CN208272720U - Stator core, Stator and electrical machine - Google Patents

Abstract

The utility model discloses a kind of stator cores, Stator and electrical machine, stator core includes multiple laminations, axially stacked setting of multiple laminations along stator core, each iron chip type becomes cyclic structure and multiple punch fragments including circumferentially setting gradually from beginning to end, seam is formed between two neighboring punch fragment, it is staggered along the axial direction of stator core, the seam of n-th layer and the n-th+m layers of seam, wherein, n, m is positive integer, and n, m meet n >=1, m >=1 respectively, seam is formed as straightway.Stator core according to the present utility model, easy to process, eddy-current loss is smaller, has good rigidity.

Description

Stator core, Stator and electrical machine

Technical field

The utility model relates to technical field of motors, more particularly, to a kind of stator core, Stator and electrical machine.

Background technique

Piecemeal iron core is common stator core construction, and stator core is allowed to open the winding space of stator winding, To insert more copper wire in the stator slot of stator core to improve the utilization rate of stator slot, to reduce the electricity of stator winding Resistance, and then the efficiency of motor is improved, to save electric energy.

In the related technology, there are the following problems for the structure of stator core: since the silicon steel plate of manufacture stator core is deposited Poor in same plate, so that piecemeal iron core can have axial stitching error during fabrication, the silicon steel plate of different layers occurs in stitching portion Interlayer vortex conducting phenomenon reduces the efficiency of motor so that the eddy-current loss of stator core increases, and weakens piecemeal iron The using effect of core；The integral rigidity of stator core is poor so that stator core generate in use it is biggish vibration and Noise limits the use of stator core so that stator core is adapted only to the utilization of the light load motor such as blower；Using flat electromagnetism Line winding group can be further improved the utilization rate of stator slot, however, having attachment device on piecemeal iron core, can not use flat electromagnetism Line winding group；The splicing of piecemeal iron core is unfavorable for automated production.

Utility model content

The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model One purpose is to propose a kind of stator core, and the stator core is easy to process, and eddy-current loss is smaller, have it is good just Property.

Another purpose of the utility model is to propose a kind of stator with said stator iron core.

The further object of the utility model is to propose a kind of motor with said stator.

According to the stator core of the utility model first aspect embodiment, comprising: multiple laminations, multiple laminations Along the axially stacked setting of the stator core, each iron chip type become cyclic structure and including circumferentially head and the tail successively The multiple punch fragments being arranged form seam between the two neighboring punch fragment, along the axial direction of the stator core, n-th layer The seam is staggered with the n-th+m layers of the seam, wherein described n, m are positive integer, and described n, m meet n respectively >=1, m >=1, the seam are formed as straightway.

According to the stator core of the utility model embodiment, by the way that the seam of n-th layer is staggeredly set with the n-th+m layers of seam It sets, can reduce the axial stitching error of lamination, the punch fragment of different layers is avoided the conducting of interlayer vortex occur now in seam crossing As to reduce the eddy-current loss of stator core；Meanwhile the punch fragment for avoiding different layers is easily detached from, it is fixed to improve The integral rigidity of sub- iron core.When stator core is applied to motor, the efficiency of motor can be promoted, the vibration of motor is effectively reduced And noise, the applicability of motor is improved, the experience effect of user is improved；By setting straightway for seam, simplify The structure of punch fragment, to facilitate the processing of punch fragment, convenient for punch fragment seam crossing connection.

Some embodiments according to the present utility model, the stator core include multiple points circumferentially set gradually from beginning to end Block iron core, each piecemeal iron core include multiple punch fragments of the axially stacked setting along the stator core, and every A punch fragment includes along the radially connected yoke portion and teeth portion of the stator core, the yoke portion of each punch fragment Positioned at the outside of the correspondence teeth portion, the circumferential width of the outer end in the yoke portion is greater than the circumferential width of the inner end in the yoke portion.

Some embodiments according to the present utility model connect on the cross section of the stator core, described in the n-th layer Angle between the projection and the projection of the n-th+m layers of the seam of seam is α, and the α meets: α ≠ 0 °, and described n-th The intersection point of straight line and the straight line where the projection of described n-th+m layers of the seam where the projection of the seam of layer is located at The inside in the yoke portion.

