CN101319452B - Drum type washing machine - Google Patents
Drum type washing machine Download PDFInfo
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- CN101319452B CN101319452B CN2008100040978A CN200810004097A CN101319452B CN 101319452 B CN101319452 B CN 101319452B CN 2008100040978 A CN2008100040978 A CN 2008100040978A CN 200810004097 A CN200810004097 A CN 200810004097A CN 101319452 B CN101319452 B CN 101319452B
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Abstract
This invention provides a drum-type washer with low vibration. The drum-type washer of this invention at least includes: an approximately cylindrical water tank supported in a case of the washer by utilizing multiple spring keeping mechanisms and multiple weakening devices; a washing groove that can be rotatably installed in the water tank and used for accepting washing; and an electric power rotatably driving the washing groove, wherein the spring keeping mechanism and the weakening device are configured to at least clamp a rotary shaft of the washing groove so as to enable the weakening performance of the weakening device configured at one side of the rotary downward direction when the washing groove dehydrates to be higher than that of the weakening device configured at one side of the upward direction.
Description
Technical field
The present invention relates to the vibrationproof technology of tumbling-box washing machine.
Background technology
General tumbling-box washing machine by the tank of resiliency supported in cleaning-drum, in this tank, make rotating shaft with respect to 0～30 ° of degree of horizontal tilt and can be rotatably set in sink, be arranged on the rear portion of tank and motor that rotation drives this sink constitutes, be provided with the peristome of clothing class in the cabinet front.
The clothing class is put into this sink wash, the clothing class after making this washing is dried, before the drying, need to remove moisture from the clothing class as much as possible.So, have a lot of apertures in advance in the side of this sink, sink is rotated at a high speed carry out centrifugal dehydration.
When carrying out centrifugal dehydration, it is difficult that the clothing class is evenly dispersed in the sink, can produce the secund of clothing class.If rotate at a high speed, then produce bigger centrifugal force and cause bigger vibration with this state.Reduce vibration and support tank in order to discharge centrifugal force with spring.Owing to only can not suppress vibration, give and attenuation so damper is set in the lump with spring-supported words.Regulating spring, damper are so that can reduce vibration and carry out centrifugal dehydration with suitable state.
If reduce the spring constant of spring, then be difficult for transmitting the vibration of tank to the outside of washing machine.But if reduce the constant of spring, can sink significantly and be adjacent to spring in the occasion of putting into clothing class and water, the vibration in the time of can not relaxing washing increases again the burden of spring is impelled the spring deterioration.
In addition, damper is if improve its fade performance, and the resonance that causes when starting that then can suppress to dewater also starts smoothly.But if make fade performance too high, then vibration can be delivered to the outside of washing machine significantly when rotating at a high speed.
In the prior art that patent documentation 1 (spy opens flat 9-253385 communique) is put down in writing, following scheme has been proposed: the direction of rotation of the sink during with respect to dehydration, the fade performance of damper that has a side of speed upwards by increase, the vibration when suppressing resonance.
Yet, as described in patent documentation 1, with spring from above the vibration can suppress to resonate effectively the time of the occasion of the tumbling-box washing machine that supports to of the bottom of suspention tank and tank with being easy to left and right moving.But with the occasion of suspension bracket from the tumbling-box washing machine of the lower support of tank, for anti-water stopping trough overturning, it is supported that the bottom of tank is difficult to left and right moving ground.The occasion of this tumbling-box washing machine becomes the action of the tank different with patent documentation 1, the vibration in the time of can not suppressing to resonate effectively.And, when rotating at a high speed, exist the vibration of tank be easy to the bigger transmission in the outside of washing machine may.
Summary of the invention
The invention is characterized in, make supported configurations when dehydration above-mentioned sink direction of rotation become the damping capacity of attenuating device of the tank of a downward side, bigger than the damping capacity that is configured in the attenuating device that becomes a side upwards.
According to the present invention, the vibration in the time of can reducing the tumbling-box washing machine dehydration.
Description of drawings
Fig. 1 is the front view of the inside of expression tumbling-box washing machine.
Fig. 2 is the figure of the side-to-side vibrations pattern of expression tank.
Fig. 3 is the figure of the up-down vibration pattern of expression tank.
Fig. 4 is the figure of the rotary mode of expression tank.
Fig. 5 is the side view of the inside of expression present embodiment.
Fig. 6 is the front view of the inside of expression present embodiment.
Fig. 7 is an expression suspension bracket outside drawing.
Fig. 8 is the stereogram of the inside of expression damper.
Fig. 9 is the stereogram of the inside of expression damper.
Figure 10 is the stereogram of the inside of expression damper.
Figure 11 is the figure of the characteristic of expression damper.
Figure 12 is the power on the floor of being delivered to and the graph of a relation of left and right sides displacement.
Figure 13 is the power and the graph of a relation of displacement up and down that is delivered on the floor.
Figure 14 is the stereogram of the inside of friction damper.
Figure 15 is the stereogram of the inside of variable shock absorber.
Figure 16 is the control flow chart according to the damper of rotation number.
Figure 17 is the control flow chart according to the damper of vibratory output.
The specific embodiment
Before the explanation embodiments of the invention, use Fig. 1～Fig. 5 that principle of the present invention is described.
