CN216672705U

CN216672705U - Rotor subassembly, motor and electrical equipment

Info

Publication number: CN216672705U
Application number: CN202123422109.9U
Authority: CN
Inventors: 武谷雨; 秦向南
Original assignee: Guangdong Welling Motor Manufacturing Co Ltd; Midea Welling Motor Technology Shanghai Co Ltd
Current assignee: Guangdong Welling Motor Manufacturing Co Ltd; Midea Welling Motor Technology Shanghai Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-03
Anticipated expiration: 2031-12-31

Abstract

The utility model provides a rotor assembly, a motor and electrical equipment. Wherein, rotor subassembly includes: the rotor core comprises a core body and a plurality of convex parts, the convex parts are positioned on the same side of the core body, the convex parts are arranged at intervals around the axis of the core body, and a mounting groove is surrounded between every two adjacent convex parts and the core body; and a magnetic steel is arranged in each mounting groove. According to the utility model, the matching structure of the plurality of convex parts and the plurality of magnetic steels is reasonably arranged, so that the convex parts have the function of replacing half of the amount of the magnetic steels of the motor in the related technology, thereby reducing the amount of the magnetic steels and being beneficial to reducing the production cost of the rotor assembly. And the integral magnetizing mode of the rotor assembly is simplified, so that the assembly process of the rotor assembly is simplified, and the preparation efficiency of the product is improved.

Description

Rotor subassembly, motor and electrical equipment

Technical Field

The utility model relates to the technical field of motors, in particular to a rotor assembly, a motor and electrical equipment.

Background

The axial flux permanent magnet motor is widely applied to the fields of household appliances, vehicles, industry and the like, and serves as a power source, the permanent magnet motor in the related technology is unreasonable in arrangement, so that magnetic steel is difficult to mount and position, and the motor preparation efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, a first aspect of the utility model proposes a rotor assembly.

A second aspect of the utility model proposes an electric machine.

A third aspect of the utility model proposes an electrical appliance

In view of this, a first aspect of the present invention provides a rotor assembly, including: the rotor core comprises a core body and a plurality of convex parts, the convex parts are positioned on the same side of the core body, the convex parts are arranged at intervals around the axis of the core body, and an installation groove is defined between each two adjacent convex parts and the core body; and a magnetic steel is arranged in each mounting groove.

The utility model provides a rotor assembly which comprises a rotor core and a plurality of magnetic steels, wherein the rotor core comprises a core body and a plurality of convex parts.

Wherein, through the cooperation structure of rationally setting up iron core body, a plurality of convex parts and a plurality of magnet steel for surround out the mounting groove between two adjacent convex parts and the iron core body, the mounting groove has the effect of installation fixed magnet steel, and every magnet steel is connected with a mounting groove cooperation. Specifically, at least a part of the magnetic steel is positioned in the mounting groove.

It can be understood that one of the adjacent two protrusions forms one side wall of the mounting groove, the other of the adjacent two protrusions forms the other side wall of the mounting groove, and the core body forms the bottom of the mounting groove. The mounting groove can limit the displacement of the magnetic steel, namely, the mounting position of the magnetic steel is limited, and therefore the mounting and the positioning of the magnetic steel are simplified. Because the cooperation position of a plurality of convex parts is fixed, also, has injectd the cooperation position of a plurality of mounting grooves, and then has injectd the cooperation position of a plurality of magnet steels, can guarantee rotor core and a plurality of magnet steels's cooperation size.

In addition, through the reasonable cooperation structure that sets up a plurality of convex parts and a plurality of magnet steel for the convex part has the effect of replacing half the magnet steel quantity of the motor among the correlation technique, thereby has reduced the quantity of magnet steel, is favorable to reducing the manufacturing cost of rotor subassembly.

Furthermore, because a plurality of convex parts are positioned on the same side of the iron core body, the overall magnetizing mode of the rotor assembly is simplified, so that the assembling process of the rotor assembly is simplified, and the preparation efficiency of products is improved.

Specifically, the electric machine includes an axial flux permanent magnet machine (or a so-called disc machine).

It can be understood that the number of the magnetic steel is the same as the number of the convex parts, for example, the data of the magnetic steel and the convex parts are both N.

The rotor assembly according to the present invention may further have the following additional technical features:

in above-mentioned technical scheme, furtherly, the convex part deviates from the one end of iron core body, and the one end that deviates from the iron core body with the magnet steel is located the coplanar.

In this technical scheme, through the cooperation structure of reasonable convex part and magnet steel that sets up for the convex part deviates from the one end of iron core body, and the one end that deviates from the iron core body with the magnet steel is located the coplanar. Like this, can guarantee the uniformity of the air gap between rotor subassembly and the stator module, can guarantee the performance of motor, and can guarantee the work efficiency of motor.

In any of the above technical solutions, further, the magnetic pole directions of any two magnetic steels are the same.

In this technical scheme, the cooperation structure of a plurality of magnet steels has been injectd, specifically, the magnetic pole direction of two arbitrary magnet steels is the same. That is, the magnetization setting of any two magnet steels among a plurality of magnet steels is the same, and this setting provides reliable and stable structural support for the motor efficient operation including the rotor assembly. And the arrangement can simplify the difficulty of the magnetizing process.

In any of the above technical solutions, further, the rotor assembly further includes: and the magnetic steel and the rotor core are connected through the first connecting structure.

In this technical scheme, the rotor subassembly still includes a connection structure, through the cooperation structure of reasonable setting rotor subassembly for magnet steel and rotor core are connected through a connection structure, also promptly, and magnet steel and rotor core assemble as a whole through a connection structure. This setting makes the magnet steel can not shift for rotor core, can guarantee rotor core and magnet steel's cooperation size. The device has the advantages of convenient operation, simple processing technology and low production cost.

In any of the above technical solutions, further, the first connecting structure includes an adhesion portion and an adhesion fitting portion, one of the adhesion portion and the adhesion fitting portion is disposed on the magnetic steel, the other is disposed on the rotor core, and the adhesion portion and the adhesion fitting portion are adhered to each other; and/or the first connecting structure comprises a clamping part and a clamping matching part, one of the clamping part and the clamping matching part is arranged on the magnetic steel, the other one of the clamping part and the clamping matching part is arranged on the rotor iron core, and the clamping part and the clamping matching part are clamped; and/or the first connecting structure comprises a locking part which penetrates through one of the magnetic steel and the rotor iron core and is locked into the other one of the magnetic steel and the rotor iron core.

In this technical scheme, first connection structure includes bonding portion and bonding cooperation portion, or first connection structure includes joint portion and joint cooperation portion, or first connection structure includes the sticking department.

Specifically, one of the bonding portion and the bonding fitting portion is provided in the magnetic steel, and the other of the bonding portion and the bonding fitting portion is provided in the rotor core. Because the bonding part is bonded with the bonding matching part, the magnetic steel and the rotor core are bonded together through the bonding part and the bonding matching part.

Specifically, magnet steel is located to one in joint portion and the joint cooperation portion, and rotor core is located to another in joint portion and the joint cooperation portion. Because joint portion and joint cooperation portion joint, so, magnet steel and rotor core pass through joint portion and joint cooperation portion joint together.

Specifically, the locking portion passes through one of the magnetic steel and the rotor core and is locked into the other of the magnetic steel and the rotor core. That is, the magnetic steel and the rotor core are locked together by the locking portion.

This arrangement can limit the amount of movement of the magnetic steel relative to the rotor core. When the magnetic steel needs to be detached, external force can be applied to the magnetic steel to overcome the bonding force or clamping force between the magnetic steel and the rotor core, or the locking part is unlocked, so that the purpose of separating the magnetic steel from the rotor core is achieved. The structure has the advantages of reliable assembly, convenient installation and subsequent disassembly and maintenance, and convenient debugging and calibration of the magnetic steel relative to the rotor core in the assembling process.

Furthermore, the magnetic steel and the rotor core are matched and limited in a bonding mode through the bonding part and the bonding matching part and are locked through the locking part; or the magnetic steel and the rotor core are matched and limited in a bonding mode through the bonding part and the bonding matching part and are clamped through the clamping part and the clamping matching part; or the magnetic steel and the rotor iron core are locked by the locking part and are clamped by the clamping part and the clamping matching part; or the magnetic steel and the rotor iron core are locked by the locking part and are bonded by the bonding part and the bonding matching part; or the magnetic steel and the rotor iron core are matched and limited in a clamping manner through the clamping part and the clamping matching part and are bonded through the bonding part and the bonding matching part; or the magnetic steel and the rotor core are matched and limited in a clamping mode through the clamping part and the clamping matching part and are locked through the locking part. At least one of the bonding, clamping and locking has a pre-fixing effect, and other structures in the bonding, clamping and locking have further fixing effects, so that the magnetic steel assembly reliability can be enhanced, the assembly tightness and precision of the magnetic steel can be further calibrated, and the product assembly is more convenient.

Specifically, at least one of the bonding portion and the bonding fitting portion is glue.

Specifically, one of the clamping portion and the clamping matching portion is a buckle, and the other is a clamping groove. Or one of the clamping part and the clamping matching part is a clamping groove, and a part of the other clamping part is embedded into the clamping groove.

Specifically, the locking portion includes any one of: bolts, screws and rivets.

In any one of the above technical solutions, further, the first connecting structure includes a plastic-coated portion, a first portion of the plastic-coated portion covers at least a portion of the magnetic steel, and a second portion of the plastic-coated portion covers at least a portion of the rotor core.

In this technical scheme, first connection structure moulds the portion including the package, promptly, magnet steel and rotor core mould the portion assembly as a whole through the package. Specifically, the plastic-coated part is formed in an injection molding mode, namely, the magnetic steel and the rotor core are assembled together in an injection molding mode.

The first part of the plastic-coated part coats at least one part of the magnetic steel, and the second part of the plastic-coated part coats at least one part of the rotor core, so that the magnetic steel and the rotor core form an integrated structure. The structure is arranged, and the assembling process of the magnetic steel and the rotor core is omitted, so that the forming process of the magnetic steel and the rotor core is simplified, and the processing efficiency of products is favorably improved. In addition, the magnetic steel and the rotor core are integrally formed, so that the dimensional accuracy of the product can be guaranteed.

And this setting can strengthen the joint strength of rotor core and magnet steel, and the portion of moulding of package has also played fixed action and limiting displacement to the magnet steel to increased the connection area of magnet steel and other structures, can effectively avoid the risk that the magnet steel drops, effectively prevent that the magnet steel from dropping, improved the reliability of motor operation.

In any of the above aspects, the core body is further integrally formed with the projection.

In this technical scheme, iron core body and convex part an organic whole are formed, and this structure setting is owing to saved the assembly process of iron core body with the convex part, so simplified the shaping process of iron core body with the convex part, is favorable to promoting the machining efficiency of product. In addition, the iron core body and the convex part are integrally formed, so that the dimensional accuracy of the product can be guaranteed.

In any of the above technical solutions, further, the iron core body and the convex part are bonded; and/or the iron core body is connected with the convex part in a clamping way; and/or the core body and the convex part are tightly connected through a fastener.

In the technical scheme, the iron core body and the convex part are connected in a bonding manner by reasonably arranging the matching structure of the iron core body and the convex part; and/or the iron core body is connected with the convex part in a clamping way; and/or the core body and the convex part are tightly connected through a fastener.

This arrangement can limit the amount of movement of the projection relative to the core body. When the convex part is required to be disassembled, external force can be applied to the convex part to overcome the bonding force or clamping force between the convex part and the iron core body or unlock the fastener, and then the purpose of separating the convex part from the iron core body is achieved. The structure has the advantages of being reliable in assembly, convenient to install, disassemble and maintain subsequently, and convenient for debugging and calibrating the convex part relative to the iron core body in the assembling process.

