CN212114907U

CN212114907U - Stator assembly and motor

Info

Publication number: CN212114907U
Application number: CN202020203682.7U
Authority: CN
Inventors: 麦嘉俊; 丁伟兵; 李瑞磊; 赵丽丹
Original assignee: Guangdong Midea Intelligent Technologies Co Ltd
Current assignee: Guangdong Midea Intelligent Technologies Co Ltd
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2020-12-08
Anticipated expiration: 2030-02-24

Abstract

The utility model provides a stator module and motor, this stator module include stator core (5) and around in stator coil on stator core (5), the terminal surface department of stator core (5) forms to the stair structure who has arch (51), is equipped with insulating sealed glue surface course (3) on this stair structure's stair surface (52), and this insulating sealed glue surface course (3) is in form to the profile in the axial of stator core (5) with stair structure's shape matched with ladder type glue surface course. The utility model discloses a trapezoidal rubber surface layer can avoid interfering with other parts, maximize compression motor inner space to the whole length of motor that can significantly reduce.

Description

Stator assembly and motor

Technical Field

The utility model relates to a power generation facility specifically, relates to a stator module and contain this stator module's motor.

Background

An Electric machine (also known as "motor") refers to an electromagnetic device that converts or transmits Electric energy according to the law of electromagnetic induction. The motor is represented by a letter M (old standard is represented by D) in a circuit, and the motor mainly plays a role in generating driving torque and serving as a power source of electric appliances or various machines.

At present, the length of the motor is not required to be too high under the conditions that the use environment of the motor is not harsh and the requirements of the used objects are not high. However, with the development of science and technology, the requirements of the objects using the motor are more and more strict, and the motor structure is developed and improved in the aspects of compressing length, improving performance and the like under the condition of increasingly strict use conditions.

In the prior art, since the insulating frame is installed outside the stator, then the winding is performed, and finally the copper wire is connected to the circuit board 2 ' (as shown in fig. 1), a boss 51 ' is formed at the end face of the stator core 5 ', so that an extra space is formed in the middle. In the whole machine assembling process, due to the requirements of insulativity and sealability, a layer of insulating sealant surface layer 3 'needs to be poured around the stator core 5'. However, in the existing glue filling technology, because the whole structure is compact, the gaps between the insulating sealant surface layer 3 ' and the front cover 1 ' and the rear cover 6 ' are very small. Because the length of the whole machine is not critical before, the insulating sealant surface layer 3 ' of the conventional motor is directly made to be horizontal, and the front cover 1 ' or the rear cover 6 ' is not a regular horizontal plane generally, so that the internal space of the motor is excessively occupied.

In addition, as shown in fig. 2, in the shaft structure of the conventional motor, a shoulder 7' is generally machined for positioning the magnetic steel. For a large-inertia motor, because the inner diameter of the stator core 5 ' is larger, the front cover 1 ' and the insulating sealant surface layer 3 ' cannot have obvious position repetition, and the shaft shoulder 7 ' is positioned at the front cover 1 ' and cannot cause excessive influence on the length of the whole motor; however, for a small inertia motor, the stator core 5 ' is relatively small, and generally, a certain space is reserved between the stator core and the stator core for the small inertia motor not to interfere with the stator core and the stator core, and at the moment, the shaft shoulder 7 ' is placed on one side of the rear cover 6 ', and the shaft shoulder occupies too much internal space of the motor

In conclusion, the whole length of the motor with the existing structure is difficult to compress, the application range of the motor is greatly limited, and particularly, the motor is limited in time and space.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a stator module is provided, this stator module compresses whole length through improving insulating sealed surface course structure, enlarges the application range of motor.

The utility model discloses further the technical problem that will solve provides a motor, and the stator module of this motor compresses whole length, enlarges the application range of motor through improving insulating sealed surface course structure.

In order to solve the technical problem, the utility model provides an aspect provides a stator module, include stator core and wind in stator coil on the stator core, stator core's terminal surface department forms to having bellied stair structure, is equipped with the sealed surface course of glue of insulation on this stair structure's the ladder face, and this sealed surface course of glue of insulation is in stator core's the axial form the profile with stair structure's shape matched with ladder type surface course.

Preferably, the outer diameter of the insulating sealant surface layer is the same as the outer diameter of the stator core, and the inner diameter of the insulating sealant surface layer is the same as the inner diameter of the stator core.

Preferably, the insulating sealant surface layer has two step surfaces in the axial direction.

Preferably, the insulating sealant surface layer is in contact with the step surface of the step structure in a fitting manner.

Preferably, the surface of the insulating sealant surface layer is a plane or non-plane, and when the surface is a plane, the thickness of the insulating sealant layer is 1-5 mm.

The utility model discloses another aspect provides a motor, including above stator module.

Further, the motor further comprises a first end cover for covering the non-output end of the motor and a second end cover for covering the output end of the motor.

