CN1542199A

CN1542199A - Stirring wing of washing machine

Info

Publication number: CN1542199A
Application number: CNA200410038615XA
Authority: CN
Inventors: ��һ; 足立一利; 小林光彦; 臼井重雄; 沟口祐子
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2003-04-28
Filing date: 2004-04-28
Publication date: 2004-11-03
Anticipated expiration: 2024-04-28
Also published as: TW200422468A; MY142571A; SA04250064B1; KR20040093389A; CN2714593Y; JP2004321629A; HK1067895A1; TWI241370B; KR100622158B1; JP4012114B2; CN1289736C; SG125949A1

Abstract

The agitation blade 1 is constituted so that an outer peripheral blade 2 having the largest area, for which large outer peripheral vanes 22 are formed at the outer peripheral part of a disk, and a center blade 4 for which center vanes 24 are formed on a semispherical surface at a rotation center part are integrally formed, and an intermediate blade 3 where intermediate vanes 23 are formed is freely rotatably fitted inside a recessed part formed between the center blade 4 and the outer peripheral blade 2. When the outer peripheral blade 2 and the center blade 4 are rotationally driven by a rotary shaft connected to the lower part of the center blade 4, since the intermediate blade 3 is rotated following the rotation, the complicated streams are generated, frictions of clothes with each other, twists and vertical movement of the objects to be washed are caused and they are effectively washed.

Description

The washing machine agitator

Technical field

The present invention relates to be configured in the washtub inner bottom part, stir the washing machine agitator of washings and water by rotation.

Background technology

In the eddy current type washing machines such as full rotation type washing machine of two barrel washing machines that washtub and dehydration barrel branch are arranged and washtub double as dehydration barrel, the inner bottom part of washtub is provided with the agitator that is driven in rotation by motor, generate eddy current in the washtub by being rotated in of agitator and stir current, washings is stirred with water, thereby forms washing and rinsing action.

Require agitator to have and well clean effect, washings does not take place to twine or damage simultaneously, to its discoidal base shape and thereon the mountain shaped protrusions of the radiation direction of formation carried out concentrated research.For example, known have a following washing machine agitator, promptly, on the base of the washing machine agitator that is formed with the curve form that descends, then rises laterally from the hemispherical portion that is arranged at circular central part, a plurality of differing heights are different with the radiation direction with the mountain shaped protrusions of width, the effect of rotating thereby the fore-end that alleviates mountain shaped protrusions tangles washings, suppress inhomogeneous, the twisting and the winding of washing, improved washing (-)off properties (with reference to patent documentation 1).

Patent documentation 1: special fair 2-54113 communique (the 2nd～3 page, Fig. 3)

The clean effect of washings be the current that produce of agitator rotation effect be arranged on the product that mountain shaped protrusions on the agitator directly drives the effect of washings motion.In the structure of the agitator of above-mentioned prior art, after agitator begins rotation, the water that hemispherical portion from central division enters flows along curved surface, rise in the outside, the inwall of one edge washtub rises and forms big circular arc current on one side, still, only depends on the base of formation agitator and the shape of mountain shaped protrusions etc., the stirring current that produce in the washtub are simple, and are limited to the stirring capacity of washings.

Summary of the invention

The purpose of this invention is to provide a kind of washing machine agitator,, form complicated current, thereby improve stirring capacity by a plurality of rotation wings are combined into one.

In order to achieve the above object, washing machine agitator of the present invention is set at the top opening, accommodate the inner bottom part of the washtub of washings and water, utilize rotary drive mechanism and be driven in rotation, it is characterized in that having: deciding to form in the radius from pivot to the outside, be formed with the center wing of a plurality of center vane that project upwards, deciding to form in the radius to inboard from excircle, be formed with the periphery wing of a plurality of periphery blades that project upwards, and be rotated intercalation freely between the center wing and the periphery wing, be formed with the middle wing of a plurality of intermediate blades that project upwards.