Fig. 1 simplifies the inside of tumbling-box washing machine and represents.In cabinet 1, tank 2 in the lower support of above-mentioned tank 2 by suspension bracket 4 (left side 4L, right side 4R).Sink 3 is rotatably installed in the inboard of tank 2.By being rotated at a high speed, tank 2 dewaters.In Fig. 1, turn left and dewater.In when dehydration, the clothing class is arranged, but the clothing class is not evenly distributed in the sink 3 in sink 3, produce secund cloth 8.Thereby produce centrifugal force F and make tank 2 vibration owing to secund cloth 8 rotates with sink 3.This vibration is born by suspension bracket 4.Suspension bracket 4L supports the bottom, left side of tank 2, and suspension bracket 4R supports the lower right side of tank 2.Suspension bracket 4L is made of spring 5L and damper 6L.And similarly, suspension bracket 4R is made of spring 5R and damper 6R.Vibration when utilizing damper 6L, 6R to suppress 2 resonance of above-mentioned tank.The vibration that the fade performance of damper 6L, 6R is big more can suppress to resonate more the time.In addition, vibration can not be suppressed, vibration can be suppressed effectively at the bigger local mounting shock absorber of vibration at the local mounting shock absorber that does not vibrate.
On the other hand, become the high rotation number when steady if surpass the resonance rotation number, then the vibration of tank 2 diminishes.But, must arouse attention for the vibration that is delivered on the floor by suspension bracket 4L, 4R, cabinet 1, rubber legs 7.The fade performance of suspension bracket 4L, 4R ( damper 6L, 6R) is high more, and the damping force of generation is big more, and the vibration transfer that makes tank 2 is to the floor.Thereby, in order to suppress transfer of vibration, wish to reduce the fade performance of suspension bracket 4L, 4R.And in the occasion of same fade performance, stretching of suspension bracket is more little, and the damping force of generation is more little, and can suppress transfer of vibration.
The position configuration damper of in sum, wishing when resonance, to vibrate significantly, vibrating steadily the time lessly.By doing like this, inhibition is vibrated in the time of the transmission on floor, the vibration of tank in the time of can suppressing to resonate effectively.
So, use the action of the damper about Fig. 2～Fig. 4 research.Go forward side by side about tank 2 exists basically pattern, go forward side by side pattern, these three kinds of vibration modes of rotary mode up and down.For each vibration mode, strong point P1, the P2 of expression tank 2 and suspension bracket in Fig. 2 (A), Fig. 3 (A), Fig. 4 (A).These resonance modes change by rotation number.Near 150r/min, about the pattern of going forward side by side become big (during resonance); Near 220r/min, it is big that the pattern of going forward side by side up and down becomes; At 400～600r/min, it is big that rotary mode becomes; After this under the state of this pattern, its vibration diminishes gradually.Resonance by the time problematic pattern and the pattern of going forward side by side up and down of going forward side by side about being, problematic when steady is rotary mode.
At first, with the pattern of going forward side by side about Fig. 2 research.Owing to utilize two suspension brackets to support tank 2, so compare with top and be difficult for action in the bottom of tank 2 at the some P1, the P2 that are positioned at the bottom.Therefore, shown in Fig. 2 (A), the top of tank 2 is bigger than the bottom vibration.About when going forward side by side that secund cloth is positioned at the left side before the resonance of pattern, tank 2 utilizes its centrifugal force to be moved to the left, strong point P1, P2 move to the position of a1, a2.And on the contrary, when secund cloth was positioned at the right, tank 2 moved right, and strong point P1, P2 move to the position of b1, b2.But, when resonance, because displacement is tried hard to recommend slow 90 ° of position phases with respect to adding to shake, so to right rotation the time, when secund cloth was positioned at bottom, tank 2 was moved to the left; When secund cloth was positioned at the top, tank 2 moved right.And downward direction produces power when being in the below owing to secund cloth, and tank 2 also moves down.Therefore, tank 2 direction+following direction left moves, and strong point P1, P2 move to the c1 shown in Fig. 2 (B), the position of c2.And on the contrary, because secund cloth is in when top upward to generation power, so tank 2 also moves up.Therefore, tank 2 moves to right+last direction, and strong point P1, P2 move to the d1 shown in Fig. 2 (B), the position of d2.About go forward side by side in the pattern as can be known, strong point P1, the P2 of suspension bracket moves between c1, the c2～d1 shown in Fig. 2 (B), d2.The action left side of suspension bracket 4L, 4R is more flexible greatly than the right side.Thereby, by improve the left side damper just direction of rotation become the fade performance of the damper of a downward side, the pattern of going forward side by side about can suppressing effectively.
Secondly, use Fig. 3 to study the pattern of going forward side by side up and down.Shown in Fig. 3 (A), tank 2 is when secund cloth is positioned at the top before resonance, and tank 2 utilizes its centrifugal force to move to the top of tank 2, and strong point P1, P2 move to the position of e1, e2.And on the contrary, when secund cloth was positioned at bottom, tank 2 moved downwards, and strong point P1, P2 move to the position of f1, f2.But, when resonance, because displacement is to trying hard to recommend slow 90 ° of position phases for adding to shake, so to anticlockwise the time, when secund cloth was positioned at the left side, tank 2 moved up; When secund cloth was positioned at the right, tank 2 moved down.And, the power of direction generation to the left and right when being in the left side or the right owing to secund cloth, tank 2 also moves to the left and right.As mentioned above because last low-resonance rotation number is 220r/min, about the go forward side by side resonance rotation number of pattern be 150r/min, so by about the go forward side by side resonance of pattern.For this reason, since left and right sides displacement to trying hard to recommend slow 180 ° of position phases, so when secund cloth was positioned at the left side, tank 2 moved right for adding to shake; When secund cloth was positioned at the right, tank 2 was moved to the left.Its result, the tank 2 when secund cloth is in the left side moves to+right upward, and strong point P1, P2 move to the g1 shown in Fig. 3 (B), the position of g2.And on the contrary, the tank 2 downward directions+left when secund cloth is in the right is to moving, and strong point P1, P2 move to the h1 shown in Fig. 3 (B), the position of h2.As can be known, strong point P1, the P2 of suspension bracket moves between g1, the g2～h1 shown in Fig. 3 (B), h2 in the pattern of going forward side by side up and down.About the action left side of suspension bracket 4L, 4R more flexible greatly than the right side.Thereby, by improve the left side damper just direction of rotation become the fade performance of the damper of a downward side, can suppress the pattern of going forward side by side up and down effectively.