Furthermore, the convex part and the iron core body are matched and limited in a bonding mode and are locked through a fastener; or the convex part and the iron core body are matched and limited in a bonding mode and are in clamping fit; or the convex part and the iron core body are locked by a fastener and are in clamping fit; or the convex part and the iron core body are locked by a fastener and are in bonding fit; or the convex part and the iron core body are matched and limited in a clamping manner and are matched in a bonding manner; or the convex part and the iron core body are matched and limited in a clamping manner and are locked through the fastener. At least one of bonding, joint and fastening has the effect of preliminary fixing, and the other structures in bonding, joint and the fastening have the effect of further fixing, can strengthen convex part assembly reliability to the assembly compactness and the precision of further calibration convex part make the product equipment more convenient.

Specifically, at least one of the core body and the convex portion includes glue.

Specifically, one of the iron core body and the convex part is provided with a buckle, and the other is provided with a clamping groove. Or one of the iron core body and the convex part is provided with a clamping groove, and a part of the other one is embedded into the clamping groove.

Specifically, the fastener includes any one of: bolts, screws and rivets.

In any one of the above technical solutions, further, the iron core body includes a plurality of first punching sheets, and the plurality of first punching sheets are stacked along the axial direction of the rotor iron core.

In this technical scheme, iron core body includes a plurality of first towards the piece, piles up the setting through the axial with a plurality of first towards the piece along rotor core in order to form iron core body to iron core body's magnetic conduction ability has been improved.

In any one of the above technical solutions, further, the iron core body includes a second stamped steel, and the second stamped steel is wound and arranged along the radial direction of the rotor iron core.

In the technical scheme, the iron core body comprises the second stamped steel, and the second stamped steel is arranged along the radial winding of the rotor iron core to form the iron core body through the structure of the second stamped steel which is reasonably arranged, so that the magnetic conductivity of the iron core body is improved.

In any of the above technical solutions, further, the convex portion includes a plurality of third stamped sheets, and the plurality of third stamped sheets are stacked along the axial direction of the rotor core, or the plurality of third stamped sheets are stacked along the radial direction of the rotor core.

In this technical scheme, the convex part includes a plurality of third punching sheets, and the setting is stacked in order to form the convex part through the axial along rotor core or along rotor core's radial with a plurality of third punching sheets to the magnetic conductivity of convex part has been improved. Specifically, the stacking direction of the third punching sheet can be in the radial direction of the rotor core, and can also be in the axial direction of the rotor core, and the third punching sheet can be flexibly adjusted according to specific use scenes and processing requirements.

In any of the above solutions, further, the material of the convex portion includes at least one of a soft magnetic material and solid steel.

In the technical scheme, the material of the convex part comprises one or more of a powder material and solid steel, and more specifically, the convex part can be made of a punching sheet made of the solid steel or powder made of a soft magnetic material.

In any of the above technical solutions, further, the shape of the convex portion is the same as that of the magnetic steel.

In this technical scheme, through the cooperation structure of reasonable convex part and magnet steel that sets up for the shape of convex part is the same with the shape of magnet steel, has avoided because of convex part and magnet steel shape nonconformity, and the increase of the harmonic component that arouses, thereby brings the deterioration of performance or vibration noise, can guarantee the performance of motor.

In any one of the above technical solutions, further, one of the two adjacent convex portions forms a first side wall of the mounting groove, the other convex portion forms a second side wall of the mounting groove, a first gap is formed between the first side wall and the magnetic steel, a second gap is formed between the second side wall and the magnetic steel, and the shape of the first gap is the same as that of the second gap.

In this technical scheme, through the cooperation structure of reasonable setting mounting groove and magnet steel for first clearance has between first lateral wall and the magnet steel, has the second clearance between second lateral wall and the magnet steel, and the shape in first clearance is the same with the shape in second clearance.

It will be appreciated that one of two adjacent projections forms a first side wall of the mounting slot and the other of two adjacent projections forms a second side wall of the mounting slot. For example, two adjacent convex portions are respectively referred to as a first convex portion and a second convex portion, a first gap is formed between the first convex portion and the magnetic steel, a second gap is formed between the second convex portion and the magnetic steel along the circumferential direction of the rotor core, and the shape of the first gap is the same as that of the second gap.

Because the gaps are formed between the two adjacent convex parts and the magnetic steel, the magnetic leakage between the convex parts and the magnetic steel is reduced, and the using amount of the magnetic steel is reduced. Further, the shape of the first gap is the same as the shape of the second gap, and thus it is possible to avoid an increase in harmonic components due to a difference in the shape of the gap, which leads to deterioration in performance and vibration noise.

In any one of the above technical solutions, further, any one of the two adjacent convex portions is attached to the magnetic steel.

In this technical scheme, through the cooperation structure of reasonable two convex parts that set up and magnet steel for arbitrary convex part and the magnet steel laminating in two adjacent convex parts. This setting can simplify the assembly process of rotor core and a plurality of magnet steel, has removed the arrangement of location magnet steel from, is favorable to promoting the assembly efficiency of product, and then is favorable to reducing the manufacturing cost of product.

Specifically, two adjacent convex portions are respectively denoted as a first convex portion and a second convex portion, and the first convex portion is attached to the first wall surface of the magnetic steel and the second convex portion is attached to the second wall surface of the magnetic steel along the circumferential direction of the rotor core. The first wall surface and the second wall surface of the magnetic steel are correspondingly arranged.

A second aspect of the present invention provides an electric machine comprising: a stator assembly; and a rotor assembly as in any one of the aspects of the first aspect, the rotor assembly being rotatable relative to the stator assembly.

The motor provided by the utility model comprises the rotor assembly according to any one of the technical solutions in the first aspect, so that all the advantages of the rotor assembly are achieved, which is not stated herein.

In the above technical solution, further, the number of the stator assemblies is one, the number of the rotor assemblies is two, the stator assemblies are located between the two rotor assemblies, and the magnetic steels of the two rotor assemblies are arranged oppositely; along the axial direction of the motor, an air gap is formed between the magnetic steel of each rotor assembly and the stator teeth of the stator assembly; or the number of the stator component and the rotor component is one, and an air gap is formed between the magnetic steel of the rotor component and the stator teeth of the stator component along the axial direction of the motor.

In the technical scheme, the number of the stator assemblies is one, and the number of the rotor assemblies is two. The matching structure of one stator assembly and two rotor assemblies is reasonably arranged, so that the stator assembly is positioned between the two rotor assemblies in the axial direction of the motor. That is, one stator assembly is utilized to drive the two rotor assemblies to rotate, the arrangement is favorable for increasing the power density of the motor, and the problem of large axial force of the single rotor assembly can be solved.

Of course, the electric machine may also include a rotor assembly and a stator assembly.

In any of the above technical solutions, further, the stator assembly includes: a stator core, the stator core comprising: a stator yoke; the stator comprises a stator core, a plurality of stator teeth, a plurality of stator yoke parts and a plurality of stator teeth, wherein the stator teeth are arranged around the axis of the stator core at intervals, the stator teeth are arranged along the axial direction of the stator core, and the stator teeth are detachably connected with the stator yoke parts; and each stator tooth is wound with at least one winding.

In this technical scheme, stator module includes stator core and a plurality of winding, and stator core includes stator yoke portion, a plurality of stator tooth.

Through the cooperation structure of reasonable stator tooth and stator yoke portion that sets up, make the stator tooth set up along stator core's axial, and stator tooth and stator yoke portion detachable connections, thus, make when establishing the winding not receive the restriction of stator core shape, every stator tooth can be connected with stator yoke portion after the winding finishes around establishing, the wire winding mode is nimble, the efficiency is established around having improved the winding, furthermore, the size of size or the interval between the stator tooth through rational arrangement stator tooth is with the size of adjustment wire winding groove, the quantity of winding can set up in a flexible way, make stator core's power level can reasonable adjustment, the problem that the single power level that makes stator core of wire winding groove size is limited among the correlation technique has been solved.

The material of the stator teeth and the stator yoke is preferably a silicon steel sheet, a soft magnetic material or a magnetic conductive material such as solid steel, and all the materials can achieve the purpose of the present invention, and therefore, all the materials are within the protection scope of the present invention.

Note that the coil shapes of the plurality of windings may be the same or different.

In any of the above technical solutions, further, the stator yoke is provided with a second connecting structure, and the second connecting structure is detachably connected to the stator teeth.

In this technical scheme, stator yoke portion is equipped with second connection structure, through the cooperation structure of reasonable stator yoke portion and stator tooth that sets up for the second connection structure who locates stator yoke portion can with stator tooth detachable connections. That is, the stator yoke and the stator teeth are assembled as one body by the second coupling structure. This arrangement makes the stator teeth unable to shift relative to the stator yoke, can guarantee the fit size of stator yoke and stator teeth. The device has the advantages of convenient operation, simple processing technology and low production cost.

In any of the above technical solutions, further, the second connection structure includes: a stator yoke slot in which the stator tooth is inserted, a portion of an outer circumferential wall of the stator yoke being recessed to form the stator yoke slot, or a portion of an inner circumferential wall of the stator yoke being recessed to form the stator yoke slot; or the stator yoke hole, the stator tooth is through-connected to the stator yoke hole, the stator yoke hole is through the stator yoke part along the axial of the stator core; or the stator boss, stator tooth and stator boss joint, and a part of the periphery wall of stator yoke portion is protruding in order to form the stator boss towards the axis that deviates from stator core, or a part of the internal perisporium wall of stator yoke portion is protruding in order to form the stator boss towards the axis of stator core.

In this aspect, the second connection structure includes one of a stator yoke slot, a stator yoke bore, and a stator boss.

When the stator tooth is assembled with the stator yoke, each stator tooth is directly penetrated through the stator yoke slot matched with the shape of the stator tooth or the stator tooth and the stator boss are clamped, even one part of the plurality of stator teeth can be penetrated through the stator yoke slot, and the rest of the stator teeth are clamped with the stator boss.

Specifically, a part of the outer peripheral wall of the stator yoke is recessed to form a stator yoke slot, that is, the stator yoke slot penetrates through the stator yoke and is not communicated with the inner peripheral wall of the stator yoke, then the stator teeth are inserted into the stator yoke slot along the axial direction of the stator yoke to be connected with the stator yoke, the situation that the stator teeth are separated from the stator yoke slot is avoided, and the connection reliability of the stator teeth and the stator yoke is improved.

Specifically, a part of the inner circumferential wall of the stator yoke is recessed to form a stator yoke slot, that is, the stator yoke slot penetrates through the stator yoke and is not communicated with the outer circumferential wall of the stator yoke, and then the stator teeth are inserted into the stator yoke slot along the axial direction of the stator yoke to be connected with the stator yoke, thereby avoiding the occurrence of the situation that the stator teeth are separated from the stator yoke slot and improving the connection reliability of the stator teeth and the stator yoke.

When a part of the outer peripheral wall of the stator yoke is sunken to form the stator yoke slot, the stator teeth can be inserted into the stator yoke slot from the outer peripheral wall of the stator yoke, the connection mode is flexible, and the assembly between the stator teeth and the stator yoke is convenient.

When one part of the inner peripheral wall of the stator yoke part is sunken to form the stator yoke slot, the stator teeth can be inserted into the stator yoke slot from the inner peripheral wall of the stator yoke part, the connection mode is flexible, and the assembly between the stator teeth and the stator yoke part is facilitated.

Specifically, the stator yoke holes penetrate through the stator yoke, and the stator teeth are inserted into the stator yoke holes along the axial direction of the stator yoke to be connected with the stator yoke, so that the situation that the stator teeth are separated from the stator yoke holes is avoided, and the connection reliability of the stator teeth and the stator yoke is improved.