According to said structure, because the middle wing by intercalation between the center wing and the periphery wing, after the center wing and the periphery wing are driven in rotation, the middle wing generates the rotation than the rotation hysteresis of the center wing and the periphery wing, produces the current based on the middle wing of superposition on the current of the center wing and the generation of the periphery wing, and they interact and form the current of complexity, make washings produce compound movement, increase the friction of cloth, increase mixing power, thereby can improve clean ability.

In said structure, the diameter of the periphery wing, the middle wing and the center wing is, the diameter of the middle wing be in the middle of the diameter about 1/2, the center wing of the periphery wing is the wing about 1/2.Thus, have the larger area periphery wing and form big current on direction of rotation, the current of the center wing wing one-tenth in the middle of the weep that central part forms makes change, and become complicated current, make that the washings of accommodating in the washtub is evenly stirred.

And the center wing and the periphery wing are integrally formed, and incorporate structure can proof strength, and the center wing also is set between them easily.

And the wing one-tenth in center is the hemispherical of top with the pivot, thereby produces to the peripheral direction flowing water flow, and the current of wing one-tenth become complicated current in the middle of acting on, and improves the mixing effect to washings.

And, the middle wing is by forming the inclination curved surface that outside circumferencial direction rises, and produce along the vertical direction flowing water flow, these current along inclined direction flow under by the effect of the current of the wing one-tenth in center, thereby washings is applied complicated mixing power, increase the power of friction and direction of lay, thereby can improve cleaning strength.

And, because the curved surface that the wing one-tenth of periphery is the top with the inner circumferential side to fall to the substantial middle subordinate of radial direction, rise to excircle, washings drops on the periphery wing easily, helps washings is implemented effectively to stir, and also is easy to generate simultaneously the current of direction of rotation.

And, because the extreme higher position of intermediate blade forms the middle wing than the lowland, extreme higher position of center vane and periphery blade, thereby the washings that the wing is positioned between the periphery wing and the center wing in the middle of can preventing tangles, and rotate with the center wing and the periphery wing, suppressed the middle wing and damaged because of being subjected to big stress effect.

And, when the integrally formed center wing and the periphery wing, the wing is accommodated recess in the middle of forming simultaneously, with the slide unit of the rotation of the wing in the middle of supporting fixing therein after, the middle wing be fixed on the middle wing that is formed between the center wing and the periphery wing and accommodate the interior slide unit of recess and cooperate, and rotatably be supported in the sliding support portion of slide unit the desirable rotation status of the wing in the middle of can obtaining thus.

Be supported on the middle wing on the slide unit, constitute by a pair of donut of being separated by with slight gap with the two sides of sliding support portion and the slide protrusion of sliding-contact on sliding support portion, thus, in sliding support portion, form shipwreck in the air trap of invading, sand etc. are difficult to enter on the sliding surface with water, reach the effect that prevents the foreign matter intrusion and harm middle wing rotation.

And by forming opening on the bottom surface of accommodating recess at the middle wing, the foreign matters such as sand that the wing is accommodated in the recess in the middle of entering are discharged from from peristome, hinder the rotation of the middle wing so can prevent foreign matter.

And, by forming step on the side circumference of accommodating recess at the middle wing, can prevent foreign matter such as coin from the gap between the middle wing and the center wing or the gap between the middle wing and the periphery wing invade in the middle of the wing accommodate in the recess.

Description of drawings

Fig. 1 is the section of structure that the washing machine of the agitator in the embodiment is used in expression.

Fig. 2 is the plane that the expression agitator constitutes.

Fig. 3 is the A-A alignment pseudosection of above-mentioned agitator.

Fig. 4 represents to constitute the structure of the driving body of agitator, is that plane, (b) are B-B alignment pseudosections (a).

Fig. 5 represents the structure of slide unit, (a) is that plane, (b) are C-C alignment pseudosections.

