CN107946021B - Magnetizing head for motor and magnetizing device with same - Google Patents

Abstract

The invention discloses a magnetizing head for a motor and magnetizing equipment with the same, wherein the magnetizing head is suitable for being inserted into a magnetic ring of the motor to magnetize the magnetic ring, and comprises: the iron core comprises a plurality of iron core teeth, the inner ends of two connected iron core teeth are connected with each other, and the outer ends of the two connected iron core teeth are spaced from each other; the winding comprises a plurality of pole windings, and the pole windings are wound on the iron core teeth in a one-to-one correspondence mode and are insulated from the iron core teeth. The magnetizing head for the motor according to the embodiment of the invention has smaller volume, can be used for magnetizing from the inside of the magnetic ring to the outside, is convenient for assembling the magnetic ring, and has simpler winding, higher groove filling rate and better magnetizing effect.

Description

Magnetizing head for motor and magnetizing device with same

Technical Field

The invention relates to the technical field of magnetizing equipment, in particular to a magnetizing head for a motor and magnetizing equipment with the same.

Background

The outer rotor motor is generally applied to various small household appliance industries due to simple structure, and is particularly widely applied in the fields of small household appliances with relatively low power, such as small table fans, small fans, fan heaters, low-power purifiers and the like. With the requirement of cost pressure of an outer rotor motor, annular magnetic stripes are adopted more and more, the multi-pole magnetizing technology of the annular magnetic stripes is complex, the conventional magnetizing mode generally adopts a mode of firstly magnetizing and then assembling, and the process is complex.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the magnetizing head for the motor, the magnetizing head for the motor can be used for magnetizing from the inside of the magnetic ring to the outside, and the magnetizing effect is better.

The invention also provides a magnetizing device with the magnetizing head.

According to the embodiment of the invention, the magnetizing head for the motor is suitable for being inserted into a magnetic ring of the motor to magnetize the magnetic ring, and comprises: the iron core comprises a plurality of iron core teeth, the inner ends of two connected iron core teeth are connected with each other, and the outer ends of the two connected iron core teeth are spaced from each other; the winding comprises a plurality of pole windings, and the pole windings are wound on the iron core teeth in a one-to-one correspondence mode and are insulated from the iron core teeth.

The magnetizing head for the motor according to the embodiment of the invention has smaller volume, can be used for magnetizing from the inside of the magnetic ring to the outside, is convenient for assembling the magnetic ring, and has simpler winding, higher groove filling rate and better magnetizing effect.

In addition, the magnetic charger head for the motor according to the above embodiment of the present invention may further have the following additional technical features:

the head charger for a motor according to an embodiment of the present invention further includes: and the magnetic conducting sheets are arranged at the outer ends of the iron core teeth in a one-to-one correspondence manner.

According to some embodiments of the invention, the charge head for a motor further comprises: and the pouring sealant layer is at least filled in the space surrounded by the iron core.

Furthermore, the encapsulating adhesive layer is an epoxy resin adhesive layer.

In some embodiments of the present invention, a head charger for a motor further comprises: the heat dissipation piece, at least a part of heat dissipation piece is established in the casting glue layer.

Further, the heat dissipation member is arranged in the middle through hole of the iron core in a penetrating mode.

According to some embodiments of the invention, the heat sink comprises: the two radiating end parts are respectively positioned at the two axial ends of the iron core; and the heat dissipation connecting parts are connected with the two heat dissipation end parts and penetrate through the middle through hole.

Further, the heat dissipating end portion is substantially annular extending in a circumferential direction of the core.

In some embodiments of the present invention, the heat dissipation connecting portion extends linearly in an axial direction of the core.

According to some embodiments of the invention, the heat sink is a unitary piece.

Further, the heat dissipation member extends from one axial end of the iron core to the other axial end and then to one axial end.

In some embodiments of the present invention, an inner end of each of the core teeth is provided with a concave portion and a convex portion at both ends of the core in the circumferential direction, and two adjacent core teeth are connected to each other by fitting of the concave portion and the convex portion.

