CN102373605B

CN102373605B - Washing machine

Info

Publication number: CN102373605B
Application number: CN2011102407127A
Authority: CN
Inventors: 井泽浩一; 金田至功; 久野功二
Original assignee: Toshiba Corp; Toshiba Consumer Electronics Holdings Corp; Toshiba Home Appliances Corp
Current assignee: Toshiba Corp; Toshiba Lifestyle Products and Services Corp
Priority date: 2010-08-23
Filing date: 2011-08-22
Publication date: 2013-02-13
Anticipated expiration: 2031-08-22
Also published as: KR101236001B1; KR20120022646A; TW201215734A; JP2012040296A; CN102373605A; TWI452195B; JP5349424B2

Abstract

The present invention provides a washing machine for preventing the electric insulativity between a coil and a cylinder body of a damper to reduce. The washing machine is provided with the damper for supporting and anti-vibrating a water tank. The damper is provided with the cylinder body with a conducting wire lead-out hole; a formed coil unit accommodated inside the cylinder body and formed by molding a coil for generating a magnetic field and a magnetic yoke for inducing the coil with resin, and provided with a through hole extending along the axial direction; a shaft for repeatedly moving and inserting into the through holes; a magnetorheological fluid filled inside a gap between the shaft and the yoke, and the stickiness changes along the change of the magnetic field; a conducting wire of the coil guided out from the formed coil unit and led out from the conducting wire lead-out hole to the external part of the cylinder body; and damp proof materials are arranged on a part of the conducting wire, which passes through the conducting lead-out hole from the formed coil unit, thus the waterproof effect can be realized.

Description

Washing machine

Technical field

Embodiments of the present invention relate to washing machine.

Background technology

Washing machine, for example tumbling-box washing machine has following formation, possess in the enclosure the tank that is equipped with cylinder in inside and be used for this tank is carried out the damper (suspension) of vibrationproof supporting, reduce the vibration of the tank that the rotation along with cylinder causes by above-mentioned damper.

And, with regard to damper, in order to improve the vibrationproof performance, the known magneto-rheological fluid that viscosity changes along with the variation in magnetic field (MR fluid) that has used.In using the structure of this magneto-rheological fluid, for example in cylinder body, set in the coil for generation of magnetic field, but reciprocating motion be provided with axle with axial this coil of perforation, and between this axle and coil, fill magneto-rheological fluid.

Technical literature formerly

Patent documentation

Patent documentation 1: TOHKEMY 2010-104578 communique

Summary of the invention

But, in the structure that consists of as mentioned above, (washing machine in) immerses water in shell occurs, or the interior moisture of shell uprises and during dewfall, for example may occur that water is immersed in the cylinder body from the wire outlet of drawing winding wire, thereby reduce the electrical insulating property between coil and the cylinder body.

Therefore, provide a kind of washing machine that can prevent that the electrical insulating property between the coil in the damper that has used magneto-rheological fluid and the cylinder body from reducing.

The washing machine of present embodiment possesses the damper that tank is carried out the vibrationproof supporting, and above-mentioned damper possesses: cylinder body has the wire outlet; The formed coil unit is housed in the above-mentioned cylinder body, and the yoke moulding that reaches for the magnetic field of inducing this coil by the coil that uses resin will produce magnetic field forms, and is formed with the through hole that extends vertically; Axle, but reciprocating motion be inserted in the above-mentioned through hole; Magneto-rheological fluid is filled in the gap between this axle and the above-mentioned yoke, and viscosity changes along with the variation in magnetic field; The outside of above-mentioned cylinder body is derived and led to from above-mentioned wire outlet to the wire of above-mentioned coil from above-mentioned formed coil unit; Wherein, in above-mentioned wire, on the part of above-mentioned formed coil unit through the above-mentioned wire outlet of above-mentioned cylinder body, implemented WATER REPELLENT TREATMENT by damp-proof material.

Thus, can prevent coil in the damper that has used magneto-rheological fluid and the reduction of the electrical insulating property between the cylinder body.

Description of drawings

Fig. 1 is the longitudinal section of suspension in the present embodiment.

Fig. 2 is the amplification longitudinal section of major part.

Fig. 3 is the stereoscopic figure of suspension.

Fig. 4 is the stereoscopic figure of formed coil unit.

Fig. 5 is the longitudinal section of formed coil unit.

Fig. 6 is the front elevation of pars intermedia yoke.

Fig. 7 is the stereogram that is illustrated in the configuration relation between the wire of pars intermedia yoke before the moulding and coil.

Fig. 8 is the vertical profile side view of the Sketch of tumbling-box washing machine.