When the stator yoke hole penetrates through the stator yoke portion, the stator teeth can be inserted into the stator yoke hole from the axial direction of the stator yoke portion, the connection mode is flexible, and the stator can be assembled between the teeth and the stator yoke portion conveniently.

Specifically, the stator teeth are connected to the stator boss.

Specifically, the stator tooth is equipped with the stator recess, sets up the protruding muscle in location on the stator boss, perhaps all sets up the protruding muscle in location on stator yoke groove and stator boss, and when the stator tooth assembled with stator yoke portion, the protruding muscle in will fixing a position inserted the positioning recess, played limiting displacement to prevent that stator tooth and stator yoke portion from taking place relative motion, and then improved the stability that stator tooth and location yoke portion are connected.

Specifically, the positioning structure comprises positioning grooves and positioning ribs, wherein the positioning grooves and the positioning ribs are matched in shape, one of the positioning grooves and the positioning ribs is arranged on the stator teeth, and the other one of the positioning grooves and the positioning ribs is arranged on the stator yoke slots and/or the stator bosses so as to limit the positions of the stator teeth on the stator yoke.

Through set up the protruding muscle of location on stator tooth, set up positioning groove on stator yoke groove or stator boss, perhaps all set up positioning groove on stator yoke groove and stator boss, when then stator tooth and stator yoke portion assemble, will fix a position the protruding muscle and insert positioning groove in, play limiting displacement to prevent that stator tooth and stator yoke groove from taking place relative motion, and then improved the stability that stator tooth and positioning yoke groove are connected.

In a similar way, also can set up positioning groove on the stator tooth, set up the protruding muscle in location on stator yoke groove or stator boss, perhaps all set up the protruding muscle in location on stator yoke groove and stator boss, when the stator tooth assembles with stator yoke portion, will fix a position the protruding muscle and insert positioning groove in, play limiting displacement to prevent stator tooth and take place relative motion with stator yoke portion, and then improved the stability that stator tooth and positioning yoke portion are connected.

In any of the above technical solutions, further, the stator teeth include: the stator tooth body is arranged along the axial direction of the stator iron core; the stator tooth shoe is detachably connected with the stator tooth body, or the stator tooth body and the stator tooth shoe are integrally formed.

In this technical scheme, the stator tooth includes stator tooth body and stator tooth boots. The stator tooth boots are arranged at the end parts of the stator tooth bodies and are detachably connected with the stator tooth bodies, so that after the winding is wound on the stator tooth bodies, the stator tooth boots are connected with the stator tooth bodies to play a role in fixing the winding, the winding is prevented from being separated from the stator tooth bodies, and the assembly efficiency of the winding and the stator teeth is further improved.

It should be noted that the material of the stator tooth body and the stator tooth shoe may be the same or different.

Or, the stator tooth body and the stator tooth shoe are integrally formed, so that the structure of a product is simplified, the integrity of the product is better, the connecting step of the stator tooth shoe and the stator tooth body is omitted, and the assembly efficiency of the product is further improved.

In any of the above technical solutions, further, when the number of the stator assembly and the rotor assembly is one, the number of the stator tooth shoes is one, and the stator tooth shoes are arranged at one end of the stator tooth body; when the number of the stator assemblies is one, and the number of the rotor assemblies is two, the number of the stator tooth shoes is two, and two ends of the stator tooth body are respectively provided with one stator tooth shoe.

In this technical scheme, stator tooth boots can be according to actual demand, and the quantity of locating on every stator tooth body is adjusted, specifically, can be equipped with a stator tooth boots on one stator tooth body, still can be equipped with two stator tooth boots on one stator tooth body.

It should be noted that the two stator tooth shoes may be respectively disposed on the end surfaces of the stator tooth body.

Specifically, when the number of the stator assemblies and the number of the rotor assemblies are both one, the number of the stator tooth shoes is one, and the stator tooth shoes are arranged at one end of the stator tooth body; when the number of the stator assemblies is one, and the number of the rotor assemblies is two, the number of the stator tooth shoes is two, and two ends of the stator tooth body are respectively provided with one stator tooth shoe.

Specifically, the stator assembly further includes: the stator tooth shoe comprises a matching groove and a matching convex rib, wherein the matching groove and the matching convex rib are matched in shape, one of the matching groove and the matching convex rib is arranged on the stator tooth body, the other one of the matching groove and the matching convex rib is arranged on the stator tooth shoe, and the matching of the matching groove and the matching convex rib is used for realizing the connection of the stator tooth shoe and the stator tooth body.

Through set up the protruding muscle of cooperation on the stator tooth body, set up the cooperation recess on stator tooth boots, then during stator tooth boots and stator tooth body assembly, directly will cooperate protruding muscle to insert the cooperation recess to restriction stator tooth boots and stator tooth body take place relative motion, improved the assembly efficiency of stator tooth boots and stator tooth body, and improved the stability that stator tooth boots and stator tooth body are connected.

Specifically, the cross-sectional area of the stator yoke portion is one of circular, elliptical, and regular polygonal.

In any of the above solutions, further, the stator assembly includes: a stator core, the stator core comprising: a plurality of stator teeth spaced about an axis of the stator core; each stator tooth is wound with at least one winding; the magnetizing directions of the magnetic steels of the two rotor assemblies are arranged oppositely; wherein, there is phase difference angle between two rotor assemblies.

In this technical scheme, stator module includes stator core and a plurality of winding, and stator core includes a plurality of stator teeth.

Through the cooperation structure of two rotor subassemblies of reasonable setting for stator tooth sets up along stator core's axial, makes the winding independently coiling when establishing, does not receive the restriction of the stator yoke portion among the correlation technique, and the wire winding mode is nimble, has improved the winding and has established efficiency.

In addition, the size of the stator teeth or the space between the stator teeth is reasonably arranged to adjust the size of the winding slots, the number of the windings can be flexibly set, so that the power level of the stator core can be reasonably adjusted, and the problem that the power level of the stator core is limited due to the fact that the size of the winding slots is single in the related technology is solved.

In addition, the magnetizing directions of the magnetic steels of the two rotor assemblies are arranged oppositely, and a phase difference angle is formed between the two rotor assemblies. The device can offset certain subharmonics, thereby reducing vibration noise and ensuring the stability and reliability of the motor operation.

In any of the above technical solutions, further, the stator teeth include: the stator tooth body is arranged along the axial direction of the stator iron core; the first stator tooth shoe is connected with the first end of the stator tooth body; the second stator tooth shoe is connected with the second end of the stator tooth body; and along the axial direction of the motor, an air gap is formed between the magnetic steel of one of the two rotor assemblies and the first stator tooth shoe, and an air gap is formed between the magnetic steel of the other rotor assembly and the second stator tooth shoe.

In the technical scheme, the stator teeth comprise stator tooth bodies, first stator tooth shoes and second stator tooth shoes. That is, one stator tooth includes a first stator tooth body and two stator tooth shoes, and the two stator tooth shoes are connected with both ends of the stator tooth body respectively.

In any of the above technical solutions, further, the first stator tooth shoe, the second stator tooth shoe and the stator tooth body are integrally formed.

In this technical scheme, through the cooperation structure of reasonable first stator tooth boots, second stator tooth boots and the stator tooth body that sets up for first stator tooth boots, second stator tooth boots and stator tooth body an organic whole are formed, have simplified the structure of product, make the wholeness of product better, and have saved the connection step of first stator tooth boots, second stator tooth boots and stator tooth body, have further improved the assembly efficiency of product.

In any of the above solutions, further, the material of the stator teeth includes a soft magnetic material.

In any one of the above technical solutions, further, the stator teeth include a plurality of fourth stamped sheets, and the plurality of fourth stamped sheets are stacked along a radial direction or a circumferential direction of the stator core.

In this technical scheme, the stator tooth includes a plurality of fourth punching sheets, and through piling up the setting with a plurality of fourth punching sheets along stator core's radial or circumference in order to form the stator tooth to stator core's magnetic conductivity has been improved.

Specifically, the stacking direction of the fourth punching sheet can be along the radial direction of the stator core, and can also be along the circumferential direction of the stator core, and the stacking direction of the fourth punching sheet can be flexibly adjusted according to specific use scenes and processing requirements.

In any of the above technical solutions, further, any one of the first stator tooth shoe and the second stator tooth shoe is detachably connected to the stator tooth body.

In this technical scheme, through the cooperation structure of reasonable first stator tooth boots, second stator tooth boots and stator tooth body that sets up, make any one in first stator tooth boots and the second stator tooth boots, with stator tooth body detachable connections, then the winding is around establishing the back on the stator tooth body, first stator tooth boots and second stator tooth boots link to each other with the stator tooth body again, play the effect of fixed winding, prevent that winding and stator tooth body from breaking away from mutually, further improved the assembly efficiency of winding and stator tooth.

In any of the above technical solutions, further, the rotation directions of the two rotor assemblies are the same, and the rotation speeds of the two rotor assemblies are equal.

In any of the above technical solutions, further, the number of the convex portions of the two rotor assemblies is p, and the phase difference angles a and p between the two rotor assemblies satisfy: a is less than or equal to pi/p.

In this technical scheme, the quantity of the convex part of two rotor subassemblies is p, through the cooperation structure of rationally setting up two rotor subassemblies for phase difference angle a between two rotor subassemblies satisfies with p: and a is more than or equal to pi/p, and the arrangement can offset certain subharmonics, thereby reducing vibration noise and ensuring the running stability and reliability of the motor.

A third aspect of the present invention provides an electric apparatus including: a rotor assembly according to any one of the aspects of the first aspect; or a motor as in any of the second aspects.

The electrical equipment provided by the utility model comprises the rotor assembly according to any one of the first technical scheme or the motor according to any one of the second technical scheme, so that all the advantages of the rotor assembly or the motor are achieved, and no description is made herein.

Specifically, the electric appliance includes: industrial equipment such as compressors, fans, pumps, refrigerators, air conditioners, vehicles, multi-split air conditioning systems, and the like, are not listed here.

Additional aspects and advantages of the utility model 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 utility model.

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 illustrates a partial structural schematic view from a first perspective of a rotor assembly of one embodiment of the present invention;

FIG. 2 illustrates a partial structural schematic view from a second perspective of a rotor assembly of an embodiment of the present invention;

FIG. 3 illustrates a schematic structural view of a rotor assembly of one embodiment of the present invention;

fig. 4 shows a partial structural schematic view of a motor of a first embodiment of the present invention;

fig. 5 is a schematic structural view of a stator core of the motor shown in fig. 4;

FIG. 6 is an exploded view of a first embodiment of a stator tooth of the electric machine shown in FIG. 4;

FIG. 7 is an exploded view of a second embodiment of a stator tooth of the electric machine shown in FIG. 4;

FIG. 8 is a schematic structural view of a first embodiment of a stator yoke of the electric machine shown in FIG. 4;

fig. 9 is a schematic structural view of a second embodiment of a stator yoke of the electric machine shown in fig. 4;

fig. 10 is a partial structural view showing a motor according to a second embodiment of the present invention;

fig. 11 is a schematic structural view of a stator core of the motor shown in fig. 10;

wherein, the correspondence between the reference numbers and the part names in fig. 1 to 11 is:

100 rotor assembly, 110 rotor core, 112 core body, 114 convex part, 116 mounting groove, 120 magnetic steel, 130 plastic-covered part, 140 first gap, 150 second gap, 200 motor, 310 stator core, 312 stator yoke part, 314 stator tooth, 316 winding, 318 stator yoke groove, 320 stator yoke hole, 322 stator tooth body, 324 stator tooth shoe, 324a first stator tooth shoe, 324b second stator tooth shoe, 326 fitting convex rib, 328 positioning convex rib and 330 fitting concave groove.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A rotor assembly 100, a motor 200, and an electric appliance according to some embodiments of the present invention are described below with reference to fig. 1 to 11.