According to some embodiments of the invention, the head for a motor further comprises: the base, the axial one end of iron core is established on the base, the other end of iron core is suitable for inserting and is established in the magnetic ring.

Furthermore, a wire outlet hole is formed in the base, and a wiring end of the winding extends out of the wire outlet hole.

In some embodiments of the present invention, the magnetic conductive plate is bonded to the core teeth.

Further, the head charger for a motor further comprises: the insulation frames are arranged on the iron core teeth in a one-to-one correspondence mode, and each pole winding is wound on the corresponding insulation frame.

Further, each of the core teeth includes: the inner end parts of the iron cores of two adjacent iron core teeth are connected with each other; the outer end part of the iron core; the iron core connecting part is connected with the inner end part of the iron core and the outer end part of the iron core, and the insulating frame is sleeved on the iron core connecting part.

According to some embodiments of the invention, the insulating frame includes, in a radial direction of the core: an insulated inner end portion covering at least a part of an outer side surface of the core inner end portion; an insulated outer end portion covering at least a part of an inner side surface of the iron core outer end portion; the insulation connecting part is connected between the insulation inner end part and the insulation outer end part and covers the iron core connecting part, and the pole winding is wound on the insulation connecting part.

Furthermore, the insulating inner end parts of two adjacent insulating frames are connected in an inserting mode.

In some embodiments of the present invention, in a winding direction of the pole winding, the insulating frame includes: the iron core comprises a first insulating part and a second insulating part, one end of the first insulating part is rotatably connected with one end of the second insulating part, the other end of the first insulating part is detachably connected with the other end of the second insulating part, and an installation opening is formed when the iron core connecting part is assembled with the insulating frame.

Further, one end of the first insulating portion and one end of the second insulating portion are flexibly connected to be rotatably connected.

According to some embodiments of the invention, the other end of the first insulating portion is connected to the other end of the second insulating portion in a plugging manner.

Furthermore, the other end of the first insulating part is provided with a first slot and a first inserting tongue, and the other end of the second insulating part is provided with a second inserting tongue suitable for being inserted into the first slot and a second slot used for being inserted into the first inserting tongue.

Optionally, the motor is an external rotor motor or a dc brushless motor.

The magnetizing apparatus for the outer rotor motor according to an embodiment of the present invention includes the magnetizing head for the motor according to an embodiment of the present invention.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of the internal structure of a charging head according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an external structure of a charging head according to an embodiment of the present invention;

FIG. 3 is a schematic view of a process for magnetizing a head according to an embodiment of the present invention;

FIG. 4 is an exploded view of a process of magnetizing a head according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an installation process of a head charger according to an embodiment of the invention;

FIG. 6 is a schematic diagram of a configuration of core teeth of a charge head according to an embodiment of the invention;

FIG. 7 is a top view of a core tooth of a charge head according to an embodiment of the present invention;

FIG. 8 is an exploded view of the core of a charge head according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of the structure of the core of a charge head according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a state of an insulating frame of a head charger according to an embodiment of the present invention;

FIG. 11 is a schematic structural view illustrating another state of an insulating frame of a head charger according to an embodiment of the present invention;

FIG. 12 is a front view of a state of an insulating frame of a head charger according to an embodiment of the present invention;

FIG. 13 is a top view of a state of an insulating frame of a head charger according to an embodiment of the present invention;

FIG. 14 is an exploded view of the assembly of the insulating frame of the head charger according to an embodiment of the present invention;

FIG. 15 is an assembly view of an insulation bracket of a head charger according to an embodiment of the present invention.

Reference numerals:

a charging head 100;

an iron core 10; a middle through-hole 101; core teeth 11; a recess 111; a convex portion 112; an iron core inner end portion 113; core outer end 114; a core connecting portion 115;

a magnetic conductive sheet 20;

a winding 30; a pole winding 301; a terminal 302;

a potting adhesive layer 40;

a heat sink 50; a heat dissipating end 501; a heat dissipation connecting portion 502; a water inlet end 503; a water outlet end 504;

a base 60; a line hole 601;

an insulating frame 70; an insulated inner end portion 71; insulated outer ends 72; an insulating connection portion 73; a first insulating portion 74; a first slot 741; a first insertion tongue 742; a second insulating portion 75; a second slot 751; a second tongue 752; a mounting opening 76;

a magnetic ring 80; a motor housing 81.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below are exemplary embodiments for explaining the present invention with reference to the drawings and should not be construed as limiting the present invention, and those skilled in the art can make various changes, modifications, substitutions and alterations to the embodiments without departing from the principle and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

A charge head 100 for a motor according to an embodiment of the present invention is described below with reference to fig. 1 to 15.

