CN114430204A

CN114430204A - Motor assembly and rotor

Info

Publication number: CN114430204A
Application number: CN202011098865.8A
Authority: CN
Inventors: 陈善南
Original assignee: Grenergy Opto Inc
Current assignee: Grenergy Opto Inc
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2022-05-03

Abstract

The invention discloses a motor assembly and a rotor. The rotor is provided with a mandrel, a carrying seat, a plurality of iron cores, a plurality of permanent magnetic pieces and two stop pieces. The carrier seat is provided with a plurality of bumps which are spaced from each other and are in radiation configuration. The cross section of each lug is in a dovetail shape, so that a dovetail groove is formed between any two adjacent lugs. The plurality of iron cores are respectively arranged on the plurality of dovetail grooves, and any two adjacent iron cores form a configuration space together. Each iron core is provided with a dovetail block, and the dovetail blocks are arranged in the corresponding dovetail grooves. The permanent magnetic pieces are respectively arranged in the configuration spaces. The two stop pieces are arranged on two sides of the carrier seat. Therefore, the rotor can effectively reduce the manufacturing cost.

Description

Motor assembly and rotor

Technical Field

The present invention relates to a motor assembly and a rotor, and more particularly, to a modular motor assembly and a rotor.

Background

With the development of science and technology, the existing permanent magnet motor has been widely applied to many fields, for example: the automatic aerator comprises an aerator, an intelligent mechanical arm, an electric locomotive, a water pump, an electric bicycle, a fan, an electric automobile, air conditioning equipment, an industrial fan and the like. The rotor of the existing permanent magnet motor is provided with a rotor core made of a plurality of silicon steel sheets, and in the manufacturing process of the rotor core, the conditions of the size of the motor, the size and the shape of a permanent magnet to be configured and the like need to be considered, and the plurality of silicon steel sheets are bent and stacked layer by layer to form an annular structure.

The present inventors have considered that the above-mentioned drawbacks can be improved, and have made intensive studies and use of scientific principles, and finally have proposed the present invention which is designed reasonably and effectively to improve the above-mentioned drawbacks.

Disclosure of Invention

The present invention provides a motor assembly and a rotor for overcoming the disadvantages of the prior art.

The embodiment of the invention discloses a motor assembly, comprising: a rotor, comprising: a mandrel defining an axial direction; a carrier composed of non-magnetic material, said carrier comprising a through hole and a ring part connecting said through hole, said through hole is sleeved on said core shaft, said ring part has a plurality of projections spaced from each other, each projection is in dovetail shape along the vertical section of said axial direction, a dovetail groove is formed between any two adjacent projections, and said dovetail grooves are arranged radially on said ring part; the iron cores are respectively arranged on the dovetail grooves, and any two adjacent iron cores are not contacted with each other and form a configuration space together; each iron core is provided with an opposite setting end and a limiting end, each setting end is provided with a dovetail block, the dovetail blocks are arranged in the corresponding dovetail grooves, and two side surfaces of each limiting end facing to the adjacent two limiting ends are respectively provided with a stop block; a plurality of permanent magnetic members respectively disposed in the plurality of arrangement spaces; in any one of the configuration spaces, the permanent magnetic pieces are retained in the configuration spaces by the retaining blocks and the protruding blocks of the two adjacent iron cores; the two stop pieces are arranged on two sides of the carrier seat and can limit the plurality of iron cores and the plurality of permanent magnetic pieces to move along the axial direction; and a stator disposed at the periphery of the rotor.

Preferably, each configuration space is provided with more than one permanent magnet.

Preferably, each permanent magnet piece is a rectangular cylinder.

Preferably, the rotor further comprises a limiting block; the through hole part of the carrier seat is provided with a clamping groove which is configured along the axial direction; the mandrel is provided with a limiting groove corresponding to the position of the clamping groove, the limiting block is arranged between the clamping groove and the limiting groove, and the limiting block can abut against the inner edges of the limiting groove and the clamping groove to enable the carrier seat and the mandrel to synchronously rotate.

Preferably, each of the iron cores further has two grooves at the setting end, the two grooves are disposed at two sides of the dovetail block, and a bottom edge of each of the grooves does not contact an outer edge of the corresponding protrusion.

Preferably, in each groove, the bottom edge is semicircular, and the center of the bottom edge is located in the groove.