The structure of the wing was that plane, (b) are D-D alignment pseudosections (a) in the middle of Fig. 6 represented.

Among the figure: 1-agitator, the wing in the middle of the 2-periphery wing, 3-, 3a-is in conjunction with hook portion, the concentric ring portion of 3b, 3c-, 3d-slide protrusion, the 4-center wing, the 5-slide unit, 5a-supports ring portion, 5b-is in conjunction with ring portion, and the wing is accommodated recess in the middle of the 7-, bucket (washtub) in the 13-, the 14-motor, 22-periphery blade, 23-intermediate blade, the 24-center vane, projection between the 25-blade.

The specific embodiment

Below, with reference to the description of drawings embodiments of the present invention, help the understanding of the present invention.And present embodiment is a specific example of the present invention, and does not limit technical scope of the present invention.

Fig. 1 illustrates the structure of the washing machine of the agitator 1 that has used present embodiment, and the expression conduct is from washing to a configuration example of the full-automatic automatic washing machine of implementing that dewaters.The outer bucket 12 of configuration is by a plurality of suspension 11 resiliency supported in the housing 10, and the vibration during dehydration can be absorbed by suspension 11.Be equipped with interior barrel of (washtub) 13 of agitator 1 bottom being provided with in the bucket 12 outside this, be installed in the rotation of the motor 14 of outer bucket 12 bottoms by utilizing clutch 15 switchings, agitator 1 reaches interior barrel 3 and is driven in rotation separately respectively.In addition, omitted the structure of feedwater and draining in the diagram.

Open the lid 16 that is arranged on above the housing 10, washings and washing agent are dropped in the interior bucket 13 and after the entry into service, inwardly bucket 13 interior feedwater, motor 14 drives agitators 1 rotation, thereby stirs current and washings enforcement washing process by the rotation of agitator 1.After passing through the washing process of being fixed time, the washings of dirt are discharged, water of Gong Geiing and washings are implemented rinse cycle through the stirring of agitator 1 again.After rinse cycle finishes, bucket 13 in by clutch 15 rotation of motor 14 being switched to, the dehydration outside the aperture of implementing to make the moisture that contains in the washings to form from the side face of interior bucket 13 under action of centrifugal force by interior bucket 13 rotations is discharged in barrels 12.Control, automatically carry out by not shown control device from washing to a succession of process of dewatering.

In last note washing process and rinse cycle, the current that agitator 1 forms and the stirring of washings are the principal elements of left and right sides washing (-)off properties.The agitator 1 of present embodiment not only forms complicated current in interior bucket 13, improve clean ability by stirring the frictional force that has also increased between washings simultaneously.Below, with reference to the structure of Fig. 2～6 explanation agitators 1.

As Fig. 2, shown in Figure 3, agitator 1 is by having the larger area periphery wing 2, form in the area of central part less the center wing 4 and 3 these three parts of the middle wing between the periphery wing 2 and the center wing 4 in outer circumference portion.Shown in Fig. 4 A and 4B, the periphery wing 2 and the center wing 4 constitute the driving body integrally formed by resin forming 20, transmit in the gyroaxis of motor 14 rotary driving forces through clutch 15 by inserting, and be driven in rotation at the chimeric axial region 6 that forms below the center wing 4.The wing is accommodated recess 7 in the middle of forming between the periphery wing 2 of above-mentioned driving body 20 and the center wing 4, as shown in Figure 3, dispose slide unit 5 in the middle wing is accommodated recess 7, the screw 9 that utilizes a plurality of positions below the middle wing is accommodated recess 7 to screw in is fixed on slide unit 5 on the driving body 20.Rotate freely on the above-mentioned slide unit 5 that ground is chimeric a middle wing 3.

