CN115483809A - Motor and rotor thereof - Google Patents
Motor and rotor thereof Download PDFInfo
- Publication number
- CN115483809A CN115483809A CN202110663279.1A CN202110663279A CN115483809A CN 115483809 A CN115483809 A CN 115483809A CN 202110663279 A CN202110663279 A CN 202110663279A CN 115483809 A CN115483809 A CN 115483809A
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- CN
- China
- Prior art keywords
- magnetic
- rotor
- magnetically permeable
- drive shaft
- permeable plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a motor and a rotor thereof, wherein the motor comprises a stator and a rotor, at least one pair of winding teeth are arranged in the stator for winding coils, the rotor comprises a magnetic part and a driving shaft, the driving shaft is connected to one end of the magnetic part, the magnetic part is distributed between the winding teeth, the magnetic part comprises a first magnetic conduction plate, a magnetic steel and a second magnetic conduction plate, the magnetic steel is clamped between the first magnetic conduction plate and the second magnetic conduction plate, and after the coils are electrified, two sides of the magnetic steel are driven by force, so that the rotor vibrates in a reciprocating manner.
Description
Technical Field
The invention relates to the field of motors, in particular to a motor and a rotor thereof.
Background
The motor has wide application in the field of electric appliances. With the improvement of the social living standard, small-sized electric appliances such as electric toothbrushes and electric beauty instruments are favored by more and more consumers. The working parts of such small electric appliances need to be driven by a motor to reciprocate for cleaning, massaging, etc. The angle, distance, frequency, stability, etc. of the reciprocating motion of the working member have an influence on the working effect. The performance of the motor has a decisive effect on the working effect of the working parts.
Application document CN106685135A discloses an electric toothbrush and a motor device thereof, wherein the motor device includes that the motor is opened lessons and is fixed in installing the at least 2 utmost points stator core in the motor housing symmetrically, is equipped with coil winding on the stator core, including being used for the insulating bobbin with stator core and coil winding insulation, still include with stator core matched with 2 at least antipodal magnet steel structures, the magnet steel structure all is fixed in the periphery of shaft coupling, shaft coupling fixedly connected with motor shaft. The magnetic steel structures are unevenly distributed on the periphery of the shaft coupling, the volume of the magnetic steel is relatively small, and the strength of the generated magnetic force is limited. Before the magnetic steel is installed on the motor shaft, the shaft coupling needs to be installed firstly, and then the magnetic steel is installed on the shaft coupling, so that the installation is complicated. The motor shaft of the motor adopts a three-section stepped structure, the structure is complex, and the manufacturing cost is high.
Disclosure of Invention
One advantage of the present invention is to provide a motor and a rotor thereof, wherein the rotor of the motor has a larger volume of magnetic steel, and the output effect is better.
Another advantage of the present invention is to provide a motor and a rotor thereof, which have a simple structure, low manufacturing cost, and high installation efficiency.
Another advantage of the present invention is to provide an electric motor and a rotor thereof, wherein the rotor includes a magnetic portion, and the magnetic portion is disposed between stator cores of the electric motor to generate magnetic steel, which is driven by the stator to move.
Another advantage of the present invention is to provide a motor and a rotor thereof, wherein the rotor further includes a driving shaft connected to the magnetic force part to be driven by the magnetic force part to output kinetic energy outwards.
Another advantage of the present invention is to provide a motor and a rotor thereof, the rotor further including a first connecting member connecting the magnetic force part and the driving shaft, wherein the first connecting member is formed by injection molding, and is simple to manufacture and free from an installation step.
Another advantage of the present invention is to provide an electric motor and a rotor thereof, wherein the rotor further includes a second connecting member injection-molded at the other end of the magnetic portion for mounting a ball bearing such that the rotor is supported by the ball bearing for movement within the stator.
Another advantage of the present invention is to provide an electric machine and a rotor thereof, wherein the rotor is mainly or entirely distributed in the stator as a component for generating magnetic force, so as to enhance the magnetic field, and thus the electric machine has better output effect.
