KR101993224B1 - Washing Machine - Google Patents

Abstract

The present invention relates to a washing machine capable of not only causing a drum to float inside a tub using a magnetic force but also preventing vibrations generated in a drum from being transmitted to a rotation shaft of a motor.

Description

Washing Machine

The present invention relates to a washing machine capable of reducing vibrations and noise.

A general drum washing machine is a device for washing laundry by using a friction between a drum and laundry to be rotated by a driving force of a motor in a state where detergent, washing water and laundry are put in a drum installed horizontally and there is almost no damage to laundry, There is a washing effect that rubs and rubs laundry.

A conventional drum washing machine includes a cabinet forming an outer shape, a tub installed in the cabinet, a drum rotatably installed inside the tub to wash the laundry, And a motor fixed to the drum through the tub.

The tub is supported by a spring and a damper inside the cabinet. The spring connects the upper part of the cabinet with the upper part of the tub, and the damper connects the inner bottom surface of the cabinet and the lower part of the tub.

In particular, the damper is hinged to both sides of the lower end of the tub to reduce vibrations transmitted to the tub when the drum is rotated.

More specifically, the damper includes a cylindrical cylinder hingedly connected to both sides of the lower end of the tub, a cylindrical piston hinged to a bottom surface of the cabinet and having the other end movably installed inside the cylinder, And a damping pad attached to an outer circumferential surface of the piston to frictionally move to the inside of the cylinder.

The damping pad is installed between the cylinder and the piston so that the vibration of the tub is attenuated by the damping pad even if relative motion occurs between the cylinder and the piston due to the vibration of the tub.

However, in the conventional drum type washing machine, although the damper is installed, there is a limit in reducing the vibration, and noise is generated due to the vibration.

That is, in the conventional drum washing machine, since the motor is fixed to the back surface of the tub and the rotation axis of the motor is connected to the drum through the back surface of the tub, the vibration generated by the drum and the motor is transmitted to the tub Respectively.

The vibration transmitted to the tub is reduced by the damper and the spring but transmitted to the cabinet. The vibrations of the tub and the cabinet caused by the rotation of the drum cause the eccentric rotation of the drum (rotation with the drum tilted by the weight of the laundry) There has been a problem of further increase.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a washing machine capable of separating a tub and a cabinet from a vibration system.

Another object of the present invention is to provide a washing machine in which noises and vibrations generated during rotation of a drum are reduced by floating the drum in the tub using magnetic force.

Further, the present invention provides a washing machine capable of rotating while the rotary shaft of the drum is kept eccentric to the rotary shaft of the motor, thereby preventing the vibration generated during the rotation of the drum from being transmitted to the turbine through the rotation axis of the motor And a washing machine provided with the washing machine.

It is another object of the present invention to provide a washing machine capable of maximizing the volume of a tub provided in a cabinet for providing a limited space.

Another object of the present invention is to provide a washing machine capable of preventing vibration of a tub from being transmitted to a cabinet through a gasket sealing the tub.

In order to solve the above-described problems, the present invention provides a washing machine comprising a cabinet provided with a loading port through which laundry enters and exits, a tub provided inside the cabinet for storing wash water and having a tub opening communicating with the inlet, A cylindrical drum having a drum opening communicating with the tub opening and a repulsive force between a magnetic unit provided in the tub and a magnetic unit provided in the drum, A circumferential support portion for levitating the circumferential surface of the drum in the tub; a longitudinal support portion for maintaining a gap between the tub and the drum along the longitudinal direction of the drum and rotatably supporting the drum; Thereby providing a washing machine.

In this case, the washing machine of the present invention includes a first magnetic part rotatably provided on the outside of the tub, and a second magnetic part fixed on the drum and rotating the drum by an attractive force provided by the first magnetic part, And may further include a drum driving unit.

Wherein the longitudinal support portion is provided at any one of a drum front surface provided with the drum opening portion and a tub front surface provided with the tub opening portion to maintain a gap between the drum front surface and the tub front surface, And a tub rear surface facing the drum front surface and a tub rear surface opposed to the tub front surface, wherein the gap between the drum rear surface and the tub rear surface is And a second support portion for supporting the rear surface of the drum in a rotatable manner.

The first support portion may include a housing fixed to one of the front surface of the drum and the front surface of the tub, a ball rotatably installed in the housing and contacting the other of the drum front surface and the front tub surface And the second supporting portion is fixed to one of the rear face of the drum and the rear face of the tub, and a ball rotatably installed in the housing and contacting the other of the rear face of the drum and the rear face of the tub can do.

The first support portion may include a support base fixed to one of the drum front surface and the tub front surface, and a second support portion rotatably mounted on the support portion base to contact the other of the drum front surface and the tub front surface. Wherein the second support portion includes a support base fixed to one of a rear surface of the drum and a rear surface of the tub, and a second support portion rotatably installed on the support base to contact the other of the rear surface of the drum and the rear surface of the tub. And a roller.