The embodiment of the invention also discloses a rotor, which comprises: a mandrel defining an axial direction; the loading seat is made of non-magnetic materials and comprises a through hole part and an annular part connected with the through hole part, the through hole part is sleeved on the mandrel, the annular part is provided with a plurality of lugs which are spaced and arranged in a radiation mode, and each lug is in a dovetail shape along a vertical section in the axial direction, so that a dovetail groove is formed between any two adjacent lugs; the iron cores are respectively arranged on the dovetail grooves, and any two adjacent iron cores are not contacted with each other and form a configuration space together; each iron core is provided with an opposite setting end and a limiting end, each setting end is provided with a dovetail block, the dovetail blocks are arranged in the corresponding dovetail grooves, and two side surfaces of each limiting end facing to the adjacent two limiting ends are respectively provided with a stop block; a plurality of permanent magnetic members respectively disposed in the plurality of arrangement spaces; in any one of the configuration spaces, the permanent magnetic pieces are retained in the configuration spaces by the retaining blocks and the protruding blocks of the two adjacent iron cores; and the two stop pieces are arranged on two sides of the carrier seat and can limit the plurality of iron cores and the plurality of permanent magnetic pieces to move along the axial direction.

Preferably, each permanent magnet piece is a rectangular cylinder.

In summary, the motor assembly and the rotor disclosed in the embodiments of the present invention can achieve the technical advantages of simplifying the manufacturing difficulty and reducing the manufacturing cost effectively by designing the dovetail blocks of the plurality of iron cores to be disposed in the plurality of dovetail grooves disposed in the radial shape and the permanent magnetic members to be disposed in the common disposition space of any two adjacent iron cores, so that the carrier base, the plurality of iron cores, and the plurality of permanent magnetic members of the present invention can be manufactured in a modular manner, and the plurality of iron cores and the plurality of permanent magnetic members can be disposed on the carrier base in the axial direction during the assembly process.

For a better understanding of the nature and technical content of the present invention, reference should be made to the following detailed description of the invention and the accompanying drawings, which are provided for illustration purposes only and are not intended to limit the scope of the invention in any way.

Drawings

Fig. 1 is a perspective view of a motor assembly of the present invention.

Fig. 2 is a perspective view of the motor assembly with the stator separated from the rotor.

Fig. 3 is an exploded view of the rotor of the motor assembly of the present invention.

Fig. 4 is a schematic plan view of the section line IV-IV of fig. 2.

Fig. 5 is an enlarged view of the V region of fig. 4.

FIG. 6 is a schematic plan view of the section line VI-VI of FIG. 2.

Fig. 7 is an enlarged schematic view of region VII of fig. 6.

Fig. 8 is a perspective view of the core of the motor assembly of the present invention.

Detailed Description

The embodiments of the present invention disclosed herein are described below with reference to specific embodiments, and those skilled in the art will understand the advantages and effects of the present invention from the disclosure of the present specification. The invention is capable of other and different embodiments and its several details are capable of modification and various other changes, which can be made in various details within the specification and without departing from the spirit and scope of the invention. The drawings of the present invention are for illustrative purposes only and are not intended to be drawn to scale. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.

It will be understood that, although the terms "first," "second," "third," etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are used primarily to distinguish one element from another element or from one signal to another signal. In addition, the term "or" as used herein should be taken to include any one or combination of more of the associated listed items as the case may be. Furthermore, the term "electrically coupled", as used herein, refers to one of "indirectly electrically connected" and "directly electrically connected".

Referring to fig. 1 to 8, the present embodiment provides a motor assembly 100. As shown in fig. 1 to 3, the motor assembly 100 includes a rotor 1 and a stator 2. The stator 2 is arranged at the periphery of the rotor 1, and the rotor 1 can rotate relative to the stator 2.

It should be noted that the rotor 1 and the stator 2 are collectively defined as the motor assembly 100 in the present embodiment. The present invention is not so limited. For example, the rotor 1 may be used alone (e.g., sold) or in combination with other components. The structure of each component of the motor assembly 100 will be described separately, and the connection relationship between each component of the motor assembly 100 will be described in due course.

As shown in fig. 3 and 5, the rotor 1 includes a core shaft 11, a carrier 12 disposed on the core shaft 11, a limiting block 13 disposed between the core shaft 11 and the carrier 12, a plurality of iron cores 14 disposed on the carrier 12, a plurality of permanent magnets 15 disposed between the plurality of iron cores 14, two stopping pieces 16 disposed on the carrier 12, and two fastening pieces 17 disposed on the core shaft 11.

