CN107946021B - Magnetizing head for electric motor and magnetizing device having the 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 electric motor and magnetizing device having the same

technical field

The present invention relates to the technical field of magnetizing equipment, and more particularly, to a magnetizing head for a motor and a magnetizing equipment having the same.

Background technique

Due to its simple structure, external rotor motors are widely used in various small household appliances industries, and are especially widely used in household appliances with relatively small power such as small table fans, small fans, heaters and low-power purifiers. With the cost pressure of the outer rotor motor, more and more annular magnetic strips are used. The multi-pole magnetization technology of annular magnetic strips is more complicated. .

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a magnetizing head for a motor. The magnetizing head for a motor can be magnetized from the inside of the magnetic ring to the outside, and the magnetization effect is better.

The present invention also provides a magnetizing device having the above-mentioned magnetizing head.

According to a magnetic charging head for a motor according to an embodiment of the present invention, the magnetic charging head is adapted to be inserted into a magnetic ring of the motor to magnetize the magnetic ring, and the magnetic charging head includes: a ring-shaped iron core , the iron core includes a plurality of iron core teeth, the inner ends of the two connected iron core teeth are connected to each other, and the outer ends are spaced apart from each other; the winding, the winding includes a plurality of pole windings, and the plurality of the pole windings are one Correspondingly, it is wound around a plurality of the iron core teeth and is insulated from the iron core teeth from each other.

The magnetizing head used for the motor according to the embodiment of the present invention has a smaller volume, and can be magnetized from the inside of the magnet ring to the outside, which is convenient for the assembly of the magnet ring, and the winding of the magnetizing head is simpler, the slot filling rate is higher, and the magnetizing effect is better. it is good.

In addition, the magnetic charging head for the motor according to the above-mentioned embodiments of the present invention may also have the following additional technical features:

The magnetic charging head for a motor according to an embodiment of the present invention further includes: a plurality of magnetic conductive sheets, and the plurality of magnetic conductive sheets are provided on the outer ends of the plurality of iron core teeth in a one-to-one correspondence.

According to some embodiments of the present invention, the magnetic charging head for a motor further includes: a potting glue layer, and the potting glue layer is filled at least in the space surrounded by the iron core.

Further, the potting adhesive layer is an epoxy resin adhesive layer.

In some embodiments of the present invention, the magnetic charging head for a motor further includes: a heat dissipation member, at least a part of the heat dissipation member is disposed in the potting glue layer.

Further, the heat dissipating member is penetrated in the middle through hole of the iron core.

According to some embodiments of the present invention, the heat dissipating member includes: two heat dissipating ends, the two heat dissipating ends are respectively located at two axial ends of the iron core; and a heat dissipating connecting portion, which connects the two The heat dissipation end is penetrated in the middle through hole.

Further, the heat dissipating end is generally annular extending along the circumferential direction of the iron core.

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

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

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

In some embodiments of the present invention, the inner end of each of the iron core teeth is respectively provided with a concave portion and a convex portion at both ends in the circumferential direction of the iron core, and two adjacent iron core teeth pass through the The mating of the concave portion and the convex portion is connected to each other.

According to some embodiments of the present invention, the magnetizing head for a motor further comprises: a base, one axial end of the iron core is disposed on the base, and the other end of the iron core is adapted to be inserted into the magnetic ring Inside.

Further, a wire outlet hole is provided on the base, and the terminal of the winding protrudes from the wire outlet hole.

In some embodiments of the present invention, the magnetic conductive sheet is bonded and connected to the iron core teeth.

Further, the magnetizing head used for the motor further includes: a plurality of insulating frames, the insulating frames are arranged on the iron core teeth in a one-to-one correspondence, and each of the pole windings is wound around the corresponding on an insulating stand.

Further, each of the iron core teeth includes: an inner end portion of the iron core, the inner end portions of the iron core of two adjacent iron core teeth are connected to each other; an outer end portion of the iron core; The core connecting portion connects the inner end portion of the iron core and the outer end portion of the iron core, and the insulating frame is sleeved on the iron core connecting portion.

