KR100480097B1 - Direct drive type automatic washing machine - Google Patents

Abstract

The present invention relates to a direct type washing machine, the present invention provides a pulsator capable of relative rotation with respect to the washing tank in the inside of the washing tank, the drive shaft and the pulsator rotating shaft coupled to the rotor of the washing motor coupled to the gear type, A first outer tooth portion and a second outer tooth portion are formed on the drive shaft and the washing tank rotating shaft, respectively, and the driving shaft is lifted by a rotatable coupling lifting lever by engaging the at least one of the outer tooth teeth with the rotating shaft and the pulsator. By coupling to the rotating shaft, it is possible to form a variety of washing water flow to improve the washing effect of the fabric, as well as to reduce the damage of the fabric and load of the electric motor.

Description

Direct Drive Washing Machine {DIRECT DRIVE TYPE AUTOMATIC WASHING MACHINE}

 The present invention relates to a direct type washing machine, and more particularly, to a direct type washing machine capable of increasing the washing efficiency by varying the washing function and reducing the load of the washing motor.

In general, a washing machine is classified into a clutch connection method and a direct connection method according to a power transmission method. The clutch connection type washing machine transfers the power generated from the washing motor to the pulsator using the clutch, while the direct connection type washing machine (hereinafter, referred to as a direct type washing machine) directly connects the washing motor and the washing tank. The washing tank is rotated directly by the power of the washing motor.

1 is a longitudinal sectional view schematically showing an example of a conventional direct-type washing machine.

As shown in the drawing, the conventional direct type washing machine includes an outer tub 3 elastically supported by the support rod 2 in the casing 1 and a washing tub 4 provided in the outer tub 3 to store laundry. And an outer side of the outer tub 3 so as to directly couple the pulsator 5 provided on the bottom surface of the washing tub 4 to form a washing stream, and the motor shaft 6a directly at the center of the bottom surface of the pulsator 5. It consists of a washing motor 6 etc. which are provided in a center part.

In the conventional direct connection type washing machine as described above, the washing motor 6 rotates the washing tank 4 directly during washing and dehydrating operation to wash or dehydrate the laundry while generating strong water current.

However, since the washing tank 4 and the pulsator 5 rotate together regardless of the kind and quantity of the laundry, the conventional direct-type washing machine as described above, when the amount of washing and the amount of washing are relatively small, By sticking to the washing tank 4 by the centrifugal force and rotating in the same direction, washing of the cloth is insufficient, as well as the load of the washing motor 6 is increased, thereby increasing the power consumption.

Accordingly, an object of the present invention is to conceive in view of the problems that a direct type washing machine has, and to provide a direct type washing machine which can increase the washing efficiency by reducing the washing function and reduce the load of the washing motor. There is a purpose.

In order to achieve the object of the present invention, in the housing space in the casing to accommodate the wash water therein, the washing tank rotatably accommodated in the inside of the outer tank to accommodate the laundry, and to rotate relative to the washing tank A pulsator accommodated in the washing tank to form washing water, a washing motor mounted on the bottom of the outer tank to generate rotational force, and a first outer tooth portion having one end fixedly coupled to the rotor of the washing motor. The drive shaft assembly for transmitting the rotational force of the motor to the washing tank or pulsator, the washing tank rotating shaft having a second outer tooth and formed into a hollow body, one end of which is fixed to the washing tank and inserted into the washing tank rotating shaft, the one end of which is fixed to the pulsator Pulsator rotating shaft and drive shaft assembly are coupled to the washing tank rotating shaft and pulsator rotating shaft by gear type An axial direction of the washing motor rotating shaft having a rotating shaft connecting portion for transmitting the rotational force to the washing tank rotating shaft and the pulsator rotating shaft, and an inner tooth engaging with at least one of the first outer tooth and the second outer tooth. A coupling for coupling movably along the shaft, a coupling lifting lever for pivoting the coupling in an axial direction while rotating about the rotation shaft provided on one side, and a coupling lifting lever connected to the coupling lifting lever Or it provides a direct type washing machine including a lifting lever driving means for causing the coupling lifting lever to rotate about the rotating shaft.

