JPH10201982A - Pulsator for electric washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain strong and weak water flow suitable for the kind and quantity of washing by providing a rotation transmitting means for controlling the transmission of rotation of a main driving pulsator to a driven pulsator according to the magnitude of washing load corresponding to the weight of washing in a washing bucket. SOLUTION: When the quantity of washing thrown in a washing bucket is small, a driven pulsator 7 is raised along an engagement element 4d by buoyancy of water according to water filling. When a driving shaft 3 is rotated, the engagement of a rotating lock rib 7h and a rotating lock projection 4h is released by rising of the driven pulsator 7 so that only the driving pulsator 4 is rotated, and washing is stirred by weak water flow. On the other hand, when the quantity of washing is large, the driven pulsator 7 is lowered against buoyancy by the weight of washing so that the rotating lock rib 7h is engaged with the rotating lock projection 4h. As a result, the rotation of the driving pulsator 4 is transmitted to the driven pulsator 7 to be rotated with the driving pulsator 4, whereby washing is stirred by a strong water flow.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulsator for an electric washing machine.

[0002]

2. Description of the Related Art A conventional pulsator device of an electric washing machine includes:
As shown in FIG. 6, a drive shaft 33 is protruded into the washing tub 31 from a bearing holder 32 provided at the center of the bottom of the washing tub 31, and a pulsator 34 is screwed onto an upper end of the driving shaft 33 with a fixing screw 34. It has become. The bearing holder 32 has a built-in speed reduction mechanism connected to a drive motor (not shown), and transmits the driving force of the drive motor to the drive shaft 33 via the speed reduction mechanism to rotate the pulsator 34. It has become.

[0003]

In the pulsator apparatus of the electric washing machine having the above-described structure, strong, medium and weak water flows are selected by operating a changeover switch in accordance with the type and amount of the laundry, and washing is easily performed. ing. The adjustment of the water flow is performed by controlling the power supply to the drive motor and the cutoff time by operating the changeover switch. However, especially in recent electric washing machines, a so-called short-time reversal chart that repeats energization and cut-off for an extremely short time even in a strong water flow, in order to reduce damage to clothes, has become mainstream. Since there is not much difference in time control between the strong water flow and the weak water flow reversal chart,
There was a problem that a water flow suitable for the type and amount of laundry could not be obtained.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the conventional pulsator apparatus of the electric washing machine, and the pulsator of the electric washing machine according to the first aspect of the present invention. The apparatus comprises: a drive shaft protruding into the washing tub from the bottom of the washing tub and rotating by receiving a driving force of a driving motor; a driving pulsator fixed to the driving shaft at a central portion;
A washing load corresponding to the weight of the laundry put into the washing tub between the driving pulsator and the driven pulsator, comprising a driven pulsator supported on the driving pulsator so as to be rotatable coaxially with the driving pulsator. Rotation transmission means for controlling transmission of rotation of the driven pulsator to the driven pulsator according to the magnitude of the load is provided.

According to the above construction, when the amount of laundry is large, the rotation of the driven pulsator is transmitted to the driven pulsator by the action of the rotation transmitting means, and the driven pulsator is rotated together with the driven pulsator to generate a strong water flow. Wash the laundry with strong force. If the amount of the laundry is small, the transmission of the rotational force of the driving pulsator to the driven pulsator is canceled by the operation of the rotation transmitting means, and only the driving pulsator is rotated to create a weak water flow to wash the laundry with a weak force. I do.

[0006] Further, by combining with the control of the rotational force of the pulsator, which has been performed in the pulsator apparatus of the conventional electric washing machine, it is possible to create more strong and weak water flow. As a result, it is possible to provide a pulsator apparatus capable of obtaining a strong and weak water flow suitable for the type and amount of the laundry.

According to a second aspect of the present invention, there is provided a pulsator for an electric washing machine according to the first aspect of the present invention, wherein a diameter of the driven pulsator is 1/4 or less of that of the main pulsator. It is characterized by being set to 1/2. According to the above configuration, the diameter of the driven pulsator is set to １ ／ to の of that of the driven pulsator, so that the independent rotation of the driven pulsator and the joint rotation of the driven pulsator allow the water flow according to the amount of laundry to be generated. Can be produced. As a result, it is possible to provide a pulsator apparatus capable of obtaining a strong and weak water flow suitable for the type and amount of the laundry.