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

Further, the insulating inner ends of two adjacent insulating frames are connected by plugging.

In some embodiments of the present invention, in the winding direction of the pole winding, the insulating frame includes: a first insulating portion and a second insulating portion, one end of the first insulating portion and the second insulating portion One end of the first insulating part is rotatably connected, and the other end of the first insulating part and the other end of the second insulating part are detachably connected, so as to form an installation opening 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 so as to be rotatably connected.

According to some embodiments of the present invention, the other end of the first insulating portion is connected to the other end of the second insulating portion by plugging.

Further, the other end of the first insulating portion is provided with a first slot and a first insertion tongue, and the other end of the second insulating portion is provided with a second slot suitable for being inserted into the first slot. A plug tongue and a second slot for inserting the first plug tongue.

Optionally, the motor is an outer rotor motor or a DC brushless motor.

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

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

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

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

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

3 is a schematic diagram of a magnetizing process of a magnetizing head according to an embodiment of the present invention;

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

5 is a schematic diagram of an installation process of a magnetic charging head according to an embodiment of the present invention;

6 is a schematic structural diagram of an iron core tooth of a magnetic charging head according to an embodiment of the present invention;

7 is a top view of the iron core teeth of the magnetic charging head according to the embodiment of the present invention;

8 is an exploded view of an iron core of a magnetic charging head according to an embodiment of the present invention;

9 is a schematic structural diagram of an iron core of a magnetic charging head according to an embodiment of the present invention;

10 is a schematic structural diagram of a state of an insulating frame of a magnetic charging head according to an embodiment of the present invention;

11 is a schematic structural diagram of another state of the insulating frame of the magnetic charging head according to an embodiment of the present invention;

12 is a front view of a state of an insulating frame of a magnetic charging head according to an embodiment of the present invention;

13 is a top view of a state of an insulating frame of a magnetic charging head according to an embodiment of the present invention;

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

FIG. 15 is an assembly view of an insulating frame of a magnetic charging head according to an embodiment of the present invention.

Reference number:

Magnetic head 100;

Iron core 10; middle through hole 101; iron core teeth 11; concave part 111; convex part 112; iron core inner end part 113;

Magnetic conductive sheet 20;

winding 30; pole winding 301; terminal 302;

potting glue layer 40;

Heat sink 50; heat dissipation end 501; heat dissipation connection part 502; water inlet end 503; water outlet end 504;

Base 60; Line hole 601;

insulating frame 70; insulating inner end 71; insulating outer end 72; insulating connecting portion 73; first insulating portion 74; first slot 741; first tongue 742; second insulating portion 75; second slot 751 ; The second plug tongue 752; Installation opening 76;

Magnetic ring 80; motor housing 81.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention. Those of ordinary skill in the art can Various changes, modifications, substitutions and alterations can be made to these embodiments, and the scope of the invention is defined by the claims and their equivalents.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "axial", The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated devices or elements. It must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, features delimited with "first", "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

The following describes a magnetizing head 100 for a motor according to an embodiment of the present invention with reference to FIGS. 1 to 15 .

Referring to FIGS. 1-15 , a magnetizing head 100 for a motor according to an embodiment of the present invention may include: an iron core 10 and a winding 30 .

Specifically, the iron core 10 is annular as a whole, the annular iron core 10 may include a plurality of iron core teeth 11 , and the inner ends of the two connected iron core teeth 11 may be connected to each other. Here, the inner end refers to one end of the iron core tooth 11 close to the axis of the annular iron core 10 , and the outer end refers to the end of the iron core tooth 11 away from the axis of the annular iron core 10 . The winding 30 may include a plurality of pole windings 301 , and 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 magnetizing the magnetic ring, the magnetizing head 100 can be inserted into the magnetic ring 80 of the motor, and then the winding 301 is energized to generate a magnetic field to realize the magnetization of the magnetic ring 80 .

It should be noted that the number of core teeth 11 and pole windings 301 can be flexibly set according to the actual situation. The number of core teeth 11 and pole windings 301 is equal to the number of magnetizing poles for magnetization. Each pole is set in one-to-one correspondence.