Additional advantages and features of the invention will be set forth in the detailed description which follows and in part will be apparent from the description, or may be learned by practice of the invention as set forth hereinafter.
In one aspect of the present invention, there is provided a motor comprising:
the stator is internally provided with at least one pair of winding teeth for winding coils; and
a rotor, the rotor includes a magnetic force portion and a drive shaft, the drive shaft be connected in the one end of magnetic force portion, magnetic force part cloth in between the wire winding tooth, wherein magnetic force portion includes a first magnetic conduction board, an at least magnet steel and a second magnetic conduction board, the magnet steel by the centre gripping in first magnetic conduction board with between the second magnetic conduction board, wherein, after the coil circular telegram, the both sides atress of magnet steel orders about, makes rotor reciprocating vibration.
According to an embodiment of the invention, the rotor comprises a first connection element connecting the magnetic portion and the drive shaft, wherein the first connection element is injection molded between the magnetic portion and the drive shaft.
According to an embodiment of the present invention, after the first connecting member fixes one of the first magnetic conductive plate and the second magnetic conductive plate to the driving shaft, the magnetic steel and the other one of the first magnetic conductive plate and the second magnetic conductive plate are mounted to form the magnetic force portion.
According to an embodiment of the present invention, the rotor further includes a second connecting member disposed at the other end of the magnetic force part opposite to the driving shaft to wrap the end of the magnetic force part.
According to an embodiment of the present invention, the second connecting member includes a second body portion and a supporting portion, the second body portion includes at least one of the first magnetic conductive plate and the second magnetic conductive plate, the supporting portion extends outward from the other end to form a cylindrical shape or a cylinder-like shape, and the supporting portion is used for mounting at least one ball bearing.
According to one embodiment of the invention, the motor is obtained by mounting at least one ball bearing at the first connection member, and at least one housing and at least one end cap outside the stator.
According to another aspect of the present invention, the present invention further provides a rotor comprising
The magnetic force part generates a magnetic field, wherein the magnetic force part comprises a first magnetic conduction plate, at least one magnetic steel and a second magnetic conduction plate, and the magnetic steel is clamped by the first magnetic conduction plate and the second magnetic conduction plate; and
and the driving shaft is fixed at one end of the magnetic part and is driven to output kinetic energy when the magnetic part is driven.
According to an embodiment of the invention, the rotor further comprises a first connecting member connecting the magnetic portion and the drive shaft, the first connecting member being formed by injection molding between the magnetic portion and the drive shaft.
According to an embodiment of the present invention, the rotor further comprises a second connecting member, wherein the second connecting member is injection molded at the other end of the magnetic force part.
According to an embodiment of the present invention, one of the driving shaft, the first magnetic conductive plate, and the second magnetic conductive plate is positioned, injection molding is performed between the driving shaft and the one of the first magnetic conductive plate and the second magnetic conductive plate and at the other end of the one of the first magnetic conductive plate and the second magnetic conductive plate, the first connecting member and the second connecting member are formed, a semi-finished product is obtained, and the magnetic steel and the other of the first magnetic conductive plate and the second magnetic conductive plate are mounted on the semi-finished product, so that the rotor is obtained.
Drawings
Fig. 1 is a schematic view of an electric machine according to a preferred embodiment of the invention.
Fig. 2 is an exploded view of an electric motor according to a preferred embodiment of the present invention.
Fig. 3 is a schematic view of a rotor of an electric machine according to a preferred embodiment of the invention.
Fig. 4 is an exploded view of a rotor of an electric machine in accordance with a preferred embodiment of the present invention.
Fig. 5 is a schematic diagram of the motion of a motor according to a preferred embodiment of the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The embodiments of the invention described below and illustrated in the drawings are intended to be illustrative only and not limiting. Any variations or modifications may be made to the embodiments of the invention without departing from the principles described.
Referring to the drawings of the present specification and fig. 1 to 3, an electric motor and a rotor thereof according to a preferred embodiment of the present invention are disclosed and described in the following description.