The rollers of the first and second support portions are provided on the drum front surface and the tub front surface along the circumferential direction of the drum, and the rollers of the second support portion are provided on the rear surface of the drum and the rear surface of the tub And the roller of the first supporting portion and the roller of the second supporting portion may be provided along the tangential direction of the rotational trajectory of the drum.

The drum driving unit may further include a motor disposed on a rear surface of the tub, wherein the first magnetic unit is coupled to a rotating shaft of the motor, and the second magnetic unit is fixed to a rear surface of the drum.

According to another aspect of the present invention, there is provided a washing machine comprising a motor having a rotating shaft, a motor disposed outside the tub, a drum connected to the drum and the rotating shaft through the tub, And may further include a coupler that allows movement within the range.

In this case, the longitudinal support portion may be rotatably installed on any one of a front surface of the drum having the drum opening portion and a front surface of the tub having the tub opening portion to contact the other one of the drum front surface and the tub front surface May be provided.

The longitudinal support may further include a housing fixed to one of the drum front surface and the tub front surface to rotatably support the ball.

The longitudinal support may be provided on the drum front surface or the tub front surface along a circumferential direction of the drum.

The lengthwise support portion is rotatably fixed to one of a front surface of the drum having the drum opening portion and a front surface of the tub having the tub opening portion so as to contact the other one of the front surface of the drum and the front surface of the tub Roller.

In this case, the longitudinal support portion may further include a support base fixed to one of the drum front surface and the tub front surface to rotatably support the roller.

The lengthwise support portions may be provided on the drum front surface and the tub front surface along a circumferential direction of the drum, and the rollers may be provided along the tangential direction of the rotation trajectory of the drum.

The coupler includes a drum fixing part coupled to the drum, a shrinking fixing part coupled to the rotation shaft, a connection part positioned between the shrinking fixing part and the drum fixing part, and a coupling part located between the drum fixing part and the coupling part A fixing portion for supporting the drum fixing portion so as to reciprocate along the radial direction of the connecting portion, a connecting portion which is positioned between the connecting portion and the shrink fitting portion and supports the connecting portion in a reciprocating manner along the radial direction of the shrink fitting portion, Guides may be included.

INDUSTRIAL APPLICABILITY The present invention can provide an effect of providing a washing machine capable of separating a cab and a cab from a vibration system.

In addition, the present invention can provide an effect of providing a washing machine in which noises and vibrations generated during rotation of the drum are reduced by floating the drum in the tub using a magnetic force.

Further, the present invention provides a washing machine capable of rotating while the rotary shaft of the drum is kept eccentric to the rotary shaft of the motor, thereby preventing the vibration generated during the rotation of the drum from being transmitted to the turbine through the rotation axis of the motor It is possible to provide an effect of providing a washing machine with a washing machine.

In addition, the present invention can provide a washing apparatus capable of maximizing the volume of a tub provided in a cabinet providing a limited space.

In addition, the present invention can provide a washing apparatus capable of preventing vibration of a tub from being transmitted to a cabinet through a gasket provided for the purpose of sealing the tub.

1 shows a structure of a washing machine according to the present invention.
Fig. 2 shows II and II-II in Fig.
3 shows a drum supporting part (circumferential supporting part) provided in the washing machine of the present invention.
4 is a graph showing the magnitude of the magnetic force according to the distance between the magnetic units.
5 to 7 illustrate another embodiment of the drum supporting portion (circumferential supporting portion) provided in the washing apparatus of the present invention.
8 and 9 show a drum supporting part (longitudinal supporting part) provided in the washing machine of the present invention.
10 and 11 show an example of a coupler (a magnetic coupler) provided in the washing apparatus of the present invention.
12 and 13 illustrate another embodiment of a coupler included in the washing apparatus of the present invention.

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

Unless defined otherwise, all terms herein are the same as the general meaning of the term as understood by one of ordinary skill in the art to which this invention belongs, and if the terms used herein conflict with the general meaning of the term Are as defined herein.

It is to be understood that the present invention is not limited to the details of the embodiments described below, .

FIG. 1 illustrates a washing machine according to an embodiment of the present invention. Referring to FIG. 1, the washing machine 100 includes a cabinet 1 forming an outer appearance, a tub 2 disposed inside the cabinet to store wash water, And a drum 3 in which laundry is received.

The cabinet 1 is provided with a charging port 11 for charging laundry into the drum 3 or discharging laundry laid on the drum. The charging port 11 is opened and closed by a door 13.

The tub 2 may be provided in a cylindrical shape with an empty interior. The tub opening 21 communicating with the inlet 11 is provided on the front side (front side of the tub). That is, the tub 2, which is provided in a cylindrical shape, is provided with a tub opening 21 through which the laundry can enter and exit on the surface facing the door.

The drum 3 is provided in a cylindrical shape and provided with a drum opening 31 communicating with the tub opening 21 on the front side (front side of the drum), which is rotatable within the tub by a drum driving portion 6 to be described later. Accordingly, the user can insert the laundry into the drum through the opening and closing of the door 13, and can also take out the laundry in the drum to the outside of the cabinet.

