CN100582350C

CN100582350C - Stator of outer rotor-type motor for drum-type washing machine

Info

Publication number: CN100582350C
Application number: CN200580001391A
Authority: CN
Inventors: 李云龙
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2004-02-26
Filing date: 2005-02-24
Publication date: 2010-01-20
Anticipated expiration: 2025-02-24
Also published as: KR101033573B1; KR20050087278A; CN1898433A

Abstract

Stator structure (6) of an outer rotor type motor for a drum type washing machine including an annular core (HC) of a multi-layered structure formed by stacking a steel plate having a belt shaped base (150) and T (151) projected from the base while winding the steel plate in a helix starting from a bottom layer to a top layer, and upper (60a), and lower (60b) insulators of an electric insulating material covered on upper, and lower sides of the helical core in shapes complementary to a shape of the helical core, wherein each of the upper insulator and the lower insulator includes three or more than three fastening portions (600) formed as one body therewith projected from an inner side of the helical core toward a center of the stator for fastening the stator to a fixing side of the tub, the fastening portion has a fastening hole (620a) for fastening the stator to a fixing side of the tub with a fastening member, and each of the bosses of the upper, and lower insulators includes a raised portion (621) projected from a side facing the other insulator toward an opposite insulator.

Description

The stator of the outer rotor-type motor of drum-type washing machine

Technical field

The present invention relates to a kind of drum-type washing machine, more particularly relate to can be applicable to the stator structure of the external-rotor-type BLDC motor of direct-connected drum-type washing machine.

Background technology

Usually, drum-type washing machine is washing agent, washings and clothing to be put under the state of rotating cylinder, rotating cylinder that is rotated by the driving force of motor and the frictional force between the clothing are come cleaning clothes, this drum-type washing machine can cause damage to clothing hardly, clothing is twined, and the clean result that has impact, rubs and rub with the hands.

In the drum-type washing machine of prior art, indirect interconnection system arranged with direct-coupled type, in the washing machine of interconnection system indirectly, driving force is passed to rotating cylinder by the belt that is wrapped on motor pulley and the rotating cylinder pulley indirectly from motor; In the washing machine of direct-coupled type, the rotor of BLDC motor directly links to each other with rotating cylinder, thereby directly driving force is passed to rotating cylinder from motor.

For driving force not directly but pass to the washing machine of rotating cylinder type that energy loss is big in power transmission process, and causes very big noise in power transmission process by motor pulley and rotating cylinder pulley room ground connection at motor.

In view of the above, current for existing these problems in the drum-type washing machine that solves indirect connection, use the trend of the direct-connected drum-type washing machine that has the BLDC motor to increase day by day.

With reference to Fig. 1 direct-connected drum-type washing machine of the prior art is described briefly below.Fig. 1 represents the longitudinal sectional drawing of drum-type washing machine of the prior art.

With reference to Fig. 1, this drum-type washing machine of the prior art is provided with: one is installed in the bucket 2 of the inside of casing 1; One be installed in rotation on the bucket 2 inside middle body on rotating cylinder 3.At the rear portion of bucket 2 motor is arranged, wherein a stator 6 is fixed on the rear wall of bucket, and a rotor 5 surrounds stator 6, and rotor 5 usefulness one are passed spool being connected with rotating cylinder 3 of bucket.

Simultaneously, be equipped with one 21, between door 21 and bucket 2, a packing ring 22 be installed in the front portion of casing 1.

Between the top of the inner surface on casing 1 top and bucket 2 outer peripheral faces, have pendulum spring 23, between the bottom of the inner surface of casing 1 bottom and bucket 2 outer peripheral faces, have a friction shock absorber 24.

The perspective external view of the stator in Fig. 2 presentation graphs 1, Fig. 3 represent to be applied to the perspective diagram of a segment core DC of the stator among Fig. 2.

