CN101090224A

CN101090224A - Motor for washer and roller type washer

Info

Publication number: CN101090224A
Application number: CNA200710107702XA
Authority: CN
Inventors: 桧胁英治; 松尾繁
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2006-06-14
Filing date: 2007-04-27
Publication date: 2007-12-19
Also published as: JP2007330417A; CN201078832Y; KR20070119534A; TWI345011B; TW200813283A

Abstract

The invention provides a motor for washer and drum-type washing machine, in the rotaty motor of the drum-type washing machine, the motor is made large-torque and minitype, and through minimal production device and a great variety of torque specification required by switching corresponding device of production device, the cost is reduced. In motor of rotary roller (2) drived by connecting with the rotation axis(4) which can freely revolve and pivot, an outboard rotor (5a) and inboard rotor (5b) are respectively set on the outboard of the stator (6) and the inboard. Based on the required torque of the motor, any one or two of the outboard rotor (5a) and inboard rotor (5b) is used to correpond with multi device of different torque specification.

Description

The motor and the drum type washing machine that are used for washing machine

Technical field

The present invention relates to the rotating shaft level or be supported in the bucket obliquely, utilize that the motor driven rotary drum rotating is washed, the drum type washing machine of rinsing, each process of dewatering, perhaps relate to wash, the drum-type washing drying machine of rinsing, dehydration, dry each process, and employed motor.

Background technology

In the past, in this drum type washing machine, structure as the motor that drives rotary drum rotating has following mode, will be in washing process can positive and negative rotation the 1st motor, be fixed on the bucket outer bottom with these two motor of the 2nd motor that carry out dehydration, rotation is passed to the type of drive (for example, with reference to patent documentation 1) of swing roller by the V-type band; The rotation that makes the motor that is installed in the bucket back side directly and the type of drive (for example, with reference to patent documentation 2) of the rotating shaft interlock of swing roller; The motor utilization that is installed in the bucket back side is provided with inboard (inside) rotor type motor of rotor (revolving part) week or is provided with rotor (revolving part) in stator (fixture) periphery in stator (fixture) the outside (outside) rotor type motor (for example, with reference to patent documentation 3) etc., drive the mode of swing roller etc.

Fig. 5 is the constructed profile of above-mentioned drum type washing machine in the past when using inboard rotor formula motor, and Fig. 6 is in the past the drum type washing machine constructed profile when using outside rotors formula motor.

As shown in Figure 5, its expression inboard rotor formula motor, swing roller 2 rotations are supported on the inside of bucket 3 freely, at the back side of bucket 3 is that motor 20 is installed on the outer bottom 3b, the rotor of described motor 20 (revolving part) 5 is located at interior all sides of stator (fixture) 6, in Fig. 6, represented that rotor 5 is located at the outside rotors formula motor of the outer circumferential side of stator (fixture) 6.

Herein, motor 20 needed torques change according to the specification of drum type washing machine, because the capacity of swing roller 2 increases and makes increase such as water consumption, the torque that necessary increasing motor requires, but in order to improve the torque of motor 20, generally by setting the thickness (being stacked thickness) and the external diameter of described rotor 5 and stator 6 a little greatly next corresponding.

Patent documentation 1 Japanese kokai publication hei 10-263271 communique

Patent documentation 2 TOHKEMY 2006-43105 communiques

Patent documentation 3 TOHKEMY 2004-216166 communiques

But, in aforementioned structure in the past, utilize two electric motor driven modes to need its configuration space, equipment integral maximizes on short transverse especially, and is the structure that is unfavorable for that cost reduces.

And, with motor mounting in the mode at the bucket back side, when the type of expansion washing machine, under the situation of the capacity that increases swing roller, this moment is when the increasing motor torque, if the thickness (stacked thickness) of motor or external diameter are increased to improve torque, then there are the external diameter of motor or the problem that thickness (stacked thickness) size becomes greatly and the use amount increase of material causes cost to improve.

Particularly when increasing external diameter, interior all sides of interior all sides of the rotor in Fig. 5 (revolving part) 5 and the stator (fixture) 6 among Fig. 6 produce the dead space (deadspace) 12 that is helpless to motor characteristic respectively and cause maximizing.

