CN213754120U

CN213754120U - Stator punching sheet, stator core, stator, motor and household appliance

Info

Publication number: CN213754120U
Application number: CN202023313412.0U
Authority: CN
Inventors: 梁峻毓; 朱守民; 陈超; 李剑雄
Original assignee: GD Midea Environment Appliances Manufacturing Co Ltd
Current assignee: GD Midea Environment Appliances Manufacturing Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-07-20
Anticipated expiration: 2030-12-30

Abstract

The utility model provides a stator is towards piece, stator core, stator, motor and household electrical appliances. The stator punching sheet comprises a stator yoke portion and a plurality of stator teeth, the number of the stator teeth is multiple, the plurality of stator teeth are separably arranged on the stator yoke portion, the stator teeth comprise first tooth ends deviating from the stator yoke portion, and a gap is formed between at least one group of adjacent two first tooth ends in the plurality of first tooth ends. The utility model discloses an at least a set of adjacent first tooth in the messenger a plurality of first tooth holds has the clearance to can make stator slot and rotor chamber intercommunication that this adjacent stator tooth formed, and then realize improving the magnetic circuit, improve the motor performance.

Description

Stator punching sheet, stator core, stator, motor and household appliance

Technical Field

The utility model relates to the technical field of electric machines, particularly, relate to a stator towards piece, a stator core, a stator, a motor and a household electrical appliances.

Background

At present, in the existing stator structure, the stator teeth and the stator yoke are separately arranged, and the stator teeth can form a closed inner circle for placing the rotor in consideration of the stability of the whole structure of the stator after the stator teeth and the stator yoke are pressed. However, the structure of enclosing the inner circle has a certain influence on the magnetic circuit of the stator and the performance of the motor having the stator.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

Therefore, the first aspect of the present invention is to provide a stator punching sheet.

A second aspect of the present invention is to provide a stator core.

A third aspect of the present invention is to provide a stator.

A fourth aspect of the present invention is to provide an electric motor.

A fifth aspect of the present invention is to provide a home appliance.

In view of this, according to the utility model discloses a first aspect provides a stator punching sheet, including stator yoke portion and a plurality of stator tooth, stator tooth quantity is a plurality of, and a plurality of stator tooth detachable sets up on stator yoke portion, and the stator tooth is including deviating from the first tooth end of stator yoke portion, has the clearance between two first tooth ends that at least a set of is adjacent in a plurality of first tooth ends.

The utility model provides a stator punching sheet includes stator yoke portion and stator tooth, stator yoke portion is for having the structure of cavity. The stator yoke comprises mounting structures distributed along an outer edge of the stator yoke, preferably symmetrically distributed with respect to the stator yoke axis. In particular, the mounting structure may be any one or combination of a threaded hole, a through hole, a blind hole. The stator yoke is connected with other components through the mounting structure, prevents that stator yoke from taking place the skew.

Further, stator yoke portion includes location structure, location structure sets up the corner at the stator yoke outward flange, location structure includes a first location structure and a plurality of second location structure, first location structure is different with second location structure appearance, stator yoke portion can only realize stator yoke portion's correct assembly through first location structure and corresponding part cooperation in the assembling process, when stator yoke portion assembles with wrong angle, second location structure can't cooperate with first location structure matched parts, stator yoke portion can't assemble, and then realize stator yoke portion's mistake proofing dress function.

The stator yoke further comprises a plurality of protrusions and positioning grooves, the protrusions are arranged on one side of the surface, perpendicular to the axis of the stator yoke, the positioning grooves are arranged on the surface of the opposite side, and the projections of the positioning grooves and the protrusions along the axis of the stator yoke are overlapped with each other. Two stator yoke portion that fold can mutually support the joint through the protrusion that corresponds and constant head tank, realize two stator yoke portion's connection.

Further, the stator teeth are separably arranged on the inner wall of the cavity of the stator yoke portion, when the stator teeth and the stator yoke portion are in a separation state, winding processing is carried out on the stator teeth, the winding difficulty is small in the separation state of the stator teeth, assembly is easy, and coil stacking can be avoided. After the stator winding is assembled, the stator teeth provided with the stator winding can be assembled on the stator yoke, so that the stator yoke and the stator teeth are relatively fixed. The number of stator teeth is plural, and preferably, the number of stator teeth is even. And a space is reserved between any two adjacent stator teeth, and the adjacent two stator teeth form a stator slot.

Further, a plurality of stator teeth are disposed on the stator yoke, the stator teeth including first tooth ends facing away from the stator yoke. Furthermore, a plurality of first tooth ends are symmetrically distributed relative to the axis of the stator punching sheet, a hollow rotor cavity is formed in a surrounding mode, and the shape of the rotor cavity is an axisymmetric geometric shape. Preferably, the rotor cavity may be cylindrical in shape. At least one group of adjacent two first tooth ends in the plurality of first tooth ends has a gap therebetween, specifically, the adjacent two first tooth ends may be connected or disconnected, and the gap is provided between the two disconnected first tooth ends, preferably, the number of the gaps is even, and the even number of the gaps are symmetrically distributed relative to the center of the rotor cavity. In particular, the number of gaps may be 2, 4, 6, 8, 10, 12, 14, 16. Further, the gap between the two first tooth ends penetrates in the axial direction of the stator yoke.