Example 1:

as shown in fig. 1, 2 and 3, an embodiment of the first aspect of the present invention provides a rotor assembly 100, where the rotor assembly 100 includes a rotor core 110 and a plurality of magnetic steels 120.

The rotor core 110 includes a core body 112 and a plurality of projections 114.

The plurality of convex portions 114 are located on the same side of the core body 112, and the plurality of convex portions 114 are arranged around the axis of the core body 112 at intervals, and a mounting groove 116 is surrounded between two adjacent convex portions 114 and the core body 112.

A magnetic steel 120 is provided in each mounting groove 116.

In detail, the rotor assembly 100 includes a rotor core 110 and a plurality of magnetic steels 120, and the rotor core 110 includes a core body 112 and a plurality of protrusions 114.

Wherein, through the cooperation structure of reasonable setting iron core body 112, a plurality of convex parts 114 and a plurality of magnet steel 120 for surround mounting groove 116 between two adjacent convex parts 114 and iron core body 112, mounting groove 116 has the effect of the fixed magnet steel 120 of installation, and every magnet steel 120 is connected with a mounting groove 116 cooperation. Specifically, at least a portion of the magnetic steel 120 is located within the mounting slot 116.

It is understood that one 114 of the adjacent two projections 114 forms one side wall of the mounting groove 116, the other 114 of the adjacent two projections 114 forms the other side wall of the mounting groove 116, and the core body 112 forms the bottom of the mounting groove 116. The mounting groove 116 can limit the displacement of the magnetic steel 120, that is, the mounting position of the magnetic steel 120 is limited, thereby simplifying the mounting and positioning of the magnetic steel 120. Since the fitting positions of the plurality of protrusions 114 are fixed, that is, the fitting positions of the plurality of mounting grooves 116 are defined, and further the fitting positions of the plurality of magnetic steels 120 are defined, the fitting size of the rotor core 110 and the plurality of magnetic steels 120 can be ensured.

In addition, through the reasonable arrangement of the matching structure of the plurality of convex parts 114 and the plurality of magnetic steels 120, the convex parts 114 have the function of replacing half of the amount of the magnetic steels 120 of the motor 200 in the related art, so that the amount of the magnetic steels 120 is reduced, and the production cost of the rotor assembly 100 is favorably reduced.

Further, since the plurality of protrusions 114 are located on the same side of the core body 112, the overall magnetizing manner of the rotor assembly 100 is simplified, thereby simplifying the assembly process of the rotor assembly 100 and improving the manufacturing efficiency of the product.

Specifically, the motor 200 includes an axial flux permanent magnet motor or a so-called disc motor.

Example 2:

as shown in fig. 1, fig. 2 and fig. 3, on the basis of embodiment 1, embodiment 2 provides a rotor assembly 100, where the rotor assembly 100 includes a rotor core 110 and a plurality of magnetic steels 120.

The rotor core 110 includes a core body 112 and a plurality of projections 114.

A magnetic steel 120 is provided in each mounting groove 116.

Further, the number of magnetic steels 120 is the same as the number of projections 114.

In detail, the magnetic steels 120 are equal in number to the protrusions 114, providing a reliable and stable structural support for efficient operation of the motor 200 including the rotor assembly 100.

Specifically, the number of the magnetic steel 120 is the same as the number of the convex portions 114, for example, the data of the magnetic steel 120 and the data of the convex portions 114 are both N.

Example 3:

as shown in fig. 1, fig. 2 and fig. 3, on the basis of embodiment 1 or embodiment 2, embodiment 3 provides a rotor assembly 100, where the rotor assembly 100 includes a rotor core 110 and a plurality of magnetic steels 120.

The rotor core 110 includes a core body 112 and a plurality of projections 114.

A magnetic steel 120 is provided in each mounting groove 116.

Further, an end of the protrusion 114 facing away from the core body 112 and an end of the magnetic steel 120 facing away from the core body 112 are located on the same plane.

In detail, through the reasonable arrangement of the matching structure of the convex portion 114 and the magnetic steel 120, one end of the convex portion 114 departing from the iron core body 112 and one end of the magnetic steel 120 departing from the iron core body 112 are located on the same plane. In this way, the consistency of the air gap between the rotor assembly 100 and the stator assembly can be ensured, the usability of the motor 200 can be ensured, and the working efficiency of the motor 200 can be ensured.

Specifically, an end of the convex portion 114 facing away from the core body 112 includes any one or a combination of the following: plane, curved and folded surfaces.

Specifically, an end of the magnetic steel 120 facing away from the core body 112 includes any one or a combination of the following: plane, curved and folded.

Further, as shown in fig. 1 to 3, the magnetic pole directions of any two magnetic steels 120 are the same.

Wherein the arrows indicate the magnetizing direction. The matching structure of the plurality of magnetic steels 120 is defined, and specifically, the magnetic pole directions of any two magnetic steels 120 are the same. That is, the magnetizing settings of any two of the plurality of magnetic steels 120 are the same, which provides reliable and stable structural support for efficient operation of the electric machine 200 including the rotor assembly 100. And the arrangement can simplify the difficulty of the magnetizing process.

Example 4:

as shown in fig. 1, fig. 2 and fig. 3, on the basis of embodiment 1 or embodiment 2, embodiment 4 provides a rotor assembly 100, where the rotor assembly 100 includes a rotor core 110 and a plurality of magnetic steels 120.

The rotor core 110 includes a core body 112 and a plurality of projections 114.

A magnetic steel 120 is provided in each mounting groove 116.

Further, the rotor assembly 100 further includes: the first connection structure, the magnetic steel 120 and the rotor core 110 are connected by the first connection structure.

In detail, the rotor assembly 100 further includes a first connection structure, and the magnetic steel 120 and the rotor core 110 are connected through the first connection structure by reasonably setting the matching structure of the rotor assembly 100, that is, the magnetic steel 120 and the rotor core 110 are assembled into a whole through the first connection structure. This arrangement makes the magnetic steel 120 unable to shift relative to the rotor core 110, and can ensure the fit size of the rotor core 110 and the magnetic steel 120. The device has the advantages of convenient operation, simple processing technology and low production cost.

Example 5:

as shown in fig. 1, 2 and 3, on the basis of embodiment 4, embodiment 5 provides a rotor assembly 100, where the rotor assembly 100 includes a rotor core 110 and a plurality of magnetic steels 120.

The rotor core 110 includes a core body 112 and a plurality of projections 114.

A magnetic steel 120 is provided in each mounting groove 116.

The rotor assembly 100, further comprising: the first connection structure, the magnetic steel 120 and the rotor core 110 are connected by the first connection structure.

Further, the first connecting structure includes an adhesion portion and an adhesion fitting portion, one of the adhesion portion and the adhesion fitting portion is disposed on the magnetic steel 120, the other is disposed on the rotor core 110, and the adhesion portion and the adhesion fitting portion are adhered; and/or the first connecting structure comprises a clamping part and a clamping matching part, one of the clamping part and the clamping matching part is arranged on the magnetic steel 120, the other one of the clamping part and the clamping matching part is arranged on the rotor core 110, and the clamping part and the clamping matching part are clamped; and/or the first connection structure includes a locking part passing through one of the magnetic steel 120 and the rotor core 110 and locking into the other.

Wherein, first connection structure includes bonding portion and bonding cooperation portion, or first connection structure includes joint portion and joint cooperation portion, or first connection structure includes the sticking department.

Specifically, one of the bonding portion and the bonding fitting portion is provided in the magnetic steel 120, and the other of the bonding portion and the bonding fitting portion is provided in the rotor core 110. Since the bonding portion and the bonding engagement portion are bonded, the magnetic steel 120 and the rotor core 110 are bonded together by the bonding portion and the bonding engagement portion.

Specifically, magnetic steel 120 is located in one of the clamping portion and the clamping fit portion, and rotor core 110 is located in the other of the clamping portion and the clamping fit portion. Since the clamping portion and the clamping matching portion are clamped, the magnetic steel 120 and the rotor core 110 are clamped together by the clamping portion and the clamping matching portion.

Specifically, the locking portion passes through one of the magnetic steel 120 and the rotor core 110, and is locked into the other of the magnetic steel 120 and the rotor core 110. That is, the magnetic steel 120 and the rotor core 110 are locked together by the locking portion.

This arrangement can limit the purpose of the amount of movement of the magnetic steel 120 relative to the rotor core 110. When the magnetic steel 120 needs to be detached, an external force may be applied to the magnetic steel 120 to overcome the adhesive force or the clamping force between the magnetic steel 120 and the rotor core 110, or to unlock the locking portion, thereby achieving the purpose of separating the magnetic steel 120 and the rotor core 110. The structural arrangement has assembly reliability, is convenient for installation and subsequent disassembly and maintenance, and is also convenient for debugging and calibration of the magnetic steel 120 relative to the rotor core 110 in the assembling process.

Further, the magnetic steel 120 and the rotor core 110 are matched and limited in a bonding manner through a bonding part and a bonding matching part, and are locked through a locking part; or the magnetic steel 120 and the rotor core 110 are matched and limited in a bonding manner through the bonding part and the bonding matching part, and are clamped through the clamping part and the clamping matching part; or the magnetic steel 120 and the rotor core 110 are locked by the locking part and clamped by the clamping part and the clamping matching part; or the magnetic steel 120 and the rotor core 110 are locked via the locking portion and bonded via the bonding portion and the bonding fitting portion; or the magnetic steel 120 and the rotor core 110 are matched and limited in a clamping manner through the clamping part and the clamping matching part, and are bonded through the bonding part and the bonding matching part; or the magnetic steel 120 and the rotor core 110 are matched and limited in a clamping manner through the clamping part and the clamping matching part, and are locked through the locking part. At least one of the bonding, clamping and locking has a pre-fixing effect, and other structures in the bonding, clamping and locking have further fixing effects, so that the assembly reliability of the magnetic steel 120 can be enhanced, the assembly tightness and accuracy of the magnetic steel 120 can be further calibrated, and the product assembly is more convenient.

Specifically, the lock portion includes any one of: bolts, screws and rivets.

Example 6:

as shown in fig. 1, 2 and 3, on the basis of embodiment 4, embodiment 6 provides a rotor assembly 100, where the rotor assembly 100 includes a rotor core 110 and a plurality of magnetic steels 120.

The rotor core 110 includes a core body 112 and a plurality of projections 114.

A magnetic steel 120 is provided in each mounting groove 116.

Further, as shown in fig. 3, the first connecting structure includes a plastic-coated portion 130.

The first part of the plastic-coated part 130 covers at least a part of the magnetic steel 120, and the second part of the plastic-coated part 130 covers at least a part of the rotor core 110.

In detail, the first connection structure includes the plastic coated portion 130, that is, the magnetic steel 120 and the rotor core 110 are assembled as one body by the plastic coated portion 130. Specifically, the plastic-covered portion 130 is formed in an injection molding manner, that is, the magnetic steel 120 and the rotor core 110 are assembled together in an injection molding manner.

The first part of the plastic-coated part 130 coats at least a part of the magnetic steel 120, and the second part of the plastic-coated part 130 coats at least a part of the rotor core 110, so that the magnetic steel 120 and the rotor core 110 form an integrated structure. This structure setting is owing to saved magnet steel 120 and rotor core 110's assembly process, so simplified magnet steel 120 and rotor core 110's shaping process, is favorable to promoting the machining efficiency of product. In addition, the magnetic steel 120 and the rotor core 110 are integrally formed to ensure the dimensional accuracy of the product.