Reference numeral

1: shell 6: tank 7: suspension 8: motor 10: cylinder (swivelling chute)

23: damper 24: helical spring 25: cylinder body 26: axle 28: attaching parts

32: upper part connecting part 38: lower bearing box 41: bearing

42: upper bearing box (bearing box) 43: ditch section 44: the 45:O of filleting section shape ring

46: bearing 47: friction means 50: formed coil unit 51: the bottom yoke

53: the first bobbins 54 of 52: the first coils: 55: the second coils of pars intermedia yoke

Bobbin 57 in 56: the second: top yoke 58: resin 59: seal member

61: through hole 64: recess 65: wire 77: damp-proof material 80: magneto-rheological fluid

82: wire outlet 83: lining 83a: wire inserting hole 84: cornice section

The specific embodiment

Below, be applicable to the embodiment of tumbling-box washing machine with reference to description of drawings.At first, in Fig. 8 of the Sketch that tumbling-box washing machine is shown, in the substantial middle section of the front face (right side of Fig. 8) of the shell 1 that forms the washing machine shell layer, when being formed with washings gateway 2, be provided with the door 3 that opens and closes this washings gateway 2.

Top at shell 1 front face is provided with guidance panel 4, is provided with the control device 5 that usefulness is controlled in operation at its inboard (in the shell 1).

Be equipped with tank 6 in the inside of shell 1.This tank 6 have direction of principal axis point to before and after the transverse axis of (in Fig. 8, being a right left side) cylindric, the state that tilts by side direction before the suspension 7 of pairing left and right (only illustrating) by elastic bearing on the base plate 1a of shell 1.Have, the detailed construction of suspension 7 illustrates below again.

At the back of tank 6 motor 8 is installed.This motor 8 is for example to be made of dc brushless motor, belongs to outer-rotor type, is installed in the not shown rotating shaft of this rotor 8a central part, inserts the inside that passes to tank 6 via bearing block 9.

Be equipped with cylinder 10 in the inside of tank 6.It is that the transverse axis of fore-and-aft direction is cylindric that this cylinder 10 also is direction of principal axis, is connected to by the central part with these cylinder 10 rear portions on the leading section of rotating shaft of motor 8, thereby is supported with and the acclivitous state in front side coaxial with tank 6.

Cylinder 10 directly rotates by motor 8, so cylinder 10 is swivelling chutes, motor 8 plays a role as the drum drive that makes cylinder 10 rotations.

On all sidepieces (main part) of cylinder 10, but be formed with the aperture 11 that a plurality of water flowings are ventilated.For this, tank 6 consists of the structure of the capable of storing water of basic aporate.These cylinders 10 and tank 6 all have

peristome

12,13 in front, between the peristome 13 of tank 6 wherein and the washings gateway 2 ring-type retractable sack 14 are installed.

Thus, washings gateway 2 is connected to the inside of cylinder 10 by retractable sack 14, the peristome 13 of tank 6 and the peristome 12 of cylinder 10.

Minimum position at the tank 6 of capable of storing water is connected with drainpipe 16 by draining valve 15 halfway, thereby the water in the tank 6 can be discharged outside machine by this drainpipe 16.Reach upward the place ahead from the rear side of this tank 6, be equipped with drying device 17.

This drying device 17 is made of dehumidifier 18, pressure fan 19, heater 20 and circulation airduct 21, and dehumidified by 18 pairs of the dehumidifiers airborne moisture that (in the cylinder 10) discharges in tank 6, then generate dry wind by heater 20 these air of heating, and make this dry wind return (in the cylinder 10) in the tank 6, by repeatedly carrying out above-mentioned circulation, drying is housed in the washings in the cylinder 10.

Secondly, the structure of above-mentioned suspension 7 is described with reference to Fig. 1～Fig. 7.Such as Fig. 1 and shown in Figure 3, the helical spring 24 that suspension 7 has damper 23 and is made of compression helical spring.Wherein, damper 23 possesses the cylinder body 25 cylindraceous that is of up and down direction extension, and along the axle 26 of this cylinder body 25 in the above-below direction extension, and the bottom of axle 26 can be inserted in the cylinder body 25 at above-below direction with moving back and forth.

Be provided with attaching parts 28 in the bottom as the axial end of cylinder body 25.These attaching parts 28 have integratedly cap 28a and are connected this cap 28a outstanding connection axial region 28b downwards, (TIG welding) also welded in the interior perimembranous of cylinder body 25 with the peripheral part of this cap 28a by the lower ending opening section that is entrenched in cylinder body 25 by general cap 28a wherein, thereby attaching parts 28 are fixedly mounted on the cylinder body 25.

