CN216959443U

CN216959443U - Motor and air discharge fan

Info

Publication number: CN216959443U
Application number: CN202220372181.0U
Authority: CN
Inventors: 罗丹; 石秋; 胡洪武
Original assignee: Jiangmen Lusituo Motor Electric Appliance Co ltd
Current assignee: Jiangmen Lusituo Motor Electric Appliance Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-07-12
Anticipated expiration: 2032-02-23

Abstract

The utility model provides a motor and an exhaust fan, which comprise a rotor shell, a stator component and a stator base, wherein the stator component comprises a stator core and a stator core; wherein, the bottom of the base is provided with a wiring opening; a hollow tube is arranged in the center of the inside of the base, protruding seats are arranged on two sides of the hollow tube in the base, and containing cavities are arranged on two sides of each protruding seat; the stator assembly comprises a PCB board, the PCB board comprises electronic elements, the electronic elements are placed in the accommodating cavity, through holes used for being sleeved with the hollow pipes are formed in the middle of the PCB board, and the electronic elements are placed on the convex seats. The base of the motor provided by the utility model is provided with the protruding seat structure, a PCB with large-volume electronic elements can be accommodated, and the rotor end cover and the stator base of the motor are properly changed on the premise of meeting the installation size of the original motor, so that the electronic elements with enlarged volume are adapted.

Description

Motor and air discharge fan

Technical Field

The utility model relates to the technical field of motors, in particular to a motor and an exhaust fan.

Background

At present, brushless motors are mainly sold in China, and because the national power grid can provide stable voltage, the domestic brushless motors do not have the need of IEC test. Along with the economic development, domestic brushless motors are exported outwards, the voltage fluctuation of the domestic brushless motors is larger than that of the domestic brushless motors, and if the domestic brushless motors are not tested by IEC, the brushless motors are extremely easy to burn out under the influence of the voltage fluctuation.

Based on this, can make brushless motor pass IEC test in current brushless motor inner assembly through increasing the electronic component that can pass IEC test. However, the size of the components in the brushless motor is increased, and the existing brushless motor structure cannot be provided with the increased components and causes other operation problems of the brushless motor.

SUMMERY OF THE UTILITY MODEL

The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

The embodiment of the utility model provides a motor and an exhaust fan, and aims to provide a motor, wherein the internal structure of a motor stator base of the brushless motor is improved, and the motor can accommodate electronic elements which can be subjected to IEC (International electrotechnical Commission) test through the improved internal structure of the stator base, so that the motor can accommodate large-volume electronic elements which can be subjected to the IEC test.

In a first aspect, an embodiment of the present invention provides an electric machine, including a rotor housing, a stator assembly, and a stator base;

the stator comprises a stator base and a stator core, wherein the bottom of the stator base is provided with a wiring opening, a hollow pipe is arranged at the central position inside the stator base, two sides of the hollow pipe are provided with convex seats, and two sides of each convex seat are provided with accommodating cavities;

the stator assembly is arranged between the stator base and the rotor shell, wherein the stator assembly is provided with an electronic element, and the electronic element is placed in the containing cavity.

According to some embodiments of the utility model, the boss is internally provided with a stud for fixing the stator base.

According to some embodiments of the present invention, the trace outlet is disposed at one side of the protrusion seat.

According to some embodiments of the utility model, the stator assembly is further provided with a lead wire, and the lead wire is arranged through the routing opening.

According to some embodiments of the utility model, the protrusion base comprises two sub protrusion bases, and the two sub protrusion bases are symmetrically arranged on two sides of the hollow tube.

According to some embodiments of the utility model, the boss is integrally formed with the hollow tube.

According to some embodiments of the utility model, the motor further comprises a shaft core, and the rotor housing comprises a shaft core through hole, and the shaft core is arranged through the rotor housing through the shaft core through hole.

According to some embodiments of the utility model, the electric machine further comprises a magnetic ring disposed inside the rotor housing.