In the related art, the multi-pole magnetization technology of the annular magnetic strip is relatively complicated. The magnetization method is generally to first set the magnetizing head on the outside of the annular magnetic strip to magnetize the annular magnetic strip, and then assemble the annular magnetic strip. The magnetized annular magnetic strip is difficult to assemble, which makes the process complicated, and the magnetizing head is bulky and heavy, and the production cost is high.

In the present invention, the magnetizing head 100 can be inserted into the magnet ring 80 for magnetization. Therefore, the magnet ring 80 and the motor casing 81 can be assembled first, and then magnetized. During assembly, the magnet ring 80 does not have magnetism. much easier. In addition, the magnetizing head 100 that can be inserted into the magnetic ring 80 is smaller in volume and lighter in weight, which is beneficial to reduce production costs.

In addition, the iron core 10 of the magnetic charging head 100 includes a plurality of iron core teeth 11. When manufacturing the magnetic charging head 100, the pole windings 301 can be wound on the iron core teeth 11 first, and then the iron core teeth 11 wound with the pole windings 301 can be assembled into Magnetic head 100 . The separable structure of the iron core teeth 11 makes the winding of the pole winding 301 simpler, and the slot filling rate of the pole winding 301 can be higher, and the magnetizing effect of the magnetizing head 100 is better.

According to the embodiment of the present invention, the magnetizing head 100 for a motor is smaller in size, and can be magnetized from the inside of the magnet ring 80 to the outside, which facilitates the assembly of the magnet ring 80, and the magnetizing head 100 has simpler winding and a higher slot filling rate. The magnetization effect is better.

The magnetizing head 100 for a motor according to an embodiment of the present invention may include a magnetic conductive sheet 20. As shown in FIG. 1 to FIG. 4, the magnetic conductive sheet 20 may include a plurality of magnetic conductive sheets 20, and the plurality of magnetic conductive sheets 20 may correspond to one another. It is provided on the outer ends of the plurality of iron core teeth 11, and it can be understood that the number of the magnetic conductive sheets 20 is also equal to the number of magnetizing poles to realize the magnetic conductive effect. In addition, the shape of the magnetic conductive sheet 20 can be configured according to the shape of the magnetic ring 80. For example, in the specific embodiment shown in FIG. 3 and FIG. For example, when the magnetic ring 80 is in a stepped shape, the plurality of magnetic conductive sheets 20 can also be spaced apart and generally formed in a stepped shape, so that the shape of the magnetic conductive sheet 20 is more suitable for the magnetic ring 80. It is beneficial to improve the magnetization effect.

Further, the magnetic conductive sheet 20 is fixedly connected with the iron core teeth 11 to ensure that the magnetic conductive sheet 20 and the iron core teeth 11 can be arranged in a one-to-one correspondence and are not prone to dislocation, and the connection between the magnetic conductive sheet 20 and the iron core teeth 11 is not Make special restrictions, for example, the magnetic conductive sheet 20 and the iron core teeth 11 can be bonded and connected, and the connection method is simple and the connection is firm and reliable. The requirement that the magnetic conductive sheet 20 is fixedly connected with the iron core teeth 11 is sufficient.

According to some embodiments of the present invention, as shown in FIGS. 2 and 4 , the magnetic charging head 100 may further include a potting glue layer 40 , and the potting glue layer 40 may be filled in the space surrounded by the iron core 10 . On the one hand, the potting glue layer 40 can glue all the components of the magnetic charging head 100 into a whole, making the structure of the magnetic charging head 100 more compact and firm, and improving the mechanical strength and shock resistance of the magnetic charging head 100; on the other hand, the potting glue layer 40 can The exposed part of the magnetic head 100 is sealed with glue to prevent the exposed part from being damp and corroded.

It should be noted that the potting glue layer 40 is not limited to be filled in the space surrounded by the iron core 10. According to actual needs, the potting glue layer 40 can also expand the filling range to make the sealing effect better. The encapsulant layer 40 is filled at least in the space surrounded by the iron core 10 .