Some embodiments according to the present utility model, the axial direction along the stator core, the iron core from the n-th layer The shape of the lamination of piece to the n-th+b layers is identical, wherein the b is positive integer, and the b meets: b >=1.

Some embodiments according to the present utility model, the axial direction along the stator core, the punching from the n-th layer The shape of the punch fragment of section to described n-th+b layers is identical.

Some embodiments according to the present utility model, multiple laminations are connected by multiple rivets.

Some embodiments according to the present utility model, multiple rivet one-to-one correspondence are located in multiple punch fragments.

Some embodiments according to the present utility model, the minimum clearance of the seam are x, and the x meets: x≤0.02mm.

Some embodiments according to the present utility model, each punch fragment meet with a thickness of t, the t: t≤ 0.5mm。

Implement according to the stator of the utility model second aspect embodiment, including according to the above-mentioned first aspect of the utility model The stator core of example.

The vortex damage of stator is reduced by using above-mentioned stator core according to the stator of the utility model embodiment Consumption, improves the integral rigidity of stator.

Implement according to the motor of the utility model third aspect embodiment, including according to the above-mentioned second aspect of the utility model The stator of example.

The efficiency of motor can be effectively promoted by using above-mentioned stator according to the motor of the utility model embodiment, The vibration and noise for reducing motor, promotes the experience effect of user.

The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description In become obvious, or recognized by the practice of the utility model.

Detailed description of the invention

The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will Become obvious and be readily appreciated that, in which:

Fig. 1 is the structural schematic diagram according to the stator core of the utility model embodiment；

Fig. 2 is the explosive view of stator core shown in Fig. 1；

Fig. 3 is the assembled schematic diagram of piecemeal iron core shown in Fig. 2；

Fig. 4 is the n-th layer lamination of stator core shown in Fig. 1 and the structural schematic diagram of the n-th+m layers of lamination；

Fig. 5 is the structural schematic diagram of the n-th layer lamination of stator core shown in Fig. 4；

Fig. 6 is the structural schematic diagram of the n-th+m layers of lamination of stator core shown in Fig. 4；

Fig. 7 is the n-th+m layers of iron of stator core shown in the n-th layer lamination and Fig. 6 of stator core shown in Fig. 5 The structural schematic diagram of chip stack；

Fig. 8 is the structural schematic diagram according to the stator core of the utility model another embodiment；

Fig. 9 is the fractionation and assembled process schematic according to the stator core of the utility model embodiment；

Figure 10 is the fractionation and assembled process schematic according to the stator core of the utility model another embodiment；

Figure 11 is the eddy-current loss schematic diagram according to the stator core of the utility model embodiment；

Figure 12 is the vortex of the eddy-current loss and traditional stator core according to the stator core of the utility model embodiment Comparison diagram is lost；

Figure 13 is the motor amplitude of radial vibration and traditional stator iron according to the stator core of the utility model embodiment The motor amplitude of radial vibration comparison diagram of core；

Figure 14 is the structural schematic diagram according to the stator of the utility model embodiment.

Appended drawing reference:

Stator 200, insulation assembly 101,

Stator core 100, rivet 100a, vortex 100b,

Lamination 1, seam 10, intersection point 10a, punch fragment 11, stator slot 110, yoke portion 111, teeth portion 112,

Piecemeal iron core 2.

Specific embodiment

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model Limitation.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", The orientation or positional relationship of the instructions such as " axial direction ", " radial direction ", " circumferential direction " is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, define " the One ", the feature of " second " can explicitly or implicitly include one or more of the features.In the description of the utility model In, unless otherwise indicated, the meaning of " plurality " is two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

Below with reference to Fig. 1-Figure 13 description according to the stator core 100 of the utility model first aspect embodiment.

As shown in Fig. 1-Figure 13, according to the stator core 100 of the utility model embodiment, including multiple laminations 1.

For multiple laminations 1 along the axially stacked setting of stator core 100, each lamination 1 is formed as cyclic structure and every A lamination 1 includes the multiple punch fragments 11 circumferentially set gradually from beginning to end, forms seam 10 between two neighboring punch fragment 11, Seam 10 is formed as straightway, staggeredly sets along the axial direction of stator core 100, the seam of n-th layer 10 and the n-th+m layers of seam 10 It sets, wherein n, m are positive integer, and n, m meet n >=1, m >=1 respectively.