Shown in Fig. 5 A and 5B, above-mentioned slide unit 5 is by supporting ring portion 5a and constituting in conjunction with ring portion 5b.Wherein support outer circumferential sides that ring portion 5a is positioned at slide unit 5, be mouthful word shape section and support middle the wing 3 that carries thereon, in conjunction with ring portion 5b be positioned at slide unit 5 inner circumferential side, with the middle wing 3 on formation combine hook portion 3a combination.In case after the middle wing 3 is pressed on the driving body 20 fixing slide unit 5, as shown in Figure 3, a pair of donut 3b, the 3c that the middle wing 3 forms below is located in the both sides of above-mentioned support ring portion 5a and separates slight gap with it, and, the outstanding slide protrusion 3d that forms contacts with supporting ring portion 5a between donut 3b, the 3c, and the middle wing 3 is supported on the slide unit 5 with rotating freely.Then, by on the wing 3 in the middle of being provided with in conjunction with hook portion 3a and slide unit 5 combine ring portion 5b combination between unci, be embedded in the state that middle the wing 3 on the slide unit 5 is not deviate from regard to maintenance.

According to this embedded structure of the middle wing 3 on above-mentioned slide unit 5, above the support ring portion 5a that the wing 3 slips are rotated in the middle of supporting, its outer circumference surface that supports ring portion 5a is surrounded with slight gap by a pair of donut 3b, 3c, play the effect of air trap, sands etc. can't enter sliding surface, thereby can not produce impairment to the slip rotation of the middle wing 3.And the wing is accommodated foreign matters such as sand in the recess 7 and is accommodated the peristome 7a that recess 7 bottom surfaces form from the middle wing and discharge in the middle of entering from the gap of 2 on the middle wing 3 and the periphery wing, so, can prevent to hinder the rotation of the centre wing 3 because of foreign matters such as the sands of nipping.In addition, the middle wing is accommodated on the two inside circumference faces of recess 7 and is formed step, the inner circumferential side of step forms flange part 7b, with cooperates at the excircle of the middle wing 3 and inner periphery outstanding downwards dip portion 3e, 3f, prevent that foreign matter such as coin from entering the gap between the centre wing 3, the periphery wing 2 and the center wing 4.

The above-mentioned periphery wing 2, the middle wing 3 and the center wing 4 form inclination curved surface separately respectively, and a plurality of blades 22,23 and 24 that formation projects upwards on curved surface, they in diametric effective width are, the middle wing 3 be in the middle of about 1/2, the center wing 4 of the periphery wing 2 is the wing 3 about 1/2.As shown in Figure 3, the center wing 4 is convex curved surface, is the top with the pivot, in all directions inclination that gently descends, and forms the center vane 24 that projects upwards on the curved surface that tilts of descending.The middle wing 3 is concave curvatures, with the continuous outside circular direction up-wards inclination of horizontal plane in the decline inclined plane of the center wing 4, and the outstanding intermediate blade 23 that forms on this curved surface.The periphery wing 2 is the concavity curved surface, descends to be divided into the top with the continuous interior perimembranous of the up-wards inclination face of the middle wing 3, and then outwards circumferencial direction slowly rises, and outstandingly on this curved surface forms bigger periphery blade 22.

Rotation drives the agitator 1 of above-mentioned formation, and is then maximum and be formed with under the effect of the periphery wing 2 of bigger periphery blade 22 at area, produces huge rotary water current in the horizontal direction.The center wing 4 that rotates simultaneously with the periphery wing 2 produces the mobile laterally small rotation current of branch from central division.Do not apply driving force on the middle wing 3, and apply the resistance of water and washings, thereby lag behind the periphery wing 2 and rotate with the rotation of the center wing 4, produce the current of vertical direction, but, because the extruding of the flowing water flow laterally of the acceptor center wing 4, become the current of incline direction.Like this, three pieces of fins produce current separately, and the rotation of the middle wing 3 lags behind, so in interior bucket 13, form complicated current, washings increases owing to complicated stirring makes the frictional force of locker room as a result, and by the motion of washings at direction of lay and above-below direction, spot becomes and is easy to come off.