According to a third aspect of the present invention, there is provided a pulsator for an electric washing machine according to the first aspect of the present invention, wherein the shape between the blades of the driving pulsator and the driven pulsator is provided. Is substantially V-shaped. According to the above configuration, the laundry does not clog between the blades of the driven pulsator and the driven pulsator. As a result, it is possible to provide a pulsator device for an electric washing machine that does not damage laundry.

According to a fourth aspect of the present invention, there is provided a pulsator apparatus for an electric washing machine, wherein the drive shaft protrudes into the washing tub from the bottom surface of the washing tub and rotates by receiving the driving force of the driving motor; Driving pulsator fixed at the fitting part of the part,
A driven pulsator made of a material having a smaller specific gravity than water supported on the driven pulsator and coaxially rotatable with the driven pulsator and capable of moving up and down, and rotating the driven pulsator when the driven pulsator is at a lowered position. A rotation transmitting means for transmitting the rotation to the driven pulsator, wherein the driven pulsator moves up and down depending on the magnitude of the washing load corresponding to the weight of the laundry put into the washing tub, and the position where the washing load is large and descends. In this case, the driving force of the driving pulsator is received via the rotation transmitting means when the driving pulsator is rotated.

According to this configuration, when the amount of laundry is large, the driven pulsator automatically takes the lowered position, so that the rotational force of the driving pulsator is transmitted to the driven pulsator by the operation of the rotation transmitting means, and the rotation of the driven pulsator is transmitted to the driven pulsator. The driven pulsator is rotated together with the driven pulsator to create a strong water flow and wash the laundry with a strong force. If the amount of laundry is small,
Since the driven pulsator automatically takes the raised position, the rotation of the driving pulsator to the driven pulsator is canceled by the operation of the rotation transmitting means, and only the driven pulsator is rotated to create a weak water flow. Wash with weak force.

Further, by combining the control with the control of the rotational force of the pulsator, which has been performed in the pulsator device of the conventional electric washing machine, it is possible to generate more strong and weak water flow. As a result, it is possible to provide a pulsator apparatus capable of obtaining a strong and weak water flow suitable for the type and amount of the laundry.

According to a fifth aspect of the present invention, there is provided a pulsator apparatus for an electric washing machine, wherein the drive shaft projects from the bottom of the washing tub into the washing tub, and rotates by receiving a driving force of a driving motor;
A driving pulsator fixed to the drive shaft at a central fitting portion, a driven pulsator supported on the driving pulsator so as to be rotatable coaxially with the driving pulsator and capable of moving up and down, and the driven pulsator being lowered And a rotation transmitting means for transmitting the rotation of the driving pulsator to the driven pulsator when in the position, wherein the driven pulsator has a space for storing air and has a washing load corresponding to the weight of the laundry put into the washing tub. It is characterized in that it moves up and down according to the magnitude of the load and receives the rotational force of the driving pulsator via the rotation transmitting means and rotates together with the driving pulsator when the washing load is at a lowered position.

According to this configuration, if the amount of the laundry is large, the driven pulsator automatically takes a lowered position against the air stored in the space. The rotational force is transmitted to the driven pulsator, and the driven pulsator is rotated together with the driven pulsator to create a strong water flow and wash the laundry with a strong force. Also, if the amount of laundry is small, the driven pulsator automatically takes a position that has risen due to the accumulated air in the space, so the transmission of the rotational force of the driven pulsator to the driven pulsator is released by the action of the rotation transmitting means. Then, only the driving pulsator is rotated to create a weak water flow and wash the laundry with a weak force.

[0014] Further, by combining with the control of the pulsator rotational force, which has been performed in the pulsator apparatus of the conventional electric washing machine, it is possible to create more strong and weak water flow. As a result, it is possible to provide a pulsator apparatus capable of obtaining a strong and weak water flow suitable for the type and amount of the laundry.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION

[Configuration] FIG. 1 is a sectional view of a lower portion of a washing tub in an electric washing machine having a pulsator apparatus according to the present invention.
Shows a plan view thereof. In these figures, reference numeral 1 denotes a washing tub, to which a bearing holder 2 is fixed on the bottom lower surface. The bearing holder transmits a driving force of a driving motor (not shown) to a driving shaft 3 protruding into the washing tub 1 via a built-in speed reducing mechanism (not shown) to rotate the shaft. .

