CN210957949U - Inner rotor magnetic sheet structure - Google Patents
Inner rotor magnetic sheet structure Download PDFInfo
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- CN210957949U CN210957949U CN201921975375.4U CN201921975375U CN210957949U CN 210957949 U CN210957949 U CN 210957949U CN 201921975375 U CN201921975375 U CN 201921975375U CN 210957949 U CN210957949 U CN 210957949U
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- inner rotor
- iron core
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- sheet structure
- rotor iron
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Abstract
The utility model discloses an inner rotor magnetic sheet structure, concretely relates to inner rotor equipment field, including inner rotor iron core, the pivot hole has been seted up at inner rotor iron core's middle part, inner rotor iron core's a plurality of inner rotor supporter of fixed surface are connected with, the one end fixedly connected with towards the piece of inner rotor iron core is kept away from to the inner rotor supporter, and there is the inserting groove between two adjacent towards the piece, the inner wall of inserting groove is pegged graft and is had the magnet steel, the quantity towards the piece is sixteen. The utility model discloses a sixteen magnet steels are annular radial distribution about the centre of a circle of inner rotor iron core for the problem that the air gap flux density that the clearance caused between two magnet steels weakens can be by the equivalence in certain electric angle, and can make air gap magnetic field evenly distributed, can not lead to the fact the influence to the steady rotation of motor, thereby realizes the hole axiality of magnet steel and inner rotor iron core, avoids the motor to rotate unstable purpose.
Description
Technical Field
The utility model relates to an inner rotor equipment field, more specifically say, the utility model relates to an inner rotor magnetic sheet structure.
Background
The permanent magnet synchronous motor is high in efficiency, energy-saving, high in power density and torque density, and wide in application. At present, the structure of a common permanent magnet motor is divided into a radial flux cylindrical permanent magnet motor and an axial flux disc permanent magnet motor according to the trend of magnetic flux passing through an air gap. The radial magnetic flux cylindrical permanent magnet motor is composed of an outer rotor structure and an inner rotor structure. Most of radial magnetic flux cylindrical permanent magnet motors are designed into an inner rotor structure, generally speaking, the rotor inertia of the inner rotor structure is low, and the radial magnetic flux cylindrical permanent magnet motor is suitable for the conditions of rapid acceleration and deceleration and high expected torque inertia, particularly the conditions frequently adopted in a servo motor; because the stator heat dissipation condition is better, the motor is convenient to install, and most radial magnetic circuit motors are designed into inner rotors. The stator structure of the permanent magnet synchronous motor is similar to that of an asynchronous alternating current motor, the manufacturing process is also similar, but the rotor structures of the permanent magnet synchronous motor and the asynchronous alternating current motor are completely different, and the rotor of the permanent magnet synchronous motor is embedded with integrated magnetic steel (rare earth magnetic material), so that the manufacturing of the integrated magnetic steel is inconvenient, and especially when a high-power permanent magnet synchronous motor is manufactured, a complex tool is required. The original assembly process only carries out mechanical processing on the size of the sintered permanent magnet, and the sintered permanent magnet is directly assembled on a rotor core, so that the roundness of the outer diameter of the bonded permanent magnet and the coaxiality of an inner hole of the rotor core cannot be met, and the uniform air gap magnetic field can be realized only by ensuring the two conditions, so that the motor can rotate more stably.
However, in the prior art, the traditional magnetic steel arrangement mode is arranged along the circumferential direction, so that the roundness of the outer diameter of the adhered magnetic steel and the coaxiality of inner holes of inner rotor iron cores cannot be guaranteed, an even air gap magnetic field cannot be guaranteed, and the problem of unstable rotation of the assembled motor is easily solved.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides an inner rotor magnetic sheet structure, the utility model aims to solve the technical problem that: the magnetic steel can not be coaxial with the inner hole of the rotor core, so that the motor cannot rotate stably.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an inner rotor magnetic sheet structure, includes inner rotor iron core, the pivot hole has been seted up at inner rotor iron core's middle part, a plurality of inner rotor supporter of surface fixedly connected with of inner rotor iron core, the one end fixedly connected with towards the piece of inner rotor iron core is kept away from to the inner rotor supporter, and there is the inserting groove between two adjacent towards the piece, the inner wall of inserting groove is pegged graft and is had the magnet steel.
Sixteen magnetic steels are distributed radially in an annular mode about the circle center of the inner rotor iron core, the problem that air gap flux density is weakened due to the fact that gaps between the two magnetic steels is equivalent to a certain electric angle, and air gap magnetic fields are evenly distributed, so that stable rotation of the motor cannot be influenced.
