KR100400571B1 - Direct drive washing machine - Google Patents

Abstract

The present invention relates to a direct type washing machine, comprising: a casing forming an accommodation space therein; A tub accommodated in the casing to accommodate washing water therein; A spin basket rotatably received in the tub; A spin basket rotating shaft formed of a hollow body and having a first outer tooth portion formed on an outer surface of one end portion; A laundry flow forming member which is accommodated in the spin basket so as to be rotated relative to the spin basket to form a laundry flow; Washing water flow formation in which the second outer tooth portion is formed to correspond to the first outer tooth portion in an end region exposed to the outside of the spin basket rotation shaft to be relatively rotatably coupled to the inside of the spin basket rotating shaft. A member rotating shaft; A clutch member having an inner tooth portion engaged with at least one of the first outer tooth portion and the second outer tooth portion on an inner surface thereof and movably coupled along an axial direction of the spin basket rotation shaft; A clutch lifting lever member disposed rotatably around a rotation shaft provided at one side and having at least one region in contact with a lower side of the clutch member; It characterized in that it comprises a lever rotation drive means for rotating the clutch lifting lever member. As a result, a direct washing machine is provided that enables the formation of various washing water streams, thereby improving the washing effect of the fabric, as well as reducing damage to the fabric and the load of the electric motor.

Description

Direct Drive Washing Machine {DIRECT DRIVE WASHING MACHINE}

The present invention relates to a direct-type washing machine, and more particularly, it is possible to improve the washing effect of the fabric by enabling the formation of a variety of washing water, as well as to reduce the damage of the fabric and load of the electric motor. It relates to a direct type washing machine.

1 is a longitudinal sectional view of a conventional direct type washing machine. As illustrated, the direct type washing machine includes a casing 101 having an upwardly open tubular shape, a tub 103 that is suspended on the inside of the casing 101 to accommodate washing water therein, and a tub 103. It is coupled to a cylindrical spin basket (105) rotatably received in the interior of the spin basket 105, and coupled to the rotating shaft of the spin basket (105) coupled downwardly extending from the bottom region of the spin basket (105) to rotate and drive the spin basket (105). The motor 109 is provided.

In the inner bottom region of the spin basket 105, a washing water flow forming member 107 called a pulsator or edge data is rotatably formed so as to form washing water flow.

By the way, in such a conventional direct-type washing machine, the washing water flow forming member 107 and the spin basket 105 are rotated integrally regardless of the kind and quantity of washing water, so that the amount of water and washing water When relatively small, the fabric is rotated in the same direction as the spin basket 105 during the rotation of the spin basket 105 has a problem that the washing of the fabric is insufficient. Accordingly, even when the amount is relatively small, it is not possible to reduce the number of washes, thereby increasing the amount of wash water and detergent used.

In addition, in the conventional direct-type washing machine, the inertia of the spin basket 105 is relatively inertial relative to a pulsator or agitator that is installed to be rotatable relative to the spin basket 105 to form a water stream. Inertia is designed to reversely rotate the large spin basket 105, thereby increasing the load of the electric motor 109 and hindering driving efficiency.

Accordingly, it is an object of the present invention to provide a direct washing machine that enables not only to improve the washing effect of the fabric by allowing the formation of various washing water flows, but also to reduce the damage of the fabric and the load of the electric motor.

1 is a longitudinal sectional view of a conventional direct type washing machine,

2 is a longitudinal sectional view of a direct type washing machine according to an embodiment of the present invention;

3 is an enlarged view illustrating main parts of FIG. 2;

4 is a partial exploded perspective view of FIG. 2;

5 and 6 are views for explaining the operation of the clutch member of FIG.