According to some embodiments of the utility model, the electric machine further comprises a gasket disposed at the opening of the hollow tube, an oil seal cap, an oil-impregnated bearing disposed inside the hollow tube, and a retaining ring disposed inside the hollow tube; the bottom of the stator base is provided with a communicating hole, and the oil seal cover is arranged at an opening of the communicating hole.

Second aspect embodiments of the present invention provide an exhaust fan comprising an electric motor as set forth in the first aspect.

The embodiment of the utility model comprises the following steps: the utility model provides a motor and an exhaust fan, and the motor provided by the utility model is arranged in the exhaust fan, so that the exhaust fan can have the function of IEC test. The stator base of the motor is provided with a convex seat, the stator elements are placed on the convex seat, and the stator elements added with the electronic elements are placed in a cavity formed by the convex seat, so that the storage effect is achieved. The base has the advantages that the accommodating capacity of the base is improved by adding the convex seats to the base, the motor is guaranteed to be capable of accommodating large-size electronic components, and the exhaust fan is enabled to have stable pressure and overcurrent capacity.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

Fig. 1 is an exploded view of an overall structure of an external rotor brushless motor capable of being subjected to IEC testing;

FIG. 2a is a longitudinal cross-sectional view of a stator base;

FIG. 2b is a bottom view of the stator base;

FIG. 2c is a schematic view of a stator base;

FIG. 3a is a front view of a stator assembly;

FIG. 3b is a schematic top view of the PCB;

FIG. 4a is a longitudinal cross-sectional view of the rotor housing;

fig. 4b is a schematic view of a rotor housing.

Reference numerals:

stator base 100, hollow tube 101, wiring opening 102, communication hole 103, stator base opening 104, symmetrical raised base 105,

An arc-shaped base 106, a containing cavity 107, a nut 108, a hollow tube opening 109,

Stator assembly 200, through hole 201, bobbin 202, enameled wire 203, lead wire 204, electronic component 205, PCB 206,

A rotor housing 300, a shaft core through hole 301, an inner boss 302,

A magnetic ring 400,

A shaft core 500,

An oil-retaining bearing 600,

A retaining ring 700,

A gasket 800,

The oil seal cover 900.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the utility model.

It should be understood that in the description of the embodiments of the present invention, if there is any description of "first", "second", etc., it is only for the purpose of distinguishing technical features, and it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features. "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, and means that there may be three relationships, for example, a and/or B, and may mean that a exists alone, a and B exist simultaneously, and B exists alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" and similar expressions refer to any group of items, including any group of singular or plural items. For example, at least one of a, b, and c may represent: a, b, c, a and b, a and c, b and c, or a and b and c, wherein a, b and c can be single or multiple.

In the description of the embodiments of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention be necessarily constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

An external rotor brushless motor capable of passing through IEC provided by the embodiment of the utility model is described below with reference to the accompanying drawings.

The brushless motor provided by the embodiment of the utility model comprises a rotor shell 300, a stator assembly 200, a stator base 100, a gasket 800, an oil seal cover 900, a magnetic ring 400, an oil-containing bearing 600, a shaft core 500 and a retaining ring 700.

Referring to fig. 1, 2a to 2c, the stator base 100 of the brushless motor is in a cylindrical shape. The edge of the whole bottom of the stator bottom 100 is provided with a 45-degree chamfer; the hollow tube 101 is arranged inside the stator base 100, a communication hole 103 is formed from the hollow part inside the hollow tube 101 to the stator base 100, the hollow tube 101 can be used for placing other components of the brushless motor, such as an oil bearing 600 and the like for example, the shaft core 500 can penetrate through the hollow tube 101, and the hollow tube 101 can also provide a limit for the installation of the stator assembly 200. Two sub-convex seats are arranged in the stator base 100, the two sub-convex seats form a convex seat 105 and are symmetrically attached to two ends of the hollow pipe 101 to be integrally formed; studs 108 are molded into the interior of each side of the boss 105, and the studs 108 provide mounting locations for external screw mounting. The raised seat 105 is used for placing the stator assembly 200, and when the stator assembly is placed inside the stator base 100 through the outside of the hollow tube 101, the raised seat 105 can play a role of stopping the stator assembly. One side of the protruding base 105 is provided with a trace opening 102 at the bottom of the stator base 100 for leading out a lead 204 from the inside of the motor. The stator base 100 also has an arc base 106, and the arc base 106 can provide support for mounting of the motor exhaust fan.

