Magnetizing head structure for reducing cogging torque

Abstract

The utility model provides a magnetizing head structure capable of reducing cogging torque, which relates to the technical field of motor magnetizing heads, and comprises a rotating shaft and a stator structure, one end of the outer side of the rotating shaft is provided with a support bearing, the outer side of the rotating shaft is provided with a rotor structure, the rotor structure comprises a rotor and a rotor iron core, and the rotor is arranged on the outer side of the rotating shaft. A rotor core is arranged on the outer side of the rotor, a stator is arranged on the outer side of the rotor, stator winding grooves are formed in the stator, isolation columns are arranged between the stator winding grooves, open grooves are formed in the stator, so that windings can be conveniently embedded into the stator grooves when the motor is manufactured, operation is relatively simple, construction is easy, production efficiency can be improved, and cost is reduced. And after the winding is embedded, the open slot is sealed through the sealing insertion strip, so that the air gap magnetic conductance distribution is more uniform and continuous, the magnetic field fluctuation caused by the magnetic conductance change is reduced, the cogging torque is reduced, the vibration and noise during the operation of the motor are reduced, and the stability and comfort of the operation of the motor are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor magnetizing head technical field, more specifically, especially relates to a magnetizing head structure of reducing tooth slot torque. BACKGROUND

[0002] In today's industry and many technical fields, the motor as the key power driven equipment plays a vital role. However, tooth slot torque has been a prominent problem that plagues the performance improvement of the motor. When the motor is running, tooth slot torque will cause torque ripple, causing the motor to produce vibration and noise, which not only affects the service life of the motor itself, but also has a negative impact on the running stability and precision of the equipment in which it is located, such as electric vehicles, high-precision CNC machine tools, etc. However, the current motor magnetizing head still has some drawbacks:

[0003] First, the current motor magnetizing head usually sets closed slots on the stator to reduce the fluctuation of the magnetic field caused by the magnetic flux, thereby reducing the tooth slot torque. However, the closed slot is not convenient for winding embedding, so it is not convenient for production, and it increases the difficulty of embedding the wire.

[0004] Second, if the stator is provided with open slots, although it is beneficial to the production efficiency of the motor, it cannot solve the problem of vibration and noise caused by tooth slot torque.

[0005] Therefore, a magnetizing head that is convenient for production and reduces tooth slot torque is needed. UTILITY MODEL CONTENTS

[0006] In order to solve the above technical problems, the present disclosure relates to a magnetizing head structure for reducing tooth slot torque to solve the problem that the current motor magnetizing head cannot simultaneously have the advantages of convenient production and reducing tooth slot torque. By opening open slots on the stator, the winding can be more conveniently embedded in the stator slot during motor manufacturing, the operation is relatively simple, especially for some large motors or windings with more turns and thicker wire, it is easier to construct, can improve production efficiency and reduce the difficulty of embedding the wire. After embedding the winding, the open slots are closed by closing the plug, which can make the air gap magnetic flux distribution more uniform and continuous, reduce the magnetic field fluctuation caused by the change of magnetic flux, reduce the tooth slot torque, reduce the vibration and noise of the motor during operation, and improve the stability and comfort of the motor operation.

[0007] The utility model relates to a magnetizing head structure for reducing tooth slot torque, which is achieved by the following specific technical means:

[0008] The first aspect of the present disclosure provides a magnetizing head structure for reducing tooth slot torque, which specifically includes a rotating shaft and a stator structure.

[0009] The outer side of the rotating shaft is provided with a rotor structure, the rotor structure comprises a rotor and a rotor core, the outer side of the rotating shaft is provided with the rotor, the outer side of the rotor is provided with the rotor core, the outer side of the rotor is provided with a stator, the inside of the stator is provided with a stator winding slot, the stator winding slot is provided with a separation column, and the bottom of the stator winding slot is provided with an open slot.

[0010] Preferably, the stator winding slot annular array has twelve groups.

[0011] Preferably, the inside of the stator is provided with an assembly inner ring, the outer side of the assembly inner ring is fixedly connected with a closed insertion strip, and the closed insertion strip is tightly closed in the open slot.

[0012] Preferably, one end of the assembly inner ring is fixedly connected with a fixed convex ring, the fixed convex ring is provided with a mounting groove, and the stator is provided with a threaded hole corresponding to the mounting groove.

[0013] Preferably, the inside of the mounting groove is provided with an assembly bolt, and the assembly bolt is rotationally engaged with the threaded hole.

[0014] In at least some embodiments, the other end of the assembly inner ring is provided with a threaded ring groove on the inside, a separation convex ring is arranged at the threaded ring groove, a threaded convex ring is fixedly connected to the inside of the separation convex ring, and the threaded convex ring is rotationally engaged with the threaded ring groove.