Be used for making this method unshakable in one's determination in the prior art, one metal sheet is pressed into a unit core, this unit core has T shape portion 151, substrate 150 and projection 500, projection 500 is opposite with T shape portion 151, be provided with fastener hole 500a in each projection 500, then, these unit core are piled up to form the unit core assembly, then along circumferentially these unit core assemblies being connected with each other, thereby finish the manufacturing of stator core, this stator core is known as segment core (Sectional Core).

Projection 500 provides fastener hole 620a, and this fastener hole 620a is used for stator 6 is fastened to the rear wall of bucket, and as the fastening force that keeps bolt.

Yet, this method of utilizing segment core SC to make stator 6, the many materials of not only complicate fabrication process, and loss.

Therefore, HC unshakable in one's determination is favourable even employing is called scroll, in this helical core, the steel plate that will have T shape portion 151 and substrate 150 piles up with twisted, so that reduce spillage of material, makes that this manufacture process is simple, but, because it need bend to spiral form striking out banded metal sheet, therefore, the defective of this helical core is to be used for the projection that stator is fastened on the bucket can not be set at inboard unshakable in one's determination.

This be because, if in the process of making helical core HC, projection 500 is arranged on the inboard unshakable in one's determination, so, unshakable in one's determinationly hindered bending unshakable in one's determination being provided with the big width that the part place that forms the projection on it has.

Therefore, current, in order to adopt this helical core HC, just need a kind of like this stator structure, wherein not by unshakable in one's determination own, but carry out a kind of and projection identical functions segment core SC by other parts.

As a reference, will guaranteeing to be used for that stator is fastened to the projection with fastener hole on the bucket why, to have the reason of importance of enough rigidity as follows.

Rotating cylinder directly by the washing machine of BLDC revolution in, stator be directly installed on the bucket the rear portion on.For the stator net weight greater than 1.5 kilograms, the motor of the big capacity drum-type washing machine of velocity of rotation in 600～2000 rev/mins of scopes, because in high speed rotating, the vibration of stator weight, rotor 5, shake and be out of shape and cause the fastening part of stator 6 to rupture easily.

Especially, in drum-type washing machine, stator 6 is fixed on barrel rear wall when adopting the BLDC motor, here stator 6 axially be arranged essentially parallel to ground, in the vibration meeting that is produced during the washer operation fastening part that is fixed on the stator 6 on barrel rear wall is caused severe impairment.

Therefore, under situation about stator 6 being fastened on the bucket, it is highly important that the projection of fastener hole has enough rigidity.

Summary of the invention

An object of the present invention is to provide a kind of outer rotor-type motor that is used for drum-type washing machine, this motor has to reduce makes the required material and the stator of weight, manufacture process is simple, and can be fixedly mounted in fixation side, for example is mounted on bucket or the supporting shell.

Another object of the present invention provides a kind of new stator structure that can be fixedly mounted in such as the fixation side of bucket or supporting shell, can reduce simultaneously the material of making usefulness as previously mentioned, thereby be applicable to the BLDC motor of drum-type washing machine, only more than 1.5 kilograms, rotating speed is at 0～2000 rev/min or bigger for its stator weight.

Another object of the present invention provides a kind of like this stator structure, this stator structure can prevent to be interfered by the assembling that step caused of assembling upper insulator of stator core and bottom insulating part, and can improve the installability of the cylindrical sleeve on the inner peripheral surface of fastener hole of each upper insulator and bottom insulating part.