A plurality of through holes (35) are formed on the outer peripheral surface of the drum (3). Therefore, the washing water supplied to the tub 2 through the water supply unit (not shown) can be supplied to the drum 3 through the through hole 35, and the washing water in the drum can be supplied to the through hole 35, So that the tub 2 can be discharged to the outside.

The tub 2 is fixed to the inside of the cabinet 1 through the tub supporting portion 4. The tub supporting portion 4 supports the tub 2 using a repulsive force which is one of magnetic forces .

That is, the tub supporter 4 provided in the present invention includes upper units 42, 43, and 44 having magnetic poles of N and S poles, a lower unit (45, 46, 47), and a cylinder (41) in which the upper unit and the lower unit are accommodated.

The upper unit includes an upper piston 42 located inside the cylinder 41, an upper rod 43 fixed to the tub 2 at one end and fixed to the upper piston 42, and an upper rod 43 wound at the upper piston or the upper rod And an upper coil 44 which is located inside the cylinder and magnetizes the upper piston 42 when an electric current is supplied.

The lower unit is composed of a lower piston 45 positioned in the cylinder, a lower rod 46 fixed to the cabinet 1 at one end and fixed to the lower piston 45, a lower rod 46 wound around the lower piston or the lower rod, And a lower coil 47 for magnetizing the lower piston 45 when an electric current is supplied.

In this case, it is preferable that the upper coil 44 and the lower coil 47 are magnetized so as to have the same magnetic poles. Therefore, the tub 2 provided in the present invention can be prevented from being damaged by the repulsive force between the upper piston 42 magnetized by the upper coil 44 and the lower piston 45 magnetized by the lower coil 47, And can be supported internally.

The washing machine 100 further includes drum supporting portions H and L. The drum supporting portion includes a circumferential supporting portion H for allowing the drum to rise along the height direction of the cabinet (the height direction of the tub) And a lengthwise support portion L that maintains a constant distance between the tub and the drum along the longitudinal direction of the tub (the longitudinal direction of the drum).

The circumferential support portion H levitates the circumferential surface of the drum 3 inside the tub 2 through a repulsive force between the magnetic unit provided in the tub and the magnetic unit provided in the drum.

That is, the circumferential support portion H is provided on the circumferential surface of the first magnetic unit 51 and the drum 3 provided on the circumferential surface of the tub 2, and has the same magnetic pole as the first magnetic unit And a two-magnetic unit 52.

The first magnetic unit 51 and the second magnetic unit 52 may be provided as permanent magnets. The first magnetic unit 51 is disposed on the inner circumferential surface TI of the tub 2 (Or a permanent magnet having any one of an N pole and an S pole) provided with an N pole and an S pole on a circumferential surface (TO), and the second magnetic unit (52) And may be provided as a permanent magnet provided on the main surface DO or the inner circumferential surface DI.

In this case, it is preferable that the first magnetic unit 51 and the second magnetic unit 52 are disposed such that the same magnetic pole faces the drum 3 so that the drum 3 can float due to the repulsive force between the two permanent magnets.

When the first magnetic unit 51 is discontinuously disposed along the circumferential surface of the tub 2 as shown in FIG. 2 (II), the second magnetic unit 52 is disposed on the circumferential surface of the drum 3, As shown in FIG.

However, when the first magnetic unit 51 is continuously provided along the circumferential surface of the tub 2, the second magnetic unit 52 may be provided discontinuously along the circumferential surface of the drum 3. [

When the first magnetic unit 51 is provided discontinuously along the circumferential surface of the tub 2, the first magnetic unit 51 may be provided with a button-shaped permanent magnet spaced a predetermined distance along the circumferential surface of the tub 2 have.

The second magnetic unit 52 provided continuously along the circumferential surface of the drum may be provided with a permanent magnet in the form of a band wound on the circumferential surface of the drum (see FIG. 10).

Meanwhile, the first magnetic unit 51 and the second magnetic unit 52 according to the present invention may have the structures shown in FIGS. 3 through 7.

3, the first magnetic unit 51 may be fixed to the outer circumferential surface (FIG. 3 (a)) of the tub 2 or the inner circumferential surface of the tub (FIG. 3 (b) (FIG. 3 (c)) by inserting it into the circumferential surface of the tub 2 and fixing it.

In this case, the second magnetic unit 52 is preferably fixed to the outer circumferential surface of the drum 3, but the second magnetic unit 52 may be fixed to the inner circumferential surface of the drum 3 or may be fixed to the circumferential surface of the drum 3 It may be inserted and fixed.

However, in any case, the first magnetic unit 51 and the second magnetic unit 52 should be arranged such that the same magnetic poles face each other.

On the other hand, when the drum is rotated, the first magnetic unit 51 vibrates due to the repulsive force between the second magnetic unit 52 and the first magnetic unit 51, and the vibration of the tub 51 2 may be vibrated. To prevent this, the circumferential support H may further include a vibration damping unit 55.