By the connection axial region 28b with attaching parts 28, be fastened on installing component 29 (with reference to Fig. 8) on the base plate 1a that is fixed in shell 1 with nut 31 across the elastic seat boards such as rubber 30 grades, thereby cylinder body 25 be connected on the installing component 29 of base plate 1a side.

Be connected with part connecting part 32 in the upper end of axle 26.By going up the connection axial region 32a of part connecting part 32, axial region 28b is same with being connected, be fastened on across the elastic seat boards such as rubber 34 grades with nut 35 on the installing component 33 of tank 6 (with reference to Fig. 8), thereby axle 26 be connected on the installing component 33 of tank 6 sides.

The chimeric spring support 36 that is fixed with is equipped with helical spring 24 between the upper end of this spring support 36 and cylinder body 25 in the bottom of upper part connecting part 32, and this helical spring 24 is mounted with the state around axle 26.

The pars intermedia of the above-below direction in cylinder body 25 contains lower bearing box 38 in the form of a ring.Be formed with the ditch section 39 of extending to circumferencial direction at the peripheral part of this lower bearing box 38, by making in cylinder body 25 surrounding wall portion corresponding to the part of ditch section 39 filleting to the inside, thereby lower bearing box 38 be fixed in the cylinder body 25.

With filleting part as filleting section 40.Also have, the place at the peripheral part of lower bearing box 38 is formed with the 39a of ditch section (with reference to Fig. 1) that axially opens.

Take in the bearing 41 that is fixed with ring-type in the interior perimembranous of lower bearing box 38, this bearing 41 is supporting axle 26 in the reciprocating mode of direction of principal axis (above-below direction).Bearing 41 for example is made of the sintered oil-retaining metal.

Anti drop-off parts 26a is installed in the bottom of axle 26, and by the following butt of this anti drop-off parts 26a and lower bearing box 38, restrictive axes 26 is moved upward.

Inside in the upper end of axial the other end of conduct of cylinder body 25 also contains upper bearing box 42 in the form of a ring.In this upper bearing box 42, have outside dimension on the top of upper bearing box 42 less than the 42b of cylinder section of bottom 42a, and between this bottom 42a and the 42b of cylinder section, be formed with stage portion 42c.The 42b of cylinder section is outstanding upward from cylinder body 25.

On the peripheral part of the bottom of this upper bearing box 42 42a, as shown in Figure 2, along the all-round ditch section 43 that is formed with, by making in cylinder body 25 surrounding wall portion corresponding to the part of ditch section 43 filleting to the inside, thereby upper bearing box 42 is fixed on the upper end of cylinder body 25.With filleting part as filleting section 44.

At this moment, filleting section 44 by the rolling filleting be located at all-round on.In ditch section 43 O shape ring 45 is installed, this O shape ring 45 by cramping between the filleting section 44 of the ditch section 43 of upper bearing box 42 and cylinder body 25.

The bottom of helical spring 24 is supported by the stage portion 42c of upper bearing box 42.On the top of the interior perimembranous of upper bearing box 42, take in the bearing 46 that is fixed with ring-type, this bearing 46 is so that the mode back shaft 26 that axle 26 can move back and forth at direction of principal axis (above-below direction).This bearing 46 also bearing 41 with the bottom is identical, for example is made of the sintered oil-retaining metal.

In the interior perimembranous of upper bearing box 42, take in the form of a ring friction means 47 at the downside of bearing 46 to be pressed into state, the interior perimembranous of this friction means 47 is crimped on the outer peripheral face of axle 26 slidably.

In cylinder body 25, the part between lower bearing box 38 and upper bearing box 42 contains formed coil unit 50.This formed coil unit 50 is to be fixed by the state of

lower bearing box

38 and 42 clampings of upper bearing box.

Such as Fig. 1, Fig. 4, shown in Figure 5, formed coil unit 50 has: bottom yoke 51; The first bobbin 53 is used for package the first coil 52; Pars intermedia yoke 54; The second bobbin 56 is used for package the second coil 55; Top yoke 57; Molding resin 58 is used for these parts are integrated.

With regard to resin 58, use such as thermoplastic resin (nylon, PBT, PET, PP etc.).On bottom yoke 51 and top yoke 57 as the axial both ends of formed coil unit 50, to be pressed into state in the form of a ring seal member 59 is installed.

These seal members 59 use the material identical with friction means 47, and interior perimembranous is crimped on the outer peripheral face of axle 26 slidably.

Formed coil unit 50 has the through hole 61 that axially connects at central portion, and it is cylindric that integral body is, and in this through hole 61, can be inserted with to reciprocating motion axle 26 on direction of principal axis.