Reference numeral 4 denotes a driving pulsator.
A fitting portion 4a formed of a central cylindrical body fixed with screws 6 while being fitted to the middle portion via a spacer 5, and formed to extend outward from the fitting portion 4a by a diameter, and Step 4
c, four blades 4d formed at equal intervals on the upper surface of the disk portion 4b, and the step portion 4c
It is composed of four ribs 4e formed radially from the fitting portion 4a on the upper surface of the disk portion 4b on the inner side with a larger diameter and arranged at equal intervals to each other.

The driving pulsator 4 further includes:
A plurality of engaging elements 4f having a retaining claw 4g at the tip are formed to protrude from the periphery of the upper end of the fitting portion 4a. Reference numeral 7 denotes a driven pulsator formed by injection molding a synthetic resin material having a specific gravity lower than that of water such as polypropylene, and a small diameter portion 7c at the lower end so as to form a contact step 7b in the middle.
An engaging cylinder 7a rotatably and vertically movably fitted to the engaging element 4d of the driving pulsator 4 with a small-diameter portion 7c formed of a stepped cylindrical body having an upper end portion and a large-diameter portion 7d; A disk portion 7e extending outward from the upper end of the cylindrical body 7a in a diameter direction and formed with a gradual downward slope;
And five blades 7f formed at equally spaced positions on the upper surface of the blade.

In the driven pulsator 7, the peripheral edge 7g of the disk portion 7e is connected to the disk portion 4 of the driven pulsator 4.
b is fitted with a gap into a step portion 4c provided in the middle abdomen,
The upper surface of the driving pulsator 4 can be rotated independently of the driving pulsator. In addition, the driven pulsator 7 is driven by the driven pulsator 4 with the small-diameter portion 7c of the engagement cylinder 7.
Are fitted so as to be able to move up and down along the engaging element 4d.
The range in which it can move up and down is between the dimensions h1 as shown in FIG. 3, and in the lowered state, the lower end of the small diameter portion 7c and the peripheral edge 7g of the disk portion 7e are connected to the ribs 4 of the driving pulsator 4.
In the state in which the contact step e is raised, the contact step 7b is engaged with the retaining claw 4g of the engaging element 4d to prevent the engaging element 4d from coming off from the engaging element 4d.

Reference numeral 4h denotes a rotation lock projection projecting from the disk 4b near the step 4c inward of the step 4c.
The rotation pulsator 7h and the rotation lock rib 7h provided on the lower surface of the disk portion 7e of the driven pulsator 7 constitute rotation transmission means. By engaging and disengaging the rotation lock rib 7h, only the main pulsator 4 or the main pulsator 4 is driven. And both the driven pulsator 7 and the driven pulsator 7 rotate.

The engagement margin h2 (shown in FIG. 4) of the rotation lock projection 4h with the rotation lock rib 7h is smaller than the distance h1 of the driven pulsator 7 moving up and down. The rotation lock rib 7h does not engage with the rotation lock protrusion 4h when in the raised position engaged with the rotation lock projection 4h. Accordingly, when the driven pulsator 7 is lifted by the buoyancy of water and is in the raised position where the stepped portion 7b is engaged with the retaining claw 4g, the rotation lock rib 7h does not engage with the rotation lock projection 4h. Only the driving pulsator rotates without receiving the rotational force of the pulsator 4.

The shape of the blade 7f of the driven pulsator 7 is such that the shape of the space between the driven pulsator 4 and the blade 4d of the driven pulsator 4 is V-shaped as shown in FIG. This is to prevent the laundry from being clogged between the two blades 4d and 7f.

The blade 7f is connected to the blade 4 as shown in FIG.
When a small amount of laundry is put into the washing tub 1 filled with water, the driven pulsator 7 positioned above the driving pulsator 4 is formed.
First, the weight of the laundry is applied. Further, when the laundry is put in, the driven pulsator 7 moves the maximum distance h by its weight.
It is pushed down by one.

Thus, the engagement of the rotation lock rib 7h and the rotation lock protrusion 4h is automatically determined according to the size of the laundry. That is, when the amount of laundry is small, the descending of the driven pulsator 7 is small, and the rotation lock rib 7h does not engage with the rotation lock projection 4h, and only the driving pulsator 4 rotates. On the other hand, when the amount of laundry is large, the driven pulsator 7 is lowered by the distance h1, the rotation lock rib 7h is engaged with the rotation lock projection 4h, and the driven pulsator 7 is also rotated according to the rotation of the driven pulsator 4.