Referring to fig. 1 to 15, a head charger 100 for a motor according to an embodiment of the present invention may include: core 10 and windings 30.

Specifically, the iron core 10 has an overall ring shape, the ring-shaped iron core 10 may include a plurality of iron core teeth 11, and inner ends of two connected iron core teeth 11 may be connected to each other. Here, the inner end refers to an end of the core teeth 11 close to the axis of the annular core 10, and the outer end refers to an end of the core teeth 11 away from the axis of the annular core 10. The winding 30 may include a plurality of pole windings 301, the plurality of pole windings 301 may be wound on the plurality of core teeth 11 in a one-to-one correspondence, and the plurality of pole windings 301 and the core teeth 11 are insulated from each other. When the magnetic ring is magnetized, the magnetizing head 100 may be inserted into the magnetic ring 80 of the motor, and then the winding 301 is energized to generate a magnetic field, so as to realize the magnetizing of the magnetic ring 80.

It should be noted that, here, the number of the core teeth 11 and the number of the pole windings 301 may be flexibly set according to actual situations, the number of the core teeth 11 and the number of the pole windings 301 are equal to the number of magnetized poles, and the core teeth 11 and the pole windings 301 are arranged in one-to-one correspondence with each pole.

In the related art, the multi-pole magnetizing technology of the annular magnetic stripe is complex, the magnetizing mode is that the magnetizing head is sleeved outside the annular magnetic stripe to magnetize the annular magnetic stripe, and then the annular magnetic stripe is assembled, so that the assembling difficulty of the magnetized annular magnetic stripe can cause the process to be complex, and the magnetizing head has large volume, heavy weight and higher production cost.

In the invention, the magnetizing head 100 can be inserted into the magnetic ring 80 for magnetizing, so that the magnetic ring 80 and the motor shell 81 can be assembled firstly and then magnetized, and the magnetic ring 80 has no magnetism during assembly, so that the assembly is easier. And the magnetic charging head 100 which can be inserted into the magnetic ring 80 has smaller volume and lighter weight, which is beneficial to reducing the production cost.

In addition, the core 10 of the charger head 100 includes a plurality of core teeth 11, and the charger head 100 may be manufactured by winding the pole winding 301 around the core teeth 11 and then assembling the core teeth 11 wound with the pole winding 301 into the charger head 100. The structure that the iron core teeth 11 can be separated enables the pole winding 301 to be wound more simply, the slot filling rate of the pole winding 301 can be higher, and the magnetizing effect of the magnetizing head 100 is better.

The magnetizing head 100 for the motor according to the embodiment of the invention has a smaller volume, can be used for magnetizing from the inside of the magnetic ring 80 to the outside, is convenient for assembling the magnetic ring 80, and has simpler winding of the magnetizing head 100, higher slot filling rate and better magnetizing effect.

The charging head 100 for an electric motor according to an embodiment of the present invention may include a plurality of magnetic conductive plates 20, as shown in fig. 1 to 4, the magnetic conductive plates 20 may include a plurality of magnetic conductive plates 20, and a plurality of magnetic conductive plates 20 may be disposed at outer ends of the plurality of core teeth 11 in a one-to-one correspondence manner, it is understood that the number of magnetic conductive plates 20 is equal to the number of charging poles to achieve a magnetic conductive effect. In addition, the shape of the magnetic conductive pieces 20 may be configured according to the shape of the magnetic ring 80, for example, in the specific embodiment shown in fig. 3 and 4, the magnetic ring 80 is a circular ring, and the plurality of magnetic conductive pieces 20 are arranged at intervals to form a circular ring substantially, and for example, when the magnetic ring 80 is a step shape, the plurality of magnetic conductive pieces 20 may also be arranged at intervals to form a step shape substantially, so that the shape of the magnetic conductive pieces 20 is more adapted to the magnetic ring 80, which is beneficial to improving the magnetizing effect.

