KR100662474B1 - Washing Machine with a Structure for Mimimizing the Vibration of a Tub - Google Patents

Abstract

Washing machine according to the present invention, the tub and the rotating shaft through-hole is formed; A drum rotatably positioned within the tub; The rotating shaft for transmitting the rotational force of the motor to the drum, at least a portion located in the rotating shaft through-hole is characterized in that it comprises a rotating shaft assembly spaced apart from the rotating shaft through-hole. According to the present invention, transmission of vibrations from the drum or the rotary shaft assembly to the tub is prevented to the maximum.

Description

Washing Machine with a Structure for Mimimizing the Vibration of a Tub}

1 is a cross-sectional view showing the internal structure of the drum washing machine according to the prior art

2 is a cross-sectional view taken along the line II-II of FIG.

3 is a cross-sectional view showing the internal structure of the damper of FIG.

Figure 4 is a cross-sectional view showing the internal structure of the washing machine according to the present invention

5 is an exploded perspective view showing the tub of FIG.

6 is a cross-sectional view showing the internal structure of a damper according to the first embodiment of the present invention

7 is an operation example showing the operation example of FIG.

8 is a sectional view showing the internal structure of a damper according to a second embodiment of the present invention

9 is a perspective view of a bushing according to the present invention;

<Explanation of symbols on main parts of the drawings>

10: cabinet 11: front

12 door 13 top

14: top cover 15: lower surface

16: base 17: side

20: Tub 20: Tub

21: opening 22a, 24a of the tub body: fastening hole

23: opening of the tub cover 24: tub cover

25 screw 26 tub bracket

28: bearing housing 30: drum

32: lift 34: liquid balancer

40: motor 42: motor shaft

50: rear gasket 60: damping device

61: motor side damper bracket 62: base side damper bracket

70 damper of the first embodiment 72 bushing

72a: insertion hole 72b: coupling groove

73: washer 74: friction member

76: coil spring 80: piston mechanism

82: piston rod 82a: end of the piston rod

82b: Thread 82c: Nut

83: support plate 84: piston

90: cylinder mechanism 92: cylinder body

92a: One end of the cylinder body 92b: The other end of the cylinder body

94: body cap 95: body cap rod

95a: end of body cap rod 95b: thread

95c: nut 100: damper of second embodiment

This application is a divided application of Korean Patent Application No. 10-2004-0042159, filed on June 9, 2004, and relates to a washing machine having a tub vibration blocking structure as an invention included in the patent application. More specifically, unlike the prior art, the present invention relates to a washing machine having a structure capable of maximally preventing the vibration of the drum or the driving device side from being transmitted to the tub as it is.

1 is a cross-sectional view showing the internal structure of the drum washing machine according to the prior art, Figure 2 is a cross-sectional view taken along the II-II of Figure 1, Figure 3 is a cross-sectional view showing the internal structure of the damper of FIG.

As shown in FIG. 1 or FIG. 2, the drum washing machine according to the prior art includes a cabinet 1 including a base 1 a and a door 1 b, and a tub installed and fixed inside the cabinet 1. (2), a drum (3) rotatably installed inside the tub (2) for rotating the laundry (m) and the wash water by the lift (3a), and a motor (4) for rotating the drum (3). ), And a spring (5), a damper (6) and a balancer (7) for damping the vibration transmitted to the tub (2).

The drum 3 has a plurality of holes (3b) is formed so that the washing water stored in the tub (2) flows into the drum (3), the lift (3a) is installed on the inner surface of the drum (3), The lift 3a rotated together with the drum 3 moves the laundry m loaded inside the drum 3 together with the wash water.

The tub 2 is installed to be spaced apart from the inner surface of the cabinet 1 by a predetermined interval, and both sides of the upper end of the tub 2 are connected to each other by a spring 5 so as to be caught inside the cabinet 1. The damper 6 is hinged to the tub 2 and the base 1a to be supported on the upper surface of the base 1a, and the spring 5 and the damper 6 are mounted from the tub 2 to the cabinet. The vibration transmitted to (1) is canceled out.