At last, use Fig. 4 that rotary mode is studied.Before the resonance of rotary mode, tank 2 rotates shown in Fig. 4 (A) like that.Because the center of gravity of tank 2 is in than the pivot of sink 3 by transferring the place, so when secund cloth is positioned at the right, be subjected to the torsional forces that its centrifugal force forms, make tank 2 rotate to the right, strong point P1, P2 move to the position of i1, i2.And on the contrary, when secund cloth was positioned at the left side, tank 2 was to left side rotation, and strong point P1, P2 move to the position of j1, j2.But, in when resonance, because rotation is to postponing 90 ° of position phases for the torsional forces that applies, so during to anticlockwise, tank 2 was to right rotation when secund cloth was positioned at the top at sink 3; Tank 2 was to anticlockwise when secund cloth was positioned at bottom.And, since secund cloth is in the top or when following also up and down direction produce power, so also vibration up and down of tank 2.As mentioned above, because the resonance rotation number of rotary mode is 400～600r/min, the resonance rotation number of the pattern of going forward side by side up and down is 220r/min, so the resonance by the pattern of going forward side by side up and down.For this reason, because displacement is tried hard to recommend slow 180 ° of position phases with respect to adding to shake up and down, so when secund cloth was positioned at the top, tank 2 moved down; When secund cloth was positioned at bottom, tank 2 moved up.Its result, tank 2 moved to right rotation+following direction when secund cloth was in the top, and strong point P1, P2 move to the k1 shown in Fig. 4 (B), the position of k2.And on the contrary, tank 2 moved to anticlockwise+following direction when secund cloth was in bottom, and strong point P1, P2 move to the position of 11,12 shown in Fig. 4 (B).As can be known, strong point P1, the P2 of suspension bracket moves between k1, k2～11,12 shown in Fig. 4 (B) in rotary mode.About the action left side of suspension bracket 4L, 4R more flexible greatly than the right side.The big young pathbreaker of its vibration diminishes under the state at this rotary mode steadily the time.When steady, about suspension bracket 41,42 action its left side compare with the right side flexible for a short time.Thereby, by increase the left side damper just direction of rotation become the fade performance of the damper of a downward side, the transfer of vibration to the floor in the time of steadily also is difficult to increase.
Like this, by increasing direction of rotation and become the fade performance of the damper of a downward side, when suppressing steady in the time of the transfer of vibration on floor, the vibration of the tank 2 in the time of can reducing resonance.
Have again, above-mentioned attenuating device be at least by the cylinder body of interior dress liquid and therein the action bar and be installed in the hydraulic damper that the piston on the bar constitutes, it is characterized in that, on above-mentioned piston, have the hole, the area in the hole of the piston of the hydraulic damper of direction one side that the rotation when being configured in the dehydration of above-mentioned sink is downward is littler than the area in the hole of the piston of the hydraulic damper that is configured in direction one side upwards.
Perhaps, it is characterized in that, be the hydraulic damper of the downward side of rotation when only being configured in the dehydration of above-mentioned sink, can change fade performance, thereby can make its fade performance than the fade performance height of the attenuating device that is configured in a side that makes progress from the outside of its attenuating device
As mentioned above, the direction of rotation of the above-mentioned sink during dehydration is to the action of the attenuating device of next side, and when resonance, comparing with the action of the attenuating device of a side upwards becomes big.Therefore, if direction of rotation becomes to the fade performance of the attenuating device of next side than the fade performance height of the attenuating device of a side upwards, the vibration of the tank in the time of then can reducing resonance effectively.And, rotating at a high speed when steady, action to the attenuating device of next side, when resonance, comparing with the action of the attenuating device of a side upwards diminishes, so, even the fade performance height, the damping force that is produced also is difficult to increase, thereby can suppress the transfer of vibration to the outside of body of the washing machine.
Below, use Fig. 5～Figure 13 that embodiments of the invention are described.Fig. 5 is the side view of the inside of expression tumbling-box washing machine of the present invention.Fig. 6 is the front view of the inside of expression tumbling-box washing machine of the present invention.In addition, Fig. 7 is the spring of having represented to have made up the support tank, the suspension bracket outside drawing of damper.This invention is not limited to tumbling-box washing machine, also can be applicable to carry the drum-type washing drying machine of drying devices such as heater and fan.