Further, the magnetic conductive plate 20 is fixedly connected with the iron core teeth 11 to ensure that the magnetic conductive plate 20 and the iron core teeth 11 can be arranged in a one-to-one correspondence manner and are not easy to be dislocated, and the connection mode of the magnetic conductive plate 20 and the iron core teeth 11 is not particularly limited, for example, the magnetic conductive plate 20 and the iron core teeth 11 can be connected in a bonding manner, the connection mode is simple and firm and reliable in connection, and certainly, the magnetic conductive plate 20 and the iron core teeth 11 can also be connected in a clamping manner and the like, and only the requirement that the magnetic conductive plate 20 and the iron core teeth 11 are fixedly connected needs to be met.

According to some embodiments of the present invention, as shown in fig. 2 and 4, the magnetic filler head 100 may further include an encapsulating layer 40, and the encapsulating layer 40 may be filled in a space surrounded by the core 10. On one hand, the encapsulating adhesive layer 40 can bond all the components of the magnetic filling head 100 into a whole, so that the structure of the magnetic filling head 100 is more compact and firm, and the mechanical strength and the shock resistance of the magnetic filling head 100 are improved; on the other hand, the encapsulating layer 40 can encapsulate the exposed portion of the magnetic head 100 to prevent the exposed portion from being affected by moisture and corrosion.

It should be noted that the potting adhesive layer 40 is not limited to be filled in the space surrounded by the iron core 10, and the potting adhesive layer 40 can also expand the filling range according to the actual requirement, so that the sealing effect is better, in other words, the potting adhesive layer 40 is at least filled in the space surrounded by the iron core 10.

Furthermore, the potting adhesive layer 40 may be an epoxy adhesive layer, which has stable physical and chemical properties, excellent adhesive strength to the surface of a metal material, good dielectric properties, small set shrinkage, good dimensional stability of a product, high hardness, good flexibility, and stability to alkali and most solvents, and is beneficial to improving the strength of the magnetic head 100 structure and prolonging the service life by adopting epoxy adhesive layer potting.

Of course, in the present invention, the material of the potting adhesive layer 40 is not limited to epoxy resin, and in other embodiments of the present invention, the material of the potting adhesive layer 40 may also be silicone or polyurethane, which is within the protection scope of the present invention.

In some embodiments of the present invention, as shown in fig. 1 and 4, the head charger 100 for a motor may further include a heat sink 50, and the heat sink 50 may be disposed within the potting layer 40. Because the current of the magnetic filler head 100 is large in the using process, a large amount of heat can be generated, the sensitivity of parts inside the magnetic filler head 100 is reduced and even damaged due to overhigh temperature, and the temperature inside the potting adhesive layer 40 can be reduced by the heat dissipation member 50, so that the heat dissipation member 50 can prevent the parts in contact with the potting adhesive layer 40 from overhigh temperature, and the normal and safe operation of the magnetic filler head 100 can be ensured. Of course, the position of the heat dissipation member 50 is not limited thereto, and the range of the heat dissipation member 50 may be larger according to the requirement of heat dissipation, that is, at least a portion of the heat dissipation member 50 is disposed in the potting adhesive layer 40.

According to some embodiments of the present invention, the heat sink 50 may be a hollow tube, and cooling water may flow in from an inlet of the hollow tube and flow out from an outlet of the hollow tube to remove heat in the magnetic head 100. The material of the hollow tube is not particularly limited, and the hollow tube can be made of copper, iron, aluminum and other materials which are easy to conduct heat according to the actual requirement.

Referring to fig. 1, in some embodiments of the present invention, the heat dissipation member 50 may be inserted into the central through hole of the iron core 10, and the heat dissipation member 50 dissipates heat from the inner side of the iron core 10 with poor self-heat dissipation effect, on one hand, the heat dissipation effect of the iron core 10 may be enhanced, and on the other hand, the space of the central through hole of the iron core 10 may be fully utilized, so that the space utilization is more sufficient, which is beneficial to reducing the volume of the magnetic head 100, and the structural design is more reasonable.