And the door (1b) of the cabinet (1) is rotatably installed on the front (1d) so that the laundry (m) can be injected, the front (2d) (3d) of the tub (2) and the drum (3) Each of the openings 2c and 3c is formed to communicate with a hole (not shown) opened by the door 1b.

A gasket 8 is installed between the front surface 1d of the cabinet 1 in which the door 1b is formed and the front surface 2d of the tub 2 to prevent the outflow of washing water, and the gasket 8 Seals the space between the inner surface of the cabinet 1 and the front surface 2d of the tub 2.

The motor 4 is installed at the rear of the tub 2 to rotate the drum 3 installed inside the tub 2.

And the drum (3) is provided with a balancer (7) for balancing the rotating drum (3), the balancer (7) formed with a predetermined weight is provided to the drum (3) which is rotated at high speed when dewatered to provide centrifugal force This suppresses the drum 3 from vibrating.

Meanwhile, as shown in FIG. 3, the damper 6 according to the related art includes a cylinder 6a fixed to the outer surface of the tub 2, a piston 6b fixed to the base 1a, and the cylinder. And a friction ring 6c interposed between 6a and piston 6b to generate a damping force due to frictional force.

In addition, the cylinder (6a) is hinged to the tub (2), looking at the fixing structure of the cylinder (6a) as follows.

First, the end of the cylinder (6a) is formed with a hollow (not shown) formed to penetrate in one direction, the rubber bushing (6d) is inserted into the hollow, the end of the piston (6b) and also the cylinder (6a) Likewise, the rubber bushing 6d is inserted into the hollow.

And each of the tub 2 and the base (1a) is formed with a bracket (9) for fixing the cylinder (6a) piston (6b), the bracket (9) for the pin (9a) is inserted in the center Holes (not shown) are formed.

Thus, the ends of the cylinder 6a and the piston 6b are inserted between the brackets 9, and the pins 9a are inserted into the ends of the bracket 9 and the cylinders 6a and the piston 6b. The damper 6 is hinged by being fastened through the rubber bushing 6d.

In addition, the damper 6 provided between the tub 2 and the base 1a causes the cylinder 6a and the piston 6b to generate relative motion to cancel the vibration and shock transmitted from the tub 2. The friction ring 6c cancels vibration and shock by generating friction with respect to the relative motion.

However, since the damper 6 installed and operated in this way exerts a damping force only in one direction in which the relative movement of the cylinder 6a and the piston 6b occurs, the damper 6 cannot be offset by the damper 6. There is a problem that the spring (5) must be provided to offset the vibration and shock.

The conventional washing machine as described above has a structure in which vibration generated in a driving device such as a drum or a motor is directly transmitted to the tub as it is, and the vibration transmitted to the tub is attenuated by a damper installed in the tub.

Under the conventional structure as described above, because the tub was accompanied by a large vibration, in order to prevent such a vibrating tub from interfering with the cabinet, the tub had to be installed to have a constant distance from the cabinet. Therefore, when the capacity of the washing machine is to be expanded, there is a problem that not only the tub size but also the cabinet size must be expanded by that much.

In addition, since the vibration of the tub is relatively severe under the conventional structure, and the damper damping the vibration is directly connected to the tub, the tub has to be designed in consideration of such a situation in terms of rigidity and strength.

In addition, such limitations can make the design of the tub itself difficult, but in addition, the overall weight of the washing machine has been increased, and the arrangement of other parts has also been affected. It also contributed to the increase in labor costs.

The present invention is to solve the above conventional problems.

It is an object of the present invention to provide a washing machine of a new structure in which transmission of vibration to a tub of a drum or a driving device is prevented to the maximum.

In particular, the present invention is to prevent the vibration transmitted to the tub to the maximum by spacing between the tubing and the rotary shaft assembly including a rotary shaft for transmitting the rotational force to the drum.

In addition, since the vibration transmitted to the tub is prevented to the maximum, there is no problem of the interference between the tub and the cabinet due to the vibration. Through this, the tub may be fixedly installed in the cabinet, and the size of the tub is maintained while maintaining the size of the cabinet. You can also enlarge it to increase its capacity.