The vibration damping unit 55 may be fixed to the first magnetic unit 51 and positioned between the cabinet 1 and the first magnetic unit 51 as shown in Fig. (To support the first magnetic unit 51 on the inner circumferential surface of the tub 2) between the inner circumferential surface of the tub 2 and the first magnetic unit 51 .

3 (c), when the first magnetic unit 51 is inserted and fixed on the circumferential surface of the tub 2, the vibration damping unit 55 is inserted into the inner circumferential surface of the tub 2 And may be provided to support the first magnetic unit 51.

That is, when the first magnetic unit 51 is inserted into and fixed to the circumferential surface of the tub 2, the tub 2 includes an insertion hole 25 into which the first magnetic unit 51 is inserted, The vibration damping unit 55 may be provided in the insertion hole 25 to support the first magnetic unit 51.

4, when the distance (air gap) between the second magnetic unit 52 and the first magnetic unit 51 becomes close to each other due to the vibration of the drum 3, the second magnetic unit 52 and the first The strength of the repulsive force (magnetic force) of the magnetic unit 51 is increased, so that the tub 2 can oscillate together with the vibration of the drum 3.

This is because the first magnetic unit 51 is fixed to the tub 2 and the repulsive force transmitted to the first magnetic unit 51 is transmitted to the tub 2 according to the motion of the second magnetic unit 52.

However, since the vibration damping unit 55 is located between the first magnetic unit 51 and the tub 2, the washing apparatus 100 of the present invention minimizes the transmission of the vibration of the drum 3 to the tub 2 (Figs. 3 (b) and 3 (c)).

3 (a)), the vibration damping unit 55 is arranged so that the tub 2 is located between the cabinet 1 and the first magnetic unit 51. In the case where the vibration damping unit 55 is provided between the cabinet 1 and the first magnetic unit 51 It is possible to reduce the noise and vibration generated by the collision.

5 illustrates another embodiment of the circumferential support H provided in the present invention. The circumferential support H according to the present embodiment is further provided with a magnetic force amplifying unit 56. [

As shown in FIG. 6, it is experimentally confirmed that when a high permeability metal (iron, SUS430, SS400, etc.) is placed on either the N pole or the S pole of the permanent magnet, the magnetic force of the magnetic pole I could.

That is, in the case of the drum side magnet (bar-shaped magnet), the magnetic force of the N and S poles is 295mT and 287mT, but when the metal is positioned at the S pole, the magnetic force of the N pole increases to 330mT, The magnetic force is reduced to 97 mT. It is possible to confirm that the increase of the magnetic force of the N pole is smaller than the increase of the magnetic force when the two magnets are overlapped but is useful for increasing the magnetic force of the N pole provided in one magnet.

On the other hand, it was confirmed that the magnetic force of the N pole increases from 463mT to 500mT, and the magnetic force of the S pole decreases from 462mT to 245mT when the metal is placed on the S pole even in the case of the tubular magnet (button shaped magnet).

6 is a means for increasing the repulsive force acting between the drum 3 and the tub 2 using the phenomenon identified in Fig. 6, and the magnetic force amplifying unit 56 is a means And may be provided in the one magnetic unit 51 and the second magnetic unit 52, respectively.

5 (a), one magnetic force amplifying unit 56 is fixed to the first magnetic unit 51 and is located between the cabinet 1 and the tub 2, and the other magnetic force amplifying unit (56) may be located between the second magnetic unit (52) and the outer circumferential surface of the drum (3).

With this structure, the magnetic force of the N pole of the first magnetic unit 51 and the magnetic pole of the N pole of the second magnetic unit 52 will increase, so that the drum 3 provided in the present invention is more stably supported by the tub 2 ) Will be maintained inside.

The magnetic force amplifying unit 56 reduces the magnetic force emitted from the S pole of the first magnetic unit 51 and the S pole of the second magnetic unit 52, And the electronic apparatus inside the washing machine can be prevented from malfunctioning due to the magnetic force provided by the second magnetic unit.

Meanwhile, the magnetic force amplifying unit 56 may be provided in the form of FIG. 5 (b) or 5 (c).

That is, the magnetic force amplifying unit 56 provided in the second magnetic unit 52 is fixed to the outer circumferential surface of the drum 3 to support the second magnetic unit 52 and is provided in the first magnetic unit 51 The magnetic force amplifying unit 56 is fixed to the inner circumferential surface of the tub 2 to support the first magnetic unit 51 (FIG. 5 (b)) or the inside of the insertion groove 25 provided in the tub 2 (FIG. 5 (c)) to support the first magnetic unit 51.

5 shows a structure in which the drum 3 is lifted up in the tub 2 by the repulsive force of the N pole provided in the first magnetic unit 51 and the second magnetic unit 53, It may be provided to float inside the tub 2 by the repulsive force of the S-pole.

7 shows another embodiment of the circumferential support H provided in the present invention. The circumferential support H according to the present embodiment includes both the vibration damping unit 55 and the magnetic force amplifying unit 56 .