Further, as shown in fig. 4, the heat sink 50 may include: two heat dissipating end portions 501 and a heat dissipating connecting portion 502. The two heat dissipation end portions 501 may be located at two axial ends of the iron core 10, the heat dissipation connecting portion 502 may be disposed through the middle through hole of the iron core 10, and the heat dissipation connecting portion 502 may connect the two heat dissipation end portions 501. Therefore, the heat dissipation member 50 can dissipate heat not only at the inner side of the iron core 10, but also at the two axial ends of the iron core 10, so that the heat dissipation member 50 has a larger coverage area and a better heat dissipation effect.

In addition, as shown in fig. 4, the heat dissipation end portion 501 may be substantially annular extending along the circumferential direction of the core 10, so that the coverage area of the heat dissipation end portion 501 at both ends of the core 10 in the axial direction is larger, and the heat dissipation effect is further improved. The heat dissipation connecting portion 502 can extend along the axial direction of the iron core 10, so that the structure is simpler, and the processing procedure can be simplified.

It is understood that, in order to further improve the heat dissipation effect, the heat dissipation end portion 501 may extend in a spiral shape along the circumferential direction of the core 10, and the heat dissipation connection portion 501 may also extend in a spiral cylindrical shape along the axial direction of the core 10 and the circumferential direction of the central through hole, which are within the protection scope of the present invention.

According to some embodiments of the present invention, as shown in fig. 4, the heat sink 50 may be a single piece, that is, the two heat dissipating end portions 501 and the heat dissipating connecting portion 502 may be integrally formed, so as to reduce the number of parts of the magnetic charger head 100 and reduce the assembly process. Moreover, in the embodiment where the heat sink 50 is a hollow tube into which cooling water can be introduced, the heat sink 50 formed integrally may include a water inlet and a water outlet, so as to reduce the number of openings for installing the water inlet and the water outlet on the magnetic head 100, and the magnetic head 100 has a simpler structure and a neater appearance.

Further, the integrated heat sink 50 may form one heat dissipating end portion 501 from one axial end of the core 10, then extend along the axis of the core 10 to form the heat dissipating connecting portion 502, form another heat dissipating end portion 501 at the other axial end of the core 10, and then extend along the axis of the core 10 to form the heat dissipating connecting portion 502 back to the one axial end of the core 10, and the heat sink 50 is simple and firm in structure.

In some embodiments of the present invention, as shown in fig. 6 to 9, each core tooth 11 may be provided with a concave portion 111 and a convex portion 112, the concave portion 111 and the convex portion 112 being respectively located at both ends of the inner end of the core tooth 11 in the circumferential direction of the core 10, and adjacent two core teeth 11 may be connected to each other by the engagement of the concave portion 111 and the convex portion 112. For example, in the example shown in fig. 8 and 9, the concave portion 111 is a groove formed by recessing a part of the side of the inner end of the core tooth 11 at one end in the circumferential direction of the core 10 toward the other end, and the convex portion 112 is a boss formed by protruding a part of the side of the inner end of the core tooth 11 at the other end in the circumferential direction of the core 10. The boss of an iron core tooth 11 can insert the recess of another iron core tooth 11 and realize the connection of two iron core teeth 11, and the inner of a plurality of iron core teeth 11 links to each other in proper order and can inject the middle part through-hole, and the recess and the boss of a plurality of iron core teeth 11 connect gradually and realize the equipment of iron core 10.

According to some embodiments of the present invention, as shown in fig. 1 to 4, the magnetic charger head 100 may further include a base 60, one axial end of the iron core 10 may be disposed on the base 60, and the other end of the iron core 10 may be inserted into the magnetic ring 80, so that the iron core 10 is more firmly fixed, and when the magnetic charger head 100 is in use, the base 60 may be placed, so that the vibration of the magnetic charger head 100 may be effectively reduced, and the magnetic charger head 100 is more stable and reliable.