In addition, the tub does not need to be manufactured to have the same rigidity and strength as in the prior art to facilitate the tub design.

In addition, to reduce the overall weight of the washing machine, it is possible to achieve the cost savings, such as material costs, labor costs.

Washing machine according to the present invention, the tub and the rotating shaft through-hole is formed; A drum rotatably positioned within the tub; The rotating shaft for transmitting the rotational force of the motor to the drum, at least a portion located in the rotating shaft through-hole is characterized in that it comprises a rotating shaft assembly spaced apart from the rotating shaft through-hole.

The rotating shaft through hole means a through hole through which the rotating shaft passes.

In the washing machine according to the present invention, since the portion of the rotary shaft assembly located in the rotary shaft through hole is disposed to be spaced apart from the rotary shaft through hole, the vibration of the rotary shaft assembly is not transmitted to the tub as it is. When the size of the rotating shaft through-hole is sufficiently large, the movement by the vibration of the rotating shaft assembly will be all made within the gap, thereby preventing the vibration from being transmitted to the tub at all.

The rotating shaft assembly may be made of only the rotary shaft as described above, it is natural that it can be made to include other than as described later.

In the front loading type washing machine for loading laundry from the front side, the tub may be formed with an opening for loading the laundry at the front side, and the rotating shaft through hole may be formed at the rear side. Here, the rotational force of the motor may be transmitted to the drum through the rotation shaft as described above, thereby driving the drum.

In addition, in the washing machine of the top-loading method of loading the laundry from above, the tub may be formed with an opening for loading the laundry at an upper portion thereof, and the rotating shaft through hole may be formed at at least one side of the tub.

Preferably, the tub includes a tub body and a tub cover coupled to the tub body, and the tub cover has an opening corresponding to the rotation shaft through hole.

In the front-loading washing machine, the tub body is formed with an opening for loading the laundry on the front side, the opposite side is preferably having an open form. The tub cover is coupled to the open side as described above to form a rear surface of the tub. In addition, the tub cover has a rotation shaft through-hole as described above.

The rotating shaft through hole is preferably formed to a sufficient size so that the vibration is not transmitted to the tub at all.

The rotating shaft assembly may include a bearing housing including a bearing to support the rotating shaft. In addition, the rotary shaft assembly may include a tub bracket connected in front of the bearing housing.

The gap between the rotating shaft assembly and the through hole is preferably sealed by a flexible sealing material to prevent the wash water in the tub from leaking out through the gap.

Preferably, the sealing material absorbs movement caused by the vibration of the rotary shaft assembly to block the vibration from being transmitted to the tub. To this end, the sealing material may be formed in a folded form. When the rotary shaft assembly is moved relative to the tub due to vibration, the folded portion is unfolded, and the action of the seal member prevents the movement of the rotary shaft assembly from being transmitted to the tub.

For the above operation, the sealing material may be formed in the form of a gasket to prevent vibration from being transmitted from the drum to the tub.

In addition, the sealing material may be made of an elastic material that can be contracted or relaxed to absorb vibration or shock. The degree of vibration transmitted from the rotating shaft assembly to the tub may vary according to the performance of such an elastic material, and is preferably formed to block the transmission of vibration to the maximum.

When the tub bracket and the tub cover as described above, the sealing material is preferably connected between the tub bracket and the tub cover.

Meanwhile, the present invention preferably includes a suspension for supporting the bearing housing. The suspension serves to cushion the vibration generated by the rotation of the drum.

The suspension includes a damper bracket connected to the bearing housing and a damper connected to the damper bracket. The damper is disposed to efficiently damp the vibration of the drum, and the damper bracket connects the damper and the bearing housing disposed as such.

In addition, the motor is preferably a direct type motor that is fixed to the bearing housing is directly connected to the rotating shaft.

The use of the direct type motor as described above can minimize the power loss of the motor and simplify the arrangement of parts within the limited space. In addition, since the motor is installed in the bearing housing, the vibration generated in the motor together with the vibration of the drum is cushioned by one suspension structure.