The magnetic force amplifying unit 56 and the vibration attenuating unit 55 are sequentially stacked from the surface of the first magnetic unit 51 in the first magnetic unit 51 provided in the present embodiment, It is preferable that only the magnetic force amplifying unit 56 be provided.

7, the second magnetic unit 52 may also be provided in the form of sequentially stacking the magnetic force amplifying unit 56 and the vibration attenuating unit 55. FIG.

Therefore, the drum 3 provided in the washing apparatus 100 of the present invention maintains the floating state inside the tub 2 by the circumferential support portion H, so that even if the drum rotates with eccentricity, the vibration of the drum is minimized .

1), the distance between the tub 2 and the drum 3 is set to be constant along the longitudinal direction of the tub (the longitudinal direction of the drum, the direction parallel to the rotational axis of the drum) And may be provided to maintain the gap between the turbine and the drum through a repulsive force between the magnetic bodies as a means for maintaining the gap between the turbines and the drum through a ball or a roller as shown in FIGS. 8 and 9 .

A third magnetic unit provided on the inner front surface and the rear surface of the tub, respectively, in the case of a longitudinal support for maintaining a gap between the tub and the drum through repulsion between the magnetic bodies, a fourth magnetic unit provided on the front and rear surfaces of the drum, And may be provided as a magnetic unit.

8 includes a housing 531, a ball 533 rotatably provided in the housing, a ball retaining portion 535 provided inside the housing for supporting the ball 533, ).

The ball 533 is rotatable by the ball holding portion 535 and is prevented from being separated from the housing 531 by the ball break preventing portion 537 fixed to the housing 531. [

The longitudinal support portion L may be provided only on the front surface of the drum 3 according to the structure of the drum driving portion 6 described later or may be provided on the front and rear surfaces of the drum, respectively.

1, a washing machine (a washing machine in which the drum 3 is not directly connected to the drum driving part 6) provided with a drum driving part 6 for rotating the drum 3 using a magnetic force, May be fixed to the outer peripheral surface of the drum 3 or the inner peripheral surface of the tub 2. [

When the housing 531 is fixed to the outer circumferential surface of the drum 3, the ball 533 provided on the front surface (the surface provided with the drum opening) of the drum 3 is pressed against the front surface of the tub 2 And the ball 533 provided on the rear surface of the drum 3 may be provided to contact the rear surface of the tub 2. [

As shown in FIG. 2 (a), the housing 531 may have a plurality of holes spaced from each other by a predetermined distance on the front surface and the rear surface of the drum 3, respectively.

However, when the housing 531 is fixed to the inner circumferential surface of the tub 2, the ball 533 located on the front face of the tub 2 contacts the front face of the drum, and the ball located on the rear face of the tub 2 (533) is preferably provided to contact the rear surface of the drum (3).

The ball 533 is rotatably provided in the housing 531 so that even if the drum 3 vibrates along the height direction of the tub (the height direction of the cabinet) So that it can be maintained at a constant interval.

8 shows a case in which the ball 533 is rotatably mounted on a housing 531 fixed to a drum or a tub. However, the longitudinal support L provided in the present invention is not limited thereto. It may be provided only with the ball 533. In this case, it is preferable that the ball 533 is rotatably installed in one of the drum and the tub so as to contact the other of the drum and the tub.

9 shows another embodiment of the longitudinal support L. The longitudinal support L according to the present embodiment includes a support base 541, a roller support 545 provided on the support base, a roller support And a roller 543 rotatably provided on the first and second rollers 545 and 545.

The roller support 545 is a means for fixing the roller 543 to the support base 541 and the roller 543 is rotatably coupled to the roller support 545 via a roller rotation shaft 547.

The support base 541 may be fixed to the drum 3 as shown in FIG. 9, but may be fixed to the tub 2 as shown in FIG.

When the support base 541 is fixed to the outer circumferential surface of the drum 3, the roller 543 located on the front face of the drum contacts the front face of the tub 2, The roller 543 is provided so as to contact the rear surface of the tub 2.

The roller 543 must be provided so as not to interfere with the rotation of the drum 3. Figure 9B shows a state in which the roller 543 is provided along the tangent line T direction with respect to the rotation locus R of the drum Is shown as an example.

In this case, the roller rotation shaft 547 may be provided along the normal (N) direction of the drum rotation locus R.

The support base 541 may be spaced a predetermined distance along the circumferential direction of the drum.

On the other hand, when the support base 541 is fixed to the inner circumferential surface of the tub 2, the roller 543 located on the front face of the tub 2 contacts the front face of the drum, It is preferable that the roller 543 is provided so as to be in contact with the rear surface of the drum 3.

9 shows a case in which the roller 543 is rotatably mounted on a support base 541 fixed to a drum or a tub. However, the longitudinal support L, which is provided in the present invention, May be provided only by the roller 543. In this case, it is preferable that the roller 543 is provided so as to be rotatable on one of the drum and the tub so as to contact the other one of the drum and the tub.

Hereinafter, the drum driving unit 6 provided in the washing machine 100 of the present invention will be described.

