KR20070046451A - Washing machine - Google Patents

Abstract

The washing machine according to the present invention includes a main body case 10 forming an external appearance, a tub 20 provided inside the main body case 10, and a damper 71 for supporting the tub 20 to the main body case 10. To prevent the tub 20 from hitting the body case 10 by vibration or unbalance, the vibration preventing member 80 is installed between the tub 20 and the damper 71. According to the present invention, since the tub 20 is supported by the anti-vibration member 80 capable of absorbing vibration, even if the washing tub 30 installed inside the tub 20 is eccentrically rotated tub 20 is greatly It does not oscillate, which reduces the vibration and noise of the entire washing machine.

Description

Washing machine

1 is a cross-sectional view schematically showing a washing machine according to a preferred embodiment of the present invention.

Figure 2 is a perspective view showing an extract of the vibration preventing member of the washing machine according to a preferred embodiment of the present invention.

3 is a perspective view for explaining a method of installing a vibration preventing member of a washing machine according to a preferred embodiment of the present invention.

 * Description of symbols on the main parts of the drawings *

 10 ... body case 20 ... tub

 21 ... Fixed bracket 22 ... Support bracket

 30 ... washing tank 40 ... pulsator

 50 ... drive motor 60 ... clutch device

 70 ... suspension 71 ... damper

 72 Suspension cap 80 Vibration resistant member

 81 ... body 82, 84 ... first and second coupling

 83,85 ... 1,2 inserts 86,88 ... 1,2 reinforcement inserts

The present invention relates to a washing machine, and more particularly, to a washing machine having improved the support structure of the tub to reduce the generation of vibration and noise due to the eccentric rotation of the washing tub installed inside the tub.

In general, a washing machine has a method of performing washing by stirring laundry with a pulsator rotatably installed in a washing tank, and a method of executing washing by rotating a drum containing laundry.

Among them, washing machines using pulsators are commonly used because of low price of products. A washing machine using such a pulsator includes a main body case forming an external appearance, a tub supported inside the main body case, a washing tank rotatably installed in the tub, and a forward / reverse rotation on the bottom of the washing tank, and washing the laundry. A pulsator to be stirred, a drive motor installed outside the tub, a clutch device to selectively rotate the washing tank and the pulsator by receiving a driving force from the drive motor, a water supply device for supplying washing water into the tub, It includes a drain for discharging the wash water in the tub to the outside.

In the washing machine having such a configuration, the laundry is introduced while the laundry introduced into the washing tank is stirred in the washing water containing the detergent by the rotation of the pulsator. After washing, the washing water in the washing tank and tub is discharged to the outside through the drainage device, and only the laundry remains inside the washing tank. After washing is completed, dehydration is performed, and during dehydration, the driving force of the driving motor is transmitted to the washing tank by the clutch device, and the water contained in the laundry is removed by centrifugal force while the washing tank rotates.

On the other hand, when the laundry contained in the washing tank during washing or dehydration is biased to one side, a problem that the washing tank and the tub hit by the eccentric rotation of the washing tank occurs. Therefore, a suspension device is installed between the main body case and the tub in order to prevent vibration generated between the washing tub and the tub.

Korean Laid-Open Utility Model No. 1999-0038674 discloses a washing machine equipped with such a suspension device.

The suspension device disclosed in Korean Utility Model Publication No. 1999-0038674 includes a damper connecting the main body case and the tub, a suspension cap supporting the lower portion of the damper so that the damper can be reciprocated and integrally coupled to the tub, and a suspension It includes a spring cover installed in the lower portion of the cap, and a damping spring is coupled to the lower end of the damper is installed elastically changeable inside the spring cover.

However, in the conventional washing machine, the lower end of the damper is connected to only one side of the lower end of the tub, so that the tub is installed in a state of being suspended by the damper. Is generated.