[0015] Preferably, the separation convex ring is provided with the same mounting groove as the fixed convex ring, and the inside of the mounting groove is provided with an assembly bolt.

[0016] The magnetic head structure provided by the utility model has the advantages of:

[0017] The open slot is arranged on the stator, so that the winding can be conveniently embedded in the stator slot during the manufacturing of the motor, the operation is relatively simple, especially for some large motors or motors with more turns of winding and thicker wire, the construction is easier, the production efficiency is improved, the difficulty of embedding the wire is reduced, the open slot is closed by the closed insertion strip after the winding is embedded, the air gap permeance distribution is more uniform and continuous, the magnetic field fluctuation caused by the permeance change is reduced, the cogging torque is reduced, the vibration and noise during the operation of the motor are reduced, and the stability and comfort of the motor operation are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a split structure schematic diagram of the utility model.

[0020] Figure 3 It is a rotating shaft and rotor structure schematic diagram of the utility model.

[0021] Figure 4 It is the stator structure schematic diagram of the utility model.

[0022] Figure 5 It is the assembly inner ring and closed insertion strip structure schematic diagram of the utility model.

[0023] Figure 6 It is the separation convex ring structure schematic diagram of the utility model.

[0024] In the drawing, the corresponding relationship of component name and drawing number is as follows:

[0025] 1, the rotating shaft;

[0026] 101, support bearing;

[0027] 2, the rotor structure;

[0028] 201, rotor;2011, rotor core;

[0029] 3, the stator structure;

[0030] 301, stator;3011, stator winding slot;3012, isolation column;

[0031] 302, open slot;

[0032] 303, assembly inner ring;3031, closed insertion strip;3032, fixed convex ring;3033, installation groove;3034, threaded hole;

[0033] 304, assembly bolt;

[0034] 305, threaded ring groove;3051, separation convex ring;3052, threaded convex ring. DETAILED DESCRIPTION

[0035] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. Each embodiment of the utility model will be described in detail below with reference to the drawings.

[0036] Example one:

[0037] Please refer to Figures 1 to 6 :

[0038] The utility model provides a kind of magnetizing head structure for reducing gear slot torque, including rotating shaft 1 and stator structure 3;

[0039] The outer side of the rotating shaft 1 is provided with a support bearing 101, the outer side of the rotating shaft 1 is provided with a rotor structure 2, the rotor structure 2 comprises a rotor 201 and a rotor core 2011, the outer side of the rotating shaft 1 is provided with the rotor 201, the outer side of the rotor 201 is provided with the rotor core 2011, the outer side of the rotor 201 is provided with a stator 301, the inside of the stator 301 is provided with a stator winding slot 3011, the stator winding slot 3011 is provided with a separation column 3012, the bottom of the stator winding slot 3011 is provided with an opening slot 302, and the stator winding slot 3011 is arranged in an annular array of twelve groups. By providing the opening slot 302 on the stator 301, the winding can be more conveniently embedded in the stator winding slot 3011 during the manufacture of the motor, and the operation is relatively simple, especially for some large motors or windings with more turns and thicker wires, which is more easy to construct, can improve production efficiency and reduce winding difficulty.

[0040] Further, the inside of the stator 301 is provided with an assembly inner ring 303, the outer side of the assembly inner ring 303 is fixedly connected with a closed insertion strip 3031, the closed insertion strip 3031 is tightly closed in the opening slot 302, and through the setting of the closed insertion strip 3031, the air gap magnetic permeability distribution can be more uniform and continuous, the magnetic field fluctuation caused by the change of magnetic permeability is reduced, the cogging torque is reduced, and the vibration and noise during the operation of the motor are reduced.

[0041] Further, one end of the assembly inner ring 303 is fixedly connected with a fixed convex ring 3032, the fixed convex ring 3032 is provided with a mounting slot 3033, and the stator 301 is provided with a threaded hole 3034 corresponding to the mounting slot 3033. Through the setting of the fixed convex ring 3032, the mounting bolt is convenient to install, so as to fix the assembly inner ring 303 and the stator 301.

[0042] Further, the inside of the mounting slot 3033 is provided with an assembly bolt 304, the assembly bolt 304 is rotationally engaged with the threaded hole 3034, and through the setting of the assembly bolt 304, the assembly inner ring 303 and the stator 301 can be fixed.

[0043] Further, the other end of the assembly inner ring 303 is provided with a threaded ring groove 305 on the inner side, and the threaded ring groove 305 is provided with a separation convex ring 3051, the inner side of the separation convex ring 3051 is fixedly connected with a threaded convex ring 3052, the threaded convex ring 3052 is in rotation engagement with the threaded ring groove 305, the separation convex ring 3051 is provided with the same mounting groove 3033 as the fixed convex ring 3032, and the mounting groove 3033 is internally provided with an assembly bolt 304, through the arrangement of the separation convex ring 3051, the separation convex ring 3051 and the assembly inner ring 303 can be separated, the assembly inner ring 303 is conveniently mounted on the inner side wall of the stator 301, so that the closed insertion strip 3031 is inserted into the open groove 302, and then through the cooperation of the threaded ring groove 305 and the threaded convex ring 3052, the two can be assembled back, which is simple and convenient.