For example, as shown in Fig. 1-Figure 13, stator core 100 can be generally formed into tubular structure, and multiple laminations 1 are along iron The thickness direction of chip 1 is sequentially stacked, and each punch fragment 11 can be generally formed into arc structure, and multiple punch fragments 11 are along iron The circumferential direction of chip 1 is set gradually from beginning to end, between two neighboring punch fragment 11 being provided at circumferentially spaced along lamination 1 so that Seam 10, relative to each other two of two neighboring punch fragment 11 are formed between the both ends relative to each other of two neighboring punch fragment 11 The edge at end can be all formed as straightway, allow entire seam 10 to be formed as straight line section, to simplify punch fragment 11 Structure, so that the processing of punch fragment 11 is facilitated, convenient for connection of the punch fragment 11 at seam 10.

Wherein, it is staggered along the axial direction of stator core 100, the seam of n-th layer 10 and the n-th+m layers of seam 10, so that The punch fragment 11 of n-th layer and the n-th+m layers of punch fragment 11 can overlap setting, and the seam 10 of every layer of lamination 1 can be only located at In respective layer, that is to say, that the seam 10 of n-th layer does not extend in (n+1)th layer or (n-1)th layer, reduces the axis of lamination 1 To stitching error, the punch fragment 11 of different layers is avoided to occur interlayer vortex conducting phenomenon at seam 10, that is to say, that from avoiding The vortex 100b of the punch fragment 11 of n-th layer will not be flow to by seam 10 in (n+1)th layer of punch fragment 11 or (n-1)th layer of punching In section 11, to reduce the eddy-current loss of stator core 100, when stator core 100 is applied to motor, motor can be promoted Efficiency；Meanwhile the punch fragment 11 for avoiding different layers is easily detached from, and improves the integral rigidity of stator core 100, when fixed When sub- iron core 100 is applied to motor, the vibration and noise of motor can be effectively reduced, the applicability of motor is improved, improves The experience effect of user.

Here, it should be noted that " being staggered " refer on the cross section of stator core 100, the seam 10 of n-th layer Projection and the projection of the n-th+m layers of seam 10 be not completely coincident, that is to say, that on the cross section of stator core 100, n-th The projection of the seam 10 of layer can be overlapped completely with the projection of the n-th+m layers of seam 10, a part of can also be overlapped and another Part is not overlapped；" seam 10 is formed as straightway " can refer to that entire seam 10 is formed as straight line section.

According to the stator core 100 of the utility model embodiment, by by the seam 10 and the n-th+m layers of seam of n-th layer 10 are staggered, and can reduce the axial stitching error of lamination 1, and the punch fragment 11 of different layers is avoided layer occur at seam 10 Between vortex conducting phenomenon, to reduce the eddy-current loss of stator core 100；Meanwhile the punch fragment 11 for avoiding different layers is easy It is detached from, improves the integral rigidity of stator core 100, facilitate transport, the circulation of stator core 100.Work as stator core 100 be applied to motor when, the efficiency of motor can be promoted, effectively reduce the vibration and noise of motor, improve motor be applicable in Property, improve the experience effect of user；By setting straightway for seam 10, the structure of punch fragment 11 is simplified, thus side Punch fragment 11 processing, convenient for connection of the punch fragment 11 at seam 10.

In some embodiments of the utility model, stator core 100 includes multiple points circumferentially set gradually from beginning to end Block iron core 2, each piecemeal iron core 2 include multiple punch fragments 11 of the axially stacked setting along stator core 100, and each punching Section 11 includes along the radially connected yoke portion 111 and teeth portion 112 of stator core 100, and the yoke portion 111 of each punch fragment 11 is located at pair The outside of teeth portion 112 is answered, the circumferential width of the outer end in yoke portion 111 is greater than the circumferential width of the inner end in yoke portion 111.For example, as schemed Shown in 1- Fig. 8, multiple punch fragments 11 are sequentially stacked along the thickness direction of punch fragment 11 and form piecemeal iron core 2, multiple piecemeal iron Core 2 is set gradually from beginning to end along the circumferential direction of stator core 100, yoke portion 111 and teeth portion 112 along punch fragment 11 radially inner and outer setting, And in the circumferential direction of stator core 100, the width in yoke portion 111 can be greater than teeth portion 112 width, two neighboring teeth portion 112 it Between limit stator slot 110.As a result, multiple piecemeal iron cores 2 can along the circumferential direction and/or radial motion of stator core 100 so that Stator core 100 can be split as multiple piecemeal iron cores 2, and each piecemeal iron core 2 is the structure being separately separated and any at this time There is no any connection structure etc. restrained each other to be convenient between two piecemeal iron cores 2 so that the freedom degree of piecemeal iron core 2 is higher Carry out coiling in piecemeal iron core 2, be conducive to the automated production of stator core 100, for example, piecemeal iron core 2 may be implemented rotation around Line, it can the manufacture of compatible flat electromagnetic wire winding coil improves the applicability of stator core 100；When 2 coiling of piecemeal iron core After the completion, multiple piecemeal iron cores 2 can be spliced into complete stator core 100 again, to facilitate the manufacture of stator 200.