It is also provided in a housing space in the casing to accommodate the wash water therein, a washing tank rotatably received in the inside of the outer tank to accommodate the laundry, and accommodated inside the washing tank so as to be able to rotate relative to the washing tank A washing machine or pulsator having a pulsator for forming the water flow, a washing motor mounted on the bottom of the outer tub to generate a rotational force, and a first outer tooth portion having one end fixedly coupled to the rotor of the washing motor. A washing shaft rotating shaft having a drive shaft assembly to be transmitted to the data, a second outer tooth portion formed in a hollow body, and having one end fixedly coupled to the washing tank, a pulsator rotating shaft inserted into the washing tank rotating shaft and fixed at one end thereof to the pulsator; The drive shaft assembly is connected to the washing tank rotating shaft and the pulsator rotating shaft by gear type, and the washing tank rotating shaft described above the rotational force of the washing motor. And a rotation shaft connecting portion to be transmitted to the pulsator rotation shaft, and an inner tooth portion engaged with at least one outer tooth portion among the first outer tooth portion and the second outer tooth portion to move along the axial direction of the washing motor rotation shaft. Coupling to engage, Coupling lifting lever for raising and lowering the coupling in the axial direction while rotating around the rotating shaft provided on one side, Coupling lifting lever connected to the coupling lifting lever to pull or push the coupling lifting lever Lifting lever driving means for rotating the lever around the rotation shaft, draining motor controlled together with lifting lever driving means for adjusting the washing water inside the outer tank by adjusting it to the bottom of the outer tank, and the control state of the draining motor. Brake assembly and the braid assembly for connecting to the rotating shaft of the draining motor wrapped around the rotating shaft of the washing tank to control whether the washing tank is rotated accordingly Provides a direct-coupled type washing machine, it characterized in that the binding to the brake assembly so as to interlock the assembly includes a drain valve assembly for holding or drain the wash water in the washing tank in response to a control state of the drain motor.

Hereinafter, the washing machine according to the present invention will be described in detail based on the embodiment shown in the accompanying drawings.

Figure 2 is a longitudinal sectional view showing an example of the present invention of the direct connection type washing machine, Figure 3 is a longitudinal sectional view showing the main part of the present invention direct connection type washing machine, Figure 4 is a coupling and coupling to the coupling of the present invention direct connection type washing machine 5 is an exploded perspective view of each component, and FIG. 5 is a perspective view of the outer tub and the components coupled thereto of the present invention.

As shown in the drawing, the washing machine according to the present invention includes a casing 11 having a tubular shape, and an outer tub 13 supporting suspension by a support rod 12 in the casing 11 to accommodate washing water therein. And a washing tub 14 rotatably housed in the outer tub 13, a pulsator 15 rotatably mounted to allow relative movement to the bottom surface of the washing tub 14, and an outer tub 13. It is coupled to the washing motor 16, which is mounted on the bottom and generates rotational force, and the rotor 16B of the washing motor 16, and transmits the rotational force of the washing motor 16 to the washing tank 14 or the pulsator 15. Drive shaft assembly 17, washing tub rotating shaft 18 fixedly coupled to washing tub 14, and pulsator rotating shaft 19 inserted into washing tub rotating shaft 18 and fixedly coupled to pulsator 15. ), The drive shaft assembly 17 is connected to the washing tank rotation shaft 18 and the pulsator rotation shaft 19 in a geared manner of the washing motor 16 Rotating shaft connecting portion 20 which transmits electric power to the washing tank rotating shaft 18 and the pulsator rotating shaft 19 and the washing tank rotating shaft 18 or the pulsator rotating shaft while being movable along the axial direction of the drive shaft assembly 17. 19, a coupling elevating lever 32 for raising and lowering the coupling 31 in the axial direction while rotating about the rotation shaft 32a provided on one side, and a coupling elevating lever ( 32) the lifting lever driving portion 33 and the lower surface of the outer tub 13 to pull or push the coupling lifting lever 32 so that the coupling lifting lever 32 rotates about the pivot shaft 32a. Whether the washing tank 14 is rotated according to the control state of the drainage motor 41 and the drainage motor 41 to control the lifting lever driving unit 33 to adjust the wash water in the tub 13 inside the tub 13. Connected to the brake assembly 42 and the brake assembly 42 according to the control state of the drainage motor 41. D) a drain valve assembly 43 for maintaining or draining the washing water of the washing tub 14.