By being provided, a kind of stator that is used for the outer rotor-type motor of drum-type washing machine just can realize purpose of the present invention, this stator comprises: the ring-shaped core of a sandwich construction (core), and it has banded substrate and from the steel plate of the outstanding T shape portion (Ts) of this substrate, begin to form with helical this steel plate of reeling to top layer from bottom simultaneously by piling up; The upper insulator of one electrically insulating material is coated over the upside of helical core with the shape with the shape complementarity of helical core; The bottom insulating part of one electrically insulating material when assembling with upper insulator, is coated over the downside of helical core with the shape with the shape complementarity of helical core; Wherein, each upper and lower insulating part comprises the fastening part that is formed one, outstanding from the inboard of helical core towards stator central authorities, be used for stator is fastened to the fixation side of bucket, fastening part has the knuckle (boss) of a formation fastener hole, so that utilize tightening member stator to be fastened to the fixation side of bucket, and each knuckle of upper and lower insulating part comprises a jut, this jut is outstanding towards opposed insulating part from the side in the face of another insulating part, so that the upper and lower insulating part is closely contacted, thereby improve the assembled state of upper and lower insulating part.

In another aspect of the present invention, a kind of stator structure that is used for the outer rotor-type motor of drum-type washing machine, comprise: the ring-shaped core of a sandwich construction, it has banded substrate and begins to form with helical this steel plate of reeling to top layer from bottom simultaneously from the steel plate of the outstanding T shape portion of this substrate by piling up; The upper insulator of one electrically insulating material is coated over the upside of helical core with the shape with the shape complementarity of helical core; The bottom insulating part of one electrically insulating material when assembling with upper insulator, is coated over the downside of helical core with the shape with the shape complementarity of helical core; Wherein, each upper insulator and bottom insulating part comprise three fastening parts that are formed one at least, and it is outstanding towards stator central authorities from the inboard of helical core, be used for stator is fastened to the fixation side of bucket, fastening part has one and constitutes the knuckle of a fastener hole, so that utilize a tightening member stator to be fastened to the fixation side of bucket; Be positioned at the fastening projection on the inner peripheral surface of fastener hole, be used to prevent that cylindrical sleeve from falling down from fastener hole.

In view of the above, the present invention can make stator can be fixedly mounted in fixation side, for example is installed on the bucket, also can reduce the required material and the weight of stator of the BLDC motor of making drum-type washing machine simultaneously, and can simplify manufacture process.

Especially, similar with the situation that adopts segment core, the present invention makes over a long time, and stator can be fixedly mounted in fixation side, for example be installed on bucket or the supporting shell, also can reduce the material of stator core and insulating part simultaneously, thus only be applicable to stator weight reach more than 1.5 kilograms and rotating speed at the BLDC of 0～2000 rev/min drum-type washing machine motor.

Drum-type washing machine of the present invention makes and can easily be mounted on the bucket at stator on the assembly line, and can more easily carry out maintenance work when making maintenance service.

In addition, the assembled state of the upper and lower insulating part of improvement has improved the rigidity of stator, has reduced noise and vibration thereupon, thereby has improved Mechanical Reliability and prolonged service life.

Simultaneously, cylinder is set in the fastener hole of upper and lower insulating part, and as lining, so just improved the installability of cylinder, so improved the rigidity of stator, reduced noise and vibration thereupon, improved reliability of products, and prolonged service life of product, thereby has important industrial applicibility.

Description of drawings

Fig. 1 schematically shows the longitudinal section of the drum-type washing machine of direct-coupled type of the prior art;

Fig. 2 is the perspective diagram of stator of the prior art;

Fig. 3 is the perspective diagram of the segment core among Fig. 2;

Fig. 4 is the external perspective view of stator according to one preferred embodiment of the present invention;

Fig. 5 is the part schematic exploded perspective view of Fig. 4;

Fig. 6 is the rear side perspective diagram of the part of the upper insulator among Fig. 5;

Fig. 7 is the floor map of the critical component among Fig. 4;

Fig. 8 and 9 is reference diagrams, the multiple application of expression insulating part;

Figure 10 is the floor map of the modification of the fastening part among Fig. 5.

The specific embodiment

With reference to Fig. 4 to Figure 10 embodiments of the invention are described below.

With reference to Fig. 4～6 the preferred embodiments of the present invention are described below.

Fig. 4 is the external perspective view of stator according to one preferred embodiment of the present invention, and Fig. 5 is the part schematic exploded perspective view of Fig. 4, and Fig. 6 is the rear side perspective diagram of the part of the upper insulator among Fig. 5.