Preferably, the first end cover is formed into a stepped shaft shape, and a stepped protrusion of the first end cover extends into a stepped hole of the insulating sealant layer and has a gap with an end surface of the stator core.

Further specifically, the motor further comprises a rotating shaft and a rotor fixed on the rotating shaft, and a shaft shoulder for axially positioning the magnetic steel is arranged on a section, close to the non-output end of the motor, of the rotating shaft.

Preferably, the shaft shoulder is located in a stepped hole of the insulating sealant layer and in a space between the first end cover and the end face of the stator core.

Through the technical scheme, the utility model discloses a following beneficial effect:

1. the utility model discloses an insulating sealed surface course of gluing forms the trapezoidal glue surface course unanimous with the shape of stair structure in stator core's axial, can avoid interfering with other parts, maximize compression motor inner space to the whole length of motor that can significantly reduce.

2. The utility model discloses a shoulder to conventional axle adjusts, puts the shoulder in stator core has bellied stair structure's terminal surface department, stretches into the shoulder hole of insulating sealed glue film even, reaches the effect of compression motor inner space, reduction motor whole length equally.

3. The utility model discloses a fine setting to motor inner structure for motor structure is compacter, has compressed the whole length of motor greatly, so that the motor is arranged in more harsh environment and the promotion of performance.

Drawings

FIG. 1 is a schematic view of a prior art stator assembly and housing combination;

FIG. 2 is a schematic diagram of a prior art motor construction;

fig. 3 is a schematic structural view of a combination of a stator assembly and a housing in the present invention;

fig. 4 is a schematic structural diagram of the motor of the present invention.

Description of the reference numerals

1 first end cap 11 step projection

2 circuit board 3 insulating sealant surface layer

31,32 step surface 33 stepped hole

Stator core with 4 rotating shafts and 5 rotating shafts

51 convex 52 step surface

6 second end cap 7 shaft shoulder

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings and examples. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and therefore the features defined "first", "second" may explicitly or implicitly include one or more of the features described.

Referring to fig. 3 and 4, the stator assembly of the present invention includes a stator core 5 and a stator coil wound on the stator core 5, and as known in the art, the stator core is an important component for forming a magnetic flux loop of the motor and fixing the stator coil, and is formed by compressing a punching sheet and various fasteners into a whole. The teeth of the stator core may be located either inside or outside the yoke portion thereof. The stator coil is an insulated conductor embedded in the stator slot, and is an element constituting a winding.

The utility model discloses in, stator core 5's terminal surface department is formed into the stair structure that has protruding 51 (the stair structure who has formed the higher stator core by winding stator coil's insulating frame and circuit board 2 jointly), protruding 51 includes behind the stator coil coiling protrusion that forms in the part of 5 ends of stator core and circuit board 2. Protruding 51 is followed stator core 5's outer lane extends to and is close to but not reach stator core 5's inner circle department, this stair structure's ladder face 52 includes circuit board 2 keeps away from a side of 5 ends of stator core circuit board 2's inner wall and stator coil coiling back form protrusion in the inner wall of the part of 5 ends of stator core, be equipped with insulating sealed glue surface course 3 on the ladder face 52, insulating sealed glue surface course 3 is in stator core 5's the axial on form into the profile with stair structure's shape matched with ladder type glue surface course, and this ladder type glue surface course is equal or close to in circumference thickness. From fig. 3 to fig. 4, the utility model discloses an insulating sealed glue surface course 3 has shoulder hole 33, compares in fig. 1 to the gluey surface course among the prior art shown in fig. 2, the utility model discloses an insulating sealed glue surface course 3's shoulder hole 33 has more usable spaces, can avoid interfering with other parts, and the maximize utilizes the inner space to can compress whole length greatly. The length of the whole machine can be reduced by 3-6mm when the motor is used for a low-power motor (below 5 kw); can be reduced by 6-10mm or more when used for a high-power motor (more than 5 kw).

In order to reach good sealed and insulating effect, as the utility model discloses well insulating sealed surface course 3's an embodiment, insulating sealed surface course 3's external diameter with stator core 5's external diameter is the same, the internal diameter with stator core 5's internal diameter is the same.

As an optimized mode of the utility model, the sealed surface course 3 of insulation is in there are two-

layer step face

31 and 32 in the axial, under this kind of condition, the protrusion that forms behind the internal diameter of circuit board 2 and the stator coil coiling in the internal diameter of the part of 5 ends of stator core is the same.

In addition, the inner diameter of the circuit board 2 and the inner diameter of the part of the stator coil wound and protruding out of the end of the stator core 5 may be different. For example, when the inner diameter of the circuit board 2 is smaller than the inner diameter of the part protruding from the end of the stator core 5 formed after the stator coil is wound, the insulating sealant surface layer 3 is in a step shape with three step surfaces. In order to reduce the processing difficulty of the insulating sealant surface layer 3, the inner diameter of the circuit board 2 is preferably the same as the inner diameter of the part which is formed after the stator coil is wound and protrudes out of the end of the stator core 5.