On the peripheral part of formed coil unit 50, be formed with the ditch section 62 of axially extending, and be formed with the recess 63 that in this ditch section 62, is positioned at the circle on the position corresponding with pars intermedia yoke 54, with the rectangular-shaped recess 64 of being connected this recess 63 and connecting to circumferencial direction.Each

yoke

51,57,54 plays the effect of inducing coil magnetic field.

Derive two wires 65 that the first coil 52 and the second coil 55 are arranged to the outside from rectangular-shaped recess 64 wherein.As shown in Figure 5, the radicle of each wire 65 connects

corresponding bobbin

53,56 end plate and is connected to each

coil

52,55 end, and is covered by resin 58.

Each wire 65 is covered by the pipe 65a of resin manufacture around the wire.

At this, on pars intermedia yoke 54, such as Figure 6 and Figure 7, be formed with ditch section 68 at a place of peripheral part, this ditch section 68 has conductor configurations ditch 66 and overlap joint line configuration ditch 67.Conductor configurations ditch 66 and overlap joint line configuration ditch 67 are open-minded to the direction of principal axis of pars intermedia yoke 54.

Central portion in ditch section 68 is formed with the inlet 69 that the screw hole by circle consists of, and on this inlet 69, the columned screw 70 (with reference to Fig. 4) that has hexagonal recess 70a at end face is installed.Inlet 69 is be used to injecting magneto-rheological fluid described below.

Also have, as shown in Figure 6, on the peripheral part of pars intermedia yoke 54, be formed with narrow ditch section 71 of Width ditch section 68 at three places.On pars intermedia yoke 54, be formed with a plurality of locating holes 72, this locating hole 72 is used for determining first and

second bobbin

53,56 position.

The first coil 52 and the second coil 55 are connected in series by overlap joint line 73 (with reference to Fig. 7).Be connected to a wire 65 on the first coil 52, and be connected to a wire 65 on the second coil 55, derive to the outside from formed coil unit 50 in the manner as described below.

Namely, used wire guiding parts 74 as shown in Figure 7.Wire guiding parts 74 is the section of an end opening by the synthetic resin manufacturing

The word shape has two holes 75, and separates the partitions 76 in these holes 75.

Two wires 65 are inserted in respectively in the hole 75 of wire guiding parts 74 and bend under the state of L word shape, wire guiding parts 74 is configured in the conductor configurations ditch 66 of pars intermedia yoke 54, and, overlap joint line 73 is configured under the state in the overlap joint line configuration ditch 67 also potting resin 58 in these conductor configurations ditches 66 and overlap joint line configuration ditch 67.Resin 58 also is filled in the wire guiding parts 74 (with reference to Fig. 5).

As shown in Figure 4, under the state that two wires 65 are covered by resin 58 with radicle, export to the outside of formed coil unit 50 from recess 64.Also be filled with resin 58 in other ditch section 71 of pars intermedia yoke 54.Part in the peripheral part of pars intermedia yoke 54 except

ditch section

68,71 is exposed from resin 58.

In formed coil unit 50, by at the recess 64 as the derivation of two wires 65 part, the damp-proof material 77 that embedding is for example formed by silicone (with reference to Fig. 1, Fig. 2, Fig. 4, Fig. 5), be filled to the inboard of wire guiding parts 74 by damp-proof material 77 and in the whole recess 64 of landfill, carry out simultaneously WATER REPELLENT TREATMENT for the position that external force can stabilizing lead 56.

At this, be illustrated as the internal diameter size of the through hole 61 of type coil unit 50.As shown in Figure 5, three yokes 51 on bottom, pars intermedia and top, 54,57 internal diameter size are set as same size, and and form for example gap about 0.4mm 78 between the outer peripheral face of axle 26.

First and second two

bobbins

53,56 internal diameter size are set as same size, and size is set as and is a bit larger tham three

yokes

51,54,57 internal diameter size, and and form for example gap about 1.0mm 79 between the outer peripheral face of axle 26.

And, the gap 78 between the outer peripheral face of axle 26 and above-mentioned three

yokes

51,54,57 inner peripheral surface, and in the gap 79 between the outer peripheral face of axle 26 and above-mentioned two

bobbins

53,56 the inner peripheral surface, be injected with magneto-rheological fluid 80.

Have, magneto-rheological fluid 80 also is infused in the inboard of seal member 59 up and down again.This magneto-rheological fluid 80, from inlet 69 injections of formed coil unit 50, and this inlet 69 is sealed by screw 70.

Magneto-rheological fluid 80 is to consist of such as the ferromagnetism particles such as iron, carbonyl iron being dispersed in the oil, has when the magnetic viscosity fluid is applied magnetic field the catenulate cluster of ferromagnetic particles shape (cluster), thereby the characteristic that apparent viscosity is risen.