And, at the different swing roller of capacity, in order to optimize the use amount of motor torque, material, when changing motor external diameter or thickness (stacked thickness), need therefore exist equipment to switch the problem that isoproductivity worsens corresponding to the production equipment of various motor specifications.

Summary of the invention

The present invention carries out in order to address the above problem, its purpose is, a kind of drum type washing machine cheaply is provided, becomes big torque and compact motor, realize the raising of the shared and productivity ratio of production equipment by the motor drive mechanism that will be installed on the bucket back side.

In order to solve aforementioned problem in the past, drum type washing machine of the present invention constitutes, and can have outside rotors and inboard rotor respectively in outer circumferential side and interior all sides of the stator (fixture) of the motor that is disposed at the bucket back side.

Thus, even can provide the size of wanting the increasing motor torque also not need increasing motor, big torque and compact drum type washing machine, and can realize following structure, promptly, only by situation that select to use outside rotors and inboard rotor and the situation of only using any, can be corresponding to the increase and decrease of needed motor torque.

Drum type washing machine of the present invention, can be the space of interior all sides space of the described stator of the torque that is helpless to described motor generation as the configuration inboard rotor, therefore the increase of motor periphery or axial dimension can be suppressed at Min., and can realize big torque, and can realize the sharing of motor production equipment that can be corresponding with the increase and decrease of needed motor torque.

First aspect present invention provides a kind of motor that is used for washing machine, and described motor has: stator; Be provided in the outer circumferential side of stator of described motor and the outside rotors space and the inboard rotor space of interior all sides respectively; And be arranged on the outside rotors in outside rotors space and be arranged in the inboard rotor in the inboard rotor space at least one.

According to first aspect present invention, the rotor of described motor can be made of the outer circumferential side of the stator that is provided in described motor respectively and the outside rotors and the inboard rotor of interior all sides, wherein in the space of the outer circumferential side of the stator of described motor and interior all sides respectively as outside rotors space and inboard rotor space, thus can be the space of interior all sides space of the described stator that is helpless to described motor generation torque as the configuration inboard rotor, therefore the increase of motor periphery or axial dimension can be suppressed at Min., and formation cramped construction, and torqueization greatly.

Second aspect present invention is on the basis of first aspect, and described stator is provided for being installed in installation unit on the bucket back side integratedly in its bucket side.

Third aspect present invention is on the basis of second aspect, and described installation unit is formed on the described stator by mould process.

According to the present invention second and the third aspect, by being used for the installation unit that described stator is installed on the described bucket back side is located at described moulded parts, thereby can assemble easily.

Fourth aspect present invention is on the basis aspect first or two, and described stator forms with having the material mould process of insulating properties.

Fifth aspect present invention provides a kind of drum type washing machine, and described drum type washing machine possesses: swing roller, this swing roller is used to take in washings, and in the horizontal direction or incline direction have axis of rotation; Bucket, this bucket include described swing roller and flexibly are supported in the body of the washing machine; And motor, this motor mounting is at the described bucket back side, and drives described swing roller by a rotating shaft; Described motor has: stator; Be provided in the outer circumferential side of stator of described motor and the outside rotors space and the inboard rotor space of interior all sides respectively; And be arranged on the outside rotors in outside rotors space and be arranged in the inboard rotor in the inboard rotor space at least one.

According to fifth aspect present invention, the rotor of described motor can be made of the outer circumferential side of the stator that is provided in described motor respectively and the outside rotors and the inboard rotor of interior all sides, wherein be used separately as outside rotors space and inboard rotor space at the outer circumferential side of the stator of described motor and the space of interior all sides, thus can be the space of interior all sides space of the described stator that is helpless to described motor generation torque as the configuration inboard rotor, therefore the increase of motor periphery or axial dimension can be suppressed at Min., and formation cramped construction, and torqueization greatly.

Sixth aspect present invention is on the basis aspect the 5th, the stator utilization has the material mould process of insulating properties and forms, described stator is provided for described stator is installed in installation unit on the bucket back side in its bucket side integratedly, thus described stator is fixed on the back side of described bucket.