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

11: casing 13: tub

15: spin basket 19: spin basket rotation axis

20: first outer teeth 21: washing water flow forming member

23: washing water flow forming member rotating shaft 24: outer teeth

31 clutch member 32 inner toothed portion

33: protrusion 35: clutch lifting lever member

38: return spring 39: recessed accommodation

41: lever bracket 43: lever drive motor

44: drive pulley 46: wire

49: upper bearing housing 50: lower bearing housing

51: electric motor 53: rotor

54: rotor bushing 57: serration bushing

58b: second outer tooth portion 59: stator

According to the present invention, the object and the casing to form a receiving space therein; A tub accommodated in the casing to accommodate washing water therein; A spin basket rotatably received in the tub; A spin basket rotating shaft formed of a hollow body and having one end rotatably coupled to the spin basket and having a first outer tooth portion formed on an outer surface of one end thereof; A laundry flow forming member which is accommodated in the spin basket so as to be rotated relative to the spin basket to form a laundry flow; It has an extended length compared to the spin basket rotary shaft and one end is rotatably coupled to the washing water flow forming member and is mutually concentrically coupled to the inside of the spin basket rotary shaft to be relatively rotatable, A washing water flow forming member rotating shaft having a second outer tooth portion formed in an end region exposed to the outside to correspond to the first outer tooth portion; A clutch member having an inner tooth portion engaged with at least one of the first outer tooth portion and the second outer tooth portion on an inner surface thereof and movably coupled along an axial direction of the spin basket rotation shaft; A clutch lift lever member disposed rotatably around a rotation shaft provided on one side, the at least one region being in contact with a lower side of the clutch member to rotate about the rotation shaft to move the clutch member in an axial direction; It is achieved by a direct type washing machine comprising a lever rotation drive means for rotating the clutch lifting lever member.

Here, the lever rotation driving means, a lever driving motor disposed on one side of the clutch member, a pulley rotatably coupled to the rotation axis of the lever driving motor, and one end is wound along the circumferential direction of the pulley The other end preferably includes a wire connected to the clutch lift lever member.

The lever rotation driving means may further include an elastic means for applying the elastic force to at least one of the clutch lifting lever member and the clutch member to return the clutch lifting lever member to the initial position.

In addition, it is preferable to further include a clutch rotation inhibiting means for suppressing the rotation of the clutch member.

The clutch rotation inhibiting means includes a plurality of protrusions protruding in an up-down direction and spaced apart in a circumferential direction on an upper end of the clutch member, and receiving the protrusions when the clutch member is raised to the circumferential direction of the clutch member. It is effective to include recesses that are engaged with irregularities.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

Figure 2 is a longitudinal sectional view of a direct type washing machine according to an embodiment of the present invention, Figure 3 is an enlarged view of the main part of Figure 2, Figure 4 is a partial perspective view of Figure 2, Figures 5 and 6 are respectively FIG. Is a view for explaining the operation of the clutch member. As shown in these figures, the direct-type washing machine includes a casing 11 having a tubular shape, a tub 13 suspended from the inside of the casing 11 to accommodate washing water therein, and a tub 13. Spin basket 15 that is rotatably housed inside the spin basket, a spin basket rotating shaft 19 for supporting the spin basket 15 in rotation, and a relative rotation with respect to the spin basket 15 inside the spin basket 15. Washing water flow forming member 21 that can be accommodated to form a water flow, one end of the washing water flow forming member 21 is rotatably coupled to the washing water flow forming member 21 and extended downward, washing An electric motor 51 having a rotor 53 which is integrally rotatably coupled to the lower end of the water flow forming member 21 and capable of lifting up and down around the spin basket rotating shaft 19 and the washing water flow forming member rotating shaft 23. The lower side of the clutch member 31 and the clutch member 31 arranged concentrically It is rotatably coupled is constituted by a lever pivoting drive unit 40 for the clutch lever, the lifting member 35 to lift the clutch member 31, rotational driving the lifting lever, the clutch member 35.

The casing 11 has a tubular shape which is opened upwardly to allow the laundry to enter and exit, and the tub 13 is suspended and supported by the support rod 12 inside the casing 11. The inside of the tub 13 has a cylindrical shape and a spin basket 15 rotatably provided with a plurality of dehydration holes in communication with the outside, and in the inner bottom region of the spin basket 15 with respect to the spin basket 15. Washing water flow forming member 21 is implemented as a pulsator type is coupled to rotate relative to form a washing water flow.

An upper bearing housing 49 having a disk shape is coupled to a bottom region of the spin basket 15, and a lower bearing housing 50 is fixedly coupled to a bottom of the upper bearing housing 49. The upper bearing 22a and the lower bearing 22b are accommodated in the center region of the upper bearing housing 49 and the lower bearing housing 50 so as to support the rotation of the spin basket rotation shaft 19.