Specifically, the teeth portion 112 of each punch fragment 11 is connected to the inner opposite end in corresponding yoke portion 111, in a first direction, The width of 111 outer end of yoke portion is d2, and the width of 111 inner end of yoke portion is d1, and d2 > d1, allows multiple 2 edges of piecemeal iron core The radial motion (for example, as shown in Figure 9) of stator core 100, quickly splits into multiple piecemeal iron cores 2 for stator core 100, Simultaneously in split process, the movement between two neighboring piecemeal iron core 2 will not be interfered, and realize each piecemeal iron core 2 Self-movement, and due in split process, multiple piecemeal iron cores 2 be radial motion along stator core 100 so that more The action consistency of a piecemeal iron core 2 is high, to be conducive to automated production, convenient for the operation of relevant automatic production equipment, benefit In the structure for simplifying the automated production equipment, the cost of equipment is reduced.Wherein, first direction is the circumferential direction of stator core 100, For example, first direction is vertical with the direction of the center line of corresponding teeth portion 112 in the example of Fig. 5 and Fig. 6.

In some specific embodiments of the utility model, as shown in figs, in the cross section of stator core 100 Angle between the projection of upper, n-th layer seam 10 and the projection of the n-th+m layers of seam 10 is α, and α meets: α ≠ 0 °, and n-th The intersection point 10a of straight line where the projection of the seam 10 of layer and the straight line where the projection of the n-th+m layers of seam 10 is located at yoke portion 111 inside, intersection point 10a can be located in corresponding stator slot 110 at this time, so that the friendship between two neighboring piecemeal iron core 2 Folded area is larger, to be not easily disconnected from the axial direction of stator core 100 between two neighboring piecemeal iron core 2, only when piecemeal iron Two adjacent piecemeal iron cores 2 can be just kept completely separate by core 2 after moving enough distances, ensure that the strong of stator core 100 Degree.

In some specific embodiments of the utility model, the axial direction along stator core 100, the lamination 1 from n-th layer to The shape of n-th+b layers of lamination 1 is identical, wherein b is positive integer, and b meets: b >=1, so that the shape of stator core 100 It is more regular, facilitate the processing of stator core 100.For example, the lamination 1 of entire stator core 100 be z (z is positive integer, And z >=2) layer, b can be less than or equal to z；Wherein, as b=z, the structure of stator core 100 is further simplified, is facilitated The processing of stator core 100.

Further, the axial direction along stator core 100, the shape of 11 to the n-th+b layers of the punch fragment from n-th layer of punch fragment 11 Shape is identical, that is to say, that the shape of this b+1 layers of punch fragment 11 is all the same, so that the processing of punch fragment 11 is facilitated, convenient for real The batch machining of existing punch fragment 11, promotes the processing efficiency of punch fragment 11.For example, in the example of Fig. 1-Fig. 3, b=1, at this point, N can be odd number, ensure that the cooperation reliability at the circumferential both ends of punch fragment 11.

It is understood that the axial direction along stator core 100,11 to the n-th+b layers of the punch fragment from n-th layer of punch fragment 11 Shape can be with not exactly the same；For example, the shape of the punch fragment 11 of 11 to the n-th+b layers of the punch fragment of n-th layer can be complete Not identical, the seam 10 of the adjacent two layers in n-th layer to the n-th+b layers is staggered at this time, but not limited to this.