According to sixth aspect present invention,, therefore can assemble easily by being used for the installation unit that described stator is installed on the described bucket back side is located at described moulded parts.

Seventh aspect present invention is on the basis aspect the 5th or six, the stator of motor forms common component, the rotor of motor constitutes the amount of capacity according to swing roller, only uses inboard rotor or only uses outside rotors or use inboard rotor and outside rotors.

According to seventh aspect present invention, because the stator of motor forms common component, the rotor of motor constitutes the amount of capacity according to swing roller, only use inboard rotor, or only use outside rotors, or use inboard rotor and outside rotors, though stator has only a kind of, but can constitute following three kinds of motor, promptly, under the situation of described inboard rotor of assembling and described outside rotors, constitute the motor that produces big torque, under the situation of only assembling described outside rotors, constitute the motor of torque in producing, under the situation of only assembling described inboard rotor, constitute the motor that produces little torque, thereby can switch increase and decrease by minimal production equipment and equipment, can realize cutting down the production equipment expense and boost productivity corresponding to needed motor torque.

Description of drawings

Fig. 1 is the constructed profile of the drum type washing machine of embodiments of the present invention 1.

Fig. 2 is the major part profile of the motor of this drum type washing machine.

Fig. 3 is the constructed profile of drum type washing machine when adopting the motor that only uses outside rotors of embodiments of the present invention 2.

Fig. 4 is the constructed profile of this drum type washing machine when adopting the motor that only uses inboard rotor.

Fig. 5 is in the past the drum type washing machine constructed profile when using inboard rotor formula motor.

Fig. 6 is in the past the drum type washing machine constructed profile when using outside rotors formula motor.

Symbol description

1 body of the washing machine; 2 swing rollers; 3 buckets; 4 rotating shafts; 5 rotors; The 5a outside rotors; 5a ' outside rotors space; The 5b inboard rotor; 5b ' inboard rotor space; 6 stators; The 6a installation unit; 21 motor.

Embodiment

(execution mode 1)

Fig. 1 represents the constructed profile of the drum type washing machine of the 1st execution mode of the present invention, and Fig. 2 is the major part profile of the motor of this drum type washing machine.

In Fig. 1, describe giving same numeral with the Fig. 5 of example in the past or identical structure shown in Figure 6.

In Fig. 1, drum type washing machine main body 1 is built-in with bucket 3 and rotates the swing roller 2 that is provided in freely in this bucket 3, pivot at swing roller 2 is provided with rotating shaft 4 along the direction that roughly tilts, making the axis direction of swing roller 2 downward-sloping towards rear side from face side, is that motor 21 is installed on the outer bottom 3b at the back side of bucket 3.

The stator 6 of described motor 21 is fixed on the bottom surface of bucket 3 by installation unit 6a.

And, rotating shaft 4 pivots freely by bearing (not shown) rotation and is supported on the bottom surface of bucket 3, the outside of motor (outside) rotor 5a is connected with rotating shaft 4 with inboard (inside) rotor 5b that (space that is used to outside rotors 5a is installed of outer circumferential side that wherein, is positioned at the stator of described motor is called outside rotors space 5a ' (see figure 4); The space that is used to inboard rotor 5b is installed of all sides that is positioned at the stator of described motor is called inboard rotor space 5b ' (see figure 3)), utilize control unit (not shown) that the outside (outside) rotor 5a and inboard (inside) rotor 5b are rotated, drive thus swing roller 2 just change, reverse directions rotates.

Internal face at swing roller 2 is provided with a plurality of lobe plates 7 that clothing stirs usefulness.

Utilize lid 9 to open and close the peristome 3a that covers the face that is inclined upwardly of being located at bucket 3 face side freely,, washings can be taken out in swing roller 2 or puts into by washings gateway 8 by opening this lid 9.Owing to lid 9 is located on the face of being inclined upwardly, so needn't bend over just can take out and put into washings.

Bucket 3 utilizes spring body (not shown) can joltily be suspended on the body of the washing machine 1, supplies with water by the water route 11 of giving of being located at bucket 3 tops in bucket 3, by the drainage path 10 of being located at the bottom washings is discharged.