The stator punching sheet comprises a stator core and a stator core, wherein the stator core is provided with two stator teeth, the stator teeth are provided with two first tooth ends which form a gap, the two stator teeth are provided with a first stator slot, the two first tooth ends are adjacent, the first stator slot is communicated with a rotor cavity through the gap, and the communicated first stator slot and the rotor cavity can play a role in improving a stator magnetic circuit with the stator punching sheet, so that the motor performance is improved.

The specific processing procedure of the stator is as follows:

in an initial state, gaps do not exist among the plurality of stator teeth, any two adjacent stator teeth are connected with each other, and the plurality of stator teeth are integrally machined and formed to form a stator tooth part.

The stator tooth parts are provided with the connecting structures, so that the connection of the two overlapped stator tooth parts can be realized, the overlapping assembly of the plurality of stator tooth parts is further completed, and the stator tooth parts are formed after the overlapping assembly of the plurality of stator tooth parts.

And then assembling the insulator on the stator tooth part group, wherein the insulator is sleeved outside the stator tooth part group to form the stator tooth part group with the insulator.

And winding the stator winding on the stator tooth group with the insulating member to form the wound stator. And then assembling the wound stator and the stator yoke part, wherein the stator yoke part and the wound stator are in interference fit, and after the stator yoke part and the wound stator are fixed relatively, cutting the joint between at least two adjacent stator teeth in the stator tooth part to ensure that a gap exists between at least two adjacent stator teeth to form the stator.

In one possible design, further, each adjacent set of the plurality of first tooth ends has a gap therebetween.

In the design, a gap is formed between every two adjacent first tooth ends in the first tooth ends, and any stator slot in the stator punching sheet can be communicated with the rotor cavity through the gap. It can be understood that the more the number of the gaps is, the more the improvement effect on the magnetic circuit is obvious, all the stator slots are communicated with the rotor cavity through the gaps, the magnetic circuit can be improved to the maximum extent, and the performance of the motor is greatly improved.

In one possible design, further, the plurality of stator teeth includes a first tooth and a second tooth, the first tooth being of a different configuration than the second tooth.

In this design, the plurality of stator teeth includes a first tooth and a second tooth, and preferably the first tooth and the second tooth are equal in number, each being an even number. The first teeth and the second teeth are different in structure, and different distances and different structures are formed between adjacent or similar stator teeth by arranging the first teeth and the second teeth which are different in structure. The stator winding is wound on the stator teeth, and the winding treatment can be carried out by selecting a proper distance or a proper structure according to the winding mode. Specifically, the usage of the stator windings is related to the spacing of the stator teeth, and the larger the spacing of the stator teeth, the larger the usage of the stator windings. The stator winding is wound on the stator teeth which are close to each other, so that the using amount of the stator winding can be saved. On the other hand, if the stator winding is easy to slip off from the stator teeth, the stator teeth with the bends can be selected for winding, and the stator teeth with the bends have a certain limiting effect on the stator winding, so that the stator winding can be prevented from slipping off from the stator teeth.

In one possible design, each first tooth is further arranged between two second teeth.

In this design, each first tooth is disposed between two second teeth, it being understood that the first and second teeth are alternately spaced on the stator yoke. Because the first tooth and the second tooth have different structures, the first tooth and the second tooth are alternately arranged on the stator yoke part, so that the stator teeth with various distances and various structures can be regularly arranged, the stator winding can meet different winding requirements when winding, and the stator winding can be regularly arranged.

In one possible design, further, the first tooth end of the plurality of stator teeth forms a rotor cavity. The stator tooth includes the root of tooth, and the tip that stator yoke portion was kept away from at the root of tooth setting to first tooth end, and wherein, the root of tooth of first tooth is followed the radial extension in rotor chamber, and the root of tooth of second tooth is bent along the direction that deviates from the rotor chamber and is extended.

In this design, the first tooth ends of the plurality of stator teeth form a rotor cavity. The stator tooth includes the root of tooth, and the tip of stator yoke portion is kept away from at the root of tooth setting to first tooth end, and the root of tooth of first tooth is followed the radial extension in rotor chamber, and the root of tooth of second tooth is bent along the direction that deviates from the rotor chamber and is extended. The tooth root of the second tooth can be bent and extended towards different directions.

Further, the area surrounded by two adjacent stator teeth forms a stator slot, and the tooth root part of the first tooth and the tooth root part of the second tooth can form stator slots with various shapes. Stator slots of different shapes can be matched with various winding modes of the stator winding, and various use requirements are met. Furthermore, the projection areas of the stator slots formed by the tooth root parts of the first teeth and the tooth root parts of the second teeth on the end faces of the stator punching sheets are different, and the stator slots with different projection areas can be matched with stator windings with different quantities, so that various use requirements are met.