The drum 3 provided in the washing apparatus 100 of the present invention is rotated inside the tub by the drum driving unit 6. [

1, the drum driving unit 6 includes a motor 61 disposed on the rear surface of the tub 2, a first magnetic unit 63 coupled to the rotation shaft 615 of the motor, And a magnetic coupler (C) comprising a second magnetic portion (65) for rotating the drum by an attractive force provided by the first magnetic portion (65).

The motor 61 is spaced a predetermined distance from the rear surface of the tub 2 by a bracket 62 and the first magnetic part 63 is disposed between the rear surface of the tub 2 and the motor 61 And the second magnetic portion 65 may be fixed to the rear surface of the drum 3. The second magnetic portion 65 may be fixed to the rear surface of the drum 3,

10 and 11, the first magnetic portion 63 includes a first base 631 having a first fastening hole 637 to which the rotation axis of the motor 61 is fixed, And a second magnetic body 635 having a magnetic pole different from the first magnetic body. The first magnetic body 633 may have a magnetic pole of any one of the first magnetic body 633 and the second magnetic body 633.

The second magnetic part 65 includes a second base 651 fixed to the rear surface of the drum 3, a third magnetic body 653 fixed to the second base and having a magnetic pole different from that of the first magnetic body 633, A second magnetic body 653 fixed to the second base, and a fourth magnetic body 655 having a magnetic pole different from that of the second magnetic body 635.

In this case, the outer circumferential surfaces of the third magnetic body 653 and the fourth magnetic body 655 may further include an insulating portion 659. Although not shown in the drawing, the insulating portion may be provided on the outer peripheral surfaces of the first magnetic body 633 and the second magnetic body 635, respectively.

Furthermore, when the drum 3 is provided with the drum rotation shaft 33, the second base 651 may further include a second coupling hole 657 to which the drum rotation shaft 33 is fixed.

When the first base 631 is rotated by the rotation axis 611 of the motor 61, the first magnetic body 633 and the second magnetic body 635 rotate and the first magnetic body 633 and the second magnetic body 635 The third magnetic body 653 and the fourth magnetic body 655 rotate the second base 651 by an attractive force so that the drum 3 rotates inside the tub 2. [

That is, the drum 3 provided in the washing machine 100 of the present invention is not directly coupled to the rotating shaft 611 of the motor 61, but is rotated, and the first and second magnetic parts 63 and 65, And is rotated by the attraction force between them.

Therefore, in the present embodiment, the longitudinal support portion L should be provided with a first support portion provided on the front face of the drum and a second support portion provided on the rear face of the drum.

Since the drum 3 according to the present embodiment has a structure in which the drum 3 is rotated by the attractive force between the first magnetic portion 63 and the second magnetic portion 65, the second supporting portion (the length provided on the rear surface of the drum The distance between the rear face of the drum and the rear face of the tub 2 can not be maintained without the supporting portion and the first supporting portion (the longitudinal supporting portion provided on the front face of the drum) This is because the front face of the tub can not be prevented from colliding.

The washing machine 100 having the above structure is provided with a washing machine in which vibration and noise are reduced since the vibration generated during rotation of the drum 3 is not transmitted to the tub 2 through the rotation shaft 615 of the motor .

In the washing machine 100 of the present invention, the drum 3 is lifted up inside the tub 2 by the circumferential supporting portion H for providing a magnetic force, and the drum 3 is lifted up through the longitudinal supporting portion L Since the gap between the tubs is maintained, it is possible to prevent the drum 3 from rotating eccentrically even if laundry is concentrated on a part of the drum, thereby minimizing the noise and vibration generated in the conventional washing machine.

That is, the conventional washing machine 100 has a problem that vibration and noise are transmitted to the turbine or the cabinet due to rotation of the drum when the drum rotates due to the rotating shaft passing through the rear surface of the tub and coupled to the rear surface of the drum. Not only the drum 3 is rotated by the drum 3 but also the tub inner circumferential surface and the outer circumferential surface of the drum are kept at constant intervals through the circumferential support portion H and the longitudinal support portion L so that vibration and noise generated during rotation of the drum are minimized You can do it.

Further, since the washing apparatus 100 according to the present invention can separate the tub 2 from the vibration system, a gasket for preventing the vibration of the tub from being transmitted to the cabinet is unnecessary.

In the conventional washing machine, it is necessary to provide a gasket between the inlet 11 and the tub opening 21 to prevent leakage of vibration and washing water in the tub. However, the present invention is not limited to the gasket for vibration isolation in the washing machine 100 There is an effect that it can be removed.

Since the washing apparatus 100 according to the present invention can separate the tub 2 from the vibration system, it is possible to maximize the volume of the tub 2 located in the cabinet 1 having the same volume (maximize the washing capacity) Can be expected.

In the conventional washing machine, it is necessary to secure a space between the tub and the cabinet to prevent the cabin from colliding with the tub when the tub is vibrated. The washing machine 100 of the present invention minimizes the vibration width of the tub through the above- Since the tub can be separated from the vibration system, the volume of the tub 2 located inside the cabinet 1 having a certain volume can be maximized.