And, in the present embodiment, along incline direction roughly rotating shaft 4 is set at the pivot of swing roller 2, and be adapted to from face side the axis direction of swing roller 2 downward-sloping towards rear side, but also can along general horizontal direction rotating shaft 4 be set, and the axis direction of swing roller 2 is provided in general horizontal direction at the pivot of swing roller 2.

Below, according to the concrete structure of the major part profile of motor shown in Figure 2 explanation motor.

Stator (fixture) 24 is made of the stator core 25 of stacked electromagnetic steel plate etc. and the stator winding 26 that is wound in the described stator core 25 across insulant (not shown), and molded and shaped in the mode of imbedding in the stator resin moulded parts (mold) 23 such as thermosetting resin with electrical insulating property.Described stator winding 26 is three phase windings, is generally star-star connection or triangle wiring.

Described stator resin moulded parts 23 closely is fixed on the back side of bucket 3 for the installed surface 22 that utilizes left side among Fig. 2, and forms the stator installation foot 28 with installing hole 27.Can utilize described stator resin moulded parts 23 to constitute at installation unit 6a illustrated in fig. 1.

Rotor (revolving part) 29 utilizes rotor resin moulded parts 36 maintenance inner rotator frame 31 and the external rotor framves 35 that formed by thermosetting resin etc., described inner rotator frame 31 is corresponding to the medial surface of described stator core 25, adorned the inner rotator iron core 32 of inner rotator magnet 30 in having, described external rotor frame 35 is corresponding to the lateral surface of stator core 25, adorned the external rotor iron core 34 of external rotor magnet 33 in having, in the rotating center section of described rotor resin moulded parts 36, be equipped with axle sleeve (boss) 37 is installed.

In addition, in Fig. 2, show and be contained in the rotor that is contained in the IPM structure in the external rotor iron core 34 in the inner rotator iron core 32 or in the external rotor magnet 33 in the inner rotator magnet 30, but also can use the rotor that inner rotator magnet 30 is fixed on the periphery or the SPM structure in the interior week that external rotor magnet 33 is fixed on external rotor iron core 34 of inner rotator iron core 32.And, can also not have any or both in inner rotator frame 31 or the external rotor frame 35, and utilize rotor resin moulded parts 36 molded inner rotator magnet 30, inner rotator iron core 32, external rotor magnet 33 and external rotor iron core 34.

By means of by to the described stator winding 26 logical rotating magnetic fields that go up three-phase alternating current and on stator 24, produce, on inner rotator unshakable in one's determination 32 and external rotor iron core 34, produce revolving force.

In the structure shown in Figure 2 of present embodiment, with inner rotator frame 31 and external rotor frame 35 is one with rotor resin moulded parts 36 mould process simultaneously, but described inner rotator frame 31 and external rotor frame 35 also can constitute in split, therefore when can not have inner rotator frame 31 respectively and the mould process when not having external rotor frame 35, this can expand to the execution mode 2 of following narration.

Axle sleeve 37 is installed is fixed on the rotating shaft 4 among Fig. 1, be used to make swing roller 2 rotations.

According to above such structure,, can maximally utilise the space that to use as motor by setting external rotor and inner rotator.Its result, the torque that the per unit space produces increases, and therefore can improve motor torque or make motor miniaturization, thereby the capacity that can realize drum type washing machine increases, miniaturization.

And,,,, stator can be installed simple and reliablely so do not need to install the special-purpose member of usefulness owing on the part of resin moulded parts, constitute installation foot or installing hole integratedly with insulating properties for the installation of motor on the bucket back side.

(execution mode 2)

Fig. 3 is the constructed profile of drum type washing machine of the outside (outside) rotor type motor of expression the 2nd execution mode of the present invention.Situation when Fig. 4 represents that this drum type washing machine uses inboard (inside) rotor type motor.In addition, other inscapes are identical with Fig. 1 and Fig. 2, so omit the explanation of same structure.

Among Fig. 3, outside rotors 5a only has been installed, in the 5b ' of inboard rotor space, inboard rotor 5b has not been installed; In Fig. 4, inboard rotor 5b only has been installed, in the rotor space 5a ' of the outside, outside rotors 5a is not installed.