As shown in the figure, the stator 6 of outer rotor-type motor comprises: an annular helical core HC, this helical core HC has by piling up the sandwich construction that steel plate forms, and the T shape portion 151 that has shape substrate 150 and give prominence to from substrate 150 begins to top layer coiling steel plate from bottom with helical simultaneously; The upper insulator 60a of one electrically insulating material is to be coated over the upside of helical core HC with the complementary mutually shape of the shape of helical core HC; The bottom insulating part 60b of one electrically insulating material, when assembling with upper insulator 60a, be coated over the downside of helical core 60b with shape with the shape complementarity of helical core HC, wherein, among upper insulator 60a and the bottom insulating part 60b each all comprises more than three or three and fastening part 600 its formation one, these fastening parts are outstanding towards the central authorities of stator 6 from the inboard of helical core HC, are used for stator 6 is fastened to the fixation side of bucket.

Fastening part 600 (see figure 5)s have a fastener hole 620a (see figure 5), are used for by tightening member stator 6 being fixed to fixation side, for example are fixed on the bucket.Fastener hole 620a is made to the knuckle 620 of coupling part 600 rear sides by prominent.

Upper and lower insulating part 60a, each knuckle 620 of 60b comprises a jut 621, this jut is outstanding towards opposed insulating part from the side in the face of another insulating part, so that in assembling, make upper and lower

insulating part

60a, 60b closely contacts, thereby improve upper and lower insulating part 60a, the assembled state of 60b.

Among upper insulator 60a and the bottom insulating part 60b each has a ribs 650 at the radially inner side on the surface of and contacted each upper insulator 60a of helical core HC and bottom insulating part 60b circumferential along it, is used to support inner surface unshakable in one's determination.

The fastening part 600 of each has at least one ribs 660 among upper insulator 60a and the bottom insulating part 60b, this ribs is connected between the knuckle 620 and ribs 650 of fastener hole 520a, the fastening force that is used for will concentrating on the knuckle 620 scatter, and strengthens the intensity of fastening part 600.

In addition, the fastening part 600 of each has among upper insulator 60a and the bottom insulating part 60b: a ribs 670, in its inner circumference and be connected between the fastening part; At least one connection rib 680 is connected ribs 670 and radially supports between the ribs 650 of inner surface unshakable in one's determination, so that a support force is provided.

Simultaneously, each all has

terminal

610a and 610b on the opposed sidewall that is positioned at each T shape portion 610 among upper insulator 60a and the bottom insulating part 60b, and these terminal shapes are complimentary to one another, can cooperatively interact so that form the surface that flushes when assembling.

Each

terminal

610a and 610b in each T shape portion 610 have

Shape is if opposite side has

Shape.

T shape portion 610 opposite end surfaces on the opposed side walls surface that is substantially perpendicular to upper insulator 60a and bottom insulating part 60b also have

terminal

610a and 610b, and these ends have shape complimentary to one another.

Among upper insulator 60a and the bottom insulating part 60b T shape portion 610 of each at one end portion have an abutment surface 611a, be used to support the boots 151a unshakable in one's determination of helical core HC.

Simultaneously, near the fastener hole 620a of the fastening part 600 of upper insulator 60a, have its shape and the locating hole of the fixation side of bucket or the locator protrusions 630 of groove (not shown) complementation.

In fastener hole 620a, has cylindrical sleeve 800; The rubber-like spring catch maybe can press fit over the hollow pin among the fastener hole 620a owing to the part through cutting, as a lining.

The substrate 150 of helical core HC has the groove that is used to reduce stress, so that make coiling unshakable in one's determination carry out easily, by the through hole in the substrate 150 being gone in rivet 153 rivetings and helical core HC being fixed together.

The coiling end of helical core HC is soldered on the predetermined portions of substrate 150 in the mode that contacts respectively with the coiling initial part.