There is the input port of washings front at the cabinet 1 of washing machine, and is provided with door 9.Take out or put into washings by shutter door 9.In addition, the inboard of cabinet 1 dispose make drop into oral-lateral be on from the tilt tank cylindraceous 2 of 0～30 ° and input port side opening of horizontal line.The input port is connected with the bellows 10 of tank 2 by undulatory rubber mass, in case take out or when putting into washings washings fall into cabinet 1.Rotatably be provided with the sink cylindraceous 3 that has a plurality of holes and an end opening in the inboard of tank 2.The bottom center of sink 3 links rotating shaft 11, and this rotating shaft 11 connects the bottom center of tank 2 with sealing of watertight ground and rotatable state.On the bottom surface, rear portion of tank 2, be fixed with flange 12, on this flange 12, be fixed with the motor 13 that rotation drives sink 3.And the rotating shaft 11 of sink 3 links with the rotating shaft of this motor 13.Like this, sink 3 utilization is arranged on motor 13 either party's rotation to the left and right tank 2 at the rear portion of tank 2, when sink 3 is rotated, washs, rinsing, dehydration.In addition, the vibration when dewatering in order to reduce is fixed with fluid balancer 14 in the front portion of sink 3.Fluid balancer 14 has added salt solution in the ring of hollow, salt solution concentrates on the secund opposition side of clothing class during dehydration, to eliminate the secund of clothing class, has the effect that reduces vibration.
Sink 3 and the tank 2 that motor 13 is installed are equipped with suspension bracket 4L, the 4R that stretches out to the bottom surface of cabinet 1 from its underpart.Suspension bracket 4L, 4R be in symmetrical position roughly, and be installed in 60 ° with interior scope with respect to the vertical line of tank 2. Suspension bracket 4L, 4R dispose spring 5L, 5R in the outside of damper 6L, 6R, and flexibly support tank 2.
In addition, the forward lower part at tank 2 is equipped with the hammer 15 that is used to obtain weight balancing.Therefore tank 2 is centered close to than the rotating shaft of the sink position by the below.
In addition, from using the rear, top of secondary spring 16 stretching tanks 2 near the central authorities of cabinet 1 upper interior, with the place ahead, top of secondary spring 17 stretching tanks 2.The spring constant of these secondary springs 16,17 is compared little with spring 5L, 5R on being arranged on above-mentioned damper 6L, 6R in the lump.In addition, the spring constant of secondary spring 16 is compared identical with the spring constant of secondary spring 17 or is called the spring constant of some greatly.And secondary spring 16 is longer than secondary spring 17.The position that the cabinet 1 of secondary spring 16,17 is installed is roughly the same position, but contacts with each other and stagger a little for fear of spring.
Have to water unit 18 on the top of cabinet 1, washing, admission port 19, water-supply valve 20, detergent box 21, the undulatory flexible pipe 22 on the top of employed water by being arranged on cabinet 1 are injected into tank 2 inside during rinsing.The draining valve 23 of the bottom of the water when washing in addition,, the water after the rinsing and dehydration by being arranged on tank 2 and scupper hose 24 and draining.
Fig. 7 represents the outward appearance of suspension bracket 4L, 4R.The upper end of damper 6L, 6R is installed on the metal base of being installed on the tank 2 25 by rubber bush 26.And similarly, the lower end is installed on the metal base of being installed on the bottom of cabinet 1 27 by rubber bush 26.The rubber bush 26 at two ends is clamped by packing ring 28 and is fastening with nut 29.Its compression is fastened to supports the degree that tank 2 rubber bush 26 also can not be out of shape significantly.In addition, on this damper 6R, 6L, be provided with spring 5L, 5R in the lump.Between the spring base 31 of spring 5L, 5R insertion support cylinder body 30 and the spring base 33 of support bar 32.Spring base 32 is the metals cylindraceous than cylinder body 30 big circles, and crooked to the inside also formation the in its lower end born the bottom surface of cylinder body 30, and has dried 32 holes of passing through.In addition, the upper end is opened wide laterally, accepts the upper end of spring 5L, 5R.Spring base 33 is the metal parts of shape that are provided with the similar dish of the such otch of insertion rod 32, and the lower end of bearing spring 5L, 5R coincide with the external diameter of spring 5L, 5R and the edge is erect with spring free 5L, 5R and laterally moved.
Fig. 8, Fig. 9 represent the profile of damper 6L, 6R.State when in addition, the damper of Figure 10 presentation graphs 9 vibrates significantly.In these figure, common parts are represented with same numeral., behind label, give and interpolation word L and R because of the different parts of left and right sides damper for style.L is the parts of left side damper, and R is the parts of right side damper.In cylinder body 30, add oil 34, but for bar 32 is entered, need not oil fill in the cylinder body 30 all but be provided with the space.In addition, the front end at bar 32 is fixed with the piston 35 roughly onesize with the internal diameter of cylinder body 30.This piston 35 has a plurality of apertures 36, and oil 34 passes through this aperture 36, thereby can motion in oil 34.If the area in this hole 36 is broad, then resistance is little, and piston 35 and bar 36 move swimmingly.In addition, if the area in this hole 36 is narrow and small, then resistance is big, the bradykinesia of piston 35 and bar 36.In addition, on bar 32, on the position of partition distance below the piston 35, be provided with edge 37.In addition, configuration valve 38 between piston 35 and edge 37.The diameter of this valve 38 is littler than piston 35, and is the discoid parts bigger than the position that is provided with hole 36.This valve 38 has the also bigger hole of diameter than the bar 32 between piston 35 and the edge 37 in central authorities, thereby can freely-movable between piston 35 and edge 37.As shown in figure 10, if valve 38 contact pistons 35, the then hole beyond the plugging hole 36.36 position radially is provided with grooving 39 in the hole in the bottom of piston 35, though valve 38 contact pistons 35, hole 36 match that also can not be blocked.Under this state, the area in oil 34 holes of passing through 36 is diminished, resistance increases, and easily produces bigger damping force, fade performance height.In addition, in order to relax as much as possible and the impact that causes conflicting of piston 35, wish that valve 38 usefulness resins make.