The mandrel 11 is a long rod structure and made of a non-magnetic material (e.g., aluminum alloy, stainless steel, or reinforced plastic), and an axial direction AD is defined along a length extension direction of the mandrel 11. In this embodiment, the core shaft 11 has a limiting groove 111 and two fastening grooves 112, the limiting groove 111 is a long groove structure extending along the axial direction AD, and the limiting groove 111 is substantially disposed between the centers of the core shaft 11 and has a predetermined length PL. The two buckling grooves 112 are disposed on two sides of the limiting groove 111, and the two buckling grooves 112 are annular groove structures surrounding the outer edge of the mandrel 11.

The carrier 12 may be made of a non-magnetic material (e.g., aluminum alloy, stainless steel, or reinforced plastic), and the length of the carrier 12 along the axial direction AD is slightly greater than the predetermined length PL in this embodiment, but the invention is not limited thereto. As shown in fig. 4 to fig. 6, the carrier 12 includes a through hole portion 121, three connecting portions 122, and an annular portion 123, the through hole portion 121 is disposed on the core shaft 11, the through hole portion 121 has a slot 1211 disposed along the axial direction AD, the slot 1211 corresponds to the limiting slot 111 in position and length, so that an abutting space RS for disposing the limiting block 13 is formed between the slot 1211 and the limiting slot 111, and when the limiting block 13 is disposed in the abutting space RS, the limiting block 13 can abut against the inner edges of the limiting slot 111 and the slot 1211, so that the carrier 12 and the core shaft 11 rotate synchronously.

Of course, the way of synchronously rotating the carrier 12 and the spindle 11 is not limited to the embodiment. For example, the carrier 12 has a mating protrusion, and the mandrel 11 has a mating recess, and the mating protrusion and the mating recess can be fixed in a tight fit manner.

Referring to fig. 6 and 7, the three connecting portions 122 connect the through hole portion 121 and the annular portion 123. Specifically, one end of each of the three connecting portions 122 is connected to the outer edge of the through hole portion 121, and the other end is connected to the inner edge of the annular portion 123, but the present invention is not limited to this embodiment. For example, in other embodiments of the present invention not shown in the drawings, the number of the connecting portions 122 of the susceptor 12 may be adjusted according to the structural strength requirement, or the connecting portions 122 may be omitted, so that the annular portion 123 is directly connected to the through hole portion 121.

The annular portion 123 has a plurality of protrusions 1231 spaced apart from each other, a vertical cross section of each protrusion 1231 along the axial direction AD is a dovetail shape, such that a dovetail groove 1232 is formed between any two adjacent protrusions 1231, and the dovetail grooves 1232 are radially disposed on the annular portion 123.

AS shown in fig. 6 to 8, the plurality of cores 14 are respectively disposed on the plurality of dovetail slots 1232, and any two adjacent cores 14 are not in contact with each other and together form a configuration space AS, and the length of each core 14 along the axial direction AD is substantially the same AS the length of the carrier 12 along the axial direction AD in this embodiment, but the present invention is not limited to this embodiment.

In detail, each of the iron cores 14 has an opposite setting end 141 and a limiting end 142, each of the setting ends 141 has a dovetail block 1411, and the dovetail blocks 1411 are disposed in the corresponding dovetail grooves 1232, that is, a plurality of the iron cores 14 are also radially disposed on the outer edge of the carrier 12.

The end surface of each of the limiting ends 142 is arc-shaped, so that an imaginary connecting line CL of the limiting ends 142 is circular (as shown in fig. 6 and 7), and the imaginary connecting line CL and the mandrel 11 have a common center. Each of the two side surfaces of each of the two adjacent limiting ends 142 facing the limiting end 142 respectively has a stop block 1421, each of the stop blocks 1421 is disposed along the imaginary connecting line CL in this embodiment, and any two adjacent stop blocks 1421 are spaced from each other and do not contact each other.

In addition, each of the cores 14 further has two grooves 143 in this embodiment, the two grooves 143 are disposed on two sides of the dovetail block 1411, and a bottom edge 1431 of each of the grooves 143 does not contact with an outer edge of the corresponding bump 1231, and the bottom edge 1431 of each of the grooves 143 is semicircular and has a center C located in the groove 143. Of course, the two grooves 143 of each iron core 14 may be omitted in other embodiments not shown according to the requirement.