With reference to Fig. 7, stator 6 of the present invention has fastening part 600, each fastening part and upper insulator 60a or form one from three of inner peripheral surface unshakable in one's determination or three radially outstanding bottom insulating part 60b in above position.Fastening part 600 is manufactured into and makes and to satisfy inequality a 〉=b, and wherein, " a " expression is from the length of each outstanding T shape portion 151 of the outer surface of helical core HC, the distance of the fastener hole central authorities of " b " expression from the inner surface of helical core to fastening part 600.

Simultaneously, with reference to Fig. 5, a Reference numeral of not explained 8 expressions are used to control the hole sensor assembly of motor, and Reference numeral 9 expression joint (tap) casing assemblies are used to open power so that stator side is arrived in power supply.

The various details working condition.

Different with segment core SC is, the so-called helical core HC of the present invention forms with helical coiling steel plate by the steel plate with T shape portion and substrate 150 is piled up simultaneously, and it allows to save the step of alignment and welding stack of lamination, thereby has simplified manufacture process.

In addition, different with segment core is that because helical core HC does not have projection, therefore, helical core HC can reduce the waste of material.

That is to say that the present invention makes the method for stator, not only simplify the waste of manufacture process but also minimizing material.

Jut 621 is from the face of each upper insulator and the bottom insulating part 60a of opposed insulating part towards opposed insulating part, the side of the knuckle 620 of 60b is outstanding, this just can be upper and lower

insulating part

60a, 60b is assembled into a kind of like this state, promptly, make a knuckle 620 sides be positioned at upper insulator 60a jut 621 be positioned at the jut 621 mutual butts of a knuckle 620 sides of bottom insulating part 60b, thereby improved assembled state.

That is to say, if there is not jut 621, so, at assembling upper and lower insulating part 60a, in the 60b process, originally, terminal 610a and 610b are in contact with one another, so that upper insulator and bottom insulating

part

60a, 60b is assembled into a kind of like this state, promptly, the knuckle 620 of the knuckle 620 of upper insulator 60a and bottom insulating part 60b is spaced from each other, and this is because at upper and lower insulating part 60a, mutual opposed terminal 610a and 610b on the neighboring of 60b, with upper and lower insulating part 60a, the cause of the difference in height between the counter surface of the knuckle 620 on the inner rim of 60b.

In view of the above, because upper and lower

insulating part

60a, 60b is assembled into such state, that is, and and upper and lower insulating part 60a, space between the knuckle 620 of 60b does not contact, if to the upper and lower insulating part 60a that fits together mutually, apply one on the 60b and impact for example vibration etc., this just has the upper and lower insulating part 60a of knuckle 620 easily, the 60b side produces distortion, for example produces crooked or reverses.

Therefore, jut 621 is set on the knuckle 620, at assembling upper and lower insulating part 60a, during 60b, make the closely contact mutually of opposed jut, thereby improved upper and lower insulating part 60a, the assembled state of the facing sides of 60b, to prevent upper and lower insulating part 60a, the distortion that 60b produces because of difference in height.

In addition, even originally be not provided with the projection that keeps fastening force when stator 6 being fastened to barrel side on one's body at iron core, by improving the structure of upper insulator 60a and bottom insulating part 60b, stator 6 still has enough rigidity and keeps bolted power.

That is to say, provide the structure that has identical effect with the projection of segment core SC by fastening part 600, thereby the stator 6 of applicable helical core HC can be provided for upper insulator 60a and bottom insulating part 60b.

In addition, vibration damping and damped vibration are carried out in the 640 pairs of vibrations that produced during CD-ROM drive motor in space between the rib 650,660,670 and 680 of fastening part 600 rear sides, so that improve the Mechanical Reliability of stator 6, and can save the material of insulating part.