The damper 6R of this structure, the action of 6L inside are described.Being the state of Fig. 9 when piston 32 vibrates lessly, is that valve 38 is positioned at the below and leaves the state of piston 35.In this state, hole 36 is all opened wide, and it is big that the area in hole becomes, and resistance reduces, damping force reduce and fade performance low.
In addition, if the vibration of piston 35 increases, then damper is to the occasion of indentation direction action, and valve 38 touches edge 37, and hole 36 is in the state that all opens wide.In addition, damper is to the occasion of prolonging direction action, during the action beginning, valve 38 engagement edges 37, but along with moving up gradually with cylinder body 30 interior oil 34 and leaving edge 37, touch piston 35 as shown in Figure 10, become the state in plugging hole 36a hole 36 in addition.Thereby in the occasion of vibration significantly, only hole 36a opens wide, and resistance increases and is converted to high fade performance.Like this, be the damper that fade performance changes according to the size of vibrating.
This damper is installed about the bottom of tank 2, can be suppressed the vibration of tank 2.Supporting construction of the present invention make make this damper about the characteristic difference.In the present embodiment, the direction of rotation of the sink 3 during dehydration is directions of the arrow of Fig. 6, turns left from top view.In Fig. 8, represent the i.e. damper 6L in left side of damper that direction of rotation at that time becomes a downward side.In addition, the damper that the expression direction of rotation becomes a side upwards in Fig. 9 is the damper 6R on right side.Both sides are identical mechanism basically.But, set hole 36 differences on the piston 35 of decision fade performance.The number of the hole 36L of the damper 6L in left side is 4, and the number of the hole 36R of the damper 6R on right side is 5.In addition, with regard to empty 36 size, the hole 36L of the damper 6L in left side is littler than the hole 36R of the damper 6R on right side.Just, the area of the hole 36L of the piston 35 in left side is narrower and small than the area of the hole 36R of the piston 35 on right side.By making this structure, the fade performance of the damper 6L on the left of making is than the fade performance height of the damper 6R on right side.
In addition, the periphery of the piston 35 of the damper 6L in left side install with resin make with 40 to reduce the gap between piston 35 and the cylinder body 30.By making this structure, without just reducing from the circulation of the oil 34 of the periphery of piston 35 and improve fade performance in the hole 36 of piston 35.And the power of the inner face of pushing cylinder body 30 increases, and the frictional force of the action of piston 35 is also increased, thereby fade performance further improves.
In addition, make the left side damper 6L from piston 35 to the edge 37 distance L L than the damper 6R on right side 37 distance L R is short to the edge from piston 35.By making this structure, the interval of moving with low fade performance shortens, with high fade performance move interval elongated, thereby the complete attenuation performance uprises.
Use Figure 11 that the stroke of this damper 6L, 6R and the relation of damping force are described.Especially bigger to Oscillation Amplitude resonance state, specifically to 3～4Hz, ± characteristic of damper in the vibration of 6～10mm degree describes.In addition, solid line is the characteristic of left side damper 6L, and dotted line is represented the characteristic of the damper 6R on right side.Characteristic with the damper 6L in left side is that example describes.
Point A shown in Figure 11 is the state of damper indentation, and damping force rises gradually in the time of from the elongation of this state damper, change at B point damping force, and damping force begins rapid rising, becomes maximum at C point damping force.Damper further extends, but damping force reduces, and begins indentation at D point damper.From the D point, damping force reduces, and then produces reciprocal damping force, and at the E point, reciprocal damping force becomes maximum, and reciprocal then damping force reduces gradually and returns the A point.Like this, fade performance is that boundary transition is two sections with the B point.
Compare with the damper 6R on right side, the area in the hole 36 of the damper 6L in left side by reducing piston is also reeled and resinously is with 40, makes first section damping force (damping force of some B) become big.In addition, by shorten from piston 35 to the edge 37 distance, an A is approached, second section fade performance height and expanded range in the position of the some B of attenuation characteristic conversion.In addition, the area of the hole 36a by the piston that reduces not to be stopped up by valve 38, second section damping force (damping force of some C) also becomes big.Like this, because the damper 6L in left side produces damping force significantly, so the fade performance height.
In the dehydration direction of rotation is the occasion of turning left, and the fade performance of the damper 6L by making the left side is than the fade performance height of the damper 6R on right side, when suppressing to be delivered to when rotating at a high speed the power on the floor, and the vibration of the tank in the time of can suppressing to resonate.Figure 12, Figure 13 represent its pattern.The displacement of the tank when being delivered to the resonance of power on the floor and near the side-to-side vibrations pattern the 150r/min during high speed rotation when the fade performance of the damper about Figure 12 represents to make changes.The displacement of the tank when being delivered to the resonance of power on the floor and near the up-down vibration pattern the 220r/min during high speed rotation when Figure 13 similarly represents to make the fade performance of damper to change.No matter in which figure, solid line is the situation that the fade performance of the damper 6L in left side is changed, and dotted line is the situation that the fade performance of the damper 6R on right side is changed, and dotted line is only to make left and right sides both sides' damper 6L, the situation that 6R changes in the same manner.Basically be that the vibration when then resonating diminishes if improve fade performance, the power that is delivered on the floor rises.But the characteristic of wishing but is not allow the power on the floor of being delivered to rise and the characteristic of the vibration when reducing to resonate.Just, characteristic Figure 12 of this hope, Figure 13 relation under shown in the arrow all.All as can be known, the relation of the situation that the fade performance of the damper 6L on the left of making changes approaches desired characteristics in which figure of Figure 12, Figure 13.