Further, the potting adhesive layer 40 can be an epoxy resin adhesive layer, the epoxy resin has stable physical and chemical properties, has excellent bonding strength to the surface of metal materials, good dielectric properties, small set shrinkage, and stable product dimensions. It has good properties, high hardness, good flexibility, and is stable to alkali and most solvents. The use of epoxy resin glue layer potting is beneficial to improve the strength of the magnetic head 100 structure and prolong its service life.

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

In some embodiments of the present invention, as shown in FIG. 1 and FIG. 4 , the magnetizing head 100 for a motor may further include a heat sink 50 , and the heat sink 50 may be provided in the potting glue layer 40 . Due to the large current of the magnetic charging head 100 during use, a large amount of heat will be generated. If the temperature is too high, the sensitivity of the components inside the magnetic charging head 100 may be reduced or even damaged. The heat sink 50 can reduce the temperature in the potting glue layer 40 . Therefore, the heat sink 50 can prevent the temperature of the components in contact with the potting glue layer 40 from being too high, so as to ensure that the magnetic charging head 100 can operate normally and safely. Of course, the disposition position of the heat sink 50 is not limited to this, and the disposition range of the heat sink 50 may be larger according to the requirements of heat dissipation, that is, at least a part of the heat sink 50 is disposed in the potting glue 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 the water inlet of the hollow tube and flow out from the water outlet of the hollow tube to take away the heat in the magnetic charging head 100 . Here, the material of the hollow tube is not particularly limited. According to actual needs, the hollow tube can be made of materials that are easy to conduct heat, such as copper, iron, and aluminum.

Referring to FIG. 1 , in some embodiments of the present invention, the heat sink 50 may be inserted into the through hole in the middle of the iron core 10 , and the heat sink 50 is dissipated from the inner side of the iron core 10 with poor self-heat dissipation effect. On the one hand, the heat dissipation effect of the iron core 10 can be enhanced, and on the other hand, the space of the central through hole of the iron core 10 can be fully utilized, and the space utilization is more sufficient, which is beneficial to reduce the volume of the magnetic charging head 100 and the structure design is more reasonable.

Further, as shown in FIG. 4 , the heat dissipation member 50 may include: two heat dissipation end portions 501 and a heat dissipation connection portion 502 . The two heat dissipation ends 501 may be located at both axial ends of the iron core 10 respectively, the heat dissipation connection part 502 may pass through the central through hole of the iron core 10 , and the heat dissipation connection part 502 may connect the two heat dissipation ends 501 . Therefore, the heat sink 50 can not only dissipate heat inside the iron core 10 , but also dissipate heat at both axial ends of the iron core 10 . The heat sink 50 covers a larger area and has a better heat dissipation effect.

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

It can be 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 iron core 10, and the heat dissipation connecting portion 501 may also extend along the axial direction of the iron core 10 and the circumferential direction of the central through hole to form a spiral shape. The stud shape is all within the scope of the present invention.

According to some embodiments of the present invention, as shown in FIG. 4 , the heat dissipation member 50 may be an integral piece, that is, the two heat dissipation end portions 501 and the heat dissipation connecting portion 502 may be integrally formed, which can reduce the number of parts of the magnetic charging head 100 , reduce the assembly process. Moreover, in the embodiment in which the heat sink 50 is a hollow tube through which cooling water can pass, the integrally formed heat sink 50 may include a water inlet and a water outlet, which can reduce the number of water inlets and outlets on the magnetic charging head 100 for installing the water inlet and outlet. The number of openings of the magnetic charging head 100 is simpler and the appearance is cleaner.

Further, the integrated heat dissipation member 50 may form a heat dissipation end portion 501 from one axial end of the iron core 10 , and then extend along the axis of the iron core 10 to form a heat dissipation connection portion 502 , and form another axial end portion of the iron core 10 . A heat-dissipating end portion 501 extends along the axis of the iron core 10 to form an axial end of the heat-dissipating connecting portion 502 returning to the iron core 10 . The structure of the heat-dissipating member 50 is simple and firm.