Simultaneously, along circumferentially and the radially inner side on the surface of the upper surface of helical core HC or contacted each upper insulator 60a of lower surface and bottom insulating part 60b be provided with the ribs of upper insulator 60a and bottom insulating part 60b, be used to supporting the inner surface of helical core HC.

Be connected the knuckle 620 of fastener hole 620a of each fastening part 600 of upper insulator 60a and bottom insulating part 60b and the ribs between the ribs 650, the connection power that concentrates on the knuckle 620 disperseed, and strengthen the intensity of fastening part 600.

In view of the above, even in stator weight more than 1.5 kilograms, in the big capacity drum-type washing machine of velocity of rotation at 600～2000 rev/mins, when rotor 5 rotated, shakes and is out of shape, stator 6 can prevent effectively also that the fastening part of stator 6 from being caused by vibration and break.

Because near the locator protrusions 630 the fastener hole 620a of fastening part 600 is assemblied in the locating hole (not shown) of bucket 2, therefore, the fastening of stator 6 is easily.

Like this, locator protrusions makes can easily install stator 6 and bucket 2, and the attendant just can repair easily when serving after sale.

Certainly, locator protrusions 630 can be set on the bucket 2, and locating hole can be set in the fastening part 600.

Simultaneously, Fig. 8 and 9 is with reference to accompanying drawing, and the multiple application of expression insulating part can notice that wherein even the total height of helical core changes within the specific limits, upper insulator 60a and bottom insulating part 60b also can be suitable for.

That is to say, Fig. 8 represents to allow upper and lower part insulating part 60a as total height h1 unshakable in one's determination, the terminal 610a of 60b, situation during height that 610b accurately cooperates, Fig. 9 represents such a case, promptly when total height unshakable in one's determination greater than respective heights among Fig. 8, make the terminal 610a of upper insulator 60a and bottom insulating

part

60b, 610b (seeing the dotted portion in Fig. 5 and 6) can not accurately cooperate, but situation about keeping at a certain distance away.

Even total height h2 unshakable in one's determination is greater than allowing insulating part 60a up and down, the terminal 610a of 60b, the height that 610b can accurately cooperate, feasible 610a endways, has a space between the 610b, because still can obtain insulation to T shape unshakable in one's determination portion, insulating part 60a up and down, 60b also can be applicable to the situation among Fig. 9.

Like this, because regardless of the total height unshakable in one's determination in certain total height scope, the insulating part up and down of the separate type of this embodiment is applicable to this iron core, and insulating part can improve the processability on the assembly line about the separate type of this embodiment.

Figure 10 has expressed the floor map of the modification of the fastening part among Fig. 5, fastener hole in knuckle 620 has fastening projection 620b so that preventing that cylindrical sleeve 800 from dropping from connecting hole, this modification is identical with front embodiment at the inner peripheral surface of fastener hole.

That is to say, drop from fastener hole 620a, fastening projection 620b is set on the inner peripheral surface of fastener hole 620a in order to prevent cylindrical sleeve 800.

Preferably, circumferentially a plurality of fastening projection 620b are set along the inner peripheral surface of fastener hole 620a with predetermined distance.

The length that fastening projection had equals or is shorter than the degree of depth of the connecting hole 620a of knuckle 620.

Although preferably, fastening projection 620b has semicircular in shape section basically,, the shape of fastening projection 620b is not limited thereto, and also can adopt ellipse or other shape.

The working condition of this embodiment will be described below.

Basically this embodiment has identical working condition with the embodiment of front, and the feature of the working condition of this embodiment is as follows.

That is, upper and lower insulating part 60a applies a pressure on the outer peripheral face of the cylindrical sleeve 800 of the fastening projection 620b among the fastener hole 620a of 60b in being arranged on connecting hole 620a, thereby prevents that cylindrical sleeve 800 from dropping from fastener hole 620a.

In view of the above, it is firmly hard making the installation of cylindrical sleeve 800.

Not it will be apparent to those skilled in the art that breaking away from design of the present invention and scope and can make various variations and modification the present invention.Therefore, the present invention covers these variations and the modification in the scope that falls into claims and equivalent thereof.