[0044] Embodiment two:

[0045] On the basis of embodiment one, the open groove 302 is arranged on the stator 301, so that the winding can be conveniently embedded in the stator winding slot 3011 during the manufacturing of the motor, the operation is relatively simple, easy to construct, improves the production efficiency, reduces the difficulty of embedding the wire, and then after embedding the winding, the closed insertion strip 3031 on the assembly inner ring 303 is aligned with the open groove 302, and then inserted into the open groove 302, so that the closed insertion strip 3031 can close the open groove 302, so that the air gap magnetic conductance distribution is more uniform and continuous, the magnetic field fluctuation caused by the change of the magnetic conductance is reduced, the cogging torque is reduced, the vibration and noise during the operation of the motor are reduced, the stability and comfort of the motor operation are improved, and finally through the cooperation of the threaded ring groove 305 and the threaded convex ring 3052, the other side of the separation convex ring 3051 and the assembly inner ring 303 are assembled, and then the assembly inner ring 303 and the stator 301 are fixed through the assembly bolt 304, and the assembly is completed.

[0046] In the utility model, unless otherwise specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements or the interaction relationship between two elements. Among them, the detachable mounting mode has many kinds, for example, it can be connected through the cooperation of plug-in and buckle, and for example, it can be connected through the bolt connection mode.

[0047] The above combines the embodiments and the drawings to clearly and completely describe the concept, specific structure and generated technical effects of the utility model, so as to fully understand the purpose, features and effects of the utility model.

[0048] Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments, based on the embodiments of the present application, other embodiments obtained by those skilled in the art without creative labor, all belong to the scope of protection of the present application. In addition, all the connection / connections mentioned in the text do not mean that the components are directly connected, but that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation.

[0049] The above embodiments are only used to further illustrate the present application, and cannot be understood as limiting the scope of protection of the present application. The skilled engineer in the art can make some non-essential improvements and adjustments to the present application based on the content of the above application, which falls within the scope of protection of the present application.

Claims

1. A magnetizing head structure for reducing cogging torque, comprising a rotating shaft (1) and a stator structure (3); The outer side of the rotating shaft (1) is provided with a supporting bearing (101), the outer side of the rotating shaft (1) is provided with a rotor structure (2), the rotor structure (2) comprises a rotor (201) and a rotor core (2011), the outer side of the rotating shaft (1) is provided with the rotor (201), the outer side of the rotor (201) is provided with the rotor core (2011), characterized in that: The outer side of the rotor (201) is provided with a stator (301); The inside of the stator (301) is provided with stator winding grooves (3011), and the stator winding grooves (3011) are provided with isolation columns (3012) therebetween, and the bottom of the stator winding grooves (3011) is provided with an open groove (302).

2. A magnetizing head structure for reducing cogging torque as defined in claim 1, characterized in that: The annular array of the stator winding grooves (3011) has twelve groups.

3. A magnetizing head structure for reducing cogging torque as defined in claim 1, wherein: The inside of the stator (301) is provided with an assembly inner ring (303), and the outer side of the assembly inner ring (303) is fixedly connected with a closed insertion strip (3031), which is tightly closed in the open groove (302).

4. A magnetizing head structure for reducing cogging torque as defined in claim 3, wherein: One end of the assembly inner ring (303) is fixedly connected with a fixed convex ring (3032), and the fixed convex ring (3032) is provided with a mounting groove (3033), and the stator (301) is provided with a threaded hole (3034) corresponding to the mounting groove (3033).

5. A magnetizing head structure for reducing cogging torque as defined in claim 4, wherein: The inside of the mounting groove (3033) is provided with an assembly bolt (304), and the assembly bolt (304) is in rotational engagement with the threaded hole (3034).

6. A magnetizing head structure for reducing cogging torque as defined in claim 3, wherein: The other end of the assembly inner ring (303) is provided with a threaded ring groove (305) on the inside, and the threaded ring groove (305) is provided with a separation convex ring (3051), and the inside of the separation convex ring (3051) is fixedly connected with a threaded convex ring (3052), and the threaded convex ring (3052) is in rotational engagement with the threaded ring groove (305).

7. A magnetizing head structure for reducing cogging torque as defined in claim 6, wherein: The separation convex ring (3051) is provided with the same mounting groove (3033) as the fixed convex ring (3032), and the inside of the mounting groove (3033) is provided with an assembly bolt (304).

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