In a preferred embodiment, the number of punching sheet is sixteen, and sixteen punching sheets are the surface that the annular set was including rotor core for sixteen magnet steel when the installation, can be the annular setting with rotor core's central line as the center pin for sixteen magnet steel and the axiality of inner rotor core.
In a preferred embodiment, a fixing groove is fixedly connected to the middle of each punching sheet, so that a plurality of punching sheets can be conveniently fixed through the fixing groove.
In a preferred embodiment, the magnetic poles of two adjacent magnetic steels are opposite in direction, so that sixteen magnetic steels staggered with each other can form a complete magnetic field.
In a preferred embodiment, two adjacent punching sheets can be separated and communicated with each other.
In a preferred embodiment, the width of the insertion groove is equal to the width of the magnetic steel, so that the magnetic steel can be fixed on the inner wall of the insertion groove.
In a preferred embodiment, sixteen magnetic steels are distributed in an annular radial manner with respect to the center of a circle of the inner rotor core, so that when a winding under the device cuts magnetic lines of force, as sixteen magnetic steels are distributed in an annular radial manner with respect to the center of a circle of the inner rotor core, back electromotive forces formed by the lengths of the winding units are superposed together according to a certain phase difference, the problem of weakening of air gap magnetic density caused by gaps between the two magnetic steels can be equivalent within a certain electric angle, the waveform of the back electromotive forces is hardly influenced, and sixteen magnetic steels are distributed in an annular radial manner with respect to the center of a circle of the inner rotor core, so that air gap magnetic fields are uniformly distributed, and the stable rotation of the motor is not.
In a preferred embodiment, the punching sheet is formed by punching a soft magnetic material.
The utility model discloses a technological effect and advantage:
1. be annular radial distribution through the centre of a circle of sixteen magnet steels about inner rotor iron core for the problem that the air gap flux density that the clearance caused between two magnet steels weakens can be by the equivalence in certain electric angle, and can make air gap magnetic field evenly distributed, can not lead to the fact the influence to the steady rotation of motor, thereby realize the hole axiality of magnet steel and inner rotor iron core, avoid the motor to rotate unstable purpose, compare with prior art, the hole axiality of magnet steel and inner rotor iron core, avoid causing the motor to rotate unstable condition.
2. Under the same rotor diameter or area, sixteen magnetic steels are distributed in an annular radial mode, motor power can be effectively improved, and compared with the prior art, the motor power is improved.
Drawings
Fig. 1 is an overall structure front view of the present invention.
Fig. 2 is a side sectional view of the overall structure of the present invention.
The reference signs are: 1. an inner rotor core; 2. a rotating shaft hole; 3. an inner rotor support body; 4. punching; 5. inserting grooves; 6. magnetic steel; 7. and fixing the grooves.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that 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 belong to the protection scope of the present invention.
The utility model provides an inner rotor magnetic sheet structure, including inner rotor iron core 1, pivot hole 2 has been seted up at inner rotor iron core 1's middle part, inner rotor iron core 1's fixed surface is connected with a plurality of inner rotor supporter 3, inner rotor supporter 3 keeps away from inner rotor iron core 1's one end fixedly connected with towards piece 4, and there is inserting groove 5 between two adjacent towards piece 4, inserting groove 5's inner wall is pegged graft and is had magnet steel 6.
The number of the punching sheets 4 is sixteen, and the sixteen punching sheets 4 are annularly arranged on the surface of the inner rotor core 1.
The middle part of the punching sheet 4 is fixedly connected with a fixing groove 7.
The magnetic pole directions of two adjacent magnetic steels 6 are opposite.
The adjacent two punching sheets 4 can be separated and also can be communicated.
The width of inserting groove 5 equals the width of magnet steel 6 for magnet steel 6 can be fixed at the inner wall of inserting groove 5.
Sixteen magnetic steels 6 are distributed in an annular radial manner relative to the circle center of the inner rotor iron core 1.
The punching sheet 4 is formed by punching a soft magnetic material.