The casing 11 is formed in a tubular shape which is opened upwardly so that laundry can enter and exit, and the casing 11 is suspended and supported by the supporting rod 12 in the casing 11. The tub 13 is formed in a cylindrical shape inside the outer tub 13 and rotatably provided with a washing tub 14 formed with a plurality of dehydration holes (not shown) on the main wall thereof, and washing water flows on the inner bottom surface of the tub 14. The pulsator 15 to be formed is coupled to the washing tub 14 so as to be capable of relative rotation.

An upper bearing housing 51 having an almost disk shape is coupled to the bottom of the outer tub 13, and a lower bearing housing 52 is fixedly coupled to the bottom of the upper bearing housing 51. At the center of the upper bearing housing 51 and the lower bearing housing 52, the upper bearing 51a and the lower bearing 52a are coupled to each other so as to support rotation of the washing tub rotating shaft 18.

The washing motor 16 may use a conventional induction motor or a brushless DC motor as shown in FIG. 2 or 3, but the rotor 16B is preferably the drive shaft assembly 17. It is preferable to be configured to be coupled directly to the washing tank 14 or the pulsator 15 through the), and the rotor 16B so that the rotating shaft connecting portion 20 to be described later can be located inside the washing motor 16 It is more preferable in terms of space utilization that is configured by a so-called outer rotor method in which the outside is located outside the stator 16A.

The drive shaft assembly 17 is fixedly coupled to the center of the rotor bracket 17A and the rotor bracket 17A fixedly coupled to the rotor 16B of the washing motor 16, as shown in FIG. The rotor bushing 17B for forming the first outer toothed portion 17b on the outer circumferential surface thereof, the rotary bush 22 of the rotary shaft connecting portion 20 to be described later on the other end by forcibly engaging one end to the rotor bushing 17B, and It consists of the drive shaft 17C which forms the gear part 17c so that it may engage.

The washing tub rotating shaft 18 is formed of a hollow member to accommodate the pulsator rotating shaft 19 therein as shown in FIG. 3 and fixedly coupled to the bottom surface of the washing tub 14, and has a predetermined length in the axial direction on the outer peripheral surface of the lower end thereof. A second outer tooth portion 18b having a predetermined height in the radial direction is formed to protrude in the same size and shape as the first outer tooth portion 17b described above.

In addition, the washing tub rotating shaft 18 forms an expansion portion 18A so as to accommodate the rotating shaft connecting portion 20 in the middle portion thereof, and the pivoting gear of the rotating shaft connecting portion 20 is formed on the inner circumferential surface of the expanding portion 18A. 22) The gear part 18c is formed so that it may engage with an outer side.

Further, the washing tub rotating shaft 18 is accommodated and coupled to the upper and lower portions so that the drive shaft 17C and the pulsator rotating shaft 19 can rotate relative to each other via a pair of oilless bearings (unsigned) therein.

The pulsator rotating shaft 19 is formed longer than the washing tank rotating shaft 18 as shown in Figure 3, the upper end is fixedly coupled to the pulsator 15, while the lower end is in the swing gear housing 21 of the rotary shaft connecting portion 20 Fix it tightly.

The rotary shaft connecting portion 20 is pivotally eccentrically coupled to one side of the pivoting gear housing 21 and the pivoting gear housing 21 in which the center is mounted on the upper end of the drive shaft 17C so as to allow relative movement. On the inner outer peripheral surface, the gear part 17c of the drive shaft 17C engages, whereas the outer outer peripheral surface consists of the turning gear 22 which the gear part 18c of the washing tub rotating shaft 18 meshes with.