The torque that the motor that only is made of outside rotors 5a shown in Figure 3 is produced is made as To, and the torque that the motor that only is made of inboard rotor 5b shown in Figure 4 is produced is made as Ti.When stator 6 was same size, the internal diameter of outside rotors 5a was greater than the external diameter of inboard rotor 5b, so the only torque that produces greater than the motor that only is made of inboard rotor 5b of the torque that produces of the motor that is made of outside rotors 5a, i.e. a To＞Ti.

Herein, for the torque that the motor of the outside in the pie graph 1, inboard two rotors produces, each torque sum shows as the torque T that motor produces, so T=To+Ti.

According to the above, torque concerns that T＞To＞Ti sets up, and by from structure loading and unloading outside rotors 5a shown in Figure 1 or inboard rotor 5b, can expand to Fig. 3 of execution mode 2, structure shown in Figure 4, can make the corresponding three kinds of specifications of motor torque with stator 6 as common component thus.

According to above such structure, only, can constitute Fig. 3 of execution mode 2, motor shown in Figure 4 by unload any outside rotors 5a or the inboard rotor 5b from structure shown in Figure 1.

This as motor torque, can utilize same stator 6 and load and unload outside rotors 5a or the next corresponding three kinds of specifications of inboard rotor 5b in the drum type washing machine different with making the different torque that makes motor need of water consumption equal difference owing to the capacity of swing roller 2.

In addition, the stacked thickness of outside rotors 5a among Fig. 3, Fig. 4 and inboard rotor 5b may not be necessarily identical, as long as suitably select the internal diameter of outside rotors 5a and internal diameter and the stacked thickness of stacked thickness and inboard rotor 5b, get final product so that meet needed three kinds of motor torque specifications.

As mentioned above, if use motor of the present invention, because stator 6 is shared, can not produce because of carrying out the productivity ratio reduction that the equipment switching causes so production equipment is single, about rotor, its difference only is whether assemble outside rotors and inboard rotor, therefore can make the change of production method, production equipment reach Min. in the mode that changes or omit the part of assembly process, thereby do not spend the expense of production equipment, productivity ratio improves.Thus, can provide drum type washing machine cheaply.

As mentioned above, the drum type washing machine that the present invention relates to, owing to can be used for rotor to the dead space that is helpless to torque in the motor in the past, so can realize the raising and the miniaturization of motor torque, and, the sharing of production equipment of motor and the raising of productivity ratio be can realize, cost degradation and the high capacity and the miniaturization of equipment therefore can be realized.

Claims

1, a kind of motor that is used for washing machine, described motor has:

Stator;

Be provided in the outer circumferential side of stator of described motor and the outside rotors space and the inboard rotor space of interior all sides respectively; And

Be arranged on the outside rotors in outside rotors space and be arranged in the inboard rotor in the inboard rotor space at least one.

2, the motor that is used for washing machine according to claim 1 is characterized in that, described stator is provided for being installed in installation unit on the bucket back side integratedly in its bucket side.

3, the motor that is used for washing machine according to claim 2 is characterized in that, described installation unit is formed on the described stator by mould process.

4, the motor that is used for washing machine according to claim 1 and 2 is characterized in that, described stator forms with having the material mould process of insulating properties.

5, a kind of drum type washing machine, described drum type washing machine possesses:

Swing roller, this swing roller is used to take in washings, and in the horizontal direction or incline direction have axis of rotation;

Bucket, this bucket include described swing roller and flexibly are supported in the body of the washing machine; And

Motor, this motor mounting be at the described bucket back side, and drive described swing roller by a rotating shaft;

Described motor has:

Stator;

6. drum type washing machine according to claim 5, it is characterized in that, the stator utilization has the material mould process of insulating properties and forms, described stator is provided for described stator is installed in installation unit on the bucket back side in its bucket side integratedly, thus described stator is fixed on the back side of described bucket.

7. according to claim 5 or 6 described drum type washing machines, it is characterized in that, the stator of motor forms common component, the rotor of motor constitutes the amount of capacity according to swing roller, only uses inboard rotor or only uses outside rotors or use inboard rotor and outside rotors.