Just, the vibration in order to suppress to resonate improves fade performance, if improve the fade performance of the damper 6L in left side, then the rising of the power that can transmit to the floor suppresses lessly.Otherwise if improve the fade performance of right side damper 6R, the power that then just suppresses to transmit to the floor rises, and it is very little that the vibration during resonance does not but become.Like this, in order to suppress the resonance of side-to-side vibrations pattern, up-down vibration pattern, the fade performance of the damper 6L on the left of wishing to strengthen.Thereby as described in present embodiment, the tumbling-box washing machine that the rotation of the sink when dewatering is relatively turned left is the vibration when just the fade performance by making left side damper 6L can suppress to resonate than the fade performance height of right side damper 6R effectively.
In addition, on the damper 6L in left side, also can not method with above-mentioned all raising fade performance.For example, only change the hole 36a that valve 38 of no use cuts out, and make the piston hole 36aL in left side little also more passable than the piston hole 36aR on right side.
In addition, the left and right sides damper of present embodiment is the damper with the size conversion fade performance of vibration, but also can be the damper that does not have edge 37, valve 38 and fade performance not to change.
In addition, only the damper of fade performance conversion is made in the left side so that when resonance, have bigger fade performance, and the right side make do not have edge 37, damper that valve 38 and fade performance are not changed is also passable.
Secondly, Figure 14 represents second embodiment.Basic structure is identical with first embodiment, supports the damper difference of tank.The damper of present embodiment, its left side is identical with first embodiment to be hydraulic damper, the right side is a friction damper.As shown in figure 14, this friction damper is assembled with bar 42, piston 43 with the state that moves up and down in cylinder body 41.Be wound with slide unit 44 around piston 43, this slide unit 44 is that urethane fat vacuole foam or rubber or felt etc. are made by the material also more soft than piston 43.The frictional force of the inner face of this slide unit 44 and cylinder body 41 plays attenuation.In addition, on slide unit 44 and cylinder body 41 inner faces, be coated with lubricating grease so that slide smoothly.In addition, be provided with little airport 45, on piston 43, also be provided with little airport 46 on cylinder body 41 tops.This is in order to prevent if the outer air of air and cylinder body in the cylinder body can not come and go, and then by the moving up and down of piston, the air in the cylinder body is compressed, expands, and has the bigger elastic reaction of air formation.In addition, air obtains attenuation by coming in and going out in little airport 45 and 46.This damper that plays attenuation by friction and air is set on the right side.
In addition, make the fade performance of hydraulic damper in left side than the fade performance height of the friction damper on right side.Especially make 3～4Hz to when resonance, ± damping force of the vibration of 6～10mm increases.
All the time, in order to reduce vibration left and right sides both sides' damper has been used the hydraulic damper of high price.But, as present embodiment, be friction damper for hydraulic damper, right side by making the left side, when reducing vibration, can make the hydraulic damper of high price be cheap friction damper, thereby reduce cost effectively.
In addition, the damper in the left side of present embodiment is the hydraulic damper with the size conversion fade performance of vibration, but also can be the hydraulic damper that does not have edge and valve and fade performance not to change.
In addition, the suspension bracket for the right side also has no relations even without fade performance.But if only with spring from the supported underneath tank, then because spring overturning beyond the flexible direction of spring itself, so, wish that employing produces the sort of friction damper according to the damping force of frictional force and air hardly in order to prevent overturning.
Secondly, Figure 15 represents the 3rd embodiment.Basic structure is identical with first embodiment, supports the damper difference of tank.The damper of present embodiment is that the right side is a hydraulic damper, and the left side is the variable shock absorber that can control the fade performance of damper from the outside of damper.The hydraulic damper on right side is identical with first embodiment.As shown in figure 15, above-mentioned variable shock absorber is provided with the space and adds magnetic fluid 49 so that bar 48 enters in cylinder body 47.So-called magnetic fluid 49 be make metallic as magnetic in liquid with high density dispersed solids and mixtures of liquids.The power that magnetic fluid 49 attracts the metallic that is magnetized according to the size in magnetic field each other changes and viscosity is changed.Front end at bar 48 is fixed with piston 50.Between the inner face of this piston 50 and cylinder body 47, has the gap.By making magnetic fluid 49 by this gap, piston 50 moves in magnetic fluid 49.If the viscosity of this magnetic fluid 49 is low, then resistance is little, and piston 50 and bar 48 move swimmingly, the fade performance step-down.Otherwise and if the viscosity height of this magnetic fluid 49, then resistance is big, and fade performance uprises.For the viscosity of controlling magnetic fluid 49 need make changes of magnetic field.In order to make changes of magnetic field, coil 51 is installed on piston 50.If flow on this coil 51 of electric current, then coil 51 around form magnetic field, thereby make the viscosity of magnetic fluid 49 uprise and fade performance uprises.The intensity in magnetic field changes according to the size of the electric current that flows in the coil 51, thereby can control fade performance.Loading is used for being flowing in the microcomputer 53 of size of variable shock absorber drive circuit, the indicator current of the electric current that coil 51 flows.Microcomputer 53 is based on the rotation number of sink and the vibratory output control electric current of tank.For this reason, has the vibration detection device 55 that the rotation number testing agency 54 of sink and being used to surveys the vibratory output of tank.The variation of the stroke of acceleration by detecting tank of vibration detection device 55, displacement, damper, the moment of torsion of motor etc. do not limit method especially.Variable shock absorber drive circuit 52 is based on the electric current of supplying with from power supply 56 from the control signal adjustment of microcomputer 53, and supply coil 51.This microcomputer 53 is also carried control signal to motor-drive circuit 57 in addition, adjusts electric current, voltage from power supply 58, and the rotation of control motor 13.In the present embodiment, though similarly with microcomputer 53 control variable shock absorber and motor rotation numbers,, also have no relations with other microcomputer respectively.The control of the variable shock absorber when Figure 16, Figure 17 represent dehydration that the microcomputer 53 of this structure carried out.Figure 16 is the control to the variable shock absorber of rotation number, and Figure 17 is the control to the variable shock absorber of the vibration of tank, when dehydration with the fixed time interval carry out Figure 16, as shown in Figure 17 the control of variable shock absorber.