Further, as shown in fig. 1-3, a wire outlet hole 601 may be formed on the base 60, and the terminal 302 of the winding 30 may extend out from the wire outlet hole 601, so that not only the terminal 302 of the winding 30 may be prevented from swinging freely to affect the magnetizing effect, but also the appearance of the magnetizing head 100 is more neat and beautiful.

In addition, in the embodiment of the heat dissipation member 50 formed by the hollow tube, the base 60 may further have a tube hole, the water inlet end 503 and the water outlet end 504 of the hollow tube may extend out from the tube hole, and the tube hole may fix the positions of the water inlet end 503 and the water outlet end 504, so that the water inlet and the water outlet are smoother, and the circuit is prevented from being damaged by the overflow of water flow.

According to a further embodiment of the present invention, as shown in fig. 4, the charging head 100 may further include a plurality of insulation frames 70, the plurality of insulation frames 70 may be disposed on the plurality of core teeth 11 in a one-to-one correspondence, each of the pole windings 301 may be wound on the corresponding insulation frame 70, and the insulation frames 70 may insulate the core teeth 11 from the pole windings 301, so that the pole windings 301 may be effectively prevented from being shorted by the core teeth 11, and thus, the charging head is safer and more reliable.

In some embodiments of the present invention, as shown in fig. 6 and 7, each core tooth 11 may include: a core inner end portion 113, a core outer end portion 114, and a core connecting portion 115, and the core connecting portion 115 may connect the core inner end portion 113 and the core outer end portion 114. The core inner end portions 113 of two adjacent core teeth 11 may be connected to each other to achieve the connection of the adjacent core teeth 11. In addition, as shown in fig. 5, the insulating frame 70 may be sleeved on the core connecting portion 115 to connect the insulating frame 70 and the core teeth 11, and the connection structure is simple.

Further, as shown in fig. 10 to 15, in a radial direction of the core 10, the insulation holder 70 may include: an insulated inner end 71, an insulated outer end 72 and an insulated connection 73, the insulated connection 73 being connected between the insulated inner end 71 and the insulated outer end 72. The insulating inner end portion 71 may cover an outer side surface of the core inner end portion 113, the insulating outer end portion 72 may cover an inner side surface of the core outer end portion 114, the insulating connection portion 73 may cover the core connection portion 115, and the pole winding 301 may be wound on the insulating connection portion 73. Therefore, the insulation frame 70 can insulate the iron core connecting part 115 from the pole winding 301, and can insulate the iron core inner end part 113 and the iron core outer end part 114 from the pole winding 301, so that the insulation is more thorough, and the short-circuit prevention effect is better.

Further, as shown in fig. 14 and 15, the insulating inner end portions 71 of two adjacent insulating frames 70 may be connected by plugging to realize the connection of a plurality of insulating frames 70. For example, in the specific embodiment shown in fig. 10 to 15, the insulated inner end portion 71 may be formed as a first step surface and a second step surface at both ends of the iron core 10 in the circumferential direction, and the bending directions of the first step surface and the second step surface are opposite. The first step surface of one insulated inner end part 71 can be plugged with the second step surface of the other insulated inner end part 71, and the connection structure is simple. Of course, the connection structure of the insulation holders 70 is not limited to the plugging structure shown in fig. 10 to 15, and only the requirement that the insulation inner end portions 71 of two adjacent insulation holders 70 are connected to realize the connection of a plurality of insulation holders 70 is satisfied.

In some embodiments of the present invention, as shown in fig. 5, 10 and 11, in the winding direction of the pole winding 301, the insulation holder 70 may include: a first insulating portion 74 and a second insulating portion 75. One end of the first insulating portion 74 and one end of the second insulating portion 75 are rotatably connected, and the other end of the first insulating portion 74 and the other end of the second insulating portion 75 are detachably connected. When the core connecting portion 115 is assembled with the insulation holder 70, the other end of the first insulation portion 74 and the other end of the second insulation portion 75 may be separated to form the installation opening 76, so that the insulation holder 70 may be fitted over the core connecting portion 115 through the installation opening 76.