Furthermore, the first teeth and the second teeth are alternately distributed, so that compared with stator slots formed by stator teeth with different structures, the shape and the projection area of the stator slots can be easily adjusted, and the use requirements of different stator windings can be met more easily. In particular, the stator slot may be formed by two first teeth, or by two second teeth, or, of course, by one first tooth and one second tooth.

In one possible design, the stator tooth further comprises a second tooth end, and the second tooth end is arranged at the end of the tooth root part close to the stator yoke part. The stator punching sheet further comprises an assembling portion, the assembling portion is arranged on the stator yoke portion, and the second tooth end is matched with the assembling portion.

In this design, the stator tooth further includes a second tooth tip, the second tooth tip is disposed at an end portion of the tooth root portion close to the stator yoke portion, and a projection of the second tooth tip on an end surface perpendicular to the axial direction is in a non-perfect circle shape, and specifically, may be in a trapezoidal shape. The side, close to stator yoke, of the second tooth end is wide, the side, far away from stator yoke, of the second tooth end is narrow, and the side, far away from stator yoke, of the second tooth end is provided with a closing-in structure.

Further, the stator punching sheet further comprises an assembling portion arranged on the stator yoke portion, the assembling portion is of an approximately trapezoidal groove structure, one side, close to the stator teeth, of the assembling portion is narrow, one side, far away from the stator teeth, of the assembling portion is wide, and one side, close to the stator teeth, of the assembling portion is narrow.

Furthermore, the second tooth end is matched with the assembling portion, the second tooth end is of a protruding structure, the assembling portion is of a groove structure, and the second tooth end is matched with the assembling portion through the protrusion and the groove, so that the stator teeth are connected with the stator yoke portion. It can be understood that, the cooperation mode between second tooth end and the assembly portion is interference fit, makes stator tooth and stator yoke portion mutually support firmly, prevents that the stator tooth from deviating from in the stator yoke portion.

According to the utility model discloses a second aspect provides a stator core, including the stator punching that any design provided above-mentioned provided, the stator is towards the quantity of piece a plurality ofly, and a plurality of stator punching pile piles up in order to form stator core.

The utility model provides a stator core includes the stator towards the piece, and the quantity of stator towards the piece is a plurality of, and a plurality of stator towards the piece and pile up in order to form stator core. Understandably, the magnetic field passing through the stator punching sheet can generate eddy current loss, the eddy current loss is related to the thickness of the stator punching sheet, the thickness of a single stator punching sheet is reduced, and the eddy current loss can be reduced by correspondingly arranging a plurality of stator punching sheets. Furthermore, the stacking of the stator punching sheets enables the overall strength of the stator core to be effectively improved.

In one possible design, further, a part of each stator punching sheet protrudes in the axial direction to form a positioning protrusion and a positioning groove; the stator core comprises a first punching sheet and a second punching sheet which are adjacent to each other, and the positioning protrusion of the first punching sheet is arranged in the positioning groove of the second punching sheet.

In the design, a part of each stator punching sheet protrudes in the axial direction to form a positioning protrusion and a positioning groove. At least one stator tooth of the stator punching sheet is provided with a positioning protrusion and a positioning groove, the positioning protrusion and the positioning groove are respectively arranged on two opposite surfaces of the stator tooth, and the projections of the positioning protrusion and the positioning protrusion on the end surface perpendicular to the axial direction are mutually overlapped. Preferably, all the stator teeth of the stator punching sheet are provided with positioning protrusions and positioning grooves.

Furthermore, the positioning protrusions and the positioning grooves are different in number, the second teeth are bent teeth, the first teeth are straight teeth, the surface area of the second teeth is larger than that of the first teeth, the second teeth can be provided with more positioning protrusions and positioning grooves relative to the first teeth, understandably, the more the number of the positioning protrusions and the positioning grooves is, and the more the stator punching sheet is connected.

Further, because set up the protrusion and the constant head tank of different quantity on first tooth and the second tooth, the accessible corresponds protrusion and constant head tank between two adjacent stator punching mutually support the riveting, realize the connection of two stator punching. And because the first tooth is different with the structure of second tooth, be provided with the protrusion and the constant head tank of different quantity on first tooth and the second tooth, can prevent that oblique insertion, wrong insertion problem from appearing in two stator punching.

Furthermore, because the first teeth and the second teeth are arranged adjacently, the stator punching sheet can be found when a slight-angle oblique insertion and wrong insertion problem occurs.

According to the utility model discloses a third aspect provides a stator, including the stator core that any design provided above provided.

The utility model provides a stator, including the stator core that any above-mentioned design provided, consequently have this stator core's whole beneficial effect, no longer give consideration to here.

In one possible design, the stator further comprises an insulator disposed on the stator core and a stator winding disposed on the insulator.

In this design, the stator further includes an insulator disposed on the stator core. Specifically, the insulator is connected with the stator teeth, the stator teeth are partially covered by the insulator, the stator teeth are partially exposed outside the insulator, and the stator yoke is arranged outside the insulator.