The motor includes a rotor 10 and a stator 20, and the rotor 10 is assembled inside the stator 20.
The rotor 10 includes a driving shaft 11, a first connecting member 12, a second connecting member 13 and a first magnetic conductive plate 14. The first connecting member 12 connects the first magnetic conductive plate 14 and the driving shaft 11, and the second connecting member 13 is mounted on the other end of the first magnetic conductive plate 14.
That is to say, the driving shaft 11, the first connecting piece 12, the first magnetic conductive plate 14 and the second connecting piece 13 are arranged in sequence, and are connected end to end.
The rotor 10 further includes a second magnetic conductive plate 15, and the second magnetic conductive plate 15 is disposed opposite to the first magnetic conductive plate 14. A space is formed between the first magnetic conduction plate 14 and the second magnetic conduction plate 15. The rotor 10 further includes a magnetic steel 16, and the magnetic steel 16 is disposed between the first magnetic conductive plate 14 and the second magnetic conductive plate 15.
The first magnetic conductive plate 14 and the second magnetic conductive plate 15 may be replaced with each other.
The magnetic steel 16 has a first outer surface 161 and a second outer surface 162, the first outer surface 161 and the second outer surface 162, and the first outer surface 161 and the second outer surface 162 respectively face the stator 20. The number of the magnetic steel 16 can be 1, and the magnetic steel is integrally arranged between the first magnetic conduction plate 14 and the second magnetic conduction plate 15, so that the space occupation by a shaft is avoided, the volume of the magnetic steel is effectively increased, and the output of the motor is enhanced.
In other examples, the number of the magnetic steels 16 may be greater than 1, and the magnetic steels are separately distributed between the first magnetic conductive plate 14 and the second magnetic conductive plate 15.
The driving shaft 11 extends outwards from the first connecting member 12 and is distributed on only a part of the rotor 10 to serve as a power output member. The first magnetic conduction plate 14, the second magnetic conduction plate 15 and the magnetic steel 16 are only distributed between the first connecting piece 12 and the second connecting piece 13, so that space occupation of other parts is avoided, a magnetic field is effectively enhanced, and the motor has a better force output effect.
In other words, the rotor 10 includes a magnetic portion and a driving shaft 11, the magnetic portion is distributed in the stator 10, and the magnetic portion generates magnetic poles toward both sides of the stator 20, respectively, so as to be driven by interaction with the stator 20. The magnetic force portion includes the magnetic steel 16, the first magnetic conductive plate 14, and the second magnetic conductive plate 15, which are components for generating and conducting magnetic force. The driving shaft 11 is connected to one end of the magnetic force part, and the driving shaft 11 transmits kinetic energy to the outside after the magnetic force part is driven.
The first connecting piece 12 is connected with the magnetic part and the driving shaft 11, the first connecting piece 12 can be formed by injection molding between the magnetic part and the driving shaft 11, the magnetic part and the driving shaft 11 are fixed strongly, and the manufacturing method is simple and efficient.
The first connecting member 12 includes a first body portion 121, and one end of the driving shaft 11 is wrapped by one end of the first body portion 121, so that the two are fixedly connected. The other end of the first body part 121 forms a first mounting groove 122 on at least one side of the two sides, and the first mounting groove 122 is formed by being recessed inwards from the side. A first protrusion 123 is formed to extend outward from the end portion of the first body portion 121, and the cross-sectional area of the protrusion 123 is smaller than that of the first body portion 121 in the same direction.
One end of the first magnetic conduction plate 14 is wrapped around the side of the first body 121. Similarly, the second connector 13 includes a second body 131, the other end of the first magnetic conductive plate 14 is wrapped around the side of the second body 131, and the first magnetic conductive plate 14 is disposed between the first connector 12 and the second connector 13.
A second mounting groove 132 is formed extending from the end of the second body 131 to the side. A second protrusion 133 is formed by extending from the end of the second body 131, and the cross-sectional area of the second protrusion 133 is smaller than the cross-sectional area of the second body 131 in the same direction.