In some embodiments of the present invention, as shown in FIGS. 6-9 , each core tooth 11 may be provided with a concave portion 111 and a convex portion 112 , and the concave portion 111 and the convex portion 112 are respectively located at the inner end of the core tooth 11 at the inner end of the core tooth 11 . At both ends of the iron core 10 in the circumferential direction, two adjacent iron core teeth 11 may be connected to each other through the cooperation of the concave portion 111 and the convex portion 112 . For example, in the examples shown in FIGS. 8 and 9 , the concave portion 111 is a groove formed by concave portion of the inner end of the core teeth 11 on the side of one end along the circumferential direction of the core 10 to the other end, and the convex The 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 along the circumferential direction of the core 10 . The boss of one iron core tooth 11 can be inserted into the groove of the other iron core tooth 11 to realize the connection of the two iron core teeth 11. The inner ends of a plurality of iron core teeth 11 are connected in sequence to define a central through hole, and a plurality of iron core teeth 11 can be connected in sequence to define a central through hole. The grooves and bosses of the core teeth 11 are connected in sequence to realize the assembly of the iron core 10 .

According to some embodiments of the present invention, as shown in FIGS. 1 to 4 , the magnetizing 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 base 60 . In the magnetic ring 80 , the iron core 10 is more firmly fixed, and can be placed through the base 60 during the use of the magnetic head 100 , which can effectively reduce the vibration of the magnetic head 100 and make the magnetic head 100 more stable and reliable.

Further, as shown in FIG. 1-FIG. 3, the base 60 may be provided with a wire outlet hole 601, and the terminal 302 of the winding 30 can protrude from the wire outlet hole 601, which can not only prevent the terminal 302 of the winding 30 from swinging at will The magnetizing effect is improved, and the appearance of the magnetizing head 100 is more neat and beautiful.

In addition, in the embodiment provided with the heat sink 50 formed by a hollow tube, the base 60 may also be provided with a tube hole, the water inlet end 503 and the water outlet end 504 of the hollow tube may protrude from the tube hole, and the tube hole may The positions of the water inlet end 503 and the water outlet end 504 are fixed to make the water in and out more smoothly and prevent the water flow from overflowing and damaging the circuit.

According to a further embodiment of the present invention, as shown in FIG. 4 , the magnetizing head 100 may further include a plurality of insulating frames 70 , and the plurality of insulating frames 70 may be provided on the plurality of core teeth 11 in a one-to-one correspondence, and each pole winding 301 It can be wound on the corresponding insulating frame 70, and the insulating frame 70 insulates the iron core teeth 11 from the pole windings 301, which can effectively prevent the pole windings 301 from being short-circuited by the iron core teeth 11, and is safer and more reliable.

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

Further, as shown in FIGS. 10-15 , in the radial direction of the iron core 10 , the insulating frame 70 may include: an insulating inner end portion 71 , an insulating outer end portion 72 and an insulating connecting portion 73 , and the insulating connecting portion 73 is connected to the insulating inner end portion 71 . Between the inner end portion 71 and the insulating outer end portion 72 . The insulating inner end portion 71 may cover the outer side of the iron core inner end portion 113 , the insulating outer end portion 72 may cover the inner side surface of the iron core outer end portion 114 , and the insulating connecting portion 73 may cover the iron core connecting portion 115 . Above, the pole winding 301 can be wound on the insulating connection part 73 . Therefore, the insulating frame 70 can not only insulate the iron core connecting portion 115 from the pole winding 301, but also insulate the iron core inner end 113 and the iron core outer end 114 from the pole winding 301, so that the insulation is more complete and the short-circuit prevention effect is better. it is good.