At this time, the engagement between the rotation lock rib 7h and the rotation lock projection 4h is made at one place in the circumferential direction of both pulsators, so that when the driven pulsator 7 rotates in response to the driven pulsator, the driven pulsator 7 moves at most. The rotation starts about one rotation less than the pulsator 4. Thereafter, it rotates at the same cycle as the driving pulsator. By the staggered start of the driven pulsator 7 with respect to the driven pulsator 4, the laundry is twisted between the two pulsators, and the washing effect is obtained by hand-washing, thereby increasing the washing power. 4i
Is a drain hole formed on the surface of the disk portion 4b at a position inside the diameter of the step portion 4c.

Numeral 8 is a cap which is fixed to the upper end of the engaging cylinder 7 to close the upper opening of the engaging cylinder 7, and the lower end of the cylindrical portion 8a provided on the lower surface is engaged with the engaging element 4d. Hanging downward. The gap w1 between the cylindrical portion 8a and the engagement element 4d is formed smaller than the width w2 of the retaining claw 4g as shown in FIG. This is because even if the engaging element 4d is deformed to fall inward in diameter, the engaging element 4d abuts on the cylindrical portion 8a, the deformation is prevented, and the driven pulsator 7 is prevented from coming off from the driven pulsator 4. it can.

In the present invention, the outer diameter (diameter) of the main pulsator is the same as the pulsator of a conventional electric washing machine, and the outer diameter of the driven pulsator is 1/4 to 1/2. By setting the range, it is configured to correspond to each class of electric washing machine.

[Operation] The present invention is configured as described above, and its operation will be described below. Washing tub 1
In a state where no laundry is put in and no water is applied, the driven pulsator 7 descends along the engagement element 4d by its own weight. In such a non-use state, when washing is performed, when washing (not shown) is put into the washing tub 1 and water injection is started, the water is driven by the driving pulsator 4.
Begins to collect gradually from the bottom of the washing tub 1 below the
As the water level rises, a part of the water enters the space between the driving pulsator 4 and the driven pulsator 7 through the perforations 4i,... Of the disk portion 4b of the driving pulsator 4 and the gap between the driven pulsator 4 and the driven pulsator 7.

At this time, when the amount of the laundry is small, the driven pulsator 7 causes the engaging element
Start to rise along d. The buoyancy of the driven pulsator 7 is determined by the fact that the water that has entered between the driven pulsator 4 and the driven pulsator 7 seals the air accumulated in the blades 7f, which are hollow 7i as shown in FIG. Further, the driven pulsator 7 rises successfully. Then, in a state where the amount of laundry is small, when water is poured to a predetermined water level, a water level detector (not shown) operates to close the water supply valve, and in conjunction with this, the drive motor starts to be energized and Drive the drive motor.

By the drive of the drive motor, the rotation is transmitted to the reduction mechanism in the bearing holder 2 via the belt and the pulley, and the drive shaft 3 is rotated. At this time, since the engagement between the rotation lock rib 7h and the rotation lock protrusion 4h is released by the rise of the driven pulsator 7, only the driven pulsator 4 is rotated by the rotation of the drive shaft 3, and the laundry is washed with a weak water flow. Stir.

On the other hand, if the amount of the laundry is large, the buoyancy acts on the driven pulsator 7, but the driven pulsator 7 is lowered against the buoyancy by the weight of the laundry, and the rotation lock rib 7h is rotated. It engages with the projection 4h. As a result, the rotation of the driving pulsator 4 due to the rotation of the drive shaft 3 is transmitted to the driven pulsator 7 via the rotation lock rib 7h and the rotation lock projection 4h, and the driven pulsator 7 rotates together with the driving pulsator 4, and the strong Is stirred.

At this time, since the rotation lock projection 4h and the rotation lock rib 7h are provided at one place on the circumference of the driving pulsator 4 and the driven pulsator 7, respectively, the driven pulsator 7 associated with the engagement of the two. The rotation starts with a delay of a little less than a maximum of one rotation from the rotation start of the driving pulsator 4,
By the time difference start of the rotation start of the driven pulsator 7,
The twisting of the laundry occurs between the driving pulsator 4 and the driven pulsator 7, and the laundry is given a hand-washing effect. The above-mentioned perforations 4i,... Serve to allow water to enter between the driving pulsator 4 and the driven pulsator 7 when water is injected as described above. It plays a role in discharging garbage and lint into the space.