And this setting can strengthen rotor core 110 and magnet steel 120's joint strength, and plastic-coated portion 130 has also played fixed action and limiting displacement to magnet steel 120 to increased the area of being connected of magnet steel 120 and other structures, can effectively avoid the risk that magnet steel 120 drops, effectively prevent that magnet steel 120 from droing, improved the reliability of motor 200 operation.

Example 7:

as shown in fig. 1, fig. 2 and fig. 3, on the basis of embodiment 1 or embodiment 2, embodiment 7 provides a rotor assembly 100, where the rotor assembly 100 includes a rotor core 110 and a plurality of magnetic steels 120.

The rotor core 110 includes a core body 112 and a plurality of projections 114.

A magnetic steel 120 is provided in each mounting groove 116.

Further, the core body 112 is integrally formed with the convex portion 114.

In detail, the core body 112 and the protrusion 114 are integrally formed, and this structural arrangement simplifies the molding process of the core body 112 and the protrusion 114 because the assembly process of the core body 112 and the protrusion 114 is omitted, which is beneficial to improving the processing efficiency of the product. In addition, the core body 112 is integrally formed with the convex portion 114 to ensure the dimensional accuracy of the product.

Alternatively, the core body 112 and the convex portion 114 are bonded; and/or the iron core body 112 is connected with the convex part 114 in a clamping way; and/or the core body 112 and the boss 114 are securely connected by a fastener.

The iron core body 112 and the convex part 114 are connected in a bonding manner by reasonably arranging the matching structure of the iron core body 112 and the convex part 114; and/or the iron core body 112 and the convex part 114 are connected in a clamping way; and/or the core body 112 and the boss 114 are securely connected by a fastener.

This arrangement can limit the amount of movement of the convex portion 114 with respect to the core body 112. When the protruding portion 114 needs to be detached, an external force may be applied to the protruding portion 114 to overcome an adhesive force or a clamping force between the protruding portion 114 and the core body 112, or to unlock the fastener, so as to separate the protruding portion 114 from the core body 112. The structural arrangement has assembly reliability, facilitates installation and subsequent disassembly and maintenance, and also facilitates debugging and calibration of the protrusion 114 relative to the core body 112 during assembly.

Further, the convex portion 114 and the core body 112 are matched and limited in a bonding manner, and are locked via a fastener; or the convex part 114 and the iron core body 112 are matched and limited in a bonding mode and are in clamping fit; or the protrusion 114 and the core body 112 are locked via a fastener and snap-fit; or the convex portion 114 and the core body 112 are locked via a fastener and are adhesively fitted; or the convex part 114 and the iron core body 112 are matched and limited in a clamping manner and are in bonding fit; or the convex part 114 and the iron core body 112 are matched and limited in a clamping mode and locked through a fastener. At least one of bonding, joint and fastening has the effect of preliminary fixing, and the other structures in bonding, joint and fastening have the effect of further fixing, can strengthen convex part 114 assembly reliability to the assembly compactness and the precision of further calibration convex part 114 make the product equipment more convenient.

Specifically, at least one of the core body 112 and the convex portion 114 includes glue.

Specifically, one of the core body 112 and the protrusion 114 is provided with a snap, and the other is provided with a slot. Alternatively, one of the core body 112 and the projection 114 is provided with a slot, and a part of the other is inserted into the slot.

Specifically, the fastener includes any one of: bolts, screws and rivets.

Example 8:

as shown in fig. 1, fig. 2 and fig. 3, on the basis of embodiment 1 or embodiment 2, embodiment 8 provides a rotor assembly 100, where the rotor assembly 100 includes a rotor core 110 and a plurality of magnetic steels 120.

The rotor core 110 includes a core body 112 and a plurality of projections 114.

A magnetic steel 120 is provided in each mounting groove 116.

Further, the core body 112 includes a plurality of first stamped pieces, and the plurality of first stamped pieces are stacked along the axial direction of the rotor core 110.

In detail, the core body 112 includes a plurality of first stamped sheets, and the plurality of first stamped sheets are stacked along the axial direction of the rotor core 110 to form the core body 112, so that the magnetic conductivity of the core body 112 is improved.

Alternatively, the core body 112 includes a second punching sheet, and the second punching sheet is wound along the radial direction of the rotor core 110.

The core body 112 includes a second punching sheet, and the second punching sheet is arranged along the radial winding of the rotor core 110 to form the core body 112 by reasonably setting the structure of the second punching sheet, so that the magnetic conductivity of the core body 112 is improved.

Example 9:

as shown in fig. 1, fig. 2 and fig. 3, on the basis of embodiment 1 or embodiment 2, embodiment 9 provides a rotor assembly 100, where the rotor assembly 100 includes a rotor core 110 and a plurality of magnetic steels 120.

The rotor core 110 includes a core body 112 and a plurality of projections 114.

A magnetic steel 120 is provided in each mounting groove 116.

Further, the convex portion 114 includes a plurality of third punching sheets, the plurality of third punching sheets are stacked along the axial direction of the rotor core 110, or the plurality of third punching sheets are stacked along the radial direction of the rotor core 110.

In detail, the convex portion 114 includes a plurality of third punching sheets, and the plurality of third punching sheets are stacked in an axial direction of the rotor core 110 or a radial direction of the rotor core 110 to form the convex portion 114, so that a magnetic permeability of the convex portion 114 is improved. Specifically, the stacking direction of the third punching sheet may be along the radial direction of the rotor core 110, or may be along the axial direction of the rotor core 110, and may be flexibly adjusted according to a specific use scenario and a processing requirement.

Further, the material of the convex portion 114 includes at least one of a soft magnetic material and solid steel.

The material of the convex portion 114 includes one or more of a powder material and solid steel, and more specifically, the convex portion 114 may be made of a punching sheet made of solid steel or a powder formed of a soft magnetic material.

Example 10:

as shown in fig. 1, fig. 2 and fig. 3, on the basis of embodiment 1 or embodiment 2, embodiment 10 provides a rotor assembly 100, where the rotor assembly 100 includes a rotor core 110 and a plurality of magnetic steels 120.

The rotor core 110 includes a core body 112 and a plurality of projections 114.

A magnetic steel 120 is provided in each mounting groove 116.

Further, the shape of the convex portion 114 is the same as that of the magnetic steel 120.

In detail, by reasonably setting the matching structure of the convex part 114 and the magnetic steel 120, the shape of the convex part 114 is the same as that of the magnetic steel 120, so that the increase of harmonic components caused by the inconsistent shapes of the convex part 114 and the magnetic steel 120 is avoided, the deterioration of performance or vibration noise is caused, and the service performance of the motor 200 can be ensured.

Example 11:

as shown in fig. 1, fig. 2 and fig. 3, based on embodiment 1 or embodiment 2, embodiment 11 provides a rotor assembly 100, where the rotor assembly 100 includes a rotor core 110 and a plurality of magnetic steels 120.

The rotor core 110 includes a core body 112 and a plurality of projections 114.

A magnetic steel 120 is provided in each mounting groove 116.

Further, as shown in fig. 1 and 2, one 114 of the adjacent two projections 114 forms a first sidewall of the mounting groove 116, and the other 114 forms a second sidewall of the mounting groove 116.

A first gap 140 is formed between the first sidewall and the magnetic steel 120, a second gap 150 is formed between the second sidewall and the magnetic steel 120, and the shape of the first gap 140 is the same as that of the second gap 150.

In detail, by reasonably setting the matching structure of the mounting groove 116 and the magnetic steel 120, a first gap 140 is formed between the first sidewall and the magnetic steel 120, a second gap 150 is formed between the second sidewall and the magnetic steel 120, and the shape of the first gap 140 is the same as that of the second gap 150.

It will be appreciated that one 114 of two adjacent projections 114 forms a first side wall of the mounting slot 116 and the other 114 of two adjacent projections 114 forms a second side wall of the mounting slot 116. For example, the two adjacent protrusions 114 are respectively referred to as a first protrusion and a second protrusion, a first gap 140 is formed between the first protrusion and the magnetic steel 120, a second gap 150 is formed between the second protrusion and the magnetic steel 120, and the shape of the first gap 140 is the same as the shape of the second gap 150 along the circumferential direction of the rotor core 110.

Because the gaps are formed between the two adjacent convex parts 114 and the magnetic steel 120, the magnetic leakage between the convex parts 114 and the magnetic steel 120 is reduced, and the using amount of the magnetic steel 120 is reduced. In addition, since the shape of the first gap 140 is the same as the shape of the second gap 150, it is possible to prevent the harmonic component from increasing due to the difference in the shape of the gap, thereby deteriorating the performance and the vibration noise.

Alternatively, any one of the two adjacent projections 114 is attached to the magnetic steel 120.

Wherein, through the cooperation structure that rationally sets up two convex parts 114 and magnet steel 120 for arbitrary convex part 114 in two adjacent convex parts 114 and the laminating of magnet steel 120. This setting can simplify the assembly process of rotor core 110 and a plurality of magnet steel 120, has removed the arrangement of location magnet steel 120 from, is favorable to promoting the assembly efficiency of product, and then is favorable to reducing the manufacturing cost of product.

Specifically, the two adjacent protrusions 114 are respectively referred to as a first protrusion and a second protrusion, and the first protrusion is attached to the first wall surface of the magnetic steel 120 and the second protrusion is attached to the second wall surface of the magnetic steel 120 along the circumferential direction of the rotor core 110. The first wall surface and the second wall surface of the magnetic steel 120 are correspondingly arranged.

Example 12:

as shown in fig. 4 and 10, an embodiment of the second aspect of the present invention proposes a motor 200, the motor 200 including: a stator assembly; and a rotor assembly 100 as in any of the embodiments of the first aspect, the rotor assembly 100 being rotatable relative to the stator assembly.

In detail, the motor 200 includes a stator assembly and the rotor assembly 100 according to any one of the embodiments of the first aspect, and therefore, all the advantages of the rotor assembly 100 are provided, which is not described herein.

Example 13:

as shown in fig. 4 and 10, embodiment 13 provides a motor 200 on the basis of embodiment 12, the motor 200 including: a stator assembly; and a rotor assembly 100 as in any one of the embodiments of the first aspect, the rotor assembly 100 being rotatable relative to the stator assembly.

Further, as shown in fig. 4, the number of stator assemblies is one; the number of rotor assemblies 100 is two; the stator assembly is located between the two rotor assemblies 100, and the magnetic steels 120 of the two rotor assemblies 100 are arranged oppositely; along the axial direction of the motor 200, an air gap is formed between the magnetic steel 120 of each rotor assembly 100 and the stator teeth 314 of the stator assembly; or the number of the stator assembly and the rotor assembly 100 is one, and an air gap is formed between the magnetic steel 120 of the rotor assembly 100 and the stator teeth 314 of the stator assembly along the axial direction of the motor.

In detail, the number of stator assemblies is one, and the number of rotor assemblies 100 is two. The matching structure of one stator assembly and two rotor assemblies 100 is properly arranged, so that the stator assembly is located between the two rotor assemblies 100 in the axial direction of the motor 200. That is, the arrangement in which one stator assembly rotates two rotor assemblies 100 is advantageous in increasing the power density of the motor 200, and the problem of a large axial force of a single rotor assembly 100 can be eliminated.

Of course, the motor 200 may also include one rotor assembly 100 and one stator assembly.

Example 14:

as shown in fig. 4 and 5, on the basis of embodiment 12 or embodiment 13, embodiment 14 provides a motor 200, the motor 200 including: a stator assembly; and a rotor assembly 100 as in any of the embodiments of the first aspect, the rotor assembly 100 being rotatable relative to the stator assembly.