Optionally, as Figure 1-Figure 4, multiple laminations 1 are connected by multiple rivet 100a, that is to say, that in stator It is connected in the axial direction of iron core 100, between two neighboring lamination 1 by least one rivet 100a, to realize adjacent two It is quick connected between a lamination 1, while ensure that and be connected reliably between two neighboring lamination 1.

Specifically, as Figure 1-Figure 4, multiple rivet 100a one-to-one correspondence are located in multiple punch fragments 11, that is to say, that A rivet 100a can be equipped in each punch fragment 11, to simplify the structure of punch fragment 11, rivet 100a can be with punching Section 11 forms simultaneously, such as rivet 100a can be imitated with punch fragment 11 together punch forming with promoting the processing of stator core 100 Rate.

It is understood that specific location of the rivet 100a in corresponding punch fragment 11 can specifically be set according to practical application It sets, such as rivet 100a can be located at the center of corresponding punch fragment 11, to guarantee the integral rigidity of stator core 100.

In some specific embodiments of the utility model, the minimum clearance of seam 10 is x, and x meets: x≤0.02mm makes Seam 10 has suitable minimum clearance, the gap for avoiding seam 10 is excessive and causes to connect between two neighboring punch fragment 11 Difficulty is connect, to facilitate the assembly of punch fragment 11.

Optionally, each punch fragment 11 with a thickness of t, t satisfaction: t≤0.5mm so that punch fragment 11 have it is suitable thick Degree, the thickness for avoiding punch fragment 11 is excessive and leads to 11 processing difficulties of punch fragment, thus guaranteeing that it is reliable that punch fragment 11 uses Under the premise of property, facilitate the processing of punch fragment 11.Wherein, punch fragment 11 can be with punch forming.

According to the stator 200 of the utility model second aspect embodiment, including according to the above-mentioned first aspect of the utility model The stator core 100 of embodiment.For example, as shown in figure 14, stator 200 may include successively setting from beginning to end along the circumferential of stator 200 The multiple block stators set, each block stator include piecemeal iron core 2, stator winding and insulation assembly 101, stator winding winding On the stator tooth that the teeth portion 112 of multiple punch fragments 11 is formed and between the two neighboring stator tooth of stator winding, insulation assembly 101 It is located at the outside of stator winding, to play insulating effect.

Stator 200 is reduced by using above-mentioned stator core 100 according to the stator 200 of the utility model embodiment Eddy-current loss, improve the integral rigidity of stator 200.

Implement according to the motor of the utility model third aspect embodiment, including according to the above-mentioned second aspect of the utility model The stator 200 of example.Wherein, motor can be rotating electric machine, but not limited to this.

The effect of motor can be effectively promoted by using above-mentioned stator 200 according to the motor of the utility model embodiment Rate reduces the vibration and noise of motor, promotes the experience effect of user.

According to the motor of the utility model embodiment other constitute and operate for those of ordinary skill in the art and It says it is all known, is not detailed herein.

Below with reference to Fig. 1-Figure 13 with two specific embodiment detailed descriptions according to the stator of the utility model embodiment Iron core 100.It is worth understanding, it is described below to be merely illustrative, rather than to the concrete restriction of utility model.

Embodiment one

In the present embodiment, as shown in Fig. 1-Fig. 7, Fig. 9 and Figure 11-Figure 13, stator core 100 includes along stator core The shape of 24 laminations, 1,24 laminations 1 of 100 axially stacked setting is all the same, and each lamination 1 substantially forms For closed annular structure and each lamination 1 includes 12 punch fragments 11 circumferentially set gradually from beginning to end, each punching Thickness t≤0.5mm of section 11 forms seam 10 between two neighboring punch fragment 11, and each seam 10 is formed as straight line section, Minimum clearance x≤0.02mm of seam 10, along the axial direction of stator core 100, the seam of n-th layer 10 and the n-th+m layers of seam 10 It is staggered, it is identical from the shape of 11 to the n-th+b layers of punch fragment of punch fragment 11 of n-th layer, wherein and n, m are positive integer, and N is odd number, m=2, b=1, can be further improved the manufacture efficiency of stator core 100, guarantees that punch fragment 11 is attached in seam 10 Close rigidity.

Specifically, on the cross section of stator core 100, the projection of the seam 10 of n-th layer and the n-th+m layers of seam 10 Angle α ≠ 0 ° between projection, and the projection institute of the straight line and the n-th+m layers of seam 10 where the projection of the seam 10 of n-th layer Straight line intersection point 10a be located at yoke portion 111 projection on and intersection point 10a projection be located at yoke portion 111 inner end edge at.