Spin basket rotation shaft 19 is formed of a hollow member to accommodate the washing water flow forming member rotating shaft 23 therein, one end is rotatably coupled to the bottom region of the spin basket (15). A first outer tooth portion 20 is formed in the lower region of the spin basket rotating shaft 19 and protrudes along the radial direction and extends a predetermined length along the axial direction. A pair of inside the spin basket rotating shaft 19 is provided. The washing water flow forming member rotating shaft 23 is accommodated to be rotated relative to each other via oilless bearings 25a and 25b.

The washing water flow forming member rotating shaft 23 has an extended length relative to the spin basket rotating shaft 19, one end of which is rotatably coupled to the washing water flow forming member 21, and the other end of the washing water flow forming member rotating shaft 19 is external to the spin basket rotating shaft 19. It is installed to be exposed. A locking jaw 28 is formed in the upper region of the washing water flow forming member rotating shaft 23 to extend along the radial direction and to be supported by the upper end of the spin basket rotating shaft 19 to prevent downward flow along the axial direction. . An outer tooth portion 24 is formed in the lower region of the washing water flow forming member rotating shaft 23, and the outer tooth portion 24 has a cylindrical shape and has an inner tooth portion 58a and a second outer tooth portion 58b. Serration bushing 57 is formed is rotatably coupled to the integral.

On the other hand, the first outer tooth portion 20 and the second outer tooth portion 58b of the serration bushing 57, the inner tooth portion 32 is formed in the inner tooth portion 32 to be engaged with them in the clutch member ( 31 is coupled to move up and down along the axial direction, and the clutch member 31 has a substantially cylindrical shape and a stepped portion 34 extending along the radial direction is formed in the upper region. The clutch lifting lever member 35 is rotatably disposed on the lower side of the clutch member 31 so that the clutch member 31 can be lifted, and the clutch lifting lever member 35 is adjacent to the clutch lifting lever member 35. The lever rotation drive part 40 is provided so that it may rotate).

The lever pivot drive unit 40 includes a lever bracket 41 for rotatably supporting the clutch lift lever member 35, a lever drive motor 43 disposed on one side of the clutch lift lever member 35, and a lever drive. The drive pulley 44 is integrally rotatably coupled to the rotation shaft of the motor 43, and one end is wound on the drive pulley 44, and the other end includes a wire 46 connected to the clutch lift lever member 35. It is.

The clutch lifting lever member 35 has an annular shape extended to accommodate the clutch member 31, and the upper and lower lever members 35 are disposed to contact the bottom surface of the stepped portion of the clutch member 31. On one side of the clutch member 31, a rotating shaft 36 is formed to be rotatable along the up and down direction, and the torsion coil 36 is rotated downward on the rotating shaft 36 so that the clutch lifting lever member 35 can be returned to its initial position. A spring return spring 38 is engaged. On the opposite side of the rotating shaft 36, a connection portion 37 is formed so that one end of the wire 46 wound around the drive pulley 44 can be connected.

One side of the lower bearing housing 50 is provided with a lever drive motor 43 so that the rotating shaft is disposed horizontally in the lifting direction of the clutch lifting lever member 35, and a wire 46 on the rotating shaft of the lever driving motor 43. Drive pulley 44 is coupled to the winding.

On the bottom of the lower bearing housing 50, a lever bracket 41 is coupled to rotatably support the clutch lifting lever member 35. The lever bracket 41 has a substantially disk shape and has a lower disc area. The shaft accommodating part 42 is formed so that the rotation shaft 36 of the clutch lifting lever member 35 can be rotatably received. The through hole is formed in the central region of the lever bracket 41 so that the spin basket rotation shaft 19 can pass therethrough, and the lower edge of the through hole is recessed upward from the bottom surface and spaced apart from each other along the circumferential direction of the through hole. The recessed accommodating portion 47 is formed.

Correspondingly, a plurality of protrusions 33 protruding from the plate surface are formed on the upper end surface of the clutch member 31, and the end portions of the protrusions 33 are each recessed accommodating portion 47 when the clutch member 31 is raised. It is rounded so that it can be easily inserted into.