In addition, the insulating sealant surface layer 3 is preferably in contact with the stepped surface 52 of the stepped structure, so that on one hand, a good sealing effect and a function of increasing heat conduction can be ensured, and on the other hand, the internal space of the stator assembly can be compressed as much as possible.

The surface of the insulating sealant surface layer 3 is a plane or a non-plane, and when the surface is a plane, the thickness of the insulating sealant layer 3 is 1-5 mm. Generally designed to be flat for ease of manufacturing operations.

Additionally, the utility model also provides a motor, this motor includes foretell stator module. In addition, the motor further comprises a first end cover 1 for covering the non-output end of the motor and a second end cover 6 for covering the output end of the motor. The thickness of the end cover mounting bearing part is larger than that of the end cover non-bearing mounting part, so that the rotating shaft 4 can be firmly mounted, the first end cover 1 is in a stepped shaft shape, similarly, the second end cover 6 can also be in a stepped shaft shape, the outer diameter of the stepped bulge 11 of the first end cover 1 is smaller than the inner diameter of the stepped hole 33 of the insulating sealant layer 3, and the stepped bulge 11 can extend into the stepped hole 33 of the insulating sealant layer 3 so as to achieve the purpose of compressing the whole length of the motor.

The motor still includes pivot 4 and fixes rotor in pivot 4 (this is prior art, the utility model discloses a not shown in the figure), the non-output that is close to the motor of pivot 4 is promptly the district's section of first end cover 1 is equipped with the shaft shoulder 7 that is used for the axial positioning magnet steel. The shaft shoulder 7 is positioned in the stepped hole 33 of the insulating sealant layer 3. The stepped protrusion 11 and the end face of the stator core 5 have a gap, and the shaft shoulder 7 is located in the gap space. Compared with the prior art, the arrangement mode can reduce the length of the whole motor by 8-20mm or more.

To sum up, the utility model has the advantages of it is following: the insulating sealant surface layer is formed into a trapezoidal sealant surface layer with the shape consistent with that of the stepped structure in the axial direction of the stator core, so that interference with other components can be avoided, the internal space of the motor can be maximally compressed, and the overall length of the motor can be greatly reduced; the shaft shoulder of the conventional shaft is adjusted, and is placed at the end face of the stator core with the raised stepped structure and even extends into the stepped hole of the insulating sealing glue layer, so that the effects of compressing the internal space of the motor and reducing the overall length of the motor are achieved; through the fine setting to motor inner structure for motor structure is compacter, has compressed the whole length of motor greatly, so that the motor is arranged in harsher environment and the promotion of performance.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention. It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims

1. The utility model provides a stator module, include stator core (5) and wind in stator coil on stator core (5), its characterized in that, the terminal surface department of stator core (5) is formed into the stair structure that has arch (51), is equipped with insulating sealed glue surface course (3) on this stair structure's ladder face (52), and this insulating sealed glue surface course (3) is in form the profile in the axial of stator core (5) with stair structure's shape matched with ladder type glue surface course.

2. The stator assembly according to claim 1, characterized in that the outer diameter of the insulating sealant facing (3) is the same as the outer diameter of the stator core (5) and the inner diameter is the same as the inner diameter of the stator core (5).

3. A stator assembly according to claim 1, characterized in that said insulating sealant facing (3) has two stepped surfaces (31,32) in said axial direction.

4. The stator assembly of claim 1, characterized in that the insulating sealant facing (3) is in abutting contact with the stepped surface (52) of the stepped structure.

5. The stator assembly according to any of the claims 1 to 4, characterized in that the surface of the insulating sealant facing (3) is planar or non-planar, when planar, the thickness of the insulating sealant facing (3) is 1-5 mm.

6. An electrical machine, characterized by comprising a stator assembly according to any of claims 1-5.

7. The machine according to claim 6, further comprising a first end cap (1) covering the non-output end of the machine and a second end cap (6) covering the output end of the machine.

8. The machine according to claim 7, characterized in that the first end cap (1) is formed in a stepped shaft shape, and the stepped projection (11) of the first end cap (1) protrudes into the stepped hole (33) of the insulating sealant face layer (3) with a space from the end face of the stator core (5).

9. The machine according to claim 7, characterized in that it further comprises a rotating shaft (4) and a rotor fixed on the rotating shaft (4), the section of the rotating shaft (4) close to the non-output end of the machine being provided with a shoulder (7) for axially positioning magnetic steel.

10. The machine according to claim 9, characterized in that the shoulder (7) is located in the stepped bore (33) of the insulating sealant facing (3) and in the spacing space between the first end cap (1) and the end face of the stator core (5).