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

Figure 4 is a cross-sectional view showing the internal structure of the washing machine according to the invention, Figure 5 is an exploded perspective view of the tub of Figure 3, Figure 6 is a view showing the internal structure of the damper according to the first embodiment of the present invention 7 is a cross-sectional view illustrating an operation example of FIG. 6, FIG. 8 is a cross-sectional view illustrating an internal structure of a damper according to a second embodiment of the present invention, and FIG. 9 illustrates a bushing according to the present invention. Perspective view.

The washing machine according to the present invention includes a cabinet 10 forming an external shape, a tub 20 directly connected to the inside of the cabinet 10, and a drum 30 rotatably installed inside the tub 20. A motor 40 for rotating the drum 30, a rear gasket 50 for buffering vibration or shock transmitted through the drum 30, and the drum 30. It is configured to include a damping device (60) that is fixed to the rear of the attenuated vibration or shock transmitted from the drum (30).

The cabinet 10 has a hole (not shown) is formed in the front 11, the door 12 for opening and closing the hole is installed, the top cover 14 is installed on the upper surface 13, the lower surface 15 The base 16 to which the damping device 60 is fixed is installed.

The tub 20 is formed of a tub body 22 directly connected to the inside of the front surface 11 of the cabinet 10 so as to be in communication with a hole that the door 12 opens and closes, and an opening 23 in the center thereof. A tub cover 24 coupled to the rear surface of the tub body 22 to surround the drum 30, a tub bracket 26 closing the opening 23 of the tub cover 24, and the tub bracket (26) It is configured to include a bearing housing 28 that is assembled to the rear surface to support the motor shaft (42).

Here, the tub body 22 is fixed to the cabinet 10 by being fastened by a screw 25 after matching the opening 21 of the tub body 22 so as to communicate with the hole of the front surface 11. In addition, the tub cover 24 is assembled with the drum 30 inserted therein, and the screw 25 is formed in the fastening holes 22a and 24a formed on the outer circumference of the tub body 22 and the tub cover 24. ) Is fastened and assembled. In addition, the opening 23 of the tub cover 24 is sealed by the tub bracket 26 and a rear gasket 50 to be described later, and the bearing housing 28 is screwed by the tub 25 to the tub bracket 26. ) Is assembled on the back. Here, the bearing housing 28 is provided with a bearing (not shown) so that the motor shaft 42 rotates smoothly, and the motor shaft 42 is supported and rotated by the bearing.

The rear gasket 50 buffers vibration or shock transmitted to the tub body 22 when the washing or dehydration is transmitted to the tub bracket 26 or the bearing housing 28. It is formed of an elastic material that contracts or relaxes, and is formed along the outer circumference of the tub bracket 26 to have a function of sealing the opening 23.

The motor 40 is assembled to the rear of the bearing housing 28, the motor shaft 42 is fixed to the rear of the drum 30 through the bearing housing 28, the tub bracket 26.

The drum 30 is rotated by the motor shaft 42 rotated by the applied current, the inner surface of the drum 30 is provided with a plurality of lift 32 for moving the laundry. In addition, the front surface of the drum 30 is provided with a liquid balancer 34 to suppress the vibration by balancing the drum 30 is rotated when dewatering.

The damping device 60 is installed between the tub 20 and the base 16, the damping device 60 is a damper bracket (61) (installed in the bearing housing 28 and the base 16, respectively) 62, a damping member 72 connected to ends of the damper brackets 61 and 62, and a damper 70 passing through the buffer member 72 and connected to the damper brackets 61 and 62. ) And fixing means for fixing the buffer member 72 to the damper 70.

The damper 70 is installed in the vertical direction to attenuate the vibration or shock in the vertical direction, or is inclined to attenuate the vibration or impact applied in the horizontal component or the inclined direction.

As shown in FIG. 6, the damper 70 includes a piston mechanism 80 connected to the tub side damper bracket 61, a cylinder mechanism 90 connected to the base side damper bracket 62, and the A friction member 74 fixed to one of the piston mechanism 80 and the cylinder mechanism 90 to generate friction by relative movement, and an elastic member 76 to provide elastic force to the piston mechanism 80; It is composed.

