CN217607577U

CN217607577U - Rotor system of an electric machine

Info

Publication number: CN217607577U
Application number: CN202221205704.9U
Authority: CN
Inventors: 袁伟振; 高彩彪; 王凯杰; 陈百伦
Original assignee: Zhejiang Ruixi Electronic Technology Co ltd
Current assignee: Zhejiang Ruixi Electronic Technology Co ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-10-18
Anticipated expiration: 2032-05-17

Abstract

The utility model provides a rotor system of motor belongs to mechanical technical field. It has solved prior art and has had the poor problem of stability. The rotor system of the motor comprises an iron core, a retainer and magnets, wherein the retainer is connected to the outer side of the iron core, the number of the magnets is a plurality of, a plurality of magnets are circumferentially and uniformly distributed on the outer side of the iron core, the magnets are positioned and connected between the iron core and the retainer, the number of the retainer and the number of the magnets are a plurality of, the retainers are circumferentially and uniformly distributed and connected to the outer side of the iron core, a connecting cavity is formed between two adjacent retainers and the outer side of the iron core, the magnets are arranged in a one-to-one correspondence mode with the connecting cavity, and the magnets are connected into the corresponding connecting cavity and further comprise a rotating shaft and a shell. The rotor system of the motor has high stability.

Description

Rotor system of an electric machine

Technical Field

The utility model belongs to the technical field of machinery, a rotor system of motor is related to.

Background

The existing motor rotor comprises a rotor unit, a rotating shaft and a shell, wherein the rotor unit is formed by connecting an iron core, a retainer and a magnet, the shell is sleeved outside the iron core, and the magnet is stably limited in the shell to form a rotor system.

It can be seen that the existing electronic rotor needs to solve the following problems: it is necessary to suppress the rotor case from axially falling off the rotor core and to suppress the relative rotation of the rotor case with respect to the rotor.

As a method of suppressing the above problem, there are various methods of manufacturing a rotor case and a magnet fixed to a rotor core by bonding and fixing the rotor case and the magnet to each other using a glue, but in this method, when the glue fails due to an external factor, the rotor case may not be suppressed from dropping from the axial direction of the rotor core, the relative rotation of the rotor case with respect to the rotor may be suppressed, and a long time may be required for the glue to completely cure, thereby increasing the number of steps for manufacturing the rotor.

In another method, one or both sides of the rotor case in the axial direction are bent and fixed toward the radially inner side, but in this method, an axial force for suppressing the rotor case from coming off the rotor core in the axial direction and a circumferential force for suppressing the relative rotation of the rotor case with respect to the rotor may not satisfy the design requirements.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a high and compact structure's of stability rotor system of motor.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a rotor system of motor, includes iron core, holder and magnet, and above-mentioned holder is connected in the iron core outside, and the quantity of above-mentioned magnet is a plurality of, and a plurality of magnet circumference equipartition is in the iron core outside, and magnet location connects between iron core and holder, its characterized in that, the quantity of holder and magnet is a plurality of, and the connection of a plurality of holder circumference equipartitions is in the iron core outside, forms one between two adjacent holders and the iron core outside and is connected the chamber, and above-mentioned magnet sets up and the magnet is connected in the connection intracavity that corresponds with being connected the chamber one-to-one, still includes pivot and shell, and iron core, holder and magnet that link together form a rotor unit, rotor unit's quantity is a plurality of, and above-mentioned pivot wears to establish in proper order to connect on every rotor unit's iron core, and above-mentioned shell cladding is connected on all rotor units.

The rotor system of the motor creatively and stably connects the plurality of rotor units through the rotating shaft, and the rotating shaft and the rotor units are fixedly connected in the circumferential direction and the axial direction after connection.

Meanwhile, the shell is sleeved on all the rotor units, and all the rotor units are stably coated by the shell, so that the stability of the whole rotor system is effectively improved.

In the rotor system of the motor, the center of the iron core is provided with a through connecting hole, the rotating shaft penetrates through the connecting hole and is connected with the iron core in a tight fit manner.

Because the rotating shaft and each iron core are circumferentially fixed and axially fixed, the rotating shaft can be stably and fixedly connected with each rotor unit.

In the rotor system of the motor, the housing includes a cylindrical body, an annular protruding retaining edge is disposed on the inner side of the lower end of the body, and a retaining shoulder which is turned inwards is disposed on the upper end of the body.

The body is attached to the outer sides of the iron cores and the retainer, connection stability of the body is guaranteed, and meanwhile the shell can be stably and axially fixedly connected to all the iron cores under the action of the blocking edge and the blocking shoulder.