Referring again to fig. 3, 6 and 7, the permanent magnets 15 are permanent magnets and are respectively disposed in the disposition spaces AS. Specifically, each of the permanent magnetic members 15 is a rectangular cylinder in the embodiment, and the length of each of the permanent magnetic members 15 along the axial direction AD is substantially the same AS the length of the carrier 12 along the axial direction AD, that is, only one permanent magnetic member 15 is disposed in each of the configuration spaces AS, and the permanent magnetic member 15 is retained in the configuration space AS by the retaining block 1421 and the protruding block 1231 of two adjacent iron cores 14, but the invention is not limited to the embodiment. For example, two permanent magnet pieces 15 may be disposed in each configuration space AS, that is, the sum of the lengths of any two permanent magnet pieces 15 along the axial direction AD is substantially equal to the length of the configuration space AS (the carrier 12).

Referring to fig. 2 and 3 again, the two stop pieces 16 are made of a non-magnetic material (e.g., aluminum alloy, stainless steel, or reinforced plastic) and are disposed on two sides of the carrier 12, the two stop pieces 16 cover the carrier 12, a portion of each permanent magnet 15, and a portion of each iron core 14 in this embodiment, and the two stop pieces 16 can limit the plurality of iron cores 14 and the plurality of permanent magnet 15 from moving along the axial direction AD.

The two fastening elements 17 are C-shaped ring structures in this embodiment, and are respectively disposed on one side of the two stopping pieces 16 away from the carrier 12, and the two fastening elements 17 are disposed on the two fastening grooves 112 of the mandrel 11, so as to stop the two stopping pieces 16 from moving along the axial direction AD. Of course, the two stop pieces 16 can limit their movement along the axial direction AD in other ways, such as: the two stop pieces 16 are fixed on the mandrel 11 in a tight fit manner.

In order to more clearly illustrate the spirit of the motor assembly 100 of the present invention, the assembly method of the motor assembly 100 will be described below, but the assembly sequence in the description can be adjusted by the designer, and is not limited to the embodiment.

Referring to fig. 3, 4 and 6 again, the limiting block 13 is disposed in the limiting groove 111 of the mandrel 11, and the carrier 12 is sleeved on the mandrel 11 along the axial direction AD, so that the slot 1211 of the carrier 12 is located at a position corresponding to the limiting groove 111. The dovetail blocks 1411 of the plurality of iron cores 14 are disposed in the dovetail grooves 1232 of the carrier 12 along the axial direction AD such that outer edges of the dovetail blocks 1411 and inner edges of the dovetail grooves 1232 are fixed in a shape-fitting manner with each other. The permanent magnets 15 are arranged in the axial direction AD in the arrangement spaces AS formed by any two adjacent cores 14. The two stopper pieces 16 are disposed on both sides of the carrier 12 along the axial direction AD so as to cover the carrier 12, a part of each permanent magnet 15, and a part of each iron core 14. The two fasteners 17 are disposed on the two fastening grooves 112 of the core shaft 11 along the axial direction AD, so that the two fasteners 17 limit the two stop pieces 16 to move along the axial direction AD to complete the assembly of the rotor 1, and then the stator 2 is sleeved on the outer edge of the rotor 1 to complete the assembly of the motor assembly 100.

[ technical effects of embodiments of the present invention ]

In summary, in the motor assembly 100 and the rotor 1 disclosed in the embodiment of the present invention, by the design of "the dovetail blocks 1411 of the plurality of iron cores 14 are disposed in the plurality of dovetail grooves 1232 arranged in a radial shape" and "each of the permanent magnetic members 15 is disposed in the arrangement space AS common to any two adjacent iron cores 14", the carrier 12, the plurality of iron cores 14, and the plurality of permanent magnetic members 15 of the present invention can be manufactured in a modular manner, and the plurality of iron cores 14 and the plurality of permanent magnetic members 15 can be disposed on the carrier 12 in the axial direction AD during the assembly process, so AS to substantially simplify the manufacturing difficulty and effectively reduce the manufacturing cost.

In addition, the motor assembly 100 and the rotor 1 both fix the plurality of permanent magnets 15 in the axial direction AD through the arrangement space AS formed by any two adjacent iron cores 14, so that when the long-shaped rotor 1 is to be manufactured, the plurality of permanent magnets 15 installed therein can be axially arranged in segments, that is, more than one permanent magnet 15 is installed in each arrangement space, thereby avoiding the problem that the length of the plurality of permanent magnets 15 along the axial direction AD is too long and the manufacturing difficulty is increased.