Specifically, the insulating material may be made of plastic with good insulating property and high strength, such as plastic parts formed by any one or any combination of high temperature resistant epoxy molding compound, heat resistant modified polyester powder plastic, and compression plastic. The working of plastics is easily shaping, and insulating properties is good, and intensity is high to can realize good insulating effect and support effect.

Further, the stator winding is arranged on the insulating part and is a conductor coated with insulating materials, and current conduction can be achieved. The stator winding is wound outside the insulating part, and the insulating isolation is realized between the stator winding and the stator core through the insulating material outside the stator winding and the insulating part sleeved outside the stator teeth.

Furthermore, the stator core is partially exposed outside the insulating part, so that the distance between the partially exposed stator core and the stator winding is longer, and the insulating material outside the stator winding and air or other insulating materials are used as insulating media between the exposed stator core and the stator winding, so that the stator core and the stator winding are insulated and isolated.

In a possible design, further, the insulating member includes a first insulating member and a second insulating member, the second insulating member is detachably disposed on the first insulating member, the second insulating member and the first insulating member form a mounting cavity, and a portion of the stator core is located in the mounting cavity.

In this design, the insulating member is divided into two parts, a first insulating member and a second insulating member, and the second insulating member is detachably provided on the first insulating member. First insulating part and second insulating part all are provided with connection structure, and specifically, connection structure can be for connector link, protruding and recess interference fit structure, screw connection structure, can realize the high-speed joint or the dismantlement between first insulating part and the second insulating part, make and connect between first insulating part and the second insulating part reliable and stable. Through designing the insulating part into first insulating part and second insulating part, make the dismantlement or the installation of insulating part more convenient, improved stator core's assembly or maintenance efficiency.

Further, the second insulator and the first insulator form a mounting cavity, and a portion of the stator core is located in the mounting cavity. The first insulating part and the second insulating part are connected in place through the connecting structure to form a hollow mounting cavity, the positioning tooth part in the stator core is located in the mounting cavity, the part of the positioning tooth part is exposed outside the insulating part, and the stator yoke part of the stator core is surrounded outside the insulating part.

According to a fourth aspect of the present invention, there is provided an electric machine comprising a stator provided by any of the above designs.

Specifically, the motor is a distributed winding single-phase asynchronous motor.

The utility model provides a motor, including the stator that any above-mentioned design provided, consequently have whole beneficial effect of this stator, no longer describe herein.

According to a fifth aspect of the present invention, there is provided a household electrical appliance, comprising a motor provided by any one of the above designs.

Specifically, the household appliances are fan heaters, exhaust fans and fans.

The utility model provides a household electrical appliances, including the motor that any above-mentioned design provided, consequently have the whole beneficial effect of this motor, no longer describe herein.

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

Drawings

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

fig. 1 shows a front view of a stator yoke portion of a stator lamination in accordance with an embodiment of the invention;

fig. 2 shows a top view of a portion of a stator core without a stator yoke mounted and with stator windings in accordance with an embodiment of the present invention;

fig. 3 shows a top view of a portion of a stator core without a stator yoke mounted and with an insulator in accordance with an embodiment of the present invention;

fig. 4 shows a top view of a stator tooth in accordance with an embodiment of the present invention;

fig. 5 shows a front view of a portion of a stator core without a stator yoke mounted and with an insulator in accordance with an embodiment of the present invention;

fig. 6 shows a partial stator top view without a stator yoke mounted in accordance with an embodiment of the present invention;

fig. 7 shows a schematic view of a stator structure without a stator yoke mounted in an embodiment in accordance with the invention;

figure 8 shows a top view of a stator in an embodiment in accordance with the invention;

fig. 9 shows a schematic view of a stator structure according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 9 is:

100 parts of the stator punching sheet are added,

a stator yoke portion 110, a mounting structure 111, a positioning structure 112, a first positioning structure 1121, a second positioning structure 1122, an assembly portion 113,

120 stator teeth, 121 first tooth end, 122 root, 123 second tooth end, 124 first tooth, 125 second tooth,

130 of the rotor chamber, and a rotor chamber,

140 of the gap between the upper and lower plates,

150 of the stator slots are arranged in the stator,

200 of the stator core,

300 a stator is arranged in the stator,

310, 311, 312, a second insulator,

320 of the stator winding, and a stator winding,

400 stator teeth.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. 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 stator lamination 100, a stator core 200, a stator 300, a motor, and a home appliance provided according to some embodiments of the present invention are described below with reference to fig. 1 to 9.

Example one

According to the present invention in a first aspect, as shown in fig. 1 to 4, a stator punching sheet 100 is provided, which includes a stator yoke 110 and a plurality of stator teeth 120, the number of the stator teeth 120 is plural, the plurality of stator teeth 120 are detachably disposed on the stator yoke 110, the stator teeth 120 include a first tooth end 121 deviating from the stator yoke 110, and a gap 140 is provided between at least one group of two adjacent first tooth ends 121 in the plurality of first tooth ends 121.