On the other hand, the electric motor 51 is provided with a rotor 53 rotatably coupled to the washing water flow forming member rotation shaft 23 and a stator 59 disposed inside the rotor 53. The stator 59 has a planar projection shape having a substantially circular ring shape, and a plurality of coupling parts 60 are formed on the inner diameter side thereof to be fixedly coupled to the bottom surface of the lower bearing housing 50. The rotor 53 is It has a cylindrical shape to accommodate the stator 59 with a predetermined gap, and the rotor bushing 54 is coupled to the central region to accommodate the washing water flow forming member rotating shaft 23.

The second outer tooth portion 58b of the serration bushing 57 rotatably coupled to the washing water flow forming member rotation shaft 23 is accommodated in the central region of the rotor bushing 54 so as to be integrally rotated. The inner toothed portion 55 is formed.

By such a configuration, the pair of bearings 25a and 25b are coupled to the circumference of the washing water flow forming member rotating shaft 23 and are accommodated in the inside of the spin basket rotating shaft 19. The lever driving motor 43 is coupled to the inside of the lower bearing housing 50, and the spin basket rotating shaft 19 is inserted into the upper bearing 22a coupled to the upper bearing housing 49.

The lower bearing housing 50 is fixedly coupled to the bottom surface of the upper bearing housing 49 while the lower region of the spin basket rotating shaft 19 is inserted into the lower bearing 22b. The lever bracket 41 and the clutch lift lever member 35 are sequentially coupled to the bottom surface of the lower bearing housing 50, and the clutch member 31 is coupled between the lever bracket 41 and the clutch lift lever member 35. After that, the other end of the wire 46 wound on the driving pulley 44 is connected to the connecting portion 37 of the clutch lifting lever member 35.

The upper bearing housing 49 is fixedly coupled to the bottom surface of the tub 13, and the stator 59 is fixedly coupled to the bottom surface of the upper bearing housing 49. The washing water flow forming member rotating shaft 23 exposed through the rotor bushing 54 while the lower end of the washing water flow forming member rotating shaft 23 protruding through the stator 59 is accommodated in the rotor bushing 54. A nut (not shown) is fastened to the male threaded portion 26 of) so that they are integrally coupled to each other.

Arranged to accommodate these combinations inside the casing 11 and suspended by a plurality of support rods 12. After the spin basket 15 is accommodated in the tub 13, the spin basket rotation shaft 19 and the spin basket 15 are fixed. When the washing water flow forming member 21 is fixed to the washing water flow forming member rotating shaft 23 protruding inside the spin basket 15, the coupling is completed.

On the other hand, when explaining the operation of the present direct type washing machine having such a mechanical characteristic, when water is supplied to the laundry contained in the interior of the spin basket 15, the clutch lifting lever member 35 is self-weight and return spring (38) By rotating downward, it is positioned in a horizontal state, whereby the clutch member 31 is moved downward to mesh with the first outer tooth 20 and the second outer tooth 24. At this time, when power is applied to the electric motor 51, the rotational force of the rotor 53 is transmitted to the washing water flow forming member rotating shaft 23 and the spin basket rotating shaft 19, the washing water flow forming member 21 and the spin basket ( 15 is rotated integrally with the rotor 53 so that the washing water can be quickly and evenly absorbed in the laundry.

Next, when the rotational speed of the rotor 53 is increased by a predetermined speed or more to rotate in one direction, the washing water moves outward by centrifugal force to rise through the gap between the tub 13 and the spin basket 15 to form a central region. The so-called permeation washing, which falls down, is performed.

On the other hand, when the degree of contamination of the laundry is low, or the quantity of the laundry is small, or when the laundry is a relatively weak fiber material, or when the laundry is to be washed with pore to eliminate the kink of the cloth, the lever driving motor When the rotor 53 is rotated forward and backward at a relatively high speed while the power supply of 43 is turned off, the washing water flow forming member 21 and the spin basket 15 are integrally rotated forward and backward to perform so-called general washing. Done.

In the case where the degree of contamination of the laundry is relatively high or when the quantity is large, when the power is applied to the lever driving motor 43, the wire 46 is wound around the driving pulley 44 while the clutch lifting lever member 35 is applied. ) Is rotated upward with respect to the rotation shaft (36).

As the clutch lift lever member 35 pivots upward, the clutch member 31 moves upward along the axial direction, and the protrusion 33 formed at the upper end meshes with the recessed accommodating portion 47 formed in the lever bracket 41. The rotation is suppressed.