Furthermore, the motor assembly 100 and the rotor 1 can be disposed in the plurality of allocation spaces AS in the axial direction through the plurality of permanent magnetic members 15, so that a maintenance worker can directly remove the two stopper pieces 16 to repair any one of the permanent magnetic members 15, and the subsequent maintenance of the motor assembly 100 and the rotor 1 is more convenient.

It should be noted that the motor assembly 100 and the rotor 1 of the present invention are disposed in a radial manner, so that when the motor assembly 100 and the rotor 1 are perpendicular to the axial direction AD, the lengths and thicknesses (widths) of the permanent magnetic members 15 can be adjusted according to the size and requirements of the motor assembly 100, so that the motor assembly 100 and the rotor 1 of the present invention have a larger magnetic flux than the conventional motor.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, which is defined by the appended claims.

Claims

1. A motor assembly, comprising:

a rotor, comprising:

a mandrel defining an axial direction;

a carrier composed of non-magnetic material, said carrier comprising a through hole and a ring part connecting said through hole, said through hole is sleeved on said core shaft, said ring part has a plurality of projections spaced from each other, each projection is in dovetail shape along the vertical section of said axial direction, a dovetail groove is formed between any two adjacent projections, and said dovetail grooves are arranged radially on said ring part;

the iron cores are respectively arranged on the dovetail grooves, and any two adjacent iron cores are not contacted with each other and form a configuration space together; each iron core is provided with an opposite setting end and a limiting end, each setting end is provided with a dovetail block, the dovetail blocks are arranged in the corresponding dovetail grooves, and two side surfaces of each limiting end facing to the adjacent two limiting ends are respectively provided with a stop block;

a plurality of permanent magnetic members respectively disposed in the plurality of arrangement spaces; in any one of the configuration spaces, the permanent magnetic pieces are retained in the configuration spaces by the retaining blocks and the protruding blocks of the two adjacent iron cores; and

the two stop pieces are arranged on two sides of the carrier seat and can limit the plurality of iron cores and the plurality of permanent magnetic pieces to move along the axial direction; and

and the stator is arranged on the periphery of the rotor.

2. The motor assembly of claim 1, wherein more than one permanent magnet is disposed in each of said disposition spaces.

3. The motor assembly of claim 1, wherein each of said permanent magnets is a rectangular cylinder.

4. The motor assembly of claim 1, wherein the rotor further comprises a stop; the through hole part of the carrier seat is provided with a clamping groove which is configured along the axial direction; the mandrel is provided with a limiting groove corresponding to the position of the clamping groove, the limiting block is arranged between the clamping groove and the limiting groove, and the limiting block can abut against the inner edges of the limiting groove and the clamping groove to enable the carrier seat and the mandrel to synchronously rotate.

5. The motor assembly of claim 1 wherein each of said cores further has two recesses at said set end, said two recesses being disposed on opposite sides of said dovetail block, and a bottom edge of each of said recesses not contacting an outer edge of a corresponding one of said projections.

6. The motor assembly of claim 5 wherein said bottom edge is semicircular in shape in each of said recesses, and the center of said bottom edge is located within said recess.

7. A rotor, comprising:

a mandrel defining an axial direction;

the loading seat is made of non-magnetic materials and comprises a through hole part and an annular part connected with the through hole part, the through hole part is sleeved on the mandrel, the annular part is provided with a plurality of lugs which are spaced and arranged in a radiation mode, and each lug is in a dovetail shape along a vertical section in the axial direction, so that a dovetail groove is formed between any two adjacent lugs;

the two stop pieces are arranged on two sides of the carrier seat and can limit the plurality of iron cores and the plurality of permanent magnetic pieces to move along the axial direction.

8. The rotor of claim 7 wherein each of said cores further has two recesses at said set end, said two recesses being disposed on opposite sides of said dovetail block, and a bottom edge of each of said recesses not contacting an outer edge of a corresponding one of said projections.

9. The rotor as set forth in claim 8 wherein said bottom edge is semicircular in shape in each of said grooves and the center of said bottom edge is located within said groove.

10. The rotor of claim 7, wherein each of said permanent magnet pieces is a rectangular cylinder.