator core 130. Preferably, the winding core column 132 is provided with 12 winding core columns 132, and 12 winding core columns 132 form 12 stator slots 131 to ensure the performance of the electronic assembly.

Referring to fig. 1, 2, 3, 4 and 5, it can be understood that the connection portion 310 includes a bearing seat 311, the inner sidewall of the bearing seat 311 is provided with spherical rivet, and the rotor shaft 110 is inserted into the bearing seat 311 and fastened by the spherical rivet. The rotor shaft 110 is matched with the rotor case 300 by adopting a spherical riveting grain structure, namely, an iron spherical riveting grain is pressed into the position of the bearing seat 311 in the rotor case 300 for tight fit, and the rotor shaft 110 is pressed and tightened from the center of the spherical riveting grain when being inserted, so that tight fit is realized, and the installation steps are further simplified.

Referring to fig. 1, it can be understood that a display screen is connected to an outer wall of the electrical box 400, and the controller is electrically connected to the display screen. The display screen and the controller are also arranged in the electric appliance box 400, the controller is provided with a switch and a timing function, the display screen can display the rotating speed of the current gear and the timing time, and the functions can meet the requirement of daily use

Referring to fig. 1 and 3, it can be understood that the second housing 200 is a polypropylene plastic. After the assembly is completed, the second housing 200 is not a stressed part, the production cost can be reduced by making the second housing from polypropylene plastic, and the polypropylene material has the characteristics of high strength and high heat resistance, so that the use requirement of the motor can be met.

The utility model discloses still provide a brushless motor of the external rotor brushless motor who is used for lying prone floor fan of having the aforesaid.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. The utility model provides an outer rotor brushless motor for lying prone floor fan which characterized in that includes:

the first shell is provided with a through hole, and a sleeve is surrounded by the through hole;

the second machine shell is connected with the first machine shell and forms a cavity;

a rotor shaft disposed through the sleeve;

the stator core is connected to the first shell and comprises a plurality of stator slots which are uniformly connected to form an annular structure, and a middle hole is formed in the center of the stator core and used for the rotor shaft to pass through;

the rotor shell is positioned in the accommodating cavity, the rotor shell is provided with a mounting groove and a connecting part for connecting the rotor shaft, the peripheral wall of the stator core is sleeved with a magnetic ring, and the stator core is matched with the magnetic ring and clamped in the mounting groove;

and the electrical box is arranged outside the accommodating cavity, a PCB (printed circuit board) and a controller are arranged in the electrical box, and the electrical box is electrically connected with the stator core through a lead.

2. The external rotor brushless motor for a floor fan of claim 1, wherein the stator core comprises a plurality of winding core legs, the winding core legs are T-shaped, and two winding core legs form the stator slots.

3. The external rotor brushless motor for the floor fan of claim 2, wherein 12 winding core columns are provided, and 12 winding core columns form 12 stator slots.

4. The outer rotor brushless motor for the floor fan of claim 1, wherein the connecting portion includes a bearing seat, spherical rivet particles are disposed on an inner side wall of the bearing seat, and the rotor shaft is inserted into the bearing seat and fastened through the spherical rivet particles.

5. The outer rotor brushless motor for a floor fan of claim 1, wherein the outer diameter of the stator core is 8.8cm, and the inner diameter of the central hole is 2.4cm.

6. The outer rotor brushless motor for a floor fan of claim 1, wherein the edge of the first housing and the edge of the second housing are both provided with side plates, the side plates are provided with fixing holes penetrating through, fasteners are arranged in the fixing holes in a penetrating manner, and the first housing and the second housing are connected through the fasteners.

7. The outer rotor brushless motor for the floor fan of claim 6, wherein the sideboard is provided with a first wire passing hole therethrough, the first housing is provided with a second wire passing hole, and a lead of the stator passes through the first wire passing hole and the second wire passing hole to connect to the electrical box.

8. The outer rotor brushless motor for the floor fan of claim 1, wherein a display screen is connected to the outer wall of the electrical box, and the controller is electrically connected to the display screen.

9. The external rotor brushless motor for a floor fan of claim 1, wherein the second housing is made of polypropylene plastic.

10. A floor fan standing prone, which comprises the external rotor brushless motor for a floor fan standing prone according to any one of claims 1 to 9.