At this time, when the rotor 53 is rotated forward and backward, the spin basket 15 is washed while stirring the laundry while rotating only the washing water flow forming member 21 with the rotor 53 in the fixed state.

Meanwhile, in the above-described and illustrated embodiments, the protrusion is formed at the upper end of the clutch member, and the depression basket is formed at the lower end of the lever bracket so as to be engaged with the protrusion. The upper end and the lower end of the lever bracket may be configured to be formed in a state relative to each other.

When the clutch member is configured to allow relative movement with respect to the lever bracket, when the quantity is relatively small and the quantity is relatively large compared to the quantity, the spin basket is fixed and only the water flow forming member rotates forward and backward to perform the washing operation. If the amount of washing and the amount of washing are appropriate, the spin basket is rotated in the opposite direction to the washing water flow forming member by the washing water flow formed by the washing water flow forming member.

In addition, when the amount is large and the amount of washing water is relatively small compared to the amount of washing, the spin basket rotates along the washing water flow forming member, and washing is performed.

In the above-described and illustrated embodiments, the case in which the clutch lifting lever member is configured to be rotated downward by providing a return spring of a torsion coil spring type on the rotation shaft of the clutch lifting lever member is described as an example, but the elastic force is applied to the clutch member. In addition, the clutch lifting lever member may be configured to rotate down.

As described above, according to the present invention, the spin basket rotary shaft and the laundry formed with a washing water flow forming member capable of relatively rotating relative to the spin basket in the spin basket, and the first outer tooth portion and the second outer tooth portion are formed to correspond to each other. A clutch member engaged with at least one of the first outer tooth portion and the second outer tooth portion around the water flow-forming member rotating shaft, the first outer tooth portion and the second outer tooth portion, the clutch elevating lever member for elevating the clutch member, and the clutch elevating lever member; By providing the clutch lever lifting driving means to interact with each other, it is possible to form a variety of washing water flows to improve the washing effect of the cloth, and to reduce the damage of the cloth and the load of the electric motor. A washing machine is provided.

Claims (5)

A casing forming an accommodation space therein; A tub accommodated in the casing to accommodate washing water therein; A spin basket rotatably received in the tub; A spin basket rotating shaft formed of a hollow body and having one end rotatably coupled to the spin basket and having a first outer tooth portion formed on an outer surface of one end thereof; A laundry flow forming member which is accommodated in the spin basket so as to be rotated relative to the spin basket to form a laundry flow; It has an extended length compared to the spin basket rotary shaft and one end is rotatably coupled to the washing water flow forming member and is mutually concentrically coupled to the inside of the spin basket rotary shaft to be relatively rotatable, A washing water flow forming member rotating shaft having a second outer tooth portion formed in an end region exposed to the outside to correspond to the first outer tooth portion; A clutch member having an inner tooth portion engaged with at least one of the first outer tooth portion and the second outer tooth portion on an inner surface thereof and movably coupled along an axial direction of the spin basket rotation shaft; A clutch lift lever member disposed rotatably around a rotation shaft provided on one side, the at least one region being in contact with a lower side of the clutch member to rotate about the rotation shaft to move the clutch member in an axial direction; And a lever pivot drive means for pivotally driving the clutch lift lever member. The method of claim 1, The lever rotation drive means, a lever drive motor disposed on one side of the clutch member, a pulley rotatably coupled to the rotation axis of the lever drive motor, one end is wound along the circumferential direction of the pulley and the other end is Direct type washing machine comprising a wire connected to the clutch lifting lever member. The method of claim 2, And the lever pivot drive means further includes elastic means for applying an elastic force to at least one of the clutch lift lever member and the clutch member to return the clutch lift lever member to an initial position. The method according to any one of claims 1 to 3, Direct type washing machine further comprises a clutch rotation inhibiting means for suppressing the rotation of the clutch member. The method of claim 4, wherein The clutch rotation inhibiting means includes a plurality of protrusions protruding in an up-down direction and spaced apart in a circumferential direction on an upper end of the clutch member, and receiving the protrusions when the clutch member is raised to the circumferential direction of the clutch member. Direct-type washing machine comprising a recess that is engaged with the irregularities.