CN210273617U

CN210273617U - Outer rotor motor with sealed stator

Info

Publication number: CN210273617U
Application number: CN201921310165.3U
Authority: CN
Inventors: 林峭; 林芝; 林书廷
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-04-07
Anticipated expiration: 2029-08-13

Abstract

The utility model discloses an outer rotor motor with a sealed stator, which comprises a front end cover, a stator, an outer rotor and a rotating shaft, wherein the middle part of the front end cover is provided with a cylindrical bearing seat, a motor bearing is arranged in the bearing seat, the stator is sleeved on the outer wall of the bearing seat, the outer wall of the stator is also provided with a ring sleeve, the outer walls of the ring sleeve, the front end cover and the bearing seat are enclosed into a stator placing cavity, heat-conducting insulating pouring sealant is poured into the stator placing cavity, the outer rotor is sleeved outside the stator and is connected with the rotating shaft through a rear end face, and the; the whole stator is being wrapped up in the insulating casting glue of heat conduction to guarantee the leakproofness of stator, can also improve the protection to the stator after the insulating casting glue of heat conduction solidifies, only need during production with the bearing frame highly set up with the highly uniform of ring cover, just can directly carry out the casting glue, production simple process can reduction in production cost.

Description

Outer rotor motor with sealed stator

Technical Field

The utility model relates to the field of electric machines, in particular to outer rotor electric machine that stator is sealed.

Background

The motor is an electromagnetic device for realizing electric energy conversion or transmission according to the electromagnetic induction law, and the motor is mainly used for generating driving torque and serving as a power source of electric appliances or various machines. Most machines are used mainly in dry places, and for machines working in water or wet areas, a sealing and waterproof structure is required. At present, most of motors are complicated in waterproof structure arrangement, so that the production process is complex and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve one of the technical problem that exists among the prior art at least, provide a stator sealing's external rotor electric machine, simple structure is reasonable, can effectively seal waterproof, production simple process to the stator.

The main aspect of the utility model provides a stator sealing's external rotor electric machine, including front end housing, stator, external rotor and pivot, the middle part of front end housing is provided with the bearing frame of drum type, be provided with the motor bearing in the bearing frame, the stator cover is in the outer wall of bearing frame, the outer wall of stator still is provided with the ring cover, the outer wall of ring cover, front end housing and bearing frame encloses synthetic stator and places the chamber, the stator is placed the chamber and is irritated heat conduction insulation casting glue, the external rotor cover is in the stator outside and through the rear end face with the pivot is connected, the pivot is passed the motor bearing.

The outer rotor motor at least has the following beneficial effects: set up the bearing frame through the middle part at the front end housing, the stator cover is in the outer wall of bearing frame and still set up the ring cover at the outer wall of stator, formed the stator and placed the chamber, place the intracavity at the stator and pour into heat conduction insulation casting glue, wrap up whole stator to guarantee the leakproofness of stator, can also improve the protection to the stator after the heat conduction insulation casting glue solidification, only need during production with the height setting of bearing frame highly with the highly uniform of ring cover, just can directly carry out the casting glue, production process is simple, can reduction in production cost.

Preferably, the circular sleeve is made of stainless steel sheet.

According to the utility model discloses main aspect an external rotor electric machine that stator is sealed, the stator includes stator core, cover iron core insulating rubber cover on the stator core with wind around stator coil on the stator core.

According to the utility model discloses in the main aspect an external rotor electric machine that stator is sealed, the edge of front end lid is provided with the surrounding edge that the rear extends. The front end housing sets up the front end that the surrounding edge can surround the ring cover, can avoid placing when the intracavity pours into heat conduction insulation casting glue toward the stator through surrounding edge and ring cover tight fit, heat conduction insulation casting glue seepage.

According to the utility model discloses in main aspect an external rotor electric machine that stator is sealed, still be provided with the installation department that is used for the motor to fix and install on the front end cover, be provided with the mounting hole on the installation department. The installation part and the installation hole are arranged, so that the whole motor can be conveniently installed and fixed.

According to the utility model discloses main aspect an external rotor electric machine that stator is sealed, be provided with two motor bearings in the bearing frame. The two motor bearings are arranged, so that the stress of the rotating shaft is more balanced, and the rotating shaft is not easy to deviate from the axis.