The utility model provides a stator punching sheet 100 includes stator yoke portion 110 and stator tooth 120, stator yoke portion 110 is for having the structure of cavity. Stator yoke 110 includes mounting structures 111, mounting structures 111 being distributed along an outer edge of stator yoke 110, preferably mounting structures 111 being distributed symmetrically with respect to an axis of stator yoke 110. Specifically, the mounting structure 111 may be any one or combination of a threaded hole, a through hole, a blind hole. Stator yoke 110 is connected to other components by mounting structure 111 to prevent stator yoke 110 from shifting.

Further, stator yoke 110 includes location structure 112, location structure 112 sets up the corner at stator yoke 110 outward flange, location structure 112 includes a first location structure 1121 and a plurality of second location structure 1122, first location structure 1121 is different with second location structure 1122 appearance, stator yoke 110 can only realize the correct assembly of stator yoke 110 through first location structure 1121 and corresponding part cooperation in the assembly process, when stator yoke 110 assembles with wrong angle, second location structure 1122 can't cooperate with first location structure 1121, stator yoke 110 can't assemble, and then realize stator yoke 110's mistake proofing function.

Stator yoke 110 further includes a plurality of protrusions and positioning grooves, stator yoke 110 is provided with a protrusion on one side of a surface perpendicular to the axis of stator yoke 110, and a positioning groove is provided on the opposite side surface, the positioning grooves and the protrusions overlap each other in projection along the axis of stator yoke 110. Two stator yokes 110 that overlap can mutually support the joint through corresponding protrusion and constant head tank, realize two stator yokes 110's connection.

Further, stator tooth 120 is separably arranged on the inner wall of the cavity of stator yoke 110, when stator tooth 120 and stator yoke 110 are in a separated state, winding processing is performed on stator tooth 120, the winding difficulty is small in the separated state of stator tooth 120, assembly is easy, and coil stacking can be avoided. After the stator winding 320 is assembled, the stator teeth 120 with the stator winding 320 mounted thereon may be assembled to the stator yoke 110 such that the stator yoke 110 and the stator teeth 120 are relatively fixed. The number of the stator teeth 120 is plural, and preferably, the number of the stator teeth 120 is even. Any two adjacent stator teeth 120 have a space therebetween, and the adjacent two stator teeth 120 form a stator slot 150.

Further, a plurality of stator teeth 120 are arranged on stator yoke 110, the stator teeth 120 comprising a first tooth end 121 facing away from stator yoke 110. Further, the plurality of first tooth ends 121 are symmetrically distributed relative to the axis of the stator lamination 100, and a hollow rotor cavity 130 is defined, and the shape of the rotor cavity 130 is an axisymmetric geometric shape. Preferably, the rotor chamber 130 may be cylindrical in shape. At least one adjacent set of two first tooth ends 121 of the plurality of first tooth ends 121 has a gap 140 therebetween, specifically, the adjacent two first tooth ends 121 may be connected or disconnected, and the gap 140 is provided between the two disconnected first tooth ends 121, and preferably, the number of the gaps 140 is an even number, and the even number of the gaps 140 are distributed symmetrically with respect to the center of the rotor cavity 130. Specifically, the number of gaps 140 may be 2, 4, 6, 8, 10, 12, 14, 16. Further, the gap 140 between the two first tooth ends 121 penetrates in the axial direction of the stator yoke 110.

The first stator slot 150 is formed between the two stator teeth 120 where the two first tooth ends 121 forming the gap 140 are located, and it can be understood that, because the gap 140 exists between the two adjacent first tooth ends 121, the first stator slot 150 and the rotor cavity 130 can be communicated through the gap 140, and the communicated first stator slot 150 and the rotor cavity 130 can play a role in improving a stator magnetic circuit with the stator punching sheet 100, so that the motor performance is improved.

The specific process of the stator 300 is as follows:

in the initial state, there is no gap 140 between the plurality of stator teeth 120, and any two adjacent stator teeth 120 are connected to each other, and the plurality of stator teeth 120 are integrally formed into the stator tooth portion 400.

The stator tooth portions 400 are provided with connecting structures, so that the connection of two overlapped stator tooth portions 400 can be realized, the overlapping assembly of the plurality of stator tooth portions 400 is further completed, and the stator tooth portions 400 form a stator tooth portion group after the overlapping assembly.

And then assembling the insulating member 310 on the stator tooth part group, wherein the insulating member 310 is sleeved outside the stator tooth part group to form the stator tooth part group with the insulating member 310.

The stator teeth of the tape insulator 310 are wound, and the stator winding 320 is wound around the stator teeth of the tape insulator 310 to form a wound stator. And then assembling the wound stator and the stator yoke 110, wherein the stator yoke 110 and the wound stator are in interference fit, and after the stator yoke 110 and the wound stator are relatively fixed, cutting the joint between at least two adjacent stator teeth 120 in the stator tooth group to ensure that a gap 140 exists between at least two adjacent stator teeth 120, so as to form the stator 300.