The coupling 31 is formed in an annular shape to have an inner diameter and a predetermined height that can be coupled to the rotor bushing 17B of the drive shaft assembly 17 or the outer side of the washing tub rotating shaft 18 as shown in FIG. 3 or 4. It consists of a coupling body 31A and a coupling flange 31B extending radially on the upper end of the coupling body 31A and mounted on the coupling elevating lever 32.

On the inner circumferential surface of the coupling body 31A, an inner tooth portion 31b is formed so as to be engaged with the first outer tooth portion 17b and the second outer tooth portion 18b together or with each other, and a coupling flange ( 31B) is engaged with the anti-rotation groove 53a of the rotation shaft receiving bracket 53 which is fixedly coupled to the outer tub 13 together with the lower bearing housing 52 when the coupling 31 is raised. A plurality of anti-rotation protrusions 31a are formed to prevent rotation. The rotation shaft bearing bracket 53 may be formed by a plurality of couplings, and may be formed of an insulator so that a current applied to the stator 16A of the washing motor is not transmitted to the neighboring member.

In addition, between the upper surface of the coupling flange 31B and the lower surface of the rotation bearing shaft bracket 53 or the lower surface of the lower bearing housing 52, the compression type first to return to the original position when the coupling 31 is lowered It is preferable to interpose the spring 61.

Coupling lifting lever 32 is formed in the "L" shaped cross-sectional shape having a horizontal portion 32A and a vertical portion 32B in front projection as shown in Fig. 3 or 4, the horizontal portion 32A coupling The bottom surface of the flange 31B is formed in an arc shape so that it may raise. In addition, in the lower half of the vertical portion 32B, the coupling lifting lever 32 is inserted into a separate fixing member (not shown), and the pivot shafts 32a are formed on both sides so as to be rotated about the center thereof. In addition, the upper end of the vertical part 32B is coupled to the lifting lever driving part 33 to form a hook groove 32b to receive the driving force of the lifting lever driving part 33.

In the middle of the vertical portion 32B of the coupling elevating lever 32, a spring hook groove 32c for attaching the tension type second spring 62 to pull the coupling elevating lever 32 to return to its original position is formed. do.

The lifting lever driving part 33 is fixedly coupled to the bottom surface of the outer tub 13 so that the rotating shaft is eccentrically rotated by the lifting lever driving motor 33A and the connecting lever rotatably coupled to the rotating shaft of the lifting lever driving motor 33A. (33B), the frame housing (33C) to overlap the one end of the connecting frame 33B to be coupled to the end of the coupling elevating lever 32, and the other end so that the connecting frame (33B) can be relatively linear movement Inserting the frame cap 33D to be coupled to the frame housing 33C and the connecting frame 33B and the frame housing 33C, and both ends are supported by the connecting frame 33B and the frame cap 33D, respectively. Compression-type third spring 33E which prevents the coupling lift lever 32 from deforming while compressing when the rotation preventing projection 31a and the rotation preventing groove 53b do not match when the coupling 31 is raised. Is done.

At one end of the frame housing 33C, a hook protrusion 33a is formed to be inserted into the hook groove 32b provided in the vertical portion 32B of the coupling lift lever 32.

5, when the first stage power is applied as shown in FIG. 5, the drain valve assembly 43 is closed and only the brake assembly 42 is released to wash the water in the outer tank 13, and the washing tank 14 and the pulsator ( 15) rotates together to perform the through-stroke, while applying two-stage power, open the drain valve assembly (43), release the brake assembly (42), and remove the wash water from the outer tub (13) while washing the tub (14) and pulsing. It consists of a two-stage motor that rotates the eater 15 together to effect dehydration, but in some cases, when power is applied, the drain valve assembly 43 is opened and the brake assembly 42 is released to wash the water. It may be made of a single-stage motor to rotate the washing tank 14 and the pulsator 15 together to perform the dehydration stroke while removing from).

The brake assembly 42 has a brake lever 42A coupled to the rotary shaft of the drain motor 41 and a brake lever 42A coupled to the brake lever 42A to enclose the extended portion 18A of the washing tub rotation shaft 18. It consists of a band (not shown).