According to the utility model discloses in main aspect an external rotor electric machine that stator is sealed, the external rotor with rear end face integrated into one piece, the middle part of rear end face be provided with be used for with the connecting hole that the pivot is connected.

According to the utility model discloses in main aspect an external rotor electric machine that stator is sealed, the rear end face is provided with a plurality of through-holes that are used for the radiating. The through holes can reduce the weight of the outer rotor on one hand and can ventilate and radiate on the other hand.

According to the utility model discloses main aspect an external rotor electric machine that stator is sealed, still including surrounding the external rotor with the protection casing of rear end face, the protection casing with the front end housing is connected. The protective cover is arranged to wrap the rotating parts such as the outer rotor and the rear end face, so that sundries can be prevented from being wound on the outer rotor and the rear end face in the practical and practical process.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

fig. 1 is an overall schematic diagram of an outer rotor motor with a sealed stator according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an outer rotor motor with a sealed stator according to an embodiment of the present invention;

fig. 3 is another schematic structural view of an outer rotor motor with a sealed stator according to an embodiment of the present invention;

fig. 4 is another schematic structural diagram of an outer rotor motor with a sealed stator according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a stator of an outer rotor motor with a sealed stator according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an outer rotor motor with a sealed stator according to an embodiment of the present invention;

fig. 7 is a cross-sectional view of an outer rotor motor with a sealed stator according to another embodiment of the present invention.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of 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.

Referring to fig. 1-3, an embodiment of the utility model provides an outer rotor electric machine that stator is sealed, including front end housing 10, stator 20, outer rotor 30 and pivot 40, front end housing 10's middle part is provided with the bearing frame 11 of drum type, be provided with motor bearing 50 in the bearing frame 11, stator 20 overlaps the outer wall at bearing frame 11, stator 20's outer wall still is provided with ring cover 60, the cavity is placed to the synthetic stator of enclosing of front end housing 10 and bearing frame 11's outer wall, the stator is placed the cavity and is irritated heat conduction insulating casting glue 70, outer rotor 30 overlaps in the stator 20 outside and is connected with pivot 40 through rear end face 31, pivot 40 passes motor bearing 50.

In this embodiment, set up bearing frame 11 through the middle part at front end housing 10, stator 20 cover is at the outer wall of bearing frame 11 and still sets up ring cover 60 at stator 20's outer wall, it places the chamber to have formed the stator, place the intracavity at the stator and pour into heat conduction insulating casting glue 70, wrap up whole stator 20, thereby guarantee stator 20's leakproofness, can also improve the protection to stator 20 after heat conduction insulating casting glue 70 solidifies, only need during production to set up bearing frame 11 highly with ring cover 60's highly uniform, just can directly carry out the casting glue, and simple production process can reduce production cost.

As can be seen, the heat conducting insulating potting adhesive 70 is shaped as a ring with a certain thickness as shown in fig. 2 and 3 after being cured, and wraps the stator 20 inside, so as to seal, waterproof and protect the stator 20.

It should be noted that, the placing directions of the front end cover 10 and the stator 20 during the motor production should be as shown in fig. 4, at this time, the stator placing cavity formed by enclosing the outer walls of the annular sleeve 60, the front end cover 10 and the bearing seat 11 has only one opening in one direction, and the direction is upward, at this time, the heat conducting insulating potting adhesive 70 may be directly poured, and the heat conducting insulating potting adhesive 70 in the drawing is in a cured shape.

It should be noted that the front cover 10 and the bearing seat 11 in this embodiment are integrally formed, but this patent does not limit that the front cover 10 and the bearing seat 11 are necessarily integrally formed, and the front cover 10 and the bearing seat 11 may be separately formed in two parts and then assembled together.

Preferably, the torus 60 is made of stainless steel sheet.

Specifically, referring to fig. 5, the stator 20 includes a stator core 21, a core insulation rubber sleeve 22 fitted over the stator core 21, and a stator coil 23 wound around the stator core 21.

Referring to fig. 3, another embodiment of the present invention further provides a stator-sealed outer rotor motor, in which the edge of the front end cover 10 is provided with a surrounding edge 12 extending rearward.