A supporting portion 134 is formed by extending outward from the other end of the second body portion 131, and the supporting portion 134 has a cylindrical shape or a cylinder-like shape for mounting a bearing.
Two ends of the magnetic steel 16 respectively form a clamping groove 160, and the first projection 123 and the second projection 133 are respectively matched, and the magnetic steel 16 is installed between the first connecting piece 12 and the second connecting piece 13 in a clamping mode. For the purpose of further enhancing the connection strength, glue may be applied to one or more of the magnetic steel 16, the first magnetic conductive plate 14, the first connecting member 12, and/or the second connecting member 13.
In another example of the present invention, the first protrusion 123 and the second protrusion 133 may be grooves, and the locking groove 160 may be a protrusion, and the fixing is formed by a concave-convex snap-fit connection.
Two ends of the second magnetic conductive plate 15 form a clamping portion 151, and the clamping portion 151 is correspondingly clamped in the first mounting groove 122 and the second mounting groove 132. And the joint can be glued to strengthen the connection strength.
The first connecting piece 12, the second connecting piece 13, the first magnetic conduction plate 14, the second magnetic conduction plate 15 and the magnetic steel 16 are mutually matched, clamped, positioned and fixed. And the fixed connection strength between the two can be further enhanced by gluing.
Or, the magnetic portions are mainly or entirely disposed between the winding teeth 211, and the magnetic force generating components have a large volume and a strong magnetic field, so that the rotor 10 has a good force output effect.
The stator 20 further includes at least one pair of bobbins 22, the bobbins 22 being installed at both ends of the stator core 21, a coil being wound to the stator core 21 along the bobbins 22, the bobbins 22 insulating the coil from the stator core 21. The motor further includes a housing 30, at least two ball bearings 40, and at least one end cap 50, the housing 20, the ball bearings 40, and the end cap 50 are mounted on an outer side of the stator 20 along the driving shaft 21, the housing 30 and the end cap 50 include the stator 20, and the ball bearings 40 support the rotor 10 for rotation in the stator 20.
Fig. 5 is a schematic view of the motion of the motor. As shown in fig. 5, the first outer surface 161 and the second outer surface 162 of the magnetic steel 16 respectively generate an S pole and an N pole. After the coils wound on the winding teeth 211 at both sides are energized, S poles and N poles are respectively generated. Under the action of the suction force and the thrust force, the rotor 20 rotates clockwise, and after the current passed by the coil is converted into the direction, the rotor 20 rotates counterclockwise, and finally the reciprocating vibration motion state of the rotor 20 is realized.
The invention further provides a motor and a manufacturing method of the rotor of the motor. The drive shaft 11 and the first magnetically permeable plate 14 are made of a metal material. After the driving shaft 11 and the first magnetic conductive plate 14 are positioned, the first connecting member 12 is formed between the driving shaft 11 and the first magnetic conductive plate 14 by injection molding, the driving shaft 11 and the first magnetic conductive plate 14 are connected, and one end of the first magnetic conductive plate 14 is formed by injection molding to form the second connecting member 13.
The magnetic steel 16 is mounted between the first connecting piece 12 and the second connecting piece 13. The first connecting piece 12 and the second connecting piece 13 clamp the magnetic steel 16, and the magnetic steel 16 and the first magnetic conduction plate 14 can be fixed by gluing to enhance the connection strength.
The second magnetic conductive plate 15 is installed on the other side of the magnetic steel 16, and the second magnetic conductive plate 15 may be clamped between the first connecting piece 12 and the second connecting piece 13, or may be attached to the magnetic steel 16. The rotor 20 is manufactured and assembled.
The bobbin 22 is mounted to both ends of the stator core 21, and a coil is wound along the bobbin 22 and the winding teeth 211, the bobbin 22 insulating the coil from the stator core 21.
The housing 30, the ball bearing 40 and the end cover 50 are mounted to the outside of the stator 20, the housing 30 and the end cover 50 wrap the stator 20, and the ball bearing 40 supports the rotor 10 to move in the stator 20.