Further, as shown in fig. 4 and 5, the stator assembly includes a stator core 310 and a plurality of windings 316, the stator core 310 including a stator yoke portion 312, a plurality of stator teeth 314.

A plurality of stator teeth 314 are arranged at intervals around the axis of the stator core 310, the stator teeth 314 are arranged along the axial direction of the stator core 310, and the stator teeth 314 are detachably connected to the stator yoke 312.

At least one winding 316 is wound around each stator tooth 314.

In detail, the matching structure of the stator teeth 314 and the stator yoke 312 is reasonably arranged, so that the stator teeth 314 are arranged along the axial direction of the stator core 310, and the stator teeth 314 and the stator yoke 312 are detachably connected, in this way, the winding of the winding 316 is not limited by the shape of the stator core 310, each stator tooth 314 can be connected with the stator yoke 312 after the winding 316 is completely wound, the winding mode is flexible, the winding efficiency of the winding 316 is improved, in addition, the size of the stator teeth 314 or the distance between the stator teeth 314 is reasonably arranged to adjust the size of the winding slots, the number of the winding 316 can be flexibly arranged, the power level of the stator core 310 can be reasonably adjusted, and the problem that the power level of the stator core 310 is limited due to the single size of the winding slots in the related technology is solved.

The material of the stator teeth 314 and the stator yoke 312 is preferably a silicon steel sheet, a soft magnetic material, or a magnetic conductive material such as solid steel, which can achieve the purpose of the present invention, and therefore, all of them should be within the protection scope of the present invention.

Note that the coil shapes of the plurality of windings 316 may be the same or different.

Further, the stator yoke 312 is provided with a second coupling structure, which is detachably coupled to the stator teeth 314.

Wherein, stator yoke portion 312 is equipped with the second connection structure, through the cooperation structure of reasonable stator yoke portion 312 and stator tooth 314 that sets up for the second connection structure who sets up stator yoke portion 312 can with stator tooth 314 detachable connections. That is, the stator yoke 312 and the stator teeth 314 are assembled as one body by the second coupling structure. This arrangement prevents the stator teeth 314 from being displaced relative to the stator yoke 312, and ensures the fit dimensions of the stator yoke 312 and the stator teeth 314. The device has the advantages of convenient operation, simple processing technology and low production cost.

Further, as shown in fig. 8 and 9, the second coupling structure includes: a stator yoke slot 318, the stator teeth 314 passing through the stator yoke slot 318, a portion of an outer circumferential wall of the stator yoke 312 being recessed to form the stator yoke slot 318, or a portion of an inner circumferential wall of the stator yoke 312 being recessed to form the stator yoke slot 318; or stator yoke holes 320, the stator teeth 314 are penetrated in the stator yoke holes 320, and the stator yoke holes 320 penetrate the stator yoke 312 along the axial direction of the stator core 310; or a stator boss, with which the stator teeth 314 are snapped, a portion of the outer circumferential wall of the stator yoke 312 protruding towards the axis away from the stator core 310 to form the stator boss, or a portion of the inner circumferential wall of the stator yoke 312 protruding towards the axis of the stator core 310 to form the stator boss.

Wherein the second connection structure includes one of a stator yoke slot 318, a stator yoke hole 320, and a stator boss.

When the stator teeth 314 and the stator yoke 312 are assembled, each stator tooth 314 directly penetrates through the stator yoke slot 318 matched with the shape of the stator tooth 314 or the stator teeth 314 and the stator bosses are clamped, even a part of the plurality of stator teeth 314 penetrates through the stator yoke slot 318, and the rest of the stator teeth 314 and the rest of the stator bosses are clamped.

The material of the stator teeth 314 and the stator yoke 312 is preferably a silicon steel sheet, a soft magnetic material, or a solid steel, which can achieve the purpose of the present invention, and therefore, both should be within the protection scope of the present invention.

Specifically, as shown in fig. 8, a part of the outer circumferential wall of the stator yoke 312 is recessed to form the stator yoke slot 318, that is, the stator yoke slot 318 penetrates the stator yoke 312 and does not communicate with the inner circumferential wall of the stator yoke 312, and the stator teeth 314 are inserted into the stator yoke slot 318 in the axial direction of the stator yoke 312 to be coupled to the stator yoke 312, so that the stator teeth 314 are prevented from being disengaged from the stator yoke slot 318, and the coupling reliability of the stator teeth 314 and the stator yoke 312 is improved.

Specifically, as shown in fig. 8, a portion of the inner circumferential wall of the stator yoke 312 is recessed to form a stator yoke slot 318, that is, the stator yoke slot 318 penetrates the stator yoke 312 and does not communicate with the outer circumferential wall of the stator yoke 312, and the stator teeth 314 are inserted into the stator yoke slot 318 in the axial direction of the stator yoke 312 to be connected with the stator yoke 312, so that the stator teeth 314 are prevented from being disengaged from the stator yoke slot 318, and the connection reliability of the stator teeth 314 and the stator yoke 312 is improved.

Wherein, when a part of the outer circumferential wall of the stator yoke 312 is recessed to form the stator yoke slot 318, the stator teeth 314 can be inserted into the stator yoke slot 318 from the outer circumferential wall of the stator yoke 312, and the connection manner is flexible, which facilitates the assembly between the stator teeth 314 and the stator yoke 312.

When a portion of the inner circumferential wall of the stator yoke 312 is recessed to form the stator yoke slot 318, the stator teeth 314 can be inserted into the stator yoke slot 318 from the inner circumferential wall of the stator yoke 312, and the connection manner is flexible, thereby facilitating the assembly between the stator teeth 314 and the stator yoke 312.

Specifically, as shown in fig. 9, the stator yoke holes 320 penetrate the stator yoke 312, and the stator teeth 314 are inserted into the stator yoke holes 320 in the axial direction of the stator yoke 312 to be connected to the stator yoke 312, so that the stator teeth 314 are prevented from being disengaged from the stator yoke holes 320, and the connection reliability of the stator teeth 314 and the stator yoke 312 is improved.

When the stator yoke hole 320 penetrates through the stator yoke 312, the stator teeth 314 can be inserted into the stator yoke hole 320 from the axial direction of the stator yoke 312, the connection mode is flexible, and the stator can be assembled between the teeth and the stator yoke 312 conveniently.

Specifically, the stator teeth 314 are coupled to the stator boss.

Specifically, stator tooth 314 is equipped with the stator recess, sets up location protruding muscle 328 on the stator boss, perhaps all sets up location protruding muscle 328 on stator yoke slot 318 and stator boss, and when stator tooth 314 and stator yoke 312 assembled, will fix a position protruding muscle 328 and insert in the positioning recess, play limiting displacement to prevent that stator tooth 314 and stator yoke 312 from taking place relative motion, and then improved the stability that stator tooth 314 and location yoke are connected.

Specifically, the positioning grooves and the positioning ribs 328 are shaped to match, wherein one of the positioning grooves and the positioning ribs 328 is disposed on the stator teeth 314, and the other is disposed on the stator yoke slot 318 and/or the stator boss, so as to limit the position of the stator teeth 314 on the stator yoke 312.

Through set up location protruding muscle 328 on stator tooth 314, set up positioning groove on stator yoke slot 318 or stator boss, perhaps all set up positioning groove on stator yoke slot 318 and stator boss, when then stator tooth 314 assembles with stator yoke 312, will fix a position protruding muscle 328 and insert positioning groove in, play limiting displacement to prevent that stator tooth 314 and stator yoke slot 318 from taking place relative motion, and then improved the stability that stator tooth 314 and positioning yoke slot are connected.

In the same way, also can set up positioning groove on stator tooth 314, set up location protruding muscle 328 on stator yoke groove 318 or stator boss, perhaps all set up location protruding muscle 328 on stator yoke groove 318 and stator boss, when stator tooth 314 and stator yoke 312 assemble, will fix a position protruding muscle 328 and insert positioning groove in, play limiting displacement, thereby prevent stator tooth 314 and with stator yoke 312 emergence relative motion, and then improved the stability that stator tooth 314 and location yoke are connected.

Example 15:

as shown in fig. 4 and 5, on the basis of embodiment 14, embodiment 15 provides a motor 200, and the motor 200 includes: a stator assembly; and a rotor assembly 100 as in any of the embodiments of the first aspect, the rotor assembly 100 being rotatable relative to the stator assembly.

The stator assembly includes a stator core 310 and a plurality of windings 316, the stator core 310 including a stator yoke 312, a plurality of stator teeth 314.

At least one winding 316 is wound around each stator tooth 314.

Further, as shown in fig. 5, 6 and 7, the stator teeth 314 include a stator tooth body 322 and a stator tooth shoe 324.

The stator tooth body 322 is disposed along the axial direction of the stator core 310.

Stator tooth shoes 324 are detachably connected to stator tooth body 322, or stator tooth body 322 is integrally formed with stator tooth shoes 324.

In detail, stator teeth 314 include a stator tooth body 322 and a stator tooth shoe 324. The stator tooth shoes 324 are arranged at the end parts of the stator tooth bodies 322 and are detachably connected with the stator tooth bodies 322, so that after the winding 316 is wound on the stator tooth bodies 322, the stator tooth shoes 324 are connected with the stator tooth bodies 322 to play a role of fixing the winding 316, the winding 316 is prevented from being separated from the stator tooth bodies 322, and the assembly efficiency of the winding 316 and the stator teeth 314 is further improved.

It should be noted that the stator tooth body 322 and the stator tooth shoes 324 may be made of the same material or different materials.

Or, the stator tooth body 322 and the stator tooth shoes 324 are integrally formed, so that the structure of the product is simplified, the integrity of the product is better, the connecting step of the stator tooth shoes 324 and the stator tooth body 322 is omitted, and the assembly efficiency of the product is further improved.

Further, as shown in fig. 7, when the number of the stator assembly and the rotor assembly 100 is one, the number of the stator tooth shoes 324 is one, and the stator tooth shoes 324 are provided at one end of the stator tooth body 322.

As shown in fig. 6, when the number of the stator assemblies is one and the number of the rotor assemblies 100 is two, the number of the stator tooth shoes 324 is two, and one stator tooth shoe 324 is provided at each end of the stator tooth body 322.

The number of the stator tooth shoes 324 on each stator tooth body 322 can be adjusted according to actual requirements, specifically, one stator tooth body 322 can be provided with one stator tooth shoe 324, and one stator tooth body 322 can be provided with two stator tooth shoes 324.

It should be noted that two stator tooth shoes 324 may be respectively disposed on the end surface of the stator tooth body 322.

Specifically, when the number of the stator assembly and the rotor assembly 100 is one, the number of the stator tooth shoes 324 is one, and the stator tooth shoes 324 are provided at one end of the stator tooth body 322. When the number of the stator assemblies is one and the number of the rotor assemblies 100 is two, the number of the stator tooth shoes 324 is two, and one stator tooth shoe 324 is provided at each end of the stator tooth body 322.

Further, as shown in fig. 6, the stator assembly further includes: and the matching grooves 330 and the matching ribs 326 are matched in shape, wherein one of the matching grooves 330 and the matching ribs 326 is arranged on the stator tooth body 322, and the other is arranged on the stator tooth shoe 324, so that the stator tooth shoe 324 is connected with the stator tooth body 322 through the matching of the matching grooves 330 and the matching ribs 326.

By arranging the matching convex rib 326 on the stator tooth body 322 and the matching groove 330 on the stator tooth shoe 324, when the stator tooth shoe 324 is assembled with the stator tooth body 322, the matching convex rib 326 is directly inserted into the matching groove 330 to limit the relative movement of the stator tooth shoe 324 and the stator tooth body 322, so that the assembly efficiency of the stator tooth shoe 324 and the stator tooth body 322 is improved, and the connection stability of the stator tooth shoe 324 and the stator tooth body 322 is improved.