The drain valve assembly 43 is mounted to a drain port (not shown) of the outer tub 13 as shown in FIG. 5 to couple the opening / closing part (not shown) to the brake lever 42A.

The present invention direct type washing machine as described above operates as follows.

That is, when water is supplied to the inside of the washing tank 14, the lifting lever driving motor 33A is turned off, the self-weight of the coupling 31 and the restoring force of the compression type first spring 61 and the coupling lifting and lowering. The coupling lifting lever 32 rotates counterclockwise in the drawing by the restoring force of the tension-type second spring 62 holding the lever 32. As a result, the coupling 31 descends and the coupling The inner toothed portion 31b of 31 is engaged with the first outer toothed portion 17b and the second outer toothed portion 18b together. At this time, the drain motor 41 is also turned off (OFF), the brake assembly 42 is locked and closes the drain valve assembly 43 in a state where the brake band (not shown) grabs the washing tank rotating shaft 18 to supply water.

Next, when the degree of contamination of the laundry is severe or when the quantity is small, pulsating washing is performed. In this case, the draining motor 41 is kept off while the lifting lever driving motor 33A is on. The coupling elevating lever 32 is pulled by the elevating lever driving motor 33A to lift the coupling 31 while rotating about the pivot shaft 32a, which causes the coupling 31 to move to the first outside value. The laundry is washed by transmitting the high speed rotational force of the rotor 16B only to the pulsator rotating shaft 19 while being spaced apart from the mold portion 17b to form a strong water flow while the pulsator 15 rotates at a high speed inside the washing tank 14. do. At this time, as the drive shaft 17C for transmitting the rotational force is also connected to the washing tank rotating shaft 18 by the turning gear 22, the rotational force of the rotor 16B is also transmitted to the washing tank rotating shaft 18, and the washing tank rotating shaft 18 is The brake assembly 42 may be rotated together to win, but the inner tooth portion 31b of the coupling 31 is engaged with the second outer tooth portion 18b of the washing tank rotating shaft 18 and the washing tank rotating shaft 18 The anti-rotation protrusion 31a meshes with the anti-rotation groove 53a of the rotation shaft receiving bracket 53 to eventually prevent rotation of the washing tub rotation shaft 18. At this time, the brake assembly 42 is locked, and the drain valve assembly 43 is also closed.

Here, when the rotation preventing projection 31a and the rotation preventing groove 53a are not correctly engaged, the coupling lifting lever 32 may be deformed, but the compression type third spring 33E provided at the lifting lever driving part 33 is used. ) Is prevented from deforming of the above-mentioned coupling lifting lever 32 while being pushed by the frame housing 33C which retreats.

Next, when the degree of contamination of the laundry is low or the quantity is large, or when the laundry is relatively weak in textile material, or when the laundry is to be washed with pore to remove the kink of the cloth, washing is performed. In this case, the drain motor 41 is switched to the ON state of the first stage (ON) and the lifting lever driving motor 33A is turned off so that the drain valve assembly 43 is kept closed and only the brake assembly 42 is released. In addition, the coupling 31 is lowered again so that the inner tooth portion 31b of the coupling 31 meshes the first outer tooth portion 17b and the second outer tooth portion 18b together as described above. By transmitting the rotational force of the electron 16B to the washing tank rotating shaft 18, while the washing tank rotating shaft 18 and the pulsator rotating shaft 19 rotate together, the washing tank 14 and the pulsator 15 are rotated together.

Next, when dehydration is performed, the drain valve assembly 43 is opened while the brake assembly 42 is released by applying a two-stage power source to the drain motor 41. At this time, the lifting lever driving motor 33A remains in the off state, but the power to the washing motor 16 is turned off, and the coupling 31 stops while engaging the drive shaft 17C and the washing tank rotating shaft 18. Accordingly, the washing water filled in the outer tank 13 is discharged to the outside through the drain valve assembly 43, and when the discharge is completed, power is applied to the washing motor 16 so that the washing tank 14 and the pulsator 15 are discharged. Dehydrate the laundry while rotating together.

On the other hand, if there is another embodiment according to the present invention.