The piston mechanism 80 includes a piston rod 82 connected to the damper bracket 61 by a shock absorber 72 and a piston 84 fixed to the other end 82d of the piston rod 82. It is configured by. Here, one end 82a of the piston rod 82 passes through the shock absorbing member 72 and is connected to the damper bracket 61 through the shock absorbing member 72.

A fixing means for fixing the shock absorbing member 72 is formed at one end of the piston rod 82, and the fixing means protrudes in the circumferential direction of the piston rod 82 to form the shock absorbing member 72. It comprises a support plate 83 for supporting and a fastening means formed on one end of the piston rod 82. Here, the fastening means is a thread 82b and a nut 82c formed at one end 82a of the piston rod 82.

And the outer peripheral surface of the piston 84 is provided with a friction member 74 for generating friction with the inner peripheral surface of the cylinder body 92, the friction member 74 is formed of a sponge, rubber, synthetic resin and the like.

The other end 82d of the piston rod 82 is provided with a screw thread and a nut 82c as fastening means of the one end 82a.

The cylinder mechanism 90 includes a damper holder 96 penetrated by the piston rod 82 and a cylinder whose one end 92a is assembled with the damper holder 96 to form a movement passage of the piston 84. It is configured to include a body 92 and a body cap 94 coupled to the other end 92b of the cylinder body 92 to seal the inside of the cylinder body 92.

In addition, the body cap 94 is formed with a body cap rod 95 formed in the moving direction of the piston 84, the end (95a) of the body cap rod 95 penetrates the buffer member 72 It protrudes outward, the end portion (95a) is provided with the fastening means (95b, 95c) to secure the buffer member 72 to the body cap 94.

On the other hand, the piston mechanism 80 moved by vibration or shock is supported by the cylinder mechanism 90 two points, the piston rod 82 is supported by the damper holder 96 and the piston 84 ) Is not caught by the piston 84 which is supported by the inner wall of the cylinder body 92.

As shown in FIG. 9, the shock absorbing member 50 is a bushing formed of an elastic material such as rubber or synthetic resin, and the shock absorbing member 72 formed in a cylindrical shape has the piston rod 82 or the body cap rod 95 at the center thereof. Insertion hole 72a is inserted into the insertion hole 72, and the damper brackets 61 and 62 are engaged and fixed to the cylindrical circumferential surface.

In particular, the end of the damper bracket (61, 62) is connected to the buffer member 72 through the coupling groove 72b of the buffer member 72, the damper bracket 61 is fixed to the coupling groove (72b) 62 is formed by bending the engaging portions (61a) (62a).

In addition, both ends of the shock absorbing member 72, that is, the upper and lower sides of the bushing 72 in the drawing, a washer 73 for protecting the bushing 72 made of an elastic material is seated, and an end 95a of the body cap rod. And the end portion 82a of the piston rod protrude through the washer 73, and the nuts 82c and 95c fastened to the threads 82b and 95b apply pressure to the washer 73. The bar is fastened by compressing the bushing 72.

In more detail, the washer 73 is seated on the support plate 83 of the piston rod 82, the bushing 72 is inserted above the washer 73, and the washer is again placed above the bushing 72. After the 73 is seated, the nut 82c is fastened to the end portion 82a of the piston rod so that the bushing 72 is fixed to the piston rod 82. At this time, the damper bracket 61 fixed to the tub side is fixed to the defect groove 72b of the bushing 72, and the relative motion of the damper bracket 61 and the piston rod 82 is the bushing 72. Is buffered by

Thus, the bushing 72 fixed to the body cap 94 is seated at the end 94a of the body cap 94 on the base 16 side, and below the bushing 72 seated at the end 94a. The washer 73 is seated, and the nut 95c is fastened to the end 95a of the body cap rod 95 protruding through the bushing 72 and the washer 73 so that the bushing 72 is the body cap. It is fixed at 94. At this time, the damper bracket 62 fixed to the base side is fixed to the side of the bushing 72, and the relative movement of the damper bracket 62 and the body cap rod 95 is buffered by the bushing 72. do.