At this moment, the bottom of formed coil unit 50 and the seal member on top 59, and the friction means 47 of upper bearing box 42 play the frcition damper effect that prevents the friction of generation between effect that magneto-rheological fluid 80 leaks to the outside and utilization and the axle 26.

In addition, as shown in Figure 5, between bottom yoke 51 and the first bobbin 53, between the first bobbin 53 and the pars intermedia yoke 54, between pars intermedia yoke 54 and the second bobbin 56 and between the second bobbin 56 and the top yoke 57, be respectively equipped with the O shape ring 81 of sealing usefulness.These O shape rings 81 also have the function that prevents that magneto-rheological fluid 80 from leaking to the outside.

Axial pars intermedia in cylinder body 25 surrounding wall portion in the position corresponding to circular depressions 63 (with reference to Fig. 4), is formed with the wire outlet 82 (with reference to Fig. 1, Fig. 2) that is made of circular hole

On this wire outlet 82, chimeric have a lining 83 with wire inserting hole 83a, and above-mentioned two wires 56 are drawn to the outside by the wire inserting hole 83a of this lining 83.At this moment, lining 83 uses resin, for example product of nylon.

On the peripheral part of cylinder body 25, be provided with the lambdoid cornice section 84 that is positioned at lining 83 tops (top of wire outlet 82).This cornice section 84 is bonded on the outer peripheral face of cylinder body 25 by jointing material.This cornice section 84 is used for preventing from being immersed in the cylinder body 25 by wire outlet 82 (wire inserting hole 83a) from the water of top.

In addition, on the peripheral part of cylinder body 25, wiring fixed part 85 (with reference to Fig. 3) is installed, and is drawn out to the wire 65 of cylinder body 25 outsides by being located at cloth wire maintainer 86 maintenances on this wiring fixed part 85.

Have again, in cylinder body 25, between the cap 28a and lower bearing box 38 of attaching parts 28, be formed with spatial portion 88 (with reference to Fig. 1).

Secondly, the assembling process of the suspension 7 with above-mentioned formation is described.In advance, on an end of the cylinder body 25 of axial both ends opening, the cap 28a of the parts 28 that are fixedly connected by welding.

Then, in the position different from cylinder body 25, on the peripheral part of axle 26, with contain bearing 41 lower bearing box 38, axial both ends be equipped with seal member 59 formed coil unit 50, contain the chimeric and assembling of the upper bearing box 42 of friction means 47 and bearing 46 in, at the leading section of axle 26 anti drop-off parts 26a is installed, and they are positioned.

At this moment, with the 39a of ditch section that axially opens on the peripheral part of lower bearing box 38, and the aligned in position of the ditch section 62 of axially extending on the peripheral part of formed coil unit 50.And, in the ditch section 43 of the peripheral part of upper bearing box 42 O shapes ring 45 is installed.

Secondly, inject magneto-rheological fluid 80 from inlet 69.Magneto-rheological fluid 80 is injected in the

gap

78,79 between the inner peripheral surface of the outer peripheral face of axle 26 and formed coil unit 50, also is injected into the inboard of seal member 59 up and down.Inject after the magneto-rheological fluid 80, mounting screw 70 on the inlet 69, thus sealing inlet 69.

Secondly, will be from the formed coil unit leading section of 50 wires 65 of deriving, insert from the upper end open section of cylinder body 25, and use not shown hanger, the leading section of this wire 65 is drawn out to the outside of cylinder body 25 from the wire outlet 82 of cylinder body 25.At this moment, on the wire outlet 82 lining 83 is not installed.

Secondly, wire 65 is configured in the ditch section 62 of the 39a of ditch section of lower bearing box 38 and formed coil unit 50, so that wire 65 is in not from the outstanding state (with reference to Fig. 4) of the outer peripheral face of lower bearing box 38 and formed coil unit 50, then will be assembled in lower bearing box 38, formed coil unit 50 and upper bearing box 42 on the axle 26, with axle 26, be inserted in the cylinder body 25 from the upper end open section of cylinder body 25.Along with these being inserted in cylinder bodies 25, progressively wire 65 is drawn to the outside.

Secondly, under the state of the location of having carried out 42 pairs of cylinder bodies 25 of upper bearing box, by the filleting that rolled in position corresponding with the ditch section 43 of upper bearing box 42 on the peripheral part of the upper end side of cylinder body 25, so that filleting section 44 to be set, thereby upper bearing box 42 is fixed on the top of cylinder body 25.

Carry out filleting by the position to ditch section 39 correspondences of the peripheral part of the peripheral part up and down section bearing box 38 of the axial pars intermedia of cylinder body 25, so that filleting section 40 to be set, thereby lower bearing box 38 is fixed on pars intermedia in the cylinder body 25.