In one possible design, further, each adjacent set of the plurality of first tooth ends 121 has a gap 140 therebetween.

In this design, a gap 140 is formed between each adjacent set of the first tooth ends 121, and any stator slot 150 in the stator lamination 100 and the rotor cavity 130 can be communicated through the gap 140. It can be understood that the larger the number of the gaps 140, the more significant the improvement effect on the magnetic circuit, and the stator slots 150 are all communicated with the rotor cavity 130 through the gaps 140, which can improve the magnetic circuit to the greatest extent and greatly improve the motor performance.

Example two

On the basis of the first embodiment, as shown in fig. 1 to 3, the present embodiment specifically defines the structure of the stator lamination 100. The plurality of stator teeth 120 includes a first tooth 124 and a second tooth 125, and the first tooth 124 is different in structure from the second tooth 125.

In this design, plurality of stator teeth 120 includes first teeth 124 and second teeth 125, and preferably, first teeth 124 are the same number as second teeth 125, each even number. The first teeth 124 are different from the second teeth 125 in structure, and the first teeth 124 and the second teeth 125 having different structures are arranged to form different distances and different structures between adjacent or similar stator teeth 120. The stator winding 320 is wound on the stator teeth 120, and the winding process may be performed by selecting an appropriate distance or an appropriate structure according to the winding manner. Specifically, the usage of stator winding 320 is related to the spacing of stator teeth 120, with the larger the spacing of stator teeth 120, the larger the usage of stator winding 320. The stator winding 320 is wound around the stator teeth 120 at a short distance, so that the amount of the stator winding 320 can be saved. On the other hand, if the stator winding 320 is easily slipped off from the stator teeth 120, the stator teeth 120 with the bends can be selected for winding, and the stator winding 320 is limited by the stator teeth 120 with the bends, so that the stator winding 320 can be prevented from slipping off from the stator teeth 120.

In one possible design, each first tooth 124 is further arranged between two second teeth 125.

In this design, each first tooth 124 is disposed between two second teeth 125, and it is understood that the first teeth 124 and the second teeth 125 are alternately disposed at intervals on the stator yoke 110. Because the first teeth and the second teeth 125 have different structures, the first teeth 124 and the second teeth 125 are alternately arranged on the stator yoke 110, so that the stator teeth 120 with various distances and structures can be regularly arranged, the stator winding 320 can meet different winding requirements during winding, and the stator winding 320 can be regularly arranged.

In one possible design, further, the first tooth ends 121 of the plurality of stator teeth 120 form a rotor cavity 130. The stator teeth 120 comprise a tooth root 122, and the first tooth end 121 is arranged at the end of the tooth root 122 away from the stator yoke 110, wherein the tooth root 122 of the first tooth 124 extends in the radial direction of the rotor cavity 130, and the tooth root 122 of the second tooth 125 extends bent away from the rotor cavity 130.

In this design, a first tooth end 121 of the plurality of stator teeth 120 forms a rotor cavity 130. The stator teeth 120 comprise tooth roots 122, the first tooth ends 121 are arranged at the ends of the tooth roots 122 remote from the stator yoke 110, the tooth roots 122 of the first teeth 124 extend in the radial direction of the rotor cavity 130, and the tooth roots 122 of the second teeth 125 extend bent in a direction away from the rotor cavity 130. The root portion 122 of the second tooth 125 may be bent and extended in different directions.

Further, the area enclosed by two adjacent stator teeth 120 forms the stator slot 150, and the tooth root 122 of the first tooth 124 and the tooth root 122 of the second tooth 125 can form the stator slot 150 in various shapes. The stator slots 150 with different shapes can be adapted to various winding modes of the stator winding 320, so that various use requirements are met. Further, the projection areas of the stator slots 150 formed by the tooth root 122 of the first tooth 124 and the tooth root 122 of the second tooth 125 on the end face of the stator lamination 100 are different, and the stator slots 150 with different projection areas can be adapted to different numbers of stator windings 320, so that various use requirements are met.

Further, the first teeth 124 and the second teeth 125 are alternately distributed, and it can be understood that the shape and the size of the projected area of the stator slot 150 can be easily adjusted compared to the stator slot 150 formed by the stator teeth 120 with different structures, so as to more easily meet the use requirements of different stator windings 320. Specifically, the stator slot 150 may be formed by two first teeth 124, two second teeth 125, or one first tooth 124 and one second tooth 125.

In one possible design, stator tooth 120 further includes a second tooth end 123, and second tooth end 123 is disposed at an end of tooth root 122 near stator yoke 110. The stator punching sheet 100 further comprises an assembling portion 113, the assembling portion 113 is arranged on the stator yoke portion 110, and the second tooth end 123 is matched with the assembling portion 113.

In this design, stator tooth 120 further includes second tooth tip 123, second tooth tip 123 is disposed at an end of tooth root 122 close to stator yoke 110, and projection of second tooth tip 123 on an end face perpendicular to the axial direction is in a non-perfect circle shape, specifically, may be in a trapezoidal shape. The side of the second tooth end 123 close to the stator yoke 110 is wider, the side far from the stator yoke 110 is narrower, and the side of the second tooth end 123 far from the stator yoke 110 has a closing structure.