The elastic member installed inside the cylinder body 92 is a coil spring 76 that provides an elastic force to the piston 84, and the elastic member 76 exerts an elastic force in a direction in which the friction is generated. Together with damping force. In this case, the coil spring 76 may have a structure that may be omitted in its overall configuration, and is preferably used when a greater damping force is applied to the piston 84.

A lubricant such as grease is applied to the outer circumferential surface of the piston rod 82 which moves through the damper holder 96 so that air flows into / outside the cylinder body 92 during the movement of the piston rod 82. Suppresses

On the other hand, the cylinder body 92 is sealed by the damper holder 96 and the body cap 94 to add a damping force by air damping to the piston 84 moved inside the cylinder body 92. The piston 84 moves the inside of the cylinder body 92 to compress air, and an air damping effect is generated by the air compressed by the piston 84.

In more detail, the piston 84 is provided with a hole 84a for communicating a space partitioned by the piston 84, and when the piston 84 is moved by the piston rod 82, The piston 84 compresses the air of the cylinder body 92 located in the movement direction, and the compressed air is moved to another space of the cylinder body 92 having a low pressure through the hole 84a. At this time, the air moved through the hole (84a) is not moved instantaneously, but gradually moved, the pressure of the compressed air exerts a damping force on the piston (84).

Although the above-described damper 70 has been described based on the bar shown in FIG. 6, the idea according to the present invention may be implemented by the damper 100 in a configuration in which an elastic member is not used as shown in FIG. 8.

In addition, the piston mechanism 80 may be provided on the base side and the cylinder mechanism 90 may be provided on the tub side as opposed to the installation position of the damper 70 shown in FIG. 6.

Hereinafter, the operation of the damping device according to an embodiment of the present invention will be described in more detail with reference to FIG. 7 or 8.

The damping device according to the present invention is characterized by generating a corresponding damping force for each of a plurality of directions, a description will be given mainly on the process of generating a damping force in the damping device (60).

First, as shown in FIG. 7A, when vibration or shock is applied in the longitudinal direction of the piston rod 82, the vibration or shock transmitted through the damper bracket 61 causes the bushing 72 to move up and down in the drawing. Direction and transmits a force to the piston rod 82, and when the force is not buffered by the bushing 72, the bushing 72 transfers the remaining force through the piston rod 82 to the piston ( 84). At this time, the piston rod 82 moves the piston 84 in the vertical direction by the force acting in the vertical direction, the friction member 74 and the cylinder body 92 fixed to the outer peripheral surface of the piston 84 The inner wall generates friction to exert a damping force on the vertical force. In addition, since the Fifton 84 moved up and down is provided with an elastic force by the coil spring 76, the elastic force by the coil spring 76 also acts as a damping force against the force transmitted in the vertical direction. In addition, since the cylinder body 92 is formed to be closed, the pressure of the air compressed by the piston 84 also acts as a damping force for damping the vibration or shock transmitted through the piston 84. In addition, the bushing 72 installed on the lower side of the body cap 94 also supports the body cap 94, and is compressed or relaxed in the vertical direction to buffer the force transmitted through the cylinder mechanism 90.

Next, as shown in FIG. 7B, when vibration or shock is applied in a direction other than the longitudinal direction of the piston rod 82, the bushing 72 cushions the vibration or shock.

For example, when vibration or shock in the horizontal direction is transmitted through the damper bracket 61, the damper bracket 61 transmits a force to the piston rod 82 through the bushing 72. As a result, the piston rod 82 is not moved by the horizontal vibration or shock, and the bushing 72 is supported. That is, the vibration or shock in the horizontal direction transmitted to the bushing by the damper bracket 61 is cushioned by the bushing 72 that is elastically deformed. In addition, the bushing 72 installed below the body cap 94 also buffers vibration or shock in the horizontal direction and generates a damping force.

Meanwhile, as shown in FIG. 8, the damper 70 according to the exemplary embodiment of the present invention may be inclined between the damper brackets 61 and 62 to generate a damping force in a horizontal, vertical, or inclined direction. It is possible.