As shown in fig. 1-2, the embodiment specifically is: when the motor is used, sixteen pieces of magnetic steel 6 are distributed in an annular radial mode relative to the circle center of an inner rotor core 1, so that back electromotive forces formed by the length of a winding unit are superposed together according to a certain phase difference, the problem of weakening of air gap magnetic density caused by gaps between the two pieces of magnetic steel 6 can be equivalent to a certain electric angle, the waveform of the back electromotive forces is hardly influenced, the motor can run stably, the sixteen pieces of magnetic steel 6 are distributed in the annular radial mode relative to the circle center of the inner rotor core 1, an air gap magnetic field can be uniformly distributed, the influence on stable rotation of the motor cannot be caused, and the problem that the motor cannot rotate stably due to the fact that the magnetic steel 6 cannot be coaxial with an inner hole of the rotor core in the prior art is;
as shown in fig. 1-2, the embodiment specifically is: under same rotor diameter or area, be annular radial distribution through sixteen magnet steels 6 about the centre of a circle of inner rotor core 1, two adjacent magnet steels 6's magnetic pole opposite direction for sixteen magnet steels 6 that set up each other in a staggered way can form complete magnetic field, can effectually improve motor power, and the low problem of motor power that exists among the prior art has specifically been solved to this embodiment.
The utility model discloses the theory of operation:
referring to the attached drawings 1-2 of the specification, sixteen magnetic steels 6 are distributed in an annular radial mode relative to the circle center of an inner rotor iron core 1, so that the problem of weakening of air gap flux density caused by gaps between the two magnetic steels 6 can be equivalent to a certain electric angle, air gap magnetic fields can be uniformly distributed, influence on stable rotation of a motor can be avoided, coaxiality of inner holes of the magnetic steels 6 and the inner rotor iron core 1 is achieved, and the purpose of unstable rotation of the motor is avoided.
Referring to the attached drawings 1-2 in the specification, sixteen magnetic steels 6 are distributed in an annular radial mode under the condition of the same rotor diameter or area, and the motor power can be effectively improved.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides an inner rotor magnetic sheet structure, includes inner rotor iron core (1), its characterized in that: pivot hole (2) have been seted up at the middle part of inner rotor iron core (1), a plurality of inner rotor supporter (3) of fixed surface of inner rotor iron core (1) are connected with, the one end fixedly connected with towards piece (4) of inner rotor iron core (1) is kept away from in inner rotor supporter (3), has inserting groove (5) between two adjacent towards piece (4), the inner wall of inserting groove (5) is pegged graft and is had magnet steel (6).
2. An inner rotor magnetic sheet structure according to claim 1, wherein: the number of the punching sheets (4) is sixteen, and the sixteen punching sheets (4) are annularly arranged on the surface of the inner rotor core (1).
3. An inner rotor magnetic sheet structure according to claim 1, wherein: the middle part of the punching sheet (4) is fixedly connected with a fixing groove (7).
4. An inner rotor magnetic sheet structure according to claim 1, wherein: the magnetic pole directions of two adjacent magnetic steels (6) are opposite.
5. An inner rotor magnetic sheet structure according to claim 1, wherein: the adjacent two punching sheets (4) can be separated and also can be communicated.
6. An inner rotor magnetic sheet structure according to claim 1, wherein: the width of the insertion groove (5) is equal to that of the magnetic steel (6), so that the magnetic steel (6) can be fixed on the inner wall of the insertion groove (5).
7. An inner rotor magnetic sheet structure according to claim 1, wherein: sixteen magnetic steels (6) are distributed in an annular radial mode relative to the circle center of the inner rotor iron core (1).
8. An inner rotor magnetic sheet structure according to claim 1, wherein: the punching sheet (4) is formed by punching a soft magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921975375.4U CN210957949U (en) | 2019-11-15 | 2019-11-15 | Inner rotor magnetic sheet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921975375.4U CN210957949U (en) | 2019-11-15 | 2019-11-15 | Inner rotor magnetic sheet structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210957949U true CN210957949U (en) | 2020-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921975375.4U Active CN210957949U (en) | 2019-11-15 | 2019-11-15 | Inner rotor magnetic sheet structure |
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| CN (1) | CN210957949U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI763066B (en) * | 2020-09-30 | 2022-05-01 | 綠達光電股份有限公司 | Motor assembly and rotor |
| CN114430204A (en) * | 2020-10-14 | 2022-05-03 | 绿达光电股份有限公司 | Motor assembly and rotor |
-
2019
- 2019-11-15 CN CN201921975375.4U patent/CN210957949U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI763066B (en) * | 2020-09-30 | 2022-05-01 | 綠達光電股份有限公司 | Motor assembly and rotor |
| CN114430204A (en) * | 2020-10-14 | 2022-05-03 | 绿达光电股份有限公司 | Motor assembly and rotor |
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