In this implementation, the front end cover 10 is provided with the surrounding edge 12 to surround the front end of the annular sleeve 60, and the surrounding edge 12 can be tightly matched with the annular sleeve 60, so that the heat conduction insulating pouring sealant 70 is prevented from leaking when the heat conduction insulating pouring sealant 70 is poured into the stator placing cavity.

Referring to fig. 1, another embodiment of the present invention further provides an outer rotor motor with a sealed stator, wherein an installation portion 13 for fixing and installing the motor is further disposed on the front end cover 10, and a mounting hole 14 is disposed on the installation portion 13.

In this embodiment, the installation portion 13 and the installation hole 14 are provided to facilitate installation and fixation of the entire motor.

Referring to fig. 4, another embodiment of the present invention further provides an outer rotor motor with a sealed stator, wherein two motor bearings 50 are disposed in the bearing seat 11.

In this embodiment, two motor bearings 50 are provided to balance the stress on the rotating shaft 40 and prevent the rotating shaft from deviating from the axis.

Specifically, referring to fig. 6, another embodiment of the present invention further provides an outer rotor motor with a sealed stator, wherein the outer rotor 30 is integrally formed with the rear end surface 31, and a connection hole 311 for connecting with the rotating shaft 40 is provided in the middle of the rear end surface 31. The outer rotor 30 and the rear end surface 31 may be formed separately in two parts and assembled together, and are not necessarily formed integrally.

Specifically, referring to fig. 6, another embodiment of the present invention further provides an outer rotor motor with a sealed stator, wherein the rear end face 31 is provided with a plurality of through holes 312 for heat dissipation.

In this embodiment, the through holes 312 can reduce the weight of the outer rotor 30 and can ventilate and dissipate heat.

Referring to fig. 7, another embodiment of the present invention further provides an outer rotor motor with a sealed stator, wherein the outer rotor motor further includes a protective cover 80 surrounding the outer rotor 30 and the rear end surface 31, and the protective cover 80 is connected to the front end cover 10.

In this embodiment, the protective cover 80 is provided to cover the rotating components such as the outer rotor 30 and the rear end surface 31, so that it is possible to prevent impurities from being wound around the outer rotor 30 and the rear end surface 31 in an actual practical process, and it is also possible to prevent a magnetic material in water from being adsorbed onto the outer rotor 30 and the rear end surface 31 when the outer rotor motor is used as a water pump motor.

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 gist of the present invention within the knowledge range of those skilled in the art.

Claims

1. The utility model provides an external rotor electric machine that stator is sealed, its characterized in that, includes the front end housing, stator, external rotor and pivot, the middle part of front end housing is provided with the bearing frame of drum type, be provided with the motor bearing in the bearing frame, the stator cover is in the outer wall of bearing frame, the outer wall of stator still is provided with the ring cover, the outer wall of ring cover, front end housing and bearing frame encloses synthetic stator and places the chamber, the stator is placed the chamber and is irritated heat conduction insulating casting glue, the external rotor cover the stator outside and through the rear end face with the pivot is connected, the pivot is passed the motor bearing.

2. The outer rotor motor with a sealed stator according to claim 1, wherein the annular sleeve is made of stainless steel sheet.

3. The stator-sealed external rotor electric machine according to claim 1, wherein the stator includes a stator core, a core insulation rubber sleeve covering the stator core, and a stator coil wound around the stator core.

4. The outer rotor motor with the sealed stator as claimed in claim 1, wherein the edge of the front end cover is provided with a peripheral edge extending rearward.

5. The outer rotor motor with the sealed stator as claimed in claim 1, wherein the front end cover further has a mounting portion for fixing and mounting the motor, and the mounting portion has a mounting hole.

6. The outer rotor motor with a sealed stator according to claim 1, wherein two motor bearings are disposed in the bearing housing.

7. The outer rotor motor with the sealed stator according to claim 1, wherein the outer rotor is integrally formed with the rear end surface, and a connection hole for connecting with the rotating shaft is formed in a middle portion of the rear end surface.

8. The outer rotor motor with the sealed stator according to claim 1, wherein the rear end surface is provided with a plurality of through holes for heat dissipation.

9. The stator-sealed external rotor electric machine of claim 1, further comprising a shield surrounding the external rotor and the rear end face, the shield being connected to the front end cap.