It will be understood by those skilled in the art that the stator shown in the drawings is for reference and ease of description purposes only and that the rotor provided by the present invention may be adapted to a variety of stators, the specific shape, configuration of which is not limiting. The stator can be in a shape with internal symmetrical winding teeth, can also be in a shape with an opening at one side, and can also be various stators such as a U-shaped stator, a split stator and the like.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and the technical features in the respective technical solutions can be modified or replaced, or combined with each other, and any technical solutions without departing from the principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The stator is internally provided with at least one pair of winding teeth for winding coils; and
a rotor, the rotor includes a magnetic force portion and a drive shaft, the drive shaft be connected in the one end of magnetic force portion, magnetic force part cloth in between the wire winding tooth, wherein magnetic force portion includes a first magnetic conduction board, an at least magnet steel and a second magnetic conduction board, the magnet steel by the centre gripping in first magnetic conduction board with between the second magnetic conduction board, wherein, after the coil circular telegram, the both sides atress of magnet steel orders about, makes rotor reciprocating vibration.
2. The electric machine of claim 1 wherein the rotor includes a first coupling member connecting the magnetic force portion and the drive shaft, wherein the first coupling member is injection molded between the magnetic force portion and the drive shaft.
3. The electric machine of claim 2, wherein the magnetic steel and the other of the first magnetically permeable plate and the second magnetically permeable plate are mounted to form the magnetic portion after the first connector secures the one of the first magnetically permeable plate and the second magnetically permeable plate to the drive shaft.
4. The motor of claim 3, wherein the rotor further comprises a second coupling member disposed at the other end of the magnetic portion opposite to the driving shaft to wrap the end of the magnetic portion.
5. The electric machine of claim 4 wherein the second connection member comprises a second body portion comprising at least one of the first and second magnetically permeable plates and a support portion extending outwardly from the other end to form a cylindrical or quasi-cylindrical shape, the support portion being adapted to receive at least one ball bearing.
6. The electric machine of claim 5, wherein at least one ball bearing is mounted at said first connection member, and at least one housing and at least one end cap are mounted outside said stator, resulting in said electric machine.
7. A rotor, comprising
The magnetic force part generates a magnetic field, wherein the magnetic force part comprises a first magnetic conduction plate, at least one magnetic steel and a second magnetic conduction plate, and the magnetic steel is clamped by the first magnetic conduction plate and the second magnetic conduction plate; and
and the driving shaft is fixed at one end of the magnetic part, and when the magnetic part is driven, the driving shaft is driven to output kinetic energy.
8. The rotor of claim 7, wherein the rotor further comprises a first coupling member connecting the magnetic portion and the drive shaft, the coupling member being injection molded between the magnetic portion and the drive shaft.
9. The rotor of claim 8, wherein the rotor further comprises a second connecting member, wherein the second connecting member is injection molded at the other end of the magnetic force part.
10. The rotor of claim 9, wherein one of the drive shaft, the first magnetically permeable plate, and the second magnetically permeable plate is positioned, injection molding is performed between the drive shaft and one of the first magnetically permeable plate and the second magnetically permeable plate, and the other end of the one of the first magnetically permeable plate and the second magnetically permeable plate, the first connecting piece and the second connecting piece are formed, a semi-finished product is obtained, and the magnetic steel and the other of the first magnetically permeable plate and the second magnetically permeable plate are mounted on the semi-finished product, and the rotor is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110663279.1A CN115483809A (en) | 2021-06-16 | 2021-06-16 | Motor and rotor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110663279.1A CN115483809A (en) | 2021-06-16 | 2021-06-16 | Motor and rotor thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115483809A true CN115483809A (en) | 2022-12-16 |
Family
ID=84419078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110663279.1A Pending CN115483809A (en) | 2021-06-16 | 2021-06-16 | Motor and rotor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115483809A (en) |
-
2021
- 2021-06-16 CN CN202110663279.1A patent/CN115483809A/en active Pending
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