As shown in fig. 2a, the raised seat 105 is formed with a certain height from the bottom of the stator base 100, so that a certain receiving cavity 107 is formed, and the increased IEC-capable electronic components are disposed in the receiving cavity 107.

Please refer to fig. 3a and fig. 3b, wherein fig. 3b is a schematic top view of a PCB, without showing other conventional components. The stator assembly 200 comprises a bobbin 202, an enameled wire 203, a lead 204, an electronic component 205 and a PCB 206. The PCB 206 is provided with a through hole 201, and the PCB 206 can be sleeved in the hollow pipe 101 through the through hole 201. The electronic component 205 is packaged on the surface of the PCB 206, the back of the surface of the electronic component 205 is provided with the bobbin 202, the bobbin 202 is wound with the enameled wire 203, the bobbin 202 and the enameled wire 203 jointly form a magnetic pole, when the brushless motor is powered on, the combined structure of the bobbin 202 and the enameled wire 203 can generate a magnetic field with a certain direction according to the ampere rule, which is equivalent to a stator part in the motor, and drives the rotor to rotate.

Illustratively, the electronic component 205 has an IEC testing function, and may be a transformer and/or a large number of electronic components such as capacitors and/or resistors.

Because the electronic component 205 has the function of IEC test, the volume of the electronic component 205 is larger than that of a common electronic component, when the brushless motor is assembled, the stator assembly 200 is placed in the stator base, when the electronic component 205 is placed in the base along with the stator assembly 200, the electronic component is placed in the accommodating cavity 107, the PCB 206 is accommodated in the stator base 100 except for the bobbin 202 and the enameled wire 203, and does not exceed the stator base opening 104, so that the rotor housing 300 can cover the stator base opening 104.

Make this brushless motor possess the function of IEC through increasing electronic component, the rethread increases the protruding seat of symmetry, suitably utilizes stator base space, improves the utilization ratio of inner space, makes the bulky electronic component of increase can be held by the stator base after improving, makes the motor can hold the PCB board of increase volume.

Referring to fig. 4a and 4b, the rotor housing 300 has a shaft core through hole 301, and the rotor housing 300 has an inner boss 302 therein communicating with the shaft core through hole 301. The shaft core 500 is inserted through the shaft core through hole 301 and protrudes from the rotor housing 300, and the protruding portion of the shaft core 500 is used for dragging a load. The rotor housing 300 is provided with a magnetic ring 400 inside, and the magnetic ring 400 is in a hollow cylindrical shape, and the hollow portion is used for accommodating a stator formed by the wire frame 202 and the enameled wire 203.

Referring to fig. 1, the motor includes a spacer 800, and a spacer through hole (not shown) is formed in the middle of the spacer 800. When the assembly is assembled and the shaft core 500 is required to be inserted, the gasket through hole of the gasket 800 is required to be inserted into the shaft core 500, and then the gasket 800 is arranged at the hollow tube opening 109 and seals the hollow tube opening 109 when the shaft core 500 is pressed into the hollow tube. When the gasket 800 closes the hollow pipe opening 109, the bearing 600 is isolated from the inner boss 302, the bearing 600 is prevented from directly contacting the inner boss 302, and the friction noise generated when the motor operates due to the direct contact between the bearing 600 and the inner boss 302 is reduced.