As shown in Fig. 1-Fig. 7, stator core 100 includes set gradually from beginning to end 12 points of circumferential direction along stator core 100 Block iron core 2, each piecemeal iron core 2 includes 24 punch fragments 11 of the axially stacked setting along stator core 100, due to along stator The axial direction of iron core 100, the seam of n-th layer 10 and the n-th+m layers of seam 10 are staggered so that two neighboring piecemeal iron core 2 it Between both ends relative to each other in wherein one end be formed with protrusion, the other end forms fluted, avoid two neighboring piecemeal iron Core 2 misplaces along the axial direction of stator core 100, it is ensured that the integral rigidity of stator core 100 also avoids two neighboring piecemeal Axial stitching error is generated between iron core 2, effectively reduces the eddy-current loss of stator core 100.With reference to Figure 11-Figure 13, Figure 12 In show the actual measurement eddy-current loss of stator core 100 in traditional stator core and the application, can be obvious from Figure 11 To find out, the eddy-current loss of the stator core 100 of the application is only in the punch fragment 11 in same layer, and traditional stator core Eddy-current loss is not only in the punch fragment 11 in same layer, but also there are also interlayer eddy-current losses, so that the stator core of the application 100 eddy-current loss 27W is far below the eddy-current loss 36W of traditional stator core, and the eddy-current loss of traditional stator core is bright It is aobvious to increase by 30% or more, and the eddy-current loss of the stator core 100 of the application is overall structure with stator core in the prior art Eddy-current loss it is substantially suitable, the stator core 100 of the application is more easy to process than above-mentioned integrally-built stator core, convenient for fortune Defeated circulation can effectively promote the efficiency of motor when the stator core 100 of the application is applied to motor；Figure 13 shows biography The stator core of system be applied to motor when, motor radial vibration and the application in stator core 100 be applied to motor when, electricity The radial vibration of machine, from the graph, it is apparent that use the radial vibration of the motor of the stator core 100 of the application for 0.43m/s²Radial vibration 1.03m/s relative to the motor using traditional stator core²Reduce 50% or more, and it is existing Use the radial vibration of the motor of overall structure stator core for 0.35m/s in technology², using the stator core 100 of the application Motor radial vibration and in the prior art using overall structure stator core motor radial vibration difference it is little, thus As it can be seen that the stator core 100 of the application has good rigidity, it can effectively weaken the vibration and noise of motor.

It is connected between axial, the two neighboring punch fragment 11 of stator core 100 by a rivet 100a, rivet 100a With the corresponding punch forming simultaneously of punch fragment 11, and each punch fragment 11 includes along the radially connected yoke portion of stator core 100 111 and teeth portion 112, yoke portion 111 be located at the outside of teeth portion 112, limit stator slot 110 between two neighboring teeth portion 112；When fixed When sub- iron core 100 is applied to stator 200, the winding of stator 100 is wrapped in teeth portion 112 and winding is located in stator slot 110.

Further, as shown in Figure 5 and Figure 6, in a first direction, the width of 111 outer end of yoke portion be d2, in yoke portion 111 The width at end is d1, and d2 > d1, wherein first direction is the circumferential direction of stator core 100, first direction and corresponding teeth portion 112 Center line direction it is vertical.

It, can be by 12 piecemeal iron cores 2 along the diameter of stator core 100 when multiple laminations 1 are assembled into stator core 100 To being displaced outwardly (for example, as shown in Figure 9), stator core 100 is quickly split；When each piecemeal iron core 2 completes coiling, 12 piecemeal iron cores 2 can moving radially inwardly (for example, as shown in Figure 9), stator iron is rapidly completed along stator core 100 The assembling again of core 100, so that stator core 200 is formed as firm entirety.

According to the stator core 100 of the utility model embodiment, structure is simple, firm, is readily transported, circulates, fractionation side Just, at the same split after the freedom degree with higher of piecemeal iron core 2, facilitate manufacture, compatible flat electromagnetic wire winding；It is fixed to reduce The eddy-current loss of sub- iron core 100, in favor of promoting the efficiency of motor；The punch fragment 11 for avoiding different layers is easily detached from, and is mentioned The integral rigidity for having risen stator core 100 facilitates transport, the circulation of stator core 100, effectively reduces the vibration of motor and make an uproar Sound improves the applicability of motor.