In the rotor system of the motor, the number of the blocking shoulders is a plurality, and the blocking shoulders are circumferentially and uniformly distributed on the inner side of the upper end of the body.

The retaining shoulder is formed by folding, and the structure enables the upper end of the shell to be stably connected with the upper part of the iron core in a positioning way.

In the rotor system of the motor, the retaining edge, the retaining shoulder and the body are of an integrated structure.

In the rotor system of the motor, the holder includes a root portion, a holding portion and a connecting portion, two ends of the connecting portion are respectively connected with the root portion and the holding portion, the width of the root portion and the width of the holding portion are both larger than the width of the connecting portion, and the root portion is connected with the iron core in a tight fit manner.

The implant root part is connected with the iron core in a tight fit manner, so that the whole retainer can be stably connected to the side part of the iron core.

The holding part is used for positioning the magnet between two adjacent holding frames.

In the rotor system of the motor, the implant part and the holding part extend out of two sides of the connecting part.

The structure enables the stable buckling connection of the holding part on the magnet, and ensures the stable connection of the magnet and the iron core.

In the rotor system of the motor, the outer side of the iron core is provided with a connecting groove recessed along the axial direction of the iron core, the connecting groove is matched with the root planting part, and the connecting groove and the retainer are arranged in one-to-one correspondence.

After the connecting groove is matched and connected with the root part, the retainer can be stably connected with the side part of the iron core.

In the rotor system of the motor, the end parts of the retainer, the magnet and the iron core are flush, the upper ends of the retainer, the magnet and the iron core are abutted against the blocking shoulder, and the lower ends of the retainer, the magnet and the iron core are abutted against the blocking edge.

Such a structure enables the holder, the magnet, the core, and the case to be stably coupled.

In the rotor system of the motor, the distance between two adjacent retaining shoulders is smaller than the width of the magnet.

The structure can prevent the magnet from falling out from the space between two adjacent retaining shoulders.

Compared with the prior art, the rotor system of the motor can properly reduce the working hours for manufacturing the rotor when being assembled, can ensure to provide reliable axial force for inhibiting the rotor shell from axially falling off from the rotor core and circumferential force for inhibiting the relative rotation of the rotor shell relative to the rotor, and has higher stability.

Meanwhile, the cage, the magnet and the iron core are stably covered by the shell, so that the structure is compact and the practical value is high.

Drawings

Fig. 1 is a schematic perspective view of a rotor system of the present motor.

Fig. 2 is a schematic view of a connection structure of a rotor unit and a rotating shaft in a rotor system of the motor.

Fig. 3 is a schematic perspective view of a housing in a rotor system of the motor.

In the figure, 1, iron core; 1a, connecting holes; 1b, connecting grooves; 2. a holder; 2a, planting roots; 2b, a connecting part; 2c, a holding part; 3. a magnet; 4. a rotating shaft; 5. a body; 5a, blocking edges; 5b, shoulder blocking.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, the rotor system of the motor includes an iron core 1, a holder 2 and magnets 3, wherein the holder 2 is connected to the outside of the iron core 1, the number of the magnets 3 is several, the magnets 3 are circumferentially and uniformly distributed on the outside of the iron core 1, and the magnets 3 are positioned and connected between the iron core 1 and the holder 2.

As shown in fig. 1 and fig. 2 and fig. 3, the quantity of holder 2 and magnet 3 is a plurality of, and the connection of 2 circumference equipartitions of a plurality of holders is in the iron core 1 outside, forms one between two adjacent holders 2 and the iron core 1 outside and is connected the chamber, and above-mentioned magnet 3 sets up and magnet 3 connects in the connection intracavity that corresponds with connecting the chamber one-to-one, still includes pivot 4 and shell, and iron core 1, holder 2 and magnet 3 that link together form a rotor unit, the quantity of rotor unit is a plurality of, and above-mentioned pivot 4 wears to establish in proper order and connects on the iron core 1 of every rotor unit, and above-mentioned shell cladding is connected on all rotor units.

The center of the iron core 1 is provided with a through connecting hole 1a, the rotating shaft 4 is arranged at the connecting hole 1a in a penetrating mode, and the rotating shaft 4 is connected with the iron core 1 in a tight fit mode.

The shell comprises a cylindrical body 5, an annular convex blocking edge 5a is arranged at the inner side of the lower end of the body 5, and a blocking shoulder 5b which is turned inwards is arranged at the upper end of the body 5.