The motor further comprises an oil bearing 600, wherein the oil bearing 600 is in a hollow cylindrical shape, the hollow part provides a penetrating space for the shaft core 500, and the shaft core 500 is tightly attached to the hollow part to form a whole after penetrating through the hollow part of the oil bearing 600. When the rotor rotates, the shaft core 500 drives the inside of the oil-containing bearing 600 to rotate relatively due to the close fit with the hollow part, the oil-containing bearing 600 provides lubrication for the rotation of the shaft core 500, the rotation friction is reduced, and the motor can drag more loads.

The motor also includes a retaining ring 700. When the motor is assembled, the retaining ring 700 is also required to be buckled at the tail part of the shaft core 500. When the rotor housing 300 covers the stator base opening 104, the shaft core 500 is also inserted into the oil-retaining bearing 600, and the tail of the shaft core 500 closely attached to the inside of the oil-retaining bearing 600 is also placed inside the hollow tube 101 and positioned at the bottom of the stator base 100, and in this state, the retaining ring 700 is engaged with the tail of the shaft core 500 from the communication hole 103 to the inside of the hollow tube 101 and is disposed inside the hollow tube 101. The retaining ring 700 is used for buckling the tail of the shaft core 500, so that the shaft core 500 can be stopped, and the micro displacement generated when the shaft core 500 rotates is reduced.

When the motor is assembled to the last step, the oil seal cover 900 is required to seal the communication hole 103, and at this time, the oil seal cover 900 covers the opening of the communication hole 103 to stop the retaining ring 700 and also seals the hollow pipe 101 together with the gasket 800. The use of the oil seal cover 900 avoids that the oil smeared during the motor assembly is leaked through the communicating hole 103 after the assembly is completed, ensures that the inside is sealed and oil-tight during the motor operation, ensures that enough oil is available to reduce the rotation friction of the shaft core 500, and simultaneously avoids the equipment operation problem caused by the leakage of the motor oil of the equipment for installing the motor.

The embodiment of the utility model also provides the exhaust fan, the driving motor arranged in the exhaust fan is the motor provided by the embodiment, and the exhaust fan can pass the IEC test.

In the above embodiments, the descriptions of the respective embodiments are focused, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in detail in a certain embodiment.

Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and those skilled in the art will appreciate that the present invention is not limited thereto. Under the shared conditions, various equivalent modifications or substitutions can be made, and the equivalent modifications or substitutions are included in the scope of the utility model defined by the claims.

Claims

1. The motor is characterized by comprising a rotor shell, a stator assembly and a stator base;

the bottom of the stator base is provided with a wiring opening, a hollow pipe is arranged at the center position in the stator base, two sides of the hollow pipe are provided with convex seats, and two sides of each convex seat are provided with containing cavities;

2. The motor of claim 1, wherein a stud for fixing the stator base is arranged inside the boss.

3. The motor of claim 1 or 2, wherein the routing opening is disposed at one side of the raised seat.

4. The motor as claimed in claim 1 or 2, wherein the stator assembly is further provided with leads, and the leads are inserted into the routing openings.

5. The motor as claimed in claim 1 or 2, wherein the protrusion seat comprises two sub protrusion seats, and the two sub protrusion seats are symmetrically arranged on two sides of the hollow pipe.

6. The motor of claim 1 or 2, wherein the boss is integrally formed with the hollow tube.

7. The motor of claim 1 or 2, further comprising a shaft core, wherein the rotor housing comprises a shaft core through hole, and the shaft core is disposed through the rotor housing through the shaft core through hole.

8. The electric machine of claim 1 or 2, further comprising a magnetic ring disposed inside the rotor housing.

9. The motor of claim 1 or 2, further comprising a gasket disposed at the opening of the hollow tube, an oil seal cap, an oil-impregnated bearing disposed inside the hollow tube, and a retaining ring disposed inside the hollow tube; the bottom of the stator base is provided with a communicating hole, and the oil seal cover is arranged at an opening of the communicating hole.

10. An exhaust fan comprising the motor according to any one of claims 1 to 9.