Secondly, cylinder body 25 and axle 26 are under the state of laterally (approximate horizontal state), at the wire outlet 82 from cylinder body 25, use the utensil (not shown) such as entry needle, the recess 64 part embeddings of deriving the rectangle of part as wire 65 are had mobile slightly damp-proof material 77, thereby covered the derivation part (with reference to Fig. 4) of wire 65 by this damp-proof material 77.

Damp-proof material 77 uses for example silicone.At this moment, in order to prevent that damp-proof material 77 to the outside of recess 64, for example to recess 63 or 62 outflows of ditch section of circle, preferably making the recess 64 of rectangle be in downside.By placing with this state and making damp-proof material 77 sclerosis carry out WATER REPELLENT TREATMENT.

Then, 65 slotting the leading in the wire inserting hole 83a of lining 83 of two wires of cylinder body 25 outsides will be led to, and lining 83 is entrenched under the state of peripheral part of two wires 65 to cylinder body 25 side shiftings, thereby this lining 83 is entrenched on the wire outlet 82 of cylinder body 25 (with reference to Fig. 1～Fig. 3).

Then on the upper end of cylinder body 25, dispose helical spring 24 in the mode around axle 26 tops, and in the upper end of axle 26, chimeric fixed spring stent 36 and upper part connecting part 32.

Thus, between the upper bearing box 42 and spring support 36 of cylinder body 25 upper ends, helical spring 24 is in compressed state.In addition, on the peripheral part of cylinder body 25, installation wiring fixed part 85 (with reference to Fig. 3) keeps wire 65 by cloth wire maintainer 86.Thus, finish the assembling of suspension 7.

The suspension 7 of assembling is provided in the left and right sides of tank 6 like this.And the wire 65 of deriving from each suspension 7 is connected on the not shown drive circuit.First and

second coil

52,55 is switched on by drive circuit and is cut off the power supply control by control device 5.

In the above-described configuration, the action of the above-mentioned suspension 7 relevant with the washing operation described.At first, imagine the state that first and

second coil

52,55 is not switched on.

When cylinder 10 was driven in rotation in washing stroke or dehydration stroke and dry trip, tank 6 mainly vibrated at above-below direction.Respond the up-down vibration of this tank 6, in suspension 7, the axle 26 that is connected in tank 6 sides moves up and down with respect to the cylinder body 25 of the base plate 1a side that is fixed on shell 1 when making helical spring 24 flexible.

At this moment, except the vibration attenuation effect by this helical spring 24, the frictional resistance that friction means 47 and seal member 59 apply all the time to axle 26 is damping force, simultaneously axle 26 and three

yokes

51,54,57 and

bobbin

53,56 between the magneto-rheological fluid 80 of filling, the frictional resistance that produces by its viscosity applies damping force, thereby makes the amplitude fading of tank 6.

At this, when the vibration of tank 6 further becomes large, the rotary speed of for example cylinder 10 reaches resonance rotational speed (about 100～300rpm) time, first and

second coil

52,55 is energized.

Have, this power on condition is not limited to above-mentioned rotary speed again, also can be, switches on when working as vibration greater than setting value by the vibration of vibration detecting unit detection tank 6.

Then, when satisfying above-mentioned power on condition, when first and

second coil

52,55 is energized, mainly apply magnetic field by

yoke

51,54,57 to magneto-rheological fluid 80, thereby the viscosity of magneto-rheological fluid 80 improves, thus, frictional resistance increases and becomes large.

, by the frictional resistance to axle 26, further increase than above-mentioned situation (situation that first and

second coil

52,55 is not switched on), it is large that damping force becomes like this.Thus, can effectively the decay vibration of tank 6.

Also have, thereby first and

second coil

52,55 produces the viscosity that magneto-rheological fluid 80 is controlled in magnetic field corresponding to current value of moving with coil midstream, this magnetic field that produces can change according to current value, thereby can control changeably the viscosity of magneto-rheological fluid 80.

On the other hand, in the above-described configuration, imagination is in shell 1 interior immersion water, the perhaps situation of shell 1 interior generation dewfall.In suspension 7, because chimeric and be welded with the cap 28a of attaching parts 28 in the lower ending opening section of cylinder body 25, thus can prevent that sealing is immersed in the cylinder body 25 from the bottom of cylinder body 25.

In addition, owing to upper bearing box 42 arranged in that the upper end open section of cylinder body 25 is chimeric, along the all-round filleting section 44 that is provided with, and between cylinder body 25 and upper bearing box 42, be provided with O shape and encircle, thereby can prevent that sealing is immersed in the cylinder body 25 from the upper end of cylinder body 25.