That is, in the above-described embodiment, the anti-rotation protrusion 31a and the anti-rotation groove 53a are formed on the upper surface of the flange 31B of the coupling 31 and the corresponding rotation shaft receiving bracket 53 to form a pulsator. The anti-rotation protrusion 31a is engaged with the anti-rotation groove 53a during the stroke, so that the coupling 31 prevents the rotation of the washing tub 14, but this embodiment has the anti-rotation protrusion as shown in FIG. 31a) and the anti-rotation groove 53a may be removed so that the washing tank 14 also rotates together with the pulsator 15 in the opposite direction during the pulsing stroke, so that the so-called loop washing may be performed.

As described above, the direct type washing machine according to the present invention has a pulsator capable of relative rotation with respect to the washing tank inside the washing tank, and combines the drive shaft and the pulsator rotating shaft coupled to the rotor of the washing motor in a gear type. A first outer tooth portion and a second outer tooth portion are formed on the drive shaft and the washing tank rotating shaft, respectively, and the driving shaft is lifted by a rotatable coupling lifting lever by engaging the at least one of the outer tooth teeth with the rotating shaft and the pulsator. By coupling to the rotating shaft, it is possible to form a variety of washing water flow to improve the washing effect of the fabric, as well as to reduce the damage of the fabric and load of the electric motor.

1 is a longitudinal sectional view showing an example of a conventional clutch connection type washing machine.

Figure 2 is a longitudinal sectional view showing an example of the present invention direct connection type washing machine.

Figure 3 is a longitudinal sectional view showing the main part of the present invention direct connection type washing machine.

Figure 4 is a perspective view showing an exploded view of each component coupled to the coupling of the present invention direct connection type washing machine.

Figure 5 is a perspective view of the outer shell and each component coupled thereto of the present invention direct connection type washing machine viewed from the back.

6 and 7 are longitudinal cross-sectional view showing each operation of the coupling in the present invention direct connection type washing machine.

Figure 8 is a longitudinal sectional view showing the main part of another embodiment of the present invention the direct connection type washing machine.

** Description of symbols for the main parts of the drawing **

11: casing 12: support rod

13: outer tank 14: washing tank

15: pulsator 16: washing motor

16A: Stator 16B: Rotor

17: drive shaft assembly 17A: rotor bracket

17B: rotor bushing 17b: first outer tooth part

17C: drive shaft 17c: gear part

18: washing tub rotating shaft 18A: extension

18b: second outer tooth portion 18c: gear portion

19: pulsator rotation shaft 20: rotation shaft connection portion

21: Slewing Gear Housing 22: Slewing Gear

31: coupling 31A: coupling body

31B: coupling flange 31a: anti-rotation protrusion

31b: inner tooth 32: coupling elevating lever

32a: Rotating shaft 32b: Hanging groove

32c: spring hook groove 33: elevating lever drive unit

33A: Lifting lever drive motor 33B: Connecting frame

33C: Frame Housing 33D: Frame Cap

33E: Compression type third spring 41: Drainage motor

42: brake assembly 43: drain valve assembly

51,52: Upper and lower bearing housing 53: Rotating shaft bracket

53a: Anti-rotation groove 61: Compression type first spring

62: tension type second spring

Claims (9)