Specifically, the cross-sectional area of the stator yoke 312 is one of circular, elliptical, and regular polygonal.

Example 16:

as shown in fig. 4 and 5, on the basis of embodiment 13, embodiment 16 provides a motor 200, the motor 200 including: a stator assembly; and a rotor assembly 100 as in any of the embodiments of the first aspect, the rotor assembly 100 being rotatable relative to the stator assembly.

The number of the stator assemblies is one; the number of rotor assemblies 100 is two.

The stator assembly is located between the two rotor assemblies 100, and the magnetic steels 120 of the two rotor assemblies 100 are arranged oppositely; wherein, along the axial direction of the electric machine 200, there is an air gap between the magnetic steel 120 of each rotor assembly 100 and the stator teeth 314 of the stator assembly.

Further, as shown in fig. 10 and 11, the stator assembly includes a stator core 310 and a plurality of windings 316, the stator core 310 including a plurality of stator teeth 314.

A plurality of stator teeth 314 are spaced about the axis of the stator core 310.

At least one winding 316 is wound around each stator tooth 314.

The magnetizing directions of the magnetic steels 120 of the two rotor assemblies 100 are arranged oppositely; wherein, there is a phase difference angle between the two rotor assemblies 100.

In detail, the stator assembly includes a stator core 310 and a plurality of windings 316, the stator core 310 including a plurality of stator teeth 314.

Through the cooperation structure that rationally sets up two rotor subassemblies 100 for stator tooth 314 sets up along stator core 310's axial, but make winding 316 wind independently when establishing, do not receive the restriction of the stator yoke portion 312 among the correlation technique, and the wire winding mode is nimble, has improved winding 316 and has established efficiency.

In addition, the size of the stator teeth 314 or the distance between the stator teeth 314 is reasonably arranged to adjust the size of the winding slots, and the number of the windings 316 can be flexibly set, so that the power level of the stator core 310 can be reasonably adjusted, and the problem that the power level of the stator core 310 is limited due to the single size of the winding slots in the related art is solved.

In addition, the magnetizing directions of the magnetic steels 120 of the two rotor assemblies 100 are opposite, and a phase difference angle is formed between the two rotor assemblies 100. This setting can offset some subharmonics to reduce vibration noise, guarantee the stationarity and the reliability of motor 200 operation.

Further, as shown in fig. 10 and 11, the stator teeth 314 include a stator tooth body 322, a first stator tooth shoe 324a, and a second stator tooth shoe 324 b.

The first stator tooth piece 324a is connected to a first end of the stator tooth body 322.

And a second stator tooth shoe 324b coupled to a second end of the stator tooth body 322.

Along the axial direction of the motor 200, an air gap is formed between the magnetic steel 120 of one of the two rotor assemblies 100 and the first stator tooth shoe 324a, and an air gap is formed between the magnetic steel 120 of the other rotor assembly 100 and the second stator tooth shoe 324 b.

Stator teeth 314 include a stator tooth body 322, a first stator tooth shoe 324a, and a second stator tooth shoe 324 b. That is, one stator tooth 314 includes a first stator tooth body 322 and two stator tooth shoes 324, and the two stator tooth shoes 324 are connected to both ends of the stator tooth body 322, respectively.

Further, the first stator tooth shoe 324a, the second stator tooth shoe 324b, and the stator tooth body 322 are integrally formed.

The first stator tooth shoe 324a, the second stator tooth shoe 324b and the stator tooth body 322 are integrated through reasonably arranging the matching structures of the first stator tooth shoe 324a, the second stator tooth shoe 324b and the stator tooth body 322, the structure of a product is simplified, the integrity of the product is better, the connecting steps of the first stator tooth shoe 324a, the second stator tooth shoe 324b and the stator tooth body 322 are omitted, and the assembly efficiency of the product is further improved.

Further, the material of stator teeth 314 includes soft magnetic material.

Further, the stator teeth 314 include a plurality of fourth punching sheets, which are stacked along the radial direction or the circumferential direction of the stator core 310.

The stator teeth 314 comprise a plurality of fourth punching sheets, and the fourth punching sheets are stacked along the radial direction or the circumferential direction of the stator core 310 to form the stator teeth 314, so that the magnetic conductivity of the stator core 310 is improved.

Specifically, the stacking direction of the fourth stamped sheet may be along the radial direction of the stator core 310, or may be along the circumferential direction of the stator core 310, and may be flexibly adjusted according to a specific use scenario and a processing requirement.

Further, either one of the first stator tooth shoe 324a and the second stator tooth shoe 324b is detachably connected to the stator tooth body 322.

By reasonably arranging the matching structure of the first stator tooth shoe 324a, the second stator tooth shoe 324b and the stator tooth body 322, any one of the first stator tooth shoe 324a and the second stator tooth shoe 324b can be detachably connected with the stator tooth body 322, and after the winding 316 is wound on the stator tooth body 322, the first stator tooth shoe 324a and the second stator tooth shoe 324b are connected with the stator tooth body 322 to fix the winding 316, so that the winding 316 is prevented from being separated from the stator tooth body 322, and the assembly efficiency of the winding 316 and the stator teeth 314 is further improved.

Example 17:

as shown in fig. 4 and 5, on the basis of embodiment 16, embodiment 17 provides a motor 200, the motor 200 including: a stator assembly; and a rotor assembly 100 as in any one of the embodiments of the first aspect, the rotor assembly 100 being rotatable relative to the stator assembly.

The stator assembly is positioned between the two rotor assemblies 100, and the magnetic steels 120 of the two rotor assemblies 100 are arranged oppositely; wherein, along the axial direction of the motor 200, there is an air gap between the magnetic steel 120 of each rotor assembly 100 and the stator teeth 314 of the stator assembly.

The stator assembly includes a stator core 310 and a plurality of windings 316, the stator core 310 including a plurality of stator teeth 314.

At least one winding 316 is wound around each stator tooth 314.

Further, the rotation directions of the two rotor assemblies 100 are the same, and the rotation speeds of the two rotor assemblies 100 are equal.

Further, the number of the protrusions 114 of the two rotor assemblies 100 is p, and the phase difference angles a and p between the two rotor assemblies 100 satisfy: a is less than or equal to pi/p.

Wherein, the quantity of the convex part 114 of two rotor subassemblies 100 is p, through the cooperation structure of rationally setting two rotor subassemblies 100 for phase difference angle a between two rotor subassemblies 100 satisfies with p: and a is more than or equal to pi/p, and the arrangement can offset certain subharmonics, thereby reducing vibration noise and ensuring the running stability and reliability of the motor 200.

Example 18:

an embodiment of a third aspect of the present invention provides an electrical apparatus, comprising: a rotor assembly 100 as in any of the embodiments of the first aspect; or the motor 200 as in any of the embodiments of the second aspect.

In detail, since the electrical apparatus includes the rotor assembly 100 according to any embodiment of the first aspect or the motor 200 according to any embodiment of the second aspect, all the advantages of the rotor assembly 100 or the motor 200 are provided, which is not mentioned herein.

Example 19:

as shown in fig. 1 to 3, the rotor assembly 100 includes: the rotor core 110 comprises a core body 112 and a plurality of convex parts 114, the plurality of convex parts 114 are positioned on the same side of the core body 112, the plurality of convex parts 114 are arranged around the axis of the core body 112 at intervals, and a mounting groove 116 is surrounded between two adjacent convex parts 114 and the core body 112; a plurality of magnetic steels 120, one magnetic steel 120 is arranged in each mounting groove 116.

Further, the number of the magnetic steel 120 is the same as the number of the convex portions 114, and the magnetic steel is embedded in the mounting groove 116 at intervals. The magnetic steel 120 is attached to the core body 112, and one end of the protrusion 114 facing away from the core body 112 and one end of the magnetic steel 120 facing away from the core body 112 are located on the same plane.

The magnetizing settings of the magnetic steels 120 are all the same.

Further, the magnetic steel 120 is inserted into the mounting groove 116 and then connected to the rotor core 110 by bonding or insert.

Further, the magnetic steel 120 is connected to the rotor core 110 through the plastic-coated portion 130, and the plastic-coated portion 130 covers at least a portion of the rotor core 110 and at least a portion of the magnetic steel 120, so that the rotor core 110 and the magnetic steel 120 form an integrated structure.

Further, the core body 112 and the protrusion 114 are independent structures, and the core body 112 and the protrusion 114 are connected by gluing or insert molding.

Further, the core body 112 is formed by laminating silicon steel sheets in the axial direction of the rotor core 110.

Further, the core body 112 is formed by winding silicon steel sheets from inside to outside in a radial direction of the rotor core 110.

Further, the convex portion 114 is formed by laminating silicon steel sheets in the radial direction or the axial direction of the rotor core 110.

Further, the convex portion 114 is integrally formed by using a solid or powder magnetic conductive material.

Further, the core body 112 is integrally formed with the convex portion 114.

Further, the rotor core 110 is formed by winding silicon steel sheets from the inside to the outside in a radial direction.

Further, the rotor core 110 is integrally formed of a solid or powder magnetic conductive material.

Further, the magnetic steel 120 has the same shape as the convex portion 114.

Further, after the magnetic steel 120 is inserted into the mounting groove 116, a first gap 140 and a second gap 150 are formed between the magnetic steel and the two side protrusions 114, and the shapes of the first gap 140 and the second gap 150 are the same.

Further, the magnetic steel 120 is inserted into the mounting groove 116 and then completely attached to the two side protrusions 114.

Example 20:

as shown in fig. 4-9, a motor 200, such as an axial-flux motor, includes:

the stator yoke 312 is provided with second coupling structures for coupling the stator teeth 314, which are provided at intervals in the circumferential direction of the stator core 310.

A plurality of stator teeth 314, stator teeth 314 including a stator tooth body 322 and at least one stator tooth shoe 324, stator tooth body 322 coupled to stator yoke 312 via a second coupling structure. The stator tooth bodies 322 of the stator teeth 314 extend in the axial direction of the stator core 310, and the stator teeth 314 are detachably coupled to the stator yoke 312. The stator yoke 312 is provided with stator yoke slots 318 and/or stator bosses adapted to the shapes of the stator teeth 314, and the stator teeth 314 penetrate through the stator yoke slots 318 and/or the stator bosses to form the stator core 310.

And a plurality of windings 316, wherein at least one winding 316 is wound on each stator tooth 314. When the stator teeth 314 are wound with a plurality of windings 316, the plurality of windings 316 are wound on the stator tooth body 322 at intervals or in sequence.

Rotor assembly 100, rotor assembly 100 includes: the rotor core 110 comprises a core body 112 and a plurality of convex parts 114, the plurality of convex parts 114 are positioned on the same side of the core body 112, the plurality of convex parts 114 are arranged around the axis of the core body 112 at intervals, and a mounting groove 116 is surrounded between two adjacent convex parts 114 and the core body 112; a plurality of magnetic steels 120, one magnetic steel 120 is arranged in each mounting groove 116. The number of the magnetic steel 120 is consistent with the number of the convex parts 114, and the magnetic steel is embedded in the mounting groove 116 at intervals. The magnetic steel 120 is attached to the core body 112, and one end of the protrusion 114 facing away from the core body 112 and one end of the magnetic steel 120 facing away from the core body 112 are located on the same plane. The magnetizing settings of the magnetic steels 120 are all the same.

Further, the core body 112 is formed by winding silicon steel sheets from inside to outside along the radial direction of the rotor core 110.

Further, the core body 112 is integrally formed with the convex portion 114.

Further, the magnetic steel 120 has the same shape as the convex portion 114.