Further, as shown in FIG. 14 and FIG. 15 , the insulating inner ends 71 of two adjacent insulating frames 70 can be connected by plugging, so as to realize the connection of multiple insulating frames 70 . For example, in the specific embodiment shown in FIGS. 10-15 , the two ends of the insulating inner end portion 71 in the circumferential direction of the iron core 10 may be formed as a first stepped surface and a second stepped surface, and the first stepped surface It is opposite to the bending direction of the second step surface. The first stepped surface of one insulating inner end portion 71 can be plugged with the second stepped surface of the other insulating inner end portion 71, and the connection structure is simple. Of course, the connection structure of the insulating frames 70 is not limited to the plug-in structure shown in FIGS. 10-15 , and only needs to meet the requirement that the insulating inner ends 71 of two adjacent insulating frames 70 are connected to realize the connection of multiple insulating frames 70 . That's it.

In some embodiments of the present invention, as shown in FIG. 5 , FIG. 10 and FIG. 11 , in the winding direction of the pole winding 301 , the insulating frame 70 may include: a first insulating part 74 and a second insulating part 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 iron core connecting part 115 is assembled with the insulating frame 70 , the other end of the first insulating part 74 and the other end of the second insulating part 75 can be separated to form an installation opening 76 , so that the insulating frame 70 can be sleeved on the iron through the installation opening 76 . on the core connecting portion 115 .

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 be rotated relative to one end of the second insulating portion 75, and the flexible connection is not easy during the rotation process. It is easy to be broken and manufactured, and after the iron core connecting part 115 and the insulating frame 70 are assembled, the flexible connection can automatically close the other end of the first insulating part 74 and the other end of the second insulating part 75, and the assembly is simpler and more convenient. .

In addition, as shown in FIGS. 10-12 , the other end of the first insulating portion 74 and the other end of the second insulating portion 75 can be connected by plugging, and further, the other end of the first insulating portion 74 can be provided with a first plug The slot 741 and the first insertion tongue 742, and the other end of the second insulating portion 75 may be provided with a second slot 751 and a second insertion tongue 752. The second plug tongue 752 can be inserted into the first slot 741 , and the first plug tongue 741 can be inserted into the second slot 752 , so as to realize the other end of the first insulating part 74 and the other end of the second insulating part 75 . One end of the connection, the connection structure is simple and convenient. Of course, the connection structure between 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 FIGS. It is sufficient if the other ends of the two insulating parts 75 are connected.

Optionally, in the present invention, the motor may be an outer rotor motor or a DC brushless motor, etc., which are all within the protection scope of the present invention.

A 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. Since the magnetizing head 100 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, the magnetizing device according to the embodiment of the present invention also has corresponding technical effects. The assembly of the magnetic ring 80 and the winding of the magnetizing head 100 are simpler, the slot filling rate is higher, and the magnetizing effect is better.

The assembling process of the magnetic charging head 100 according to a specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the following description is only an exemplary illustration and should not be construed as a limitation on the invention.

As shown in FIG. 5 , the other end of the first insulating part 74 is preferably separated from the other end of the second insulating part 75 , the installation opening 76 is opened, and the iron core connecting part 115 of the iron core tooth 11 is put into the installation opening 76 , The other end of the first insulating part 74 and the other end of the second insulating part 75 are automatically closed to restore the original state, and the insulating frame 70 wraps the iron core connecting part 115 of the iron core tooth 11; Wind the pole winding 301; after the winding is completed, continue to repeat the above steps until the winding of each limit group 301 is completed; then the wound pole winding 301 is not completely spliced, and the heat sink 50 is reserved for placement; The part 50 is put into the through hole in the middle of the iron core 10 after the incomplete splicing; after the cooling part 50 is put in, the remaining wound pole windings 301 are spliced to form a full circle; The outer surfaces are adhered to the magnetic conductive sheets 20 in one-to-one correspondence; after the magnetic conductive sheets 20 are cured, the base 60 is installed; finally, the exposed parts are encapsulated and molded with epoxy resin. Thus, the assembly of the magnetic head 100 is completed.

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

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In the description of this specification, description with reference to the terms "embodiment," "specific embodiment," "example," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one aspect of the present invention. in one embodiment or example. In this specification, schematic representations of the above terms 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 without interfering or contradicting one another in any one or more embodiments or examples.

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