In more detail, the damper 70 shown in FIG. 8 generates a damping force by a process as shown in FIG. 7A when the vibration or shock in the vertical direction is transmitted through the damper bracket 61. . In this case, the bushing 72 is compressed in the direction in which the damper bracket 61 exerts a force, that is, in the vertical direction in the drawing, rather than being compressed in the longitudinal direction of the piston rod 82 and buffers the force. In addition, the piston rod 82 and the piston 84 are installed to be inclined at a predetermined angle with respect to the base side damper bracket 62, and a partial force of vertical force is applied to the friction member 74 to be attenuated.

When the vibration or shock in the horizontal direction is transmitted through the damper bracket 61, the bushing 72 is deformed in the horizontal direction and buffers the vibration or shock. In addition, in the case of the damper 70 inclinedly installed, the damping force generated by the friction member 74 is also generated unlike in the case described in FIG. 7B. It is transmitted to the rod 82 and the piston 84 to move the piston 84, and generates a damping force against the vibration or shock by the friction generated by the moving piston (84).

According to the present invention, transmission of vibrations from the drum or the rotary shaft assembly to the tub is prevented to the maximum.

According to the present invention, since the vibration transmitted to the tub is prevented to the maximum, there is no problem that the tub and the cabinet interfere with the vibration. The tub may be fixedly installed in the cabinet, or the tub may be increased in size while maintaining the size of the cabinet.

Further, according to the present invention, the tub design is easy because the tub does not need to be manufactured to have the same rigidity and strength as in the prior art.

In addition, it is possible to reduce the overall weight of the washing machine, and there is an effect of reducing the cost of materials, labor and the like.

In addition, other good effects are expected from the essence of the present invention according to the embodiment.

Claims (16)

A tub having a rotating shaft through hole; A drum rotatably positioned within the tub; A rotary shaft assembly having a rotary shaft for transmitting a rotational force of a motor to the drum, wherein at least a portion of the rotary shaft through hole is spaced from the rotary shaft through hole; Washing machine comprising a. The tub of claim 1, wherein the tub is: Tub body; A tub cover coupled to the tub body and having the rotary shaft through hole; Washing machine comprising a. The method of claim 1, Washing machine, characterized in that the gap between the rotary shaft through hole and at least a portion of the rotary shaft assembly located in the through shaft through hole is sealed by a flexible sealing material. The method of claim 3, wherein The rotating shaft assembly further comprises a bearing housing for supporting the rotating shaft. The method of claim 4, wherein The rotating shaft assembly further comprises a tub bracket connected to the bearing housing and the front, wherein the sealing material is connected between the tub bracket and the tub. The method of claim 2, The rotating shaft assembly further comprises a bearing housing for supporting the rotating shaft and a tub bracket connected to the bearing housing in front; Washing machine, characterized in that the tub between the bracket and the tub cover is sealed by a flexible sealing material. The method of claim 4, wherein Washing machine further comprises a damping device for supporting the bearing housing. The method of claim 7, wherein the damping device is: A damper bracket connected to the bearing housing; A damper connected to the damper bracket; Washing machine comprising a. The method of claim 4, wherein The motor is fixed to the bearing housing, characterized in that the washing machine is connected directly to the rotating shaft. The method of claim 6, The motor is fixed to the bearing housing, characterized in that the washing machine is connected directly to the rotating shaft. A drum for receiving laundry; A motor for rotating the drum; And a tub bracket configured to penetrate and support the rotating shaft of the motor, and a tub body configured to be separate from the tub bracket, such that the tub is not substantially directly transmitted due to the rotation of the drum. The washing machine according to claim 11, wherein a gasket is provided between the tub bracket and the tub body. The washing machine according to claim 12, further comprising a tub cover between the tub body and the gasket. 12. The washing machine according to claim 11, further comprising a bearing housing coupled to the tub bracket and supporting a rotating shaft of the motor. 15. The washing machine according to claim 14, wherein a damping device for reducing vibration generated by rotation of the motor is connected to the bearing housing. The washing machine according to any one of claims 11 to 15, wherein the tub body is directly supported by the cabinet.

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