[0032]

According to the present invention, the pulsator apparatus for an electric washing machine according to the first aspect of the present invention has a drive motor that projects from the bottom of the washing tub into the washing tub. A driving shaft that rotates by receiving a driving force, a driving pulsator fixed to the driving shaft at a central portion, and a driven pulsator supported on the driving pulsator so as to be rotatable coaxially with the driving pulsator. A structure in which a rotation transmitting means is provided between the driven pulsator and the driven pulsator to control the transmission of the rotation of the driven pulsator to the driven pulsator according to the magnitude of the washing load according to the weight of the laundry put into the washing tub. It is.

According to the present invention, when the amount of the laundry is large, the rotation of the driven pulsator is transmitted to the driven pulsator by the action of the rotation transmitting means, and the driven pulsator is rotated together with the driven pulsator to create a strong water flow, thereby producing a strong water flow. Wash things with strong power. If the amount of the laundry is small, the transmission of the rotational force of the driving pulsator to the driven pulsator is canceled by the operation of the rotation transmitting means, and only the driving pulsator is rotated to create a weak water flow to wash the laundry with a weak force. I do.

Further, by combining with the control of the pulsator's rotational force, which has been performed in the pulsator apparatus of the conventional electric washing machine, it is possible to create more strong and weak water flow. Therefore, it is possible to provide a pulsator apparatus capable of obtaining a strong and weak water flow suitable for the type and amount of the laundry.

According to a second aspect of the present invention, there is provided a pulsator for an electric washing machine according to the first aspect of the present invention, wherein the diameter of the driven pulsator is 1/4 to that of the main pulsator. The structure is set to 1/2. According to the present invention, since the diameter of the driven pulsator is set to ４ to の of the diameter of the driven pulsator, the independent rotation of the driven pulsator and the joint rotation of the driven pulsator create a water flow according to the amount of laundry. It is possible,
It is possible to provide a pulsator apparatus capable of obtaining a strong and weak water flow suitable for the type and amount of laundry.

According to a third aspect of the present invention, there is provided a pulsator for an electric washing machine according to the first aspect of the present invention, wherein the shape of the pulsator between the main pulsator and the driven pulsator is provided. Is substantially V-shaped. According to the present invention, laundry is not clogged between the blades of the driven pulsator and the driven pulsator,
It is possible to provide a pulsator device of an electric washing machine that can wash laundry without damaging the laundry.

According to a fourth aspect of the present invention, there is provided a pulsator apparatus for an electric washing machine, wherein the drive shaft projects from the bottom of the washing tub into the washing tub, and rotates by receiving a driving force of a driving motor;
A driving pulsator fixed to the driving shaft at a central fitting portion, and a driven pulsator made of a material having a specific gravity smaller than that of water supported on the driving pulsator coaxially with the driving pulsator and capable of moving up and down. And rotation transmission means for transmitting the rotation of the main pulsator to the driven pulsator when the driven pulsator is at the lowered position. The driven pulsator is a washing machine according to the weight of the laundry put into the washing tub. The structure is such that it moves up and down according to the magnitude of the applied load, and receives the rotational force of the driven pulsator via the rotation transmitting means and rotates with the driven pulsator when the washing load is at a lowered position.

According to the present invention, when the amount of laundry is large, the driven pulsator automatically takes the lowered position, so that the rotational force of the driving pulsator is transmitted to the driven pulsator by the action of the rotation transmitting means. The driven pulsator is rotated together with the driven pulsator to create a strong water flow and wash the laundry with a strong force.

If the amount of laundry is small, the driven pulsator automatically takes the raised position, so that the transmission of the rotational force of the driven pulsator to the driven pulsator is released by the action of the rotation transmitting means, and the driven pulsator is released. Rotate only to create a weak current and wash the laundry with a weak force.

Further, by combining with the control of the rotational force of the pulsator, which has been performed in the pulsator apparatus of the conventional electric washing machine, it is possible to create more strong and weak water flow. Therefore, it is possible to provide a pulsator apparatus capable of obtaining a strong and weak water flow suitable for the type and amount of the laundry.

According to a fifth aspect of the present invention, there is provided a pulsator apparatus for an electric washing machine, comprising: a drive shaft projecting into the washing tub from a bottom surface of the washing tub and rotating by receiving a driving force of a driving motor;
A driving pulsator fixed to the drive shaft at a central fitting portion, a driven pulsator supported on the driving pulsator so as to be rotatable coaxially with the driving pulsator and capable of moving up and down, and the driven pulsator being lowered And a rotation transmitting means for transmitting the rotation of the driving pulsator to the driven pulsator when in the position, wherein the driven pulsator has a space for storing air and has a washing load corresponding to the weight of the laundry put into the washing tub. The structure is such that it moves up and down depending on the magnitude of the load and receives the rotational force of the driving pulsator via the rotation transmitting means and rotates with the driving pulsator when the washing load is at a lowered position.