An outer tub provided in the accommodating space in the casing to accommodate the wash water therein, a washing tank rotatably received in the outer tank to store the laundry, and accommodated in the washing tank so as to be able to rotate relative to the washing tank. A pulsator forming a spool, a washing motor mounted on the bottom of the outer tub and generating a rotational force, and having a first outer tooth portion and having one end fixedly coupled to the rotor of the washing motor, thereby rotating the washing force of the washing motor to the washing tub or pulsator. A drive shaft assembly to be transmitted, a washing tank rotating shaft having a second outer tooth portion formed in a hollow body and fixedly coupled to a washing tank, a pulsator rotating shaft inserted into the washing tank rotating shaft and fixed at one end thereof to a pulsator, and a drive shaft assembly. Is connected to the washing tank rotating shaft and the pulsator rotating shaft, and the rotational force of the washing motor is Couple coupled to the axial movement of the washing motor rotation axis having a rotating shaft connecting portion for transmitting to the shaft and the inner teeth engaging with at least one of the outer tooth portion of the first outer tooth portion and the second outer tooth portion. A ring, a coupling lift lever for elevating the coupling in an axial direction while rotating about a rotation shaft provided on one side, a lift lever drive motor disposed on one side of the coupling and having a rotation shaft eccentrically rotated, and a lift lever drive motor. Connecting frame rotatably coupled to the rotation axis of the frame, frame housing for coupling to the coupling lifting lever by overlapping to receive one end of the connecting frame, and the frame housing by inserting the other end so that the connecting frame can be relatively linear movement Insert the frame cap into the outer circumferential surface of the connecting frame and support both ends of the frame cap and the frame cap respectively. Direct-coupled type washing machine, including a resilient means for preventing coupling the lifting lever is modified. An outer tub provided in the accommodating space in the casing to accommodate the wash water therein, a washing tank rotatably received in the outer tank to store the laundry, and accommodated in the washing tank so as to be able to rotate relative to the washing tank. A pulsator forming a spool, a washing motor mounted on the bottom of the outer tub and generating a rotational force, and having a first outer tooth portion and having one end fixedly coupled to the rotor of the washing motor, thereby rotating the washing force of the washing motor to the washing tub or pulsator. A drive shaft assembly to be transmitted, a washing tank rotating shaft having a second outer tooth portion formed in a hollow body and fixedly coupled to a washing tank, a pulsator rotating shaft inserted into the washing tank rotating shaft and fixed at one end thereof to a pulsator, and a drive shaft assembly. Is connected to the washing tank rotating shaft and the pulsator rotating shaft, and the rotational force of the washing motor is Couple coupled to the axial movement of the washing motor rotation axis having a rotating shaft connecting portion for transmitting to the shaft and the inner teeth engaging with at least one of the outer tooth portion of the first outer tooth portion and the second outer tooth portion. The ring, the coupling lifting lever for rotating the coupling in the axial direction while rotating about the rotation shaft provided on one side, and the coupling lifting lever connected to the coupling lifting lever to pull or push the coupling lifting lever. Lifting lever driving means for rotating around the coaxial, Draining motor mounted on the bottom of the outer tank and controlled with the lifting lever driving means for adjusting the washing water in the outer tank, and the washing tank according to the control state of the draining motor A brake assembly that is connected to the rotating shaft of the drainage motor wrapped around the washing tank rotating shaft so as to control the rotation, and linked to the brake assembly In the direct-type washing machine characterized in that it comprises a drain valve assembly coupled to the brake assembly to maintain or drain the washing water in the washing tank according to the control state of the drain motor, When the first stage power is applied to the drainage motor, the drain valve assembly is closed and only the brake assembly is released, washing water is kept in the outer tank and the washing tank and the pulsator are rotated together. Direct-type washing machine characterized in that the two-stage motor to open the brake assembly and remove the wash water from the outer tank while rotating the washing tank and the pulsator together to perform the dehydration stroke. The method according to claim 1 or 2, The washing tank rotating shaft and the pulsator rotating shaft are accommodated together, and the rotating shaft bearing bracket is fixedly coupled to the bottom of the outer tub so as to be located on the upper side of the coupling. Direct washing machine to prevent the rotation of the washing tank rotation shaft by engaging the rotation prevention projection and the rotation prevention groove when the coupling rises by forming a plurality of prevention grooves. The method of claim 3, And a resilient means for returning the coupling to the initial position between the rotating shaft bearing bracket and the coupling. The method of claim 3, The rotating shaft bearing bracket is formed of an insulator, and the direct outer washing machine, characterized in that the bottom outer periphery is fixed to the stator of the washing motor. delete The method of claim 1, Between the forming part of the rotating shaft provided on the coupling elevating lever and the engaging portion combined with the second connecting frame, the coupling elevating lever is pulled back to the original position so that the other end is coupled to the coupling elevating lever. Direct-type washing machine characterized in that it further comprises an elastic means for coupling to the fixture. delete delete