The control of variable shock absorber to rotation number shown in Figure 16 is described.After the dehydration beginning, every official hour all begins damper control (S1) at interval.At first, detect the rotation number (S2) of sink.If rotation number is less than 80r/min (S3), then because before resonance zone, vibrate for a short time, needn't make decay powerful, institute is so that electric current disconnects or when current ratio is resonated little (S4).Finish damper control (S5) then.If rotation number surpasses 80r/min (S3), judge that then whether next rotation number is less than 450r/min (S6).If rotation number is less than 450r/min (S3), then because at resonance zone, it is big that vibrations are easy to become, institute is so that electric current is connected, and bigger electric current (S7) flows on coil 46.Finish damper control (S5) then.On the other hand, if rotation number surpasses 450r/min (S6), then because by resonance zone, vibrations diminish, institute is so that electric current disconnects or when making current ratio resonance little (S8).Finish damper control (S5) then.Just, microcomputer 48 is controlled to be, in the rotation number of sink be 80～450r/min tank resonance during, make electric current connect or become big and the bigger electric current that on coil 46, flows.Vibration when utilizing bigger electric current to improve fade performance and inhibition resonance.In addition, microcomputer 48 is controlled to be, and 0～80r/min beyond resonance rotation number scope, the rotation number scope more than the 450r/min disconnect electric current or little when making current ratio resonance, little electric current not at coil upper reaches streaming current or when flowing than resonance.Because the vibration of tank is little,, can prevent to transmit significantly the vibration of tank to the floor so fade performance reduces.
Secondly, the control of the variable shock absorber of vibratory output to tank shown in Figure 17 is described.After the dehydration beginning, every official hour all begins damper control (S11) at interval.Microcomputer 48 is controlled to be, and detects the vibratory output (S12) of tank, and in the little occasion (S13) of threshold value V0 that the vibratory output ratio of tank is stipulated, owing to needn't suppress vibration, institute is so that electric current disconnection or the less current that flows (S14).Finish damper control (S15) then.Otherwise be controlled to be, surpass the occasion (S13) of certain threshold value V0 at the vibratory output of tank, be judged as vibration and become big, institute is so that electric current is connected or mobile bigger electric current (S16).By doing like this, improve fade performance and suppress vibration.Have again, the vibratory output of tank and the threshold value V1 of regulation are compared (S17).If vibrate forr a short time, then under this state, finish damper control (S15) than V1.Otherwise it is big to be judged as abnormal vibration ground when bigger than V1 in vibration, carries out the control (S18) that makes rotation number descend or rotation is stopped with respect to motor-drive circuit, and finishes damper and control (S15).
Like this, by using variable shock absorber, can only improve fade performance when needed.In addition, it is big that the vibration of water jacket becomes, at that rate, and prediction vibration and can improve fade performance in advance, and can further prevent the increase vibrated.By its high fade performance being applied to the damper in left side, suppress the vibration of water jacket less effectively.And fade performance is reduced when not required, can further reduce transfer of vibration to the floor.
In the present embodiment, contain the control of with good grounds rotation number and, but also can be either party wherein according to the control both sides of vibratory output.
In addition, for the employed variable shock absorber in the left side of present embodiment, the fade performance on the coil of this variable shock absorber during streaming current is than the fade performance height of the hydraulic damper on right side.Especially to the 3～4Hz in when resonance, ± damping force of the vibration of 6～10mm increases.In addition, in the present embodiment, the hydraulic damper that the damper on right side has used fade performance to change according to the size of vibrating, but, owing to do not need bigger than the fade performance of the variable shock absorber in left side, so, be the indeclinable hydraulic damper of fade performance or friction damper all has no relations.In addition, in the present embodiment, the damper in left side has been to use the variable shock absorber of magnetic fluid, and still, if can adjust the fade performance of damper from the outside, then its method is not particularly limited.In addition, the left side damper of present embodiment changes by making fade performance, power to tank is changed indirectly and controls vibration, and is still, also passable by actively tank being produced the damper of the such device control vibration of the actuator of power.
Claims (4)
1. a tumbling-box washing machine comprises: be configured in the tank roughly cylindraceous in the Casing of washing machine; Constitute and support a plurality of tank supporting mechanisms of above-mentioned tank by elasticity maintaining body and attenuating device; Can be rotatably set in the above-mentioned tank and the sink of folding and unfolding washings; And rotation drives the motor of above-mentioned sink, it is characterized in that,
At least two above-mentioned tank supporting mechanisms are disposed at the bottom, left side and the lower right side of described tank in the mode of the rotating shaft that clips above-mentioned sink,
The damping capacity that the direction of rotation that is configured in above-mentioned sink of when dehydration is become to the attenuating device of the above-mentioned tank supporting mechanism of next side becomes the upwards damping capacity height of the attenuating device of other tank supporting mechanisms of a side than the direction of rotation that is configured in above-mentioned sink.