10 and 11, the first magnetic part 63 is fixed to the drum 3 and the second magnetic part 65 is fixed to the rotation shaft 615 of the motor 61 It is acceptable.

FIG. 12 shows another embodiment of the drum driving unit 6 provided in the washing apparatus of the present invention. The drum driving unit 6 according to the present embodiment includes a motor 61 located on the rear surface of the tub 2, And a coupler 67 for transmitting the rotational force provided by the motor to the drum.

12, the drum driving unit 6 includes a pulley provided on the rear surface of the tub, a motor provided on a cabinet (e.g., a bottom surface of the cabinet), a belt connecting the motor and the pulley, And a coupler for transmitting rotational force to the drum.

The motor 61 provided in the drum driving unit 6 may include a stator 613 fixed to the rear surface of the tub and a rotor 611 provided to surround the stator and having a rotating shaft 615 fixed thereto.

The coupler 67 provided in the drum driving unit 6 connects the drum 3 and the rotary shaft 615. The rotary center of the drum 3 rotates about a certain distance from the rotation center of the rotary shaft 615 And the like.

That is, the coupler 67 can transmit the rotational force of the rotary shaft 615 to the drum 3 even if the rotation center of the drum 3 does not coincide with the rotation center of the rotary shaft 615, (The center of rotation of the drum 3 can move relative to the center of rotation of the rotary shaft 615) from being transmitted to the tub 2 through the rotary shaft 615.

13 (a), the coupler 67 includes a drum fixing portion 671 fixed to the drum 3, a shaft fixing portion 671 fixed to the rotation shaft 615 of the motor, A connecting portion 675 positioned between the drum fixing portion and the shrinking fixing portion and a connection portion 675 interposed between the drum fixing portion 671 and the connecting portion 675. The drum fixing portion 671 has a diameter The connecting portion 675 is located between the shrinking portion 673 and the connecting portion 675 can reciprocate along the diametrical direction of the shrinking portion 673 As shown in FIG.

The fixing portion guide 677 is provided on the other of the fixing portion rail 6771 provided on one of the drum fixing portion 671 and the connecting portion 675 and the drum fixing portion 671 and the connecting portion 675 And a fixed rail receiving groove 6773 for movably receiving the fixed rail 6771.

The connecting portion guide 679 is also provided on the other one of the connecting portion rail 6791, the shrinking portion 673 and the connecting portion 675 provided on either the shrinking portion 673 or the connecting portion 675 And a connection rail receiving groove 6793 in which the connection rail 6791 is movably received.

That is, the fixed rail 6771 is protruded toward the drum fixing portion 671 along the radial direction of the connection portion 675, and the fixed rail receiving groove 6773 is provided with the fixed rail 6771 The drum fixing part 671 may be formed to have a concave shape along the radial direction thereof.

The connecting portion rail 6791 is protruded toward the shrinking portion 673 along the radial direction of the connecting portion 675 and the connecting portion rail receiving groove 6793 is formed in the connecting portion rail 6791 so as to receive the connecting portion rail 6791, (Not shown).

Although not shown in the drawing, the fixed rail 6771 protrudes toward the connection portion 675 along the radial direction of the drum fixing portion 671, and the fixed rail receiving groove 6773 has a diameter of the connection portion 675 And may be bent and concave along the direction.

The connecting portion rail 6791 is protruded toward the connecting portion 675 along the radial direction of the shrinking portion 673 and the connecting portion receiving groove 6793 is bent concavely along the diameter direction of the connecting portion 675 .

Further, the fixing portion rail 6771 and the connecting portion rail 6791 may be spaced apart from each other by 45 ° to 90 °. This is to allow the coupler 67 to easily absorb the vibration in the height direction of the drum and the vibration in the width direction of the drum.

When the motor 61 is operated and the rotation shaft 615 rotates, the shaft fixing portion 673 rotates, so that the connection portion 675 coupled to the shrinking portion 673 by the connection portion guide 679 also rotates.

When the connection portion 675 rotates, the drum fixing portion 671 coupled to the connection portion 675 also rotates through the fixing portion guide 677, so that the drum 3 will rotate.

When the drum 3 rotates, the drum 3 vibrates in the height direction by the object to be cleaned and the drum vibrates in the width direction.

The vibration of the drum in the height direction is canceled in the course of the reciprocating movement of the drum fixing part 671 with respect to the connecting part 675 or the reciprocation of the connecting part 675 with respect to the shaking part 673, The vibration is canceled in the process of reciprocating the connection portion 675 with respect to the shrinking portion 673 or in the process of reciprocating with the drum fixing portion 671 with respect to the connection portion 675. Therefore, the washing apparatus of the present invention can prevent or minimize the vibration transmitted from the drum through the coupler 67 to the motor 61 through the rotary shaft 615. [

The shrinking portion 673 may be rotatably coupled to the rear surface of the tub 2 through the bearing 23 as shown in Fig. 12, but the shrinking portion 673 may be rotatably coupled to the rotating shaft 615 May be rotatably coupled to the rear surface of the tub through the bearing 23. [

13 (b) shows another embodiment of the coupler. The coupler 69 according to this embodiment also includes a drum fixing portion 691 fixed to the drum 3, a shrinking portion 693 fixed to the rotation shaft 615 A connecting portion 695 located between the drum fixing portion and the shrinking fixing portion, a fixing portion guide 697 provided between the drum fixing portion and the connecting portion, and a connecting portion guide 699 located between the connecting portion and the shrinking portion.