The intermediate blade 23 that forms on the middle wing 3 is in the position lower than periphery blade 22 and center vane 24, utilization is stirred the middle wing 3 of washings inhibition and the periphery wing 2 and the center wing 4 interlocks of motion by periphery blade 22 and center vane 24, the wing 3 effects reduce in the middle of preventing, avoid simultaneously the middle wing 3 is applied bigger stress.

And, be formed with projection 25 between blade between a plurality of periphery blades 22 that form on the periphery wing 2, increased the washings in 22 recesses of periphery blade and the frictional force of the periphery wing 2, thereby, can improve the stirring action of 2 pairs of washings of the periphery wing.

Above Shuo Ming embodiment, the example that uses agitator of the present invention in automatic washing machine has been described, but, in automatic washing machine, be provided with in two barrel washing machines that scrubbing-and-drying unit, washtub and the dehydration barrel of functions/drying be provided with respectively and use agitator of the present invention, also can reach same effect.

As mentioned above, washing machine agitator among the present invention stirs the position by the center wing, the periphery wing and three of wing one-tenth in centre being arranged on therebetween, after the middle wing is driven by the center wing and the rotation of the periphery wing, the middle wing produces the rotation that lags behind the periphery wing and the center wing, the current that stack is produced by the middle wing on the current that produced by the periphery wing and the center wing, they interact and form complicated current, make washings produce complicated motion, increase the friction of locker room, increase mixing power, therefore can improve washing (-)off properties.

Claims

1. washing machine agitator is set at the top opening, accommodates the inner bottom part of the washtub of washings and water, utilizes rotary drive mechanism and is driven in rotation, and it is characterized in that: have

At the center wing of deciding to form in the radius, be formed with outstanding upward a plurality of center vane from pivot to the outside of disk,

At the thoughtful inboard periphery wing of deciding to form in the radius, be formed with outstanding upward a plurality of periphery blades outside disk, and

Rotatably intercalation between the center wing and the periphery wing, be formed with the middle wing of upward outstanding a plurality of intermediate blades.

2. washing machine agitator according to claim 1 is characterized in that: the periphery wing, the middle wing and the center wing at diametric width are: the radial width of the middle wing be in the middle of the radial width about 1/2, the center wing of periphery wing radial width is wing radial width about 1/2.

3. washing machine agitator according to claim 1 and 2 is characterized in that: the center wing and the periphery wing are integrally formed.

4. washing machine agitator according to claim 1 and 2 is characterized in that: wing the becoming with the pivot in center is the hemispherical of top.

5. washing machine agitator according to claim 1 and 2 is characterized in that: the middle wing inclination curved surface that rises to peripheral direction that becomes.

6. washing machine agitator according to claim 1 and 2 is characterized in that: periphery is wing become with interior all sides be the top, curved surface from peripheral direction to the substantial middle subordinate of radial direction that fall, rise to.

7. washing machine agitator according to claim 1 and 2 is characterized in that: the extreme higher position of intermediate blade is lower than the extreme higher position of center vane and periphery blade.

8. washing machine agitator according to claim 1, it is characterized in that: the middle wing combines with slide unit, and rotatably be supported in the sliding support portion that is formed on the slide unit, described slide unit is fixed on the middle wing that is formed between the center wing and the periphery wing and accommodates in the recess.

9. washing machine agitator according to claim 8 is characterized in that: the middle wing be formed with the two sides of sliding support portion with the relative a pair of donut of slight gap and with the slide protrusion of the top sliding-contact of sliding support portion.

10. washing machine agitator according to claim 8 is characterized in that: the middle wing is accommodated on the bottom surface of recess and is formed with peristome.

11. washing machine agitator according to claim 8 is characterized in that: the middle wing is accommodated on the lateral circle surface of recess and is formed with step.