According to the present invention, when the amount of laundry is large, the driven pulsator automatically takes a lowered position against the accumulated air in the space. The rotational force is transmitted to the driven pulsator, and the driven pulsator is rotated together with the driven pulsator to create a strong water flow and wash the laundry with a strong force.

If the amount of laundry is small, the driven pulsator automatically assumes a position where the driven pulsator has risen due to the air stored in the space. Therefore, the rotation of the driven pulsator is transmitted to the driven pulsator by the action of the rotation transmitting means. Is released and only the driving pulsator is rotated to create a weak water flow and wash the laundry with a weak force.

Further, by combining with the control of the rotational force of the pulsator, which has been performed in the pulsator apparatus of the conventional electric washing machine, it is possible to create more strong and weak water flow. Therefore, it is possible to provide a pulsator apparatus capable of obtaining a strong and weak water flow suitable for the type and amount of the laundry.

[Brief description of the drawings]

FIG. 1 is a plan view showing a main part of an electric washing machine having an embodiment of a pulsator apparatus according to the present invention.

FIG. 2 is a cross-sectional view of FIG. 1 taken along a line indicated by arrows A1-A2.

FIG. 3 is an enlarged view showing a relationship between an engaging element of a driving pulsator and an engaging cylinder of a driven pulsator of the pulsator apparatus of the electric washing machine according to the present invention.

FIG. 4 is an enlarged view showing a relationship between a rotation lock projection of a driving pulsator and a rotation lock rib of a driven pulsator of the pulsator device of the electric washing machine according to the present invention.

FIG. 5 is an enlarged sectional view of a blade portion of the driven pulsator.

FIG. 6 is a diagram illustrating a pulsator device of a conventional electric washing machine.

[Explanation of symbols]

 Reference Signs List 1 washing tub 3 drive shaft 4 main pulsator 4d blade 4f engagement element 7 driven pulsator 7a engagement cylinder 7f blade

Claims (5)

[Claims] A drive shaft protruding from the bottom of the washing tub into the washing tub and rotating by receiving a driving force of a driving motor; a driving pulsator fixed to the driving shaft at a central portion; A driven pulsator supported so as to be rotatable coaxially with the driven pulsator, wherein the driven pulsator is driven by the magnitude of the washing load according to the weight of the laundry put into the washing tub between the driven pulsator and the driven pulsator. A pulsator apparatus for an electric washing machine, comprising means for controlling transmission of rotation of a driving pulsator to a pulsator. 2. The pulsator of an electric washing machine according to claim 1, wherein the diameter of the driven pulsator is set to １ ／ to の of the diameter of the driven pulsator. 3. The pulsator apparatus for an electric washing machine according to claim 1, wherein the shape between the blades of the driven pulsator and the driven pulsator is substantially V-shaped. 4. A drive shaft protruding into the washing tub from the bottom surface of the washing tub and rotating by receiving a driving force of a driving motor; a driving pulsator fixed to the driving shaft at a center fitting portion; Can be coaxially rotated with the driving pulsator on the pulsator,
And a driven pulsator made of a material having a smaller specific gravity than water supported so as to be able to move up and down, and rotation transmitting means for transmitting the rotation of the driven pulsator to the driven pulsator when the driven pulsator is at a lowered position. The driven pulsator moves up and down according to the magnitude of the washing load according to the weight of the laundry put into the washing tub, and when the washing load is large and descends, the driven pulsator is driven by the driving pulsator via the rotation transmitting means. A pulsator device for an electric washing machine, wherein the pulsator device is configured to rotate with the driving pulsator by receiving a rotating force. 5. A drive shaft protruding into the washing tub from a bottom surface of the washing tub and rotating by receiving a driving force of a driving motor, a driving pulsator fixed to the driving shaft at a center fitting portion, Can be coaxially rotated with the driving pulsator on the pulsator,
And a driven pulsator supported to be able to move up and down,
When the driven pulsator is in the lowered position, the rotation pulsator transmits rotation of the driven pulsator to the driven pulsator, and the driven pulsator has a space for storing air. It is configured to move up and down depending on the magnitude of the washing load according to the weight, and receive the rotational force of the driving pulsator via the rotation transmitting means and rotate together with the driving pulsator when the washing load is large and at the lowered position. A pulsator device of an electric washing machine characterized by the following.