Further, the stator yoke 312 and the stator teeth 314 are formed of soft magnetic or solid magnetically conductive material.

Further, the shape of the stator tooth body 322 includes any one of: cylindrical, trapezoidal and cuboid.

Further, the stator yoke 312 and the stator teeth 314 are formed by laminating silicon steel sheets, the stator yoke 312 is laminated along the radial direction or the axial direction of the stator core 310, and the stator teeth 314 are laminated along the radial direction or the circumferential direction of the stator core 310.

Further, stator tooth shoes 324 are formed integrally with stator tooth body 322.

Further, the stator tooth shoes 324 are detachably connected with the stator tooth body 322.

Further, the number of the stator tooth shoes 324 is one, and the stator tooth shoes 324 are arranged at one end of the stator tooth body 322; or the number of the stator tooth shoes 324 is two, and two ends of the stator tooth body 322 are respectively provided with one stator tooth shoe 324.

Further, the stator yoke slots 318 are spaced from the outer circumferential surface of the stator yoke 312 in the radial direction, and the stator yoke slots 318 are spaced from the inner circumferential surface of the stator yoke 312 in the radial direction; or the stator yoke slot 318 communicates with the outer and/or inner circumferential surface of the stator yoke 312.

Further, the stator boss is formed by radially outwardly extending the outer circumferential surface of the stator yoke 312; and/or the stator boss is formed by the inner circumferential surface of the stator yoke 312 extending radially inward.

The motor 200 includes:

a stator assembly, the stator assembly comprising: a stator yoke 312, a plurality of stator teeth 314, and a plurality of windings 316.

Two rotor assemblies 100, the rotor assemblies 100 comprising: rotor core 110 and magnetic steel 120.

The two rotor assemblies 100 rotate in the same or opposite directions, at the same or different speeds relative to the stator assembly.

The arrangement sequence of the components of the motor 200 is as follows: rotor assembly 100, stator assembly, rotor assembly 100, all have the air gap between the magnet steel 120 of rotor assembly 100 and the stator tooth boots 324 of the stator assembly.

Example 21:

as shown in fig. 10 and 11, the motor 200 includes:

a stator assembly, the stator assembly comprising:

and the stator teeth 314 comprise a stator tooth body 322, a first stator tooth shoe 324a and a second stator tooth shoe 324b, the first stator tooth shoe 324a and the second stator tooth shoe 324b are respectively positioned at two ends of the stator tooth body 322, and the stator tooth body 322 extends along the axial direction of the stator core 310.

A plurality of windings 316, the windings 316 being wound around the stator body 322 at intervals or completely.

Two rotor assemblies 100, the rotor assembly 100 comprising: the rotor core 110 comprises a core body 112 and a plurality of convex parts 114, the plurality of convex parts 114 are positioned on the same side of the core body 112, the plurality of convex parts 114 are arranged around the axis of the core body 112 at intervals, and a mounting groove 116 is surrounded between two adjacent convex parts 114 and the core body 112; a plurality of magnetic steels 120, one magnetic steel 120 is arranged in each mounting groove 116. The number of the magnetic steel 120 is consistent with the number of the convex parts 114, and the magnetic steel is embedded in the mounting groove 116 at intervals. The magnetic steel 120 is attached to the core body 112, and one end of the protrusion 114 facing away from the core body 112 and one end of the magnetic steel 120 facing away from the core body 112 are located on the same plane. The magnetizing settings of the magnetic steels 120 are all the same. The magnetizing directions of the magnetic steels 120 of the two rotor assemblies 100 are arranged oppositely; there is a phase difference angle between the two rotor assemblies 100. In the axial direction of the electric machine 200, there is an air gap between the magnetic steel 120 of each rotor assembly 100 and the stator teeth 314 of the stator assembly.

Further, the core body 112 is integrally formed with the convex portion 114.

Further, the magnetic steel 120 has the same shape as the convex portion 114.

Further, the stator teeth 314 are integrally formed using a soft magnetic material.

Further, the stator tooth body 322 is cylindrical.

Further, the stator teeth 314 are formed by laminating silicon steel sheets, and the stator teeth 314 are laminated in the radial direction or the circumferential direction.

Further, the two rotor assemblies 100 rotate in the same direction and at the same speed.

In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present specification, the description of "one embodiment," "some embodiments," "specific embodiments," etc., means 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 utility model. 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.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotor assembly, comprising:

the rotor core comprises a core body and a plurality of convex parts, the convex parts are positioned on the same side of the core body, the convex parts are arranged at intervals around the axis of the core body, and a mounting groove is surrounded between each two adjacent convex parts and the core body;

and the mounting groove is internally provided with one magnetic steel.

2. The rotor assembly of claim 1,

one end of the convex part, which is far away from the iron core body, and the magnetic steel are positioned on the same plane; and/or

The magnetic pole directions of any two magnetic steels are the same.

3. The rotor assembly of claim 1 or 2, further comprising:

the magnetic steel and the rotor core are connected through the first connecting structure.

4. The rotor assembly of claim 3,

the first connecting structure comprises an adhesion part and an adhesion matching part, one of the adhesion part and the adhesion matching part is arranged on the magnetic steel, the other one of the adhesion part and the adhesion matching part is arranged on the rotor iron core, and the adhesion part is adhered to the adhesion matching part; and/or

The first connecting structure comprises a clamping part and a clamping matching part, one of the clamping part and the clamping matching part is arranged on the magnetic steel, the other one of the clamping part and the clamping matching part is arranged on the rotor iron core, and the clamping part and the clamping matching part are clamped; and/or

The first connecting structure comprises a locking part, and the locking part penetrates through one of the magnetic steel and the rotor core and is locked into the other one of the magnetic steel and the rotor core.

5. The rotor assembly of claim 3,

the first connecting structure comprises a plastic-coated part, the first part of the plastic-coated part is coated on at least one part of the magnetic steel, and the second part of the plastic-coated part is coated on at least one part of the rotor core.

6. The rotor assembly of claim 1 or 2,

the core body is integrally formed with the projection.

7. The rotor assembly of claim 1 or 2,

the iron core body is connected with the convex part in an adhering mode; and/or

The iron core body is connected with the convex part in a clamping manner; and/or

The iron core body and the convex part are connected through a fastening piece in a fastening mode.

8. The rotor assembly of claim 1 or 2,

the iron core body comprises a plurality of first punching sheets, and the first punching sheets are stacked along the axial direction of the rotor iron core; or

The iron core body comprises second stamped sheets, and the second stamped sheets are wound and arranged along the radial direction of the rotor iron core; or

The convex part comprises a plurality of third punching sheets, the third punching sheets are arranged in a stacked mode along the axial direction of the rotor core, or the third punching sheets are arranged in a stacked mode along the radial direction of the rotor core.

9. The rotor assembly of claim 1 or 2,

the convex part is made of soft magnetic material or solid steel.

10. The rotor assembly of claim 1 or 2,

the shape of the convex part is the same as that of the magnetic steel.

11. The rotor assembly of claim 1 or 2,

one of the two adjacent convex parts forms a first side wall of the mounting groove, the other convex part forms a second side wall of the mounting groove, a first gap is formed between the first side wall and the magnetic steel, a second gap is formed between the second side wall and the magnetic steel, and the shape of the first gap is the same as that of the second gap; or

Any one of the two adjacent convex parts is attached to the magnetic steel.

12. An electric machine, comprising:

a stator assembly; and

a rotor assembly as claimed in any one of claims 1 to 11, the rotor assembly being rotatable relative to the stator assembly.

13. The electrical machine of claim 12,

the number of the stator assemblies is one, the number of the rotor assemblies is two, the stator assemblies are positioned between the two rotor assemblies, and the magnetic steels of the two rotor assemblies are arranged oppositely; along the axial direction of the motor, an air gap is formed between the magnetic steel of each rotor assembly and the stator teeth of the stator assembly; or

The number of the stator component and the rotor component is one, and along the axial direction of the motor, an air gap is formed between the magnetic steel of the rotor component and the stator teeth of the stator component.

14. The electric machine of claim 13, wherein the stator assembly comprises:

a stator core, the stator core comprising:

a stator yoke;

the stator teeth are arranged around the axis of the stator core at intervals, the stator teeth are arranged along the axial direction of the stator core, and the stator teeth are detachably connected with the stator yoke part;

and each stator tooth is wound with at least one winding.

15. The electrical machine of claim 14,

and the stator yoke part is provided with a second connecting structure, and the second connecting structure is detachably connected with the stator teeth.

16. The electric machine of claim 15, wherein the second connection structure comprises:

a stator yoke slot to which the stator tooth is penetrated, a portion of an outer circumferential wall of the stator yoke being recessed to form the stator yoke slot, or a portion of an inner circumferential wall of the stator yoke being recessed to form the stator yoke slot; or

A stator yoke hole through which the stator teeth are pierced, the stator yoke hole penetrating the stator yoke in an axial direction of the stator core; or

The stator boss, the stator tooth with stator boss joint, the partly orientation of the periphery wall of stator yoke portion deviates from the axis of stator core is protruding in order to form the stator boss, or the partly orientation of the internal perisporium of stator yoke portion the axis of stator core is protruding in order to form the stator boss.

17. The electric machine of any of claims 14 to 16, wherein the stator teeth comprise:

the stator tooth body is arranged along the axial direction of the stator iron core;

and the stator tooth shoe is detachably connected with the stator tooth body, or the stator tooth body and the stator tooth shoe are integrally formed.

18. The electric machine of claim 17,

when the number of the stator assembly and the rotor assembly is one, the number of the stator tooth shoes is one, and the stator tooth shoes are arranged at one end of the stator tooth body;

when the number of the stator assemblies is one, and the number of the rotor assemblies is two, the number of the stator tooth shoes is two, and two ends of the stator tooth body are respectively provided with one stator tooth shoe.

19. The electric machine of claim 13, wherein when the number of stator assemblies is one and the number of rotor assemblies is two, the stator assembly comprises:

a stator core, the stator core comprising:

a plurality of stator teeth spaced about an axis of the stator core;

the stator comprises a plurality of stator teeth, a plurality of stator teeth and a plurality of stator coils, wherein at least one winding is wound on each stator tooth;

the magnetizing directions of the magnetic steels of the two rotor assemblies are opposite;

wherein, there is a phase difference angle between two said rotor assemblies.

20. The electric machine of claim 19, wherein the stator teeth comprise:

the first stator tooth shoe is connected with the first end of the stator tooth body;

the second stator tooth shoe is connected with the second end of the stator tooth body;

along the axial direction of the motor, an air gap is formed between the magnetic steel of one of the two rotor assemblies and the first stator tooth shoe, and an air gap is formed between the magnetic steel of the other rotor assembly and the second stator tooth shoe.

21. The electric machine of claim 20,

the first stator tooth shoe, the second stator tooth shoe and the stator tooth body are integrally formed.

22. The electric machine of claim 19,

the stator teeth are made of soft magnetic materials.

23. The electrical machine of claim 19,

the stator tooth includes a plurality of fourth punching, a plurality of fourth punching radially or the circumference along stator core piles up the setting.

24. The electric machine of claim 20,

any one of the first stator tooth shoe and the second stator tooth shoe is detachably connected with the stator tooth body.

25. The electrical machine according to any of the claims 19 to 24,

the rotating directions of the two rotor assemblies are the same, and the rotating speeds of the two rotor assemblies are equal.

26. The electrical machine according to any of the claims 19 to 24,

the number of the convex parts of the two rotor assemblies is p, and the phase difference angle a between the two rotor assemblies and the p satisfy that: a is less than or equal to pi/p.

27. An electrical device, comprising:

a rotor assembly as claimed in any one of claims 1 to 11; or

An electric machine as claimed in any one of claims 12 to 26.