The number of the blocking shoulders 5b is a plurality of, and the blocking shoulders 5b are circumferentially and uniformly distributed on the inner side of the upper end of the body 5.

The blocking edge 5a, the blocking shoulder 5b and the body 5 are of an integrated structure.

The holder 2 comprises a root implanting part 2a, a holding part 2c and a connecting part 2b, two ends of the connecting part 2b are respectively connected with the root implanting part 2a and the holding part 2c, the width of the root implanting part 2a and the width of the holding part 2c are both larger than the width of the connecting part 2b, and the root implanting part 2a is connected with the iron core 1 in a tight fit manner.

The implant root portion 2a and the holding portion 2c each extend out of both sides of the connecting portion 2 b.

The outer side of the iron core 1 is provided with a connecting groove 1b recessed along the axial direction, the connecting groove 1b is matched with the root part 2a, and the connecting groove 1b and the retainer 2c are arranged in one-to-one correspondence.

The equal parallel and level of tip of holder 2, magnet 3 and iron core 1 and the upper end of three all support and lean on keeping off shoulder 5b, and the lower extreme of holder 2, magnet 3 and iron core 1 all supports and leans on keeping off along 5 a.

The distance between two adjacent retaining shoulders 5b is smaller than the width of the magnet 3.

Specifically, since the rotating shaft and each iron core are circumferentially fixed and axially fixed, the rotating shaft can be stably and fixedly connected with each rotor unit.

Of course, the inner side of the body is attached to the outer sides of the iron cores and the retainer, so that the connection stability of the body is guaranteed, and meanwhile, the shell can be stably and axially fixedly connected to all the iron cores under the action of the blocking edge and the blocking shoulder.

The features of the above-described embodiments may be combined arbitrarily, and for the sake of brevity, all possible combinations of the features in the above-described embodiments will not be described in detail, but should be construed as being within the scope of the present disclosure unless there is any conflict between such combinations of features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims

1. The utility model provides a rotor system of motor, includes iron core, holder and magnet, and above-mentioned holder is connected in the iron core outside, and the quantity of above-mentioned magnet is a plurality of, and a plurality of magnet circumference equipartition is in the iron core outside, and magnet location connects between iron core and holder, its characterized in that, the quantity of holder and magnet is a plurality of, and the connection of a plurality of holder circumference equipartitions is in the iron core outside, forms one between two adjacent holders and the iron core outside and is connected the chamber, and above-mentioned magnet sets up and the magnet is connected in the connection intracavity that corresponds with being connected the chamber one-to-one, still includes pivot and shell, and iron core, holder and magnet that link together form a rotor unit, rotor unit's quantity is a plurality of, and above-mentioned pivot wears to establish in proper order to connect on every rotor unit's iron core, and above-mentioned shell cladding is connected on all rotor units.

2. The rotor system of an electric machine of claim 1, wherein the core has a through connection hole at the center, the shaft is inserted into the connection hole and the shaft is tightly fit with the core.

3. The rotor system of an electric machine of claim 2, wherein the housing includes a cylindrical body having an annular protruding retaining edge at an inner side of a lower end of the body, and a retaining shoulder folded inward at an upper end of the body.

4. The rotor system of an electric machine of claim 3, wherein the number of the retaining shoulders is several, and the retaining shoulders are circumferentially and evenly arranged on the inner side of the upper end of the body.

5. The rotor system of an electric machine of claim 4, wherein the rim, shoulder and body are a unitary structure.

6. The rotor system of an electric machine according to claim 5, wherein the holder includes a root portion, a holding portion, and a connecting portion, both ends of the connecting portion are connected to the root portion and the holding portion, respectively, and the width of the root portion and the width of the holding portion are both greater than the width of the connecting portion, and the root portion is connected to the iron core in a tight fit manner.

7. The rotor system of an electric machine as recited in claim 6, wherein the implant portion and the holding portion each extend out of both sides of the connecting portion.

8. The rotor system of an electric motor according to claim 7, wherein the outer side of the core has a coupling groove recessed along an axial direction thereof, the coupling groove is matched with the root portion and the coupling groove is provided in one-to-one correspondence with the holder.

9. The rotor system of an electric machine of claim 8, wherein the ends of the cage, the magnets and the core are flush and the upper ends of the cage, the magnets and the core abut against the shoulder, and the lower ends of the cage, the magnets and the core abut against the ledge.

10. The rotor system of an electric machine of claim 9, wherein a spacing dimension between adjacent shoulders is less than a width dimension of the magnet.