Industrial applicibility

The present invention can reduce for the manufacture of the required material of the stator of drum-type washing machine BLDC motor and Weight, and can securely stator be installed to fixation side, for example be installed to a barrel side, thereby can carry High productive capacity also can save production cost.

Owing to can easily be installed to stator on the bucket on the assembly line, so the maintenance in the use procedure Also just be easy to.

In addition, the assembled state of the upper and lower insulating part of improvement has improved the rigidity of stator, thereupon Reduced noise and vibration, thereby improved Mechanical Reliability and prolonged service life.

Simultaneously, cylindrical sleeve is positioned in the fastener hole of upper and lower insulating part and as lining, The installability of the cylindrical sleeve that improves has improved the rigidity of stator, has reduced noise and vibration thereupon, Improve the Mechanical Reliability of product, and prolonged the service life of product, therefore had the industry of height Practicality.

Claims

1. stator that is used for the outer rotor-type motor of drum-type washing machine comprises:

The annular helical core of one sandwich construction has banded substrate and begins to form with spirally this steel plate of reeling to top layer from bottom simultaneously from the steel plate of the outstanding T shape portion of this substrate by piling up;

The upper insulator of one electrically insulating material is coated over the upside of annular helical core with the shape with the shape complementarity of annular helical core; And

The bottom insulating part of one electrically insulating material when assembling with upper insulator, is coated over the downside of annular helical core with the shape with the shape complementarity of annular helical core;

Wherein, each upper insulator and bottom insulating part comprise the fastening part that is formed one, and be outstanding towards stator central authorities from the inner peripheral of annular helical core, is used for stator is fastened to the fixation side of bucket,

Fastening part has the knuckle that constitutes fastener hole, so as to utilize tightening member with stator be fastened to bucket fixation side and

Each knuckle of upper and lower insulating part comprises a jut, this jut is outstanding towards opposed this another insulating part from the side in the face of another insulating part, so that the upper and lower insulating part is closely contacted, thereby improve the assembled state of upper and lower insulating part.

2. stator according to claim 1, wherein, in upper insulator and the bottom insulating part each has a ribs at the radially inner side on a surface of and contacted each upper insulator of annular helical core and bottom insulating part circumferential along it, is used to support inner surface unshakable in one's determination.

3. stator according to claim 2, wherein, the fastening part of each upper insulator and bottom insulating part comprises at least one ribs, is connected between the knuckle and ribs that constitutes fastener hole, be used to disperse to concentrate on the connection power on the knuckle, and strengthen the intensity of fastening part.

4. stator according to claim 1, wherein, each upper insulator and bottom insulating part also comprise the shape end complimentary to one another on the opposed side walls that is positioned at its each T shape portion, form a flush surfaces so that can allocate into when assembling.

5. stator according to claim 1, wherein, each upper insulator and bottom insulating part also comprise one from the outstanding abutment surface in the outside of each opposed end wall of its T shape portion, are used to support the boots unshakable in one's determination of annular helical core.

6. stator according to claim 1, wherein, the fastening part of upper insulator comprises that one is positioned near the locator protrusions of fastener hole, its shape and the locating hole of the fixation side of bucket or the shape complementarity of groove.

7. stator according to claim 1 wherein, also comprises a cylindrical sleeve that is positioned in the fastener hole.

8. stator according to claim 7, wherein, cylindrical sleeve is a rubber-like spring catch, spring catch is owing to being cut of length direction along its outer peripheral face partly has elasticity.

9. stator according to claim 7, wherein, cylindrical sleeve is one not have the hollow pin of cutting part, so that be press-fitted in the fastener hole.

10. stator according to claim 1, wherein, the substrate of annular helical core has notch, the stress when being used to reduce wound core.

11. stator according to claim 1 wherein, utilizes by riveting and goes into rivet in the through hole in the substrate, and annular helical core is fixed together.