Further, one end of the first insulating portion 74 and one end of the second insulating portion 75 can be flexibly connected, so that one end of the first insulating portion 74 can rotate relative to one end of the second insulating portion 75, the flexible connection is not prone to breaking in the rotating process, the flexible connection is easy to process and manufacture, and after the iron core connecting portion 115 and the insulating frame 70 are assembled, the flexible connection can enable the other end of the first insulating portion 74 and the other end of the second insulating portion 75 to be automatically closed, and the assembly is simpler and more convenient.

In addition, as shown in fig. 10 to 12, the other end of the first insulating portion 74 and the other end of the second insulating portion 75 may be connected by plugging, further, the other end of the first insulating portion 74 may be provided with a first slot 741 and a first tongue 742, and the other end of the second insulating portion 75 may be provided with a second slot 751 and a second tongue 752. The second insertion tongue 752 may be inserted into the first insertion groove 741, and the first insertion tongue 741 may be inserted into the second insertion groove 752 to connect the other end of the first insulating portion 74 with the other end of the second insulating portion 75, so that the connection structure is simple and convenient. Of course, the connection structure of the other end of the first insulating portion 74 and the other end of the second insulating portion 75 is not limited to the plug-in structure shown in fig. 10 to 15, and only the requirement that the other end of the first insulating portion 74 and the other end of the second insulating portion 75 are connected may be satisfied.

Alternatively, in the present invention, the motor may be an external rotor motor or a dc brushless motor, etc., which is within the protection scope of the present invention.

The magnetizing apparatus for an outer rotor motor according to an embodiment of the present invention includes a magnetizing head 100 for a motor according to an embodiment of the present invention. Because the magnetizing head 100 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, the magnetizing apparatus according to the embodiment of the present invention also has the corresponding technical effects, has a smaller volume, can magnetize from the inside of the magnetic ring 80 to the outside, facilitates the assembly of the magnetic ring 80, and has the advantages of simpler winding of the magnetizing head 100, higher slot filling rate and better magnetizing effect.

The assembly process of the magnetic charger head 100 according to one embodiment of the present invention is described in detail below with reference to the accompanying drawings, it being understood that the following description is illustrative only and is not to be construed as limiting the invention.

As shown in fig. 5, first, the other end of the first insulating portion 74 is separated from the other end of the second insulating portion 75, the mounting opening 76 is opened, the core connecting portion 115 of the core tooth 11 is placed in the mounting opening 76, the other end of the first insulating portion 74 and the other end of the second insulating portion 75 are automatically closed to restore the original state, and the insulating frame 70 wraps the core connecting portion 115 of the core tooth 11; then, winding a pole winding 301 on the insulation connection part 73 of the insulation frame 70; after the winding is finished, the steps are continuously repeated until the winding of each limit group 301 is finished; then, incompletely splicing the wound pole winding 301, and reserving a placement position of the heat dissipation piece 50; placing the heat dissipation member 50 into the central through hole of the incompletely spliced iron core 10; after the heat dissipation piece 50 is placed, the remaining wound pole windings 301 are spliced to form a complete circle; after rounding, the magnetic sheets 20 are adhered to the outer surface of the outer end 114 of the iron core in one-to-one correspondence; after the magnetic conductive sheet 20 is solidified, the base 60 is installed; finally, the exposed part is sealed and sealed with epoxy resin glue for molding. Thereby, the assembly of the charger head 100 is completed.

Other constructions and operations of the magnetizing head 100 and the magnetizing apparatus according to the embodiments of the present invention will be known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the terms "embodiment," "particular embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples without interference or contradiction.

Claims (25)

1. A magnetizing head for a motor, the magnetizing head adapted to be inserted into a magnetic ring of the motor to magnetize the magnetic ring, the magnetizing head comprising:

the iron core comprises a plurality of iron core teeth, the inner ends of two connected iron core teeth are connected with each other, and the outer ends of the two connected iron core teeth are spaced from each other;

the winding comprises a plurality of pole windings, and the pole windings are wound on the iron core teeth in a one-to-one correspondence mode and are insulated from the iron core teeth.