Further, the stator punching sheet 100 further comprises an assembling portion 113 arranged on the stator yoke portion 110, the assembling portion 113 is of an approximately trapezoidal groove structure, one side of the assembling portion 113 close to the stator teeth 120 is narrow, one side of the assembling portion 113 far away from the stator teeth 120 is wide, and one side of the assembling portion 113 close to the stator teeth 120 is narrow.

Further, the second tooth end 123 is adapted to the assembling portion 113, the second tooth end 123 is in a protrusion structure, the assembling portion 113 is in a groove structure, and the second tooth end 123 and the assembling portion 113 are matched through the protrusion and the groove, so that the stator teeth 120 and the stator yoke 110 are connected. It can be understood that the second tooth end 123 and the fitting portion 113 are engaged by interference fit, so that the stator teeth 120 and the stator yoke 110 are firmly engaged with each other, and the stator teeth 120 are prevented from being pulled out of the stator yoke 110.

EXAMPLE III

According to the utility model discloses a second aspect, as shown in fig. 6, provides a stator core 200, including the stator punching sheet 100 that any above-mentioned design provided, the quantity of stator punching sheet 100 is a plurality of, and a plurality of stator punching sheets 100 pile up in order to form stator core 200.

The utility model provides a stator core 200 includes stator towards piece 100, and the quantity of stator towards piece 100 is a plurality of, and a plurality of stator towards piece 100 piles up in order to form stator core 200. It can be understood that the magnetic field passing through the stator lamination 100 generates eddy current loss, the magnitude of the eddy current loss is related to the thickness of the stator lamination 100, the thickness of a single stator lamination 100 is reduced, and the eddy current loss can be reduced by correspondingly arranging a plurality of stator laminations 100. Further, the stacking of the plurality of stator laminations 100 effectively improves the overall strength of the stator core 200.

In one possible design, further, a part of each stator lamination 100 protrudes in the axial direction to form a positioning protrusion and a positioning groove; the stator core 200 includes a first punching sheet and a second punching sheet which are adjacent to each other, and a positioning protrusion of the first punching sheet is arranged in a positioning groove of the second punching sheet.

In this design, a portion of each stator lamination 100 protrudes in the axial direction to form a positioning protrusion and a positioning groove. At least one stator tooth 120 of the stator lamination 100 is provided with a positioning protrusion and a positioning groove, the positioning protrusion and the positioning groove are respectively arranged on two opposite surfaces of the stator tooth 120, and projections of the positioning protrusion and the positioning protrusion on the end surface perpendicular to the axial direction are mutually overlapped. Preferably, all the stator teeth 120 of the stator lamination 100 are provided with positioning protrusions and positioning grooves.

Further, the number of the positioning protrusions and the positioning grooves formed on the first tooth 124 and the second tooth 125 is different, and since the second tooth 125 is a bent tooth, the first tooth 124 is a straight tooth, the surface area of the second tooth 125 is larger than that of the first tooth, and the second tooth 125 can be provided with more positioning protrusions and positioning grooves relative to the first tooth 124, it can be understood that the more the number of the positioning protrusions and the positioning grooves is, the more the connection of the stator lamination 100 is stable.

Further, because the first tooth 124 and the second tooth 125 are provided with the protrusions and the positioning grooves with different quantities, the two adjacent stator laminations 100 can be mutually matched and riveted through the corresponding protrusions and the positioning grooves, and the connection of the two stator laminations 100 is realized. Moreover, because the first tooth 124 and the second tooth 125 have different structures, the first tooth 124 and the second tooth 125 are provided with different numbers of protrusions and positioning grooves, so that the problems of oblique insertion and wrong insertion of the two stator laminations 100 can be prevented.

Further, because the first tooth 124 and the second tooth 125 are adjacently arranged, the problem of oblique insertion and wrong insertion of a small angle of one stator punching sheet 100 can be found.

The stator punching sheet 100 comprises a stator yoke portion 110 and a plurality of stator teeth 120, the number of the stator teeth 120 is multiple, the plurality of stator teeth 120 are detachably arranged on the stator yoke portion 110, the stator teeth 120 comprise first tooth ends 121 departing from the stator yoke portion 110, and a gap 140 is formed between at least one group of adjacent two first tooth ends 121 in the plurality of first tooth ends 121.

The specific process of the stator 300 is as follows:

Example four

According to a third aspect of the present invention, as shown in fig. 4 to 9, there is provided a stator 300 comprising a stator core 200 provided by any of the above-mentioned designs.

The utility model provides a stator 300, including the stator core 200 that any above-mentioned design provided, consequently have this stator core 200's whole beneficial effect, no longer describe herein.

In one possible design, further, the stator 300 further includes an insulator 310 and a stator winding 320, the insulator 310 is disposed on the stator core 200, and the stator winding 320 is disposed on the insulator 310.