2. tumbling-box washing machine according to claim 1 is characterized in that,
Above-mentioned attenuating device is at least by the cylinder body and the bar that moves in above-mentioned cylinder body of interior dress liquid and be installed in the hydraulic damper that the piston on the above-mentioned bar constitutes, have the hole on above-mentioned piston, the area in hole of piston of hydraulic damper that the direction of rotation that is configured in the above-mentioned sink in when dehydration becomes a downward side is littler than the area in the hole of the piston that is configured in the hydraulic damper that becomes a side that makes progress.
3. tumbling-box washing machine according to claim 1 is characterized in that,
Above-mentioned attenuating device is the attenuating device that the above-mentioned sink direction of rotation when only being configured in dehydration becomes a downward side, can change fade performance from the outside of above-mentioned attenuating device, and the comparable fade performance that is configured in the attenuating device that becomes a side upwards of above-mentioned fade performance is higher.
4. tumbling-box washing machine according to claim 1 is characterized in that,
The direction of rotation of the above-mentioned sink when dehydration becomes a side upwards by not having fade performance or almost not having the attenuating device of fade performance and elasticity maintaining body to support.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007147611A JP4857197B2 (en) | 2007-06-04 | 2007-06-04 | Drum washing machine |
| JP2007-147611 | 2007-06-04 | ||
| JP2007147611 | 2007-06-04 |
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| Publication Number | Publication Date |
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| CN101319452A CN101319452A (en) | 2008-12-10 |
| CN101319452B true CN101319452B (en) | 2011-06-15 |
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| CN2008100040978A Active CN101319452B (en) | 2007-06-04 | 2008-01-24 | Drum type washing machine |
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| JP (1) | JP4857197B2 (en) |
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| JP5127740B2 (en) * | 2009-02-13 | 2013-01-23 | 株式会社東芝 | Washing machine |
| JP5106441B2 (en) * | 2009-02-19 | 2012-12-26 | 株式会社東芝 | Drum washing machine |
| JP5537071B2 (en) * | 2009-05-26 | 2014-07-02 | 株式会社東芝 | Drum washing machine |
| JP5748403B2 (en) * | 2009-11-16 | 2015-07-15 | 株式会社東芝 | Drum washing machine |
| JP5489102B2 (en) * | 2010-02-24 | 2014-05-14 | 株式会社東芝 | Drum washing machine |
| JP5127894B2 (en) * | 2010-06-03 | 2013-01-23 | 株式会社東芝 | Damper for washing machine |
| CN102770594B (en) * | 2010-02-24 | 2015-03-25 | 株式会社东芝 | Damper, washing machine, and washer/dryer |
| JP5624342B2 (en) * | 2010-03-15 | 2014-11-12 | 株式会社東芝 | Drum washing machine |
| KR101286819B1 (en) * | 2010-03-24 | 2013-07-22 | 가부시끼가이샤 도시바 | Washing machine |
| JP5468433B2 (en) * | 2010-03-24 | 2014-04-09 | 株式会社東芝 | Drum washing machine |
| JP5127873B2 (en) * | 2010-04-26 | 2013-01-23 | 株式会社東芝 | Drum washing machine |
| JP5641839B2 (en) * | 2010-04-26 | 2014-12-17 | 株式会社東芝 | Drum washing machine |
| CN102884237B (en) | 2010-05-06 | 2015-06-17 | 株式会社东芝 | Washing machine |
| JP5127879B2 (en) * | 2010-05-21 | 2013-01-23 | 株式会社東芝 | Damper for washing machine |
| JP5508948B2 (en) * | 2010-06-17 | 2014-06-04 | 株式会社東芝 | Washing machine |
| JP5127892B2 (en) * | 2010-07-28 | 2013-01-23 | 株式会社東芝 | Washing machine |
| JP5330343B2 (en) * | 2010-09-03 | 2013-10-30 | 株式会社東芝 | Washing machine |
| JP5570931B2 (en) * | 2010-09-29 | 2014-08-13 | 株式会社東芝 | Washing machine |
| JP5630734B2 (en) * | 2010-10-18 | 2014-11-26 | 株式会社東芝 | Washing machine |
| JP5127909B2 (en) * | 2010-11-17 | 2013-01-23 | 株式会社東芝 | Suspension and washing machine |
| EP2557217B1 (en) * | 2011-02-23 | 2014-06-11 | Panasonic Corporation | Drum-type washing machine |
| JP5851111B2 (en) * | 2011-04-22 | 2016-02-03 | 株式会社東芝 | Drum washing machine |
| JP5639979B2 (en) * | 2011-09-28 | 2014-12-10 | 日立アプライアンス株式会社 | Drum type washer / dryer |
| JP6223655B2 (en) * | 2011-11-29 | 2017-11-01 | 東芝ライフスタイル株式会社 | Drum washing machine |
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| DE102012207977A1 (en) * | 2012-05-14 | 2013-11-14 | BSH Bosch und Siemens Hausgeräte GmbH | Laundry appliance |
| JP6034115B2 (en) * | 2012-09-28 | 2016-11-30 | 東芝ライフスタイル株式会社 | Drum washing machine |
| KR101285827B1 (en) | 2012-10-15 | 2013-07-16 | 주식회사 다옴텍 | Damper |
| JP6446185B2 (en) * | 2014-06-13 | 2018-12-26 | 日立アプライアンス株式会社 | Drum type washer / dryer |
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| JP2008295906A (en) | 2008-12-11 |
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Address after: Tokyo, Japan, Japan Patentee after: Hitachi Global Living Program Co., Ltd. Address before: Tokyo, Japan, Japan Patentee before: Hitachi Household Electric Appliance Co. |