And, because the chimeric lining 83 that is equipped with on the wire outlet 82 in cylinder body 25 surrounding wall portion is immersed in the cylinder body 25 by this wire outlet 82 from the outside of cylinder body 25 so can prevent as far as possible sealing.In addition, on cylinder body 25 peripheral parts, be provided with the cornice section 84 that is positioned at lining 83 tops, so can prevent from as far as possible being immersed in the cylinder body 25 by wire outlet 82 along the water that cylinder body 25 outer peripheral faces flow down.

At this, even imagination is equipped with lining 83 at wire outlet 82 places, the water of cylinder body 25 outsides passes through the gap between lining 83 and the wire outlet 82 or passes through the wire inserting hole 83a of lining 83, is immersed in the cylinder body 25.

When water immerses cylinder body 25 when interior, this water is immersed in the

coil

52,55 that is wrapped on the

bobbin

53,56 by the minimum gap between wire 65 outer peripheral faces and the resin 58, therefore, connecting portion between the radicle of

coil

52,55 end and wire 65, and particularly pars intermedia yoke 54 might form by water and is electrically connected.

And pars intermedia yoke 54 contacts with cylinder body 25, and is electrically connected with the most metals parts that consist of damper 23.Therefore, when water was immersed in this wire 65 and

coil

52,55 end by wire 65, the surface of wire 65 and damper 23 (cylinder body 25) was in status of electrically connecting, thus may significantly reduce

coil

52,55 and cylinder body 25 between electrical insulating property.

This point, in the above-described embodiment, on the recess 64 as the derivation part of

coil

52,55 wire 65 in formed coil unit 50, implement WATER REPELLENT TREATMENT with damp-proof material 77, even water is immersed in the cylinder body 25 by lining 83, can prevent that also this water is immersed in the connecting portion between the radicle of wire 65 and

coil

52,55 the end, thus can prevent

coil

52,55 and cylinder body 25 between the reduction of electrical insulating property, can prevent in advance electric shock accidents etc.

According to above-mentioned embodiment, can obtain following action effect.

From the part of formed coil unit 50 through the wire outlet 82 of cylinder bodies 25, on the recess 64 as the derivation part of wire 65 in formed coil unit 50, implemented WATER REPELLENT TREATMENT with damp-proof material 77 at

coil

52,55 wire 65.

According to this formation, even water is immersed in the cylinder body 25 by lining 83, can prevent that also this water is immersed in the connecting portion between the radicle of wire 65 and

coil

52,55 the end, thereby can prevent

coil

52,55 and cylinder body 25 between the reduction of electrical insulating property.

At this moment, use the WATER REPELLENT TREATMENT of damp-proof material 77, so long as wire 65 from the formed coil unit 50 parts through the wire outlet 82 of cylinder bodies 25, for example also can locate to implement WATER REPELLENT TREATMENT in wire outlet 82 (lining 83 parts).

Such as present embodiment, use damp-proof material 77 to implement WATER REPELLENT TREATMENT by deriving part at the wire 65 of formed coil unit 50, thereby damp-proof material 77 can not be exposed to the outside of cylinder body 25, in addition, the load that vibration causes be difficult to concentrate on damp-proof material 77 near, so favourable to vibrating.

Since damp-proof material 77 by embedding be located in the formed coil unit 50 wire 65 derive part around in the recess 64 that is provided with, therefore, damp-proof material 77 is outstanding and do not hinder other.

Chimeric on the wire outlet 82 of cylinder body 25 have a lining 83, and wire 65 is led to the outside by the wire inserting hole 83a of this lining 83.

According to this formation, by at wire outlet 82 lining 83 being set, compare with the situation that is not provided with lining, more can make shipwreck to enter in the cylinder body 25 from wire outlet 82.In addition, because lining 83 is by resin manufacture, therefore have the rigidity height, can improve installation strength, good moldability, can the cheap advantage of making.

At the peripheral part of cylinder body 25, because cornice section 84 is arranged to be positioned at lining 83 tops, thereby can prevent from as far as possible being immersed in the cylinder body 25 by wire outlet 82 along the water that cylinder body 25 outer peripheral faces flow down.

Have attaching parts 28 in the bottom as the axial end of cylinder body 25, the cap 28a of cylinder body 25 and attaching parts 28 is by being welded and fixed installation, thereby can prevent reliably that sealing is immersed in the cylinder body 25 from the bottom of cylinder body 25.

On the upper end as axial the other end of cylinder body 25, but in the time of the bearing 46 of configuration reciprocating motion ground back shaft 26, chimeric configuration is used for the upper bearing box 42 of spring bearing 46, and cylinder body 25 is fixed by the rolling filleting with upper bearing box 42.