2. The head of claim 1, further comprising:

and the magnetic conducting sheets are arranged at the outer ends of the iron core teeth in a one-to-one correspondence manner.

3. The head of claim 1, further comprising:

and the pouring sealant layer is at least filled in the space surrounded by the iron core.

4. The head filler for an electric motor of claim 3, wherein the potting adhesive layer is an epoxy adhesive layer.

5. The head of claim 3, further comprising:

the heat dissipation piece, at least a part of heat dissipation piece is established in the casting glue layer.

6. The head filler for a motor of claim 5, wherein the heat sink is disposed through a central through hole of the core.

7. The head filler for a motor of claim 6, wherein the heat sink comprises:

the two radiating end parts are respectively positioned at the two axial ends of the iron core;

and the heat dissipation connecting parts are connected with the two heat dissipation end parts and penetrate through the middle through hole.

8. The head of claim 7, wherein the heat dissipating end portion is generally annular extending along a circumferential direction of the core.

9. The head of claim 7, wherein the heat dissipating connection extends linearly along an axial direction of the core.

10. The head filler for an electric motor of claim 7, wherein the heat sink is a unitary piece.

11. The head filler for an electric motor of claim 10, wherein the heat sink extends from one axial end of the core to the other axial end to the one axial end.

12. The charging head for an electric motor according to claim 1, wherein an inner end of each of the core teeth is provided with a concave portion and a convex portion at both ends of the core in a circumferential direction, respectively, and adjacent two of the core teeth are connected to each other by fitting of the concave portions and the convex portions.

13. The head of claim 1, further comprising:

the base, the axial one end of iron core is established on the base, the other end of iron core is suitable for inserting and is established in the magnetic ring.

14. The head of claim 13, wherein the base has an outlet, and the terminal of the winding extends from the outlet.

15. The charging head for an electric motor of claim 2, wherein said flux plate is adhesively attached to said core teeth.

16. The head for an electric motor of any one of claims 1-15, further comprising:

the insulation frames are arranged on the iron core teeth in a one-to-one correspondence mode, and each pole winding is wound on the corresponding insulation frame.

17. The charging head for an electric motor of claim 16, wherein each of said core teeth comprises:

the inner end parts of the iron cores of two adjacent iron core teeth are connected with each other;

the outer end part of the iron core;

the iron core connecting part is connected with the inner end part of the iron core and the outer end part of the iron core, and the insulating frame is sleeved on the iron core connecting part.

18. The charging head for an electric motor according to claim 17, wherein the insulating frame comprises, in a radial direction of the core:

an insulated inner end portion covering at least a part of an outer side surface of the core inner end portion;

an insulated outer end portion covering at least a part of an inner side surface of the iron core outer end portion;

the insulation connecting part is connected between the insulation inner end part and the insulation outer end part and covers the iron core connecting part, and the pole winding is wound on the insulation connecting part.

19. The head filler for an electric motor of claim 18, wherein said insulated inner ends of adjacent two of said insulation frames are connected by plugging.

20. The charging head for an electric machine according to claim 17, wherein the insulating frame comprises, in a winding direction of the pole winding:

the iron core comprises a first insulating part and a second insulating part, one end of the first insulating part is rotatably connected with one end of the second insulating part, the other end of the first insulating part is detachably connected with the other end of the second insulating part, and an installation opening is formed when the iron core connecting part is assembled with the insulating frame.

21. The head of claim 20, wherein one end of the first insulating portion and one end of the second insulating portion are flexibly connected to be rotatably connected.

22. The head of claim 20, wherein the other end of the first insulating portion is connected to the other end of the second insulating portion by plugging.

23. The head charger head for an electric motor according to claim 22, wherein the other end of the first insulating portion is provided with a first insertion groove and a first insertion tongue, and the other end of the second insulating portion is provided with a second insertion tongue adapted to be inserted into the first insertion groove and a second insertion groove for inserting the first insertion tongue.

24. The charging head for an electric motor according to claim 1, wherein the electric motor is an external rotor motor or a dc brushless motor.

25. A magnetizing apparatus for an electric motor, comprising a magnetizing head for an electric motor according to any one of claims 1 to 24.

Images