Embodiment two

As shown in Figure 9 and Figure 10, the present embodiment is roughly the same with the structure of embodiment one, wherein identical component uses phase Same appended drawing reference, the difference is that: it is straight on the cross section of stator core 100, where the projection of the seam 10 of n-th layer The intersection point 10a of straight line where the projection of line and the n-th+m layers of seam 10 is located at the inside in yoke portion 111, and intersection point 10a can be at this time In corresponding stator slot 110.

It, can be by 12 piecemeal iron cores 2 along the week of stator core 100 when multiple laminations 1 are assembled into stator core 100 To expansion (for example, as shown in Figure 10), so that multiple linearly arrangements of piecemeal iron core 2 in 12 piecemeal iron cores 2, can lead at this time It crosses at least one bobbin winder device and coiling is carried out to piecemeal iron core 2；When each piecemeal iron core 2 completes coiling, 12 piecemeal iron Core 2 can be along original route assembly (for example, as shown in Figure 10), the assembling again of stator core 100 is rapidly completed, so that stator Iron core 200 is formed as firm entirety.

During above-mentioned expansion stator core 100, the overlapping area between two neighboring piecemeal iron core 2 is greater than 0, That is not being completely independent between two neighboring piecemeal iron core 2, not being kept completely separate, but pass through two neighboring piecemeal iron core 2 Between overlap realize the axially position between two neighboring piecemeal iron core 2, to be completed to piecemeal iron core 2 coiling Afterwards, it is advantageously implemented the accurate splicing of piecemeal iron core 2, allows piecemeal iron core 2 preferably along original route assembly, it is fixed to ensure that Consistency after the completion of sub- 100 assembly of iron core.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.

While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that: These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective And modification, the scope of the utility model are defined by the claims and their equivalents.

Claims (11)

1. a kind of stator core characterized by comprising

Multiple laminations, multiple laminations along the stator core axially stacked setting, each iron chip type at For cyclic structure and multiple punch fragments including circumferentially setting gradually from beginning to end, is formed and connect between the two neighboring punch fragment Seam is staggered, wherein described along the axial direction of the stator core, the seam of n-th layer and the n-th+m layers of the seam N, m is positive integer, and described n, m meet n >=1, m >=1 respectively, and the seam is formed as straightway.

2. stator core according to claim 1, which is characterized in that the stator core includes circumferentially successively setting from beginning to end The multiple piecemeal iron cores set, each piecemeal iron core include multiple punchings of the axially stacked setting along the stator core Segment, and each punch fragment includes along the radially connected yoke portion and teeth portion of the stator core, each punch fragment The yoke portion be located at the outside of the corresponding teeth portion, the circumferential width of the outer end in the yoke portion is greater than the inner end in the yoke portion Circumferential width.

3. stator core according to claim 2, which is characterized in that on the cross section of the stator core, described n-th Angle between the projection and the projection of the n-th+m layers of the seam of the seam of layer is α, and the α meets: α ≠ 0 °, And straight line of the straight line where the projection of the seam of the n-th layer where with the projection of described n-th+m layers of the seam Intersection point be located at the inside in the yoke portion.

4. stator core according to claim 1, which is characterized in that along the axial direction of the stator core, from the n-th layer The lamination to the n-th+b layers the lamination shape it is identical, wherein the b be positive integer, and the b meet: b ≥1。

5. stator core according to claim 4, which is characterized in that along the axial direction of the stator core, from the n-th layer The punch fragment to described n-th+b layers the punch fragment shape it is identical.

6. stator core according to claim 1, which is characterized in that multiple laminations are connected by multiple rivets.

7. stator core according to claim 6, which is characterized in that multiple rivet one-to-one correspondence are located at multiple described In punch fragment.

8. stator core according to claim 1, which is characterized in that the minimum clearance of the seam is x, and the x meets: x≤0.02mm。

9. stator core according to claim 1 to 8, which is characterized in that each punch fragment with a thickness of T, the t meet: t≤0.5mm.

10. a kind of stator, which is characterized in that including stator core according to claim 1 to 9.

11. a kind of motor, which is characterized in that including stator according to claim 10.