In this design, the stator 300 further includes an insulator 310, and the insulator 310 is disposed on the stator core 200. Specifically, the insulator 310 is connected to the stator teeth 120, the stator teeth 120 are partially covered by the insulator 310, and partially exposed outside the insulator 310, and the stator yoke 110 is disposed outside the insulator 310.

Specifically, the insulating member 310 may be made of a plastic with good insulating property and high strength, such as a plastic member formed by any one or any combination of a high temperature resistant epoxy molding compound, a heat resistant modified polyester powder plastic, and a compression plastic. The working of plastics is easily shaping, and insulating properties is good, and intensity is high to can realize good insulating effect and support effect.

Further, the stator winding 320 is disposed on the insulator 310, and the stator winding 320 is a conductor coated with an insulating material, so that current conduction can be achieved. The stator winding 320 is wound outside the insulator 310, and the stator winding 320 and the stator core 200 are insulated and isolated by the insulating material outside the stator winding 320 and the insulator 310 sleeved outside the stator teeth 120.

Further, the stator core 200 is partially exposed outside the insulating member 310, and it can be understood that the distance between the partially exposed stator core 200 and the stator winding 320 is relatively long, and the insulating material outside the stator winding 320 and air or other insulating materials are used as insulating media between the exposed stator core 200 and the stator winding 320, so as to realize the insulating isolation between the stator core 200 and the stator winding 320.

In one possible design, further, the insulating member 310 includes a first insulating member 311 and a second insulating member 312, the second insulating member 312 is detachably disposed on the first insulating member 311, the second insulating member 312 and the first insulating member 311 form a mounting cavity, and a portion of the stator core 200 is located in the mounting cavity.

In this design, the insulating member 310 is divided into two parts, a first insulating member 311 and a second insulating member 312, and the second insulating member 312 is detachably disposed on the first insulating member 311. First insulating part 311 and second insulating part 312 all are provided with connection structure, and specifically, connection structure can be connector link, protruding and recess interference fit structure, screw connection structure, can realize quick connection or the dismantlement between first insulating part 311 and the second insulating part 312, makes to be connected between first insulating part 311 and the second insulating part 312 reliable and stable. By designing the insulating member 310 as the first insulating member 311 and the second insulating member 312, the insulating member 310 is more conveniently detached or installed, and the assembly or maintenance efficiency of the stator core 200 is improved.

Further, the second insulator 312 and the first insulator 311 form a mounting cavity in which a portion of the stator core 200 is located. The first insulator 311 and the second insulator 312 are connected in place by a connecting structure to form a hollow mounting cavity, the positioning teeth in the stator core 200 are partially located in the mounting cavity and partially exposed outside the insulator 310, and the stator yoke 110 of the stator core 200 is surrounded outside the insulator 310.

EXAMPLE five

EXAMPLE six

Specifically, the household appliances are fan heaters, exhaust fans and fans.

In the present application, the term "plurality" means two or more unless expressly 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present specification, the description of the terms "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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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 stator punching sheet is characterized by comprising:

a stator yoke;

the stator comprises a plurality of stator teeth, the plurality of stator teeth are detachably arranged on the stator yoke portion, the stator teeth comprise first tooth ends facing away from the stator yoke portion, and gaps are formed between at least one group of adjacent first tooth ends.

2. The stator lamination as recited in claim 1,

each adjacent set of the plurality of first tooth ends has a gap therebetween.

3. The stator lamination as recited in claim 1 or 2,

the plurality of stator teeth includes a first tooth and a second tooth, the first tooth having a different structure than the second tooth;

each of the first teeth is disposed between two of the second teeth.

4. The stator lamination as recited in claim 3,

a first tooth end of the plurality of stator teeth forms a rotor cavity;

the stator teeth include:

and the tooth root part is arranged at the end part of the tooth root part, which is far away from the stator yoke part, wherein the tooth root part of the first tooth extends along the radial direction of the rotor cavity, and the tooth root part of the second tooth bends and extends along the direction which is far away from the rotor cavity.

5. A stator core, comprising: the stator lamination of any one of claims 1 to 4, the number of the stator laminations is multiple, and the multiple stator laminations are stacked to form the stator core.

6. A stator comprising the stator core according to claim 5.

7. The stator of claim 6, further comprising:

an insulator disposed on the stator core;

a stator winding disposed on the insulator.

8. The stator of claim 7, wherein the insulator comprises:

a first insulating member;

the second insulating part is detachably arranged on the first insulating part, a mounting cavity is formed by the second insulating part and the first insulating part, and one part of the stator core is located in the mounting cavity.

9. The stator of claim 8, wherein the insulator further comprises:

the first mounting part is arranged on the first insulating part;

and the second installation part is arranged on the second insulating piece and is matched with the first installation part.

10. The stator according to claim 9,

first installation department with one in the second installation department is the spacing groove, first installation department with another in the second installation department is spacing protrusion.

11. An electrical machine comprising a stator according to any one of claims 6 to 10.

12. An electric household appliance comprising a motor according to claim 11.