Thus, can be along the all-round filleting section 44 that arranges on the peripheral part of cylinder body 25 upper ends, thus can prevent that sealing is immersed in the cylinder body 25 from the upper end of cylinder body 25 and the junction surface between the upper bearing box 42.

In addition, between the peripheral part of cylinder body 25 and upper bearing box 42, be provided with O shape ring, thereby can prevent further that sealing is immersed in the cylinder body 25 from the top of cylinder body 25.

Other embodiment

Lining 83 on the chimeric wire outlet 82 that is installed in cylinder body 25 can replace resinous lining 83 with rubber system.When using the lining 83 of rubber system, can prevent from as far as possible being applied to concentrating of load on the wire 65, favourable to vibrating.And, also have the advantage that can improve the close property of wire outlet 82.

In formed coil unit 50, it also can be more than three that coil can only be one, and in addition, yoke can be two or more.

Embodiment as washing machine is not limited to tumbling-box washing machine, also can be, when longitudinal type tank inside possesses swivelling chute, possesses the so-called longitudinal type washing machine of stirring body in this swivelling chute.

According to aforesaid embodiment, by at the wire of coil on the part of formed coil unit through the wire outlet of cylinder body, implement WATER REPELLENT TREATMENT with damp-proof material, can prevent the reduction of the electrical insulating property between coil and the cylinder body.

The present invention has illustrated several embodiments, and these embodiments are to propose as example, does not mean at the protection domain that limits invention.These new embodiments can be implemented with other various ways, in the scope that does not depart from the invention aim, can carry out various omissions, replacement, change.These embodiments or its distortion are contained in the protection domain or aim of invention, also are contained in the invention and its impartial protection domain of putting down in writing in claims.

Claims

1. a washing machine possesses the damper that tank is carried out the vibrationproof supporting, it is characterized in that,

Above-mentioned damper possesses:

Cylinder body has the wire outlet;

The formed coil unit is housed in the above-mentioned cylinder body, forms by the yoke moulding of using resin to reach for the magnetic field of inducing this coil for generation of the coil in magnetic field, and is formed with the through hole that extends vertically;

Axle, but reciprocating motion be inserted in the above-mentioned through hole;

Magneto-rheological fluid be filled in the gap between this axle and the above-mentioned yoke, and viscosity changes along with the variation in magnetic field; And

The outside of above-mentioned cylinder body is derived and led to from above-mentioned wire outlet to the wire of above-mentioned coil from above-mentioned formed coil unit;

Wherein, on the part of above-mentioned formed coil unit through the above-mentioned wire outlet of above-mentioned cylinder body, use damp-proof material to implement WATER REPELLENT TREATMENT at above-mentioned wire.

2. washing machine as claimed in claim 1 is characterized in that,

Above-mentioned damp-proof material is located on the derivation part of the above-mentioned wire in the above-mentioned formed coil unit.

3. washing machine as claimed in claim 2 is characterized in that,

Be provided with recess around the derivation part of the above-mentioned wire in above-mentioned formed coil unit, above-mentioned damp-proof material is potted in the above-mentioned recess.

4. washing machine as claimed in claim 1 is characterized in that,

Axial end at above-mentioned cylinder body has attaching parts, and above-mentioned cylinder body and above-mentioned attaching parts are fixed together by welding.

5. washing machine as claimed in claim 4 is characterized in that,

On axial the other end of above-mentioned cylinder body, but dispose the bearing that reciprocating motion ground supports above-mentioned axle, and the chimeric bearing box that supports above-mentioned bearing that disposes, above-mentioned cylinder body and above-mentioned bearing box are fixed by the rolling filleting.

6. washing machine as claimed in claim 5 is characterized in that,

In the peripheral part of above-mentioned bearing box, be provided with ditch section with the chimeric part of above-mentioned cylinder body, in this ditch section O shape ring be installed.

7. washing machine as claimed in claim 1 is characterized in that,

On the above-mentioned wire outlet of above-mentioned cylinder body, chimeric have a resinous lining with wire inserting hole, and above-mentioned wire is led to the outside by above-mentioned wire inserting hole.

8. washing machine as claimed in claim 1 is characterized in that,

On the above-mentioned wire outlet of above-mentioned cylinder body, the chimeric lining that rubber system with wire inserting hole is arranged, above-mentioned wire is led to the outside by above-mentioned wire inserting hole.

9. such as claim 7 or 8 described washing machines, it is characterized in that,

Be provided with cornice section above the above-mentioned wire outlet in the peripheral part of above-mentioned cylinder body.