12. stator according to claim 1, wherein, annular helical core comprises a coiling start-up portion and a coiling latter end, is soldered to respectively on the predetermined portions of substrate and with this predetermined portions of this substrate to contact.

13. stator according to claim 1, wherein, fastening part is manufactured into and can satisfies inequality a 〉=b, wherein, " a " expression is from the length of each outstanding T shape portion of the outer surface of annular helical core, the distance of the fastener hole central authorities of " b " expression from the inner surface of annular helical core to fastening part.

14. a stator that is used for the outer rotor-type motor of drum-type washing machine comprises:

Wherein, each upper insulator and bottom insulating part comprise at least three fastening parts that are formed one, outstanding from the inner peripheral of annular helical core towards stator central authorities, be used for stator is fastened to the fixation side of bucket, fastening part has the knuckle of a formation fastener hole, so that utilize tightening member with stator be fastened to the bucket fixation side and

Be positioned at the fastening projection on the inner peripheral surface of fastener hole, be used to prevent that cylindrical sleeve from dropping from fastener hole.

15. stator according to claim 14 wherein, circumferentially is provided with a plurality of described fastening projections with the predetermined distance edge on the inner peripheral surface of fastener hole.

16. stator according to claim 14, wherein, fastening projection is hemispherical basically.

17. stator according to claim 14, wherein, in upper insulator and the bottom insulating part each has a ribs at the radially inner side on a surface of and contacted each upper insulator of annular helical core and bottom insulating part circumferential along it, is used to support inner surface unshakable in one's determination.

18. stator according to claim 17, wherein, each upper insulator and bottom insulating part comprise at least one ribs, are connected between the knuckle and ribs that constitutes fastener hole, be used for the connection power that concentrates on the knuckle is disperseed, and strengthen the intensity of fastening part.

19. stator according to claim 14, wherein, each upper insulator and bottom insulating part also comprise the shape end complimentary to one another on the opposed side walls that is positioned at its each T shape portion, form a flush surfaces so that can allocate into when assembling.

20. stator according to claim 14, wherein, each upper insulator and bottom insulating part also comprise one from the outstanding abutment surface in the outside of each opposed end wall of its T shape portion, are used to support the boots unshakable in one's determination of annular helical core.

21. stator according to claim 14, wherein, the fastening part of upper insulator comprises that one is positioned near the locator protrusions of fastener hole, its shape and the locating hole of bucket fixation side or the shape complementarity of groove.

22. stator according to claim 14, wherein, cylindrical sleeve is a rubber-like spring catch, and spring catch is owing to being cut of length direction along its outer peripheral face partly has elasticity.

23. stator according to claim 14, wherein, cylindrical sleeve is one not have the hollow pin of cutting part, so that be press-fitted in the fastener hole.

24. stator according to claim 14, wherein, the substrate of annular helical core has notch, the stress when being used to reduce wound core.

25. stator according to claim 14 wherein, utilizes by riveting and goes into rivet in the through hole in the substrate, and annular helical core is fixed together.

26. stator according to claim 14, wherein, annular helical core comprises a coiling start-up portion and a coiling latter end, is soldered on the predetermined portions of substrate respectively and is in contact with it.

27. stator according to claim 14, wherein, fastening part is manufactured into and can satisfies inequality a 〉=b, wherein, " a " expression is from the length of each outstanding T shape portion of the outer surface of annular helical core, the distance of the fastener hole central authorities of " b " expression from the inner surface of annular helical core to fastening part.

28. stator according to claim 14, wherein,

29. stator according to claim 28 wherein, circumferentially is provided with a plurality of fastening projections with the predetermined distance edge on the inner peripheral surface of fastener hole.

30. stator according to claim 29, wherein, fastening projection is semicircular in shape basically.

31. stator according to claim 30, wherein, fastening projection had along the length of the axis direction of the knuckle degree of depth less than the fastener hole in knuckle.