The fixing portion guide 697 may be provided on one of the drum fixing portion 691 and the connection portion 695 so that the fixing portion guide 697 may be provided on one of the drum fixing portion 691 and the connection portion 695, (Same structure as that of 6995), which is provided on the fixed rail guide 6973 and accommodates the fixed rail 6971, is provided.

The connecting portion guide 699 provided in the present embodiment is connected to the other one of the connecting portion rail 6991, the shrinking portion 693 and the connecting portion 695 provided on one of the shrinking portion 693 and the connecting portion 695 A connecting portion rail guide 6993 provided on the connecting portion rail guide 6993 and a connecting portion receiving groove 6995 for receiving the connecting portion rail 6991. [

The fixing portion rail 6971 and the connecting portion rail 6991 may be spaced apart from each other by 45 ° to 90 °.

The bearing 23 provided on the rear surface of the tub 2 may be provided to support the outer circumferential surface of the shrinking portion 693 or to support the outer circumferential surface of the rotary shaft 615. [ Accordingly, the washing apparatus of the present invention can prevent the wash water in the tub from leaking to the outside of the tub.

On the other hand, the longitudinal support portion L provided in the present embodiment may be provided only on the front side of the drum as shown in FIG.

Since the drum 3 according to the present embodiment is connected to the rotation shaft 615 of the motor through the couplers 67 and 69, Because the distance between the surface and the rear surface of the tub can be maintained by the couplers 67, 69.

The present invention may be embodied in various forms without departing from the scope of the invention. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

100: washing machine 1: cabinet 11: inlet
13: door 2: tub 21: tub opening
23: Bearing 3: Drum 31: Drum opening
33: drum rotating shaft 4: tub supporting portion 41: cylinder
42: upper piston 43: upper rod 44: upper coil
45: lower piston 46: lower rod 47: lower coil
H: circumferential support portion 51: first magnetic unit 52: second magnetic unit
L: longitudinal support portion 55: vibration damping unit 56: magnetic force amplifying unit
6: drum driving part 61: motor 62: bracket
C: magnetic coupler 63: first magnetic portion 65: second magnetic portion
67, 69: coupler

Claims (15)

A cabinet having an inlet through which laundry is introduced and removed;
A tub disposed inside the cabinet for storing wash water and having a tub opening communicating with the inlet;
A cylindrical drum rotatably installed in the tub to store laundry and having a drum opening communicating with the tub opening;
A circumferential support unit for levitating a circumferential surface of the drum through a repulsive force between a magnetic unit provided in the tub and a magnetic unit provided in the drum;
A longitudinal support for maintaining the distance between the tub and the drum along the longitudinal direction of the tub and rotatably supporting the drum;
A motor disposed outside the tub with a rotating shaft; And,
And a coupler that connects the drum and the rotation shaft through the tub and allows the rotation center of the drum to move within a predetermined distance from the rotation center of the rotation shaft,
The coupler
A drum fixing part coupled to the drum;
A shrinking portion for engaging with the rotation shaft;
A connecting portion located between the shrinking portion and the drum fixing portion;
A fixing guide disposed between the drum fixing part and the coupling part to support the drum fixing part so as to reciprocate along the diameter direction of the coupling part; And,
And a connection portion guide disposed between the connection portion and the shrinking portion to support the connection portion in a reciprocating manner along the radial direction of the shrinking portion. delete delete delete delete delete delete delete The method according to claim 1,
The longitudinal support
And a ball rotatably installed on one of a front surface of the drum having the drum opening portion and a front surface of the tub having the tub opening portion and contacting the other of the drum front surface and the tub front surface . 10. The method of claim 9,
The longitudinal support
Further comprising: a housing fixed to one of the drum front surface and the tub front surface to rotatably support the ball. 11. The method of claim 10,
The longitudinal support
Wherein a plurality of washers are provided along the circumferential direction of the drum in any one of the front face of the drum and the front face of the tub. The method according to claim 1,
The longitudinal support
And a roller rotatably fixed to any one of a front surface of the drum having the drum opening and a front surface of the tub having the tub opening to contact the other one of the drum front surface and the front tub surface. Washing machine. 13. The method of claim 12,
The longitudinal support
Further comprising: a support base fixed to one of the drum front surface and the tub front surface to rotatably support the roller. 14. The method of claim 13,
The longitudinal support
Wherein the drum is provided with a plurality of teeth along the circumferential direction of the drum in either the front face of the drum or the front face of the tub, and the rollers are provided along the tangential direction of the rotational trajectory of the drum. delete

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