The present invention is to solve the above problems, to provide a washing machine that can reduce the vibration and noise generated by the eccentric rotation of the tub by improving the support structure of the tub so that the tub installed in the tub does not swing. The purpose is.

Washing machine according to the present invention for achieving the above object is provided with a main body case forming an appearance, a tub installed inside the main body case, and a damper for supporting the tub to the main body case, the tub is vibrated or A vibration preventing member is installed between the tub and the damper to prevent it from hitting the main body case by unbalance.

In the present invention having such a configuration, the vibration preventing member includes a first coupling portion coupled to the tub, a second coupling portion coupled to the damper, and a body connecting the first and second coupling portions. Can be done.

Here, one side of the tub is provided with a support bracket having a coupling hole, the first coupling portion is provided with a first through hole corresponding to the coupling hole, the first coupling portion is a fastening member is the first through hole And it can be coupled to the support bracket by being inserted into the coupling hole.

In addition, the second coupling part may be provided with a second through hole into which the damper is inserted.

In addition, the first and second coupling parts may be provided with first and second insertion holes, respectively, and the respective first and second reinforcing inserts having the first and second through holes may be coupled to the respective insertion holes. .

In addition, the body is preferably made of a curved bar (bar) shape.

In addition, the body, the first and the second coupling portion is made of a rubber material, the first and second reinforcement insert is preferably made of a plastic mold.

Hereinafter, a washing machine according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a cross-sectional view schematically showing a washing machine according to a preferred embodiment of the present invention, Figure 2 is a perspective view showing an anti-vibration member of the washing machine according to a preferred embodiment of the present invention, Figure 3 is a preferred embodiment of the present invention It is a perspective view for demonstrating the method of installing the vibration prevention member of the washing machine by an example.

As shown in FIG. 1, a washing machine according to a preferred embodiment of the present invention includes a main body case 10 forming an exterior of a washing machine, a tub 20 installed inside the main body case 10, and containing wash water, To drive the washing tub 30 rotatably installed in the tub 20, the pulsator 40 rotatably installed at the bottom of the tub 30, and the washing tub 30 and the pulsator 40. Drive motor 50 and clutch device for 60, the suspension device 70 for supporting the tub 20 to the main body case 10, and coupled to the tub 20 to reduce the occurrence of shaking of the tub 20 It is made to include a vibration preventing member (80).

A main body cover 11 covering the upper part of the main body case 10 is installed on the upper part of the main body case 10, and a control panel (not shown) for controlling the operation of the washing machine is installed on the upper surface of the main body case 10. do. In addition, a water supply device 12 including a water supply pipe 13 and a water supply valve 14 is installed at an upper side of the main body case 10, and wash water contained in the tub 20 is provided at a lower side of the main body case 10. Drainage device 15 including drain pipe 16 and drain valve 17 for discharging to the outside is installed.

The tub 20 is installed in the center of the body case 10 so as to receive the washing water through the water supply device 12. The upper part of the tub 20 is opened, and a plurality of fixing brackets 21 to which the suspension device 70 is coupled are arranged at regular intervals around the lower outer circumference of the tub 20. In addition, a plurality of support brackets 22 to which the anti-vibration member 80 is coupled are disposed around the upper portion of the tub 20 at intervals similar to that of the fixing bracket 21.

The washing tub 30 is rotatably installed in the center of the tub 20, and includes a plurality of through holes 31 so that the inner space is connected to the inner space of the tub 20. The upper part of the washing tub 30 is opened, and the lower part of the washing tub 30 is coupled to the dehydration shaft 61 connected to the clutch device 60.

The pulsator 40 is for stirring the laundry flowing into the washing tub 30 together with the washing water. The pulsator 40 is supported by the washing shaft 62 and rotatably installed at the lower center of the washing tub 30.

The drive motor 50 is coupled to the outer lower portion of the tub 20, the clutch device 60 receives the power of the drive motor 50 through the drive belt 51 is installed in the outer lower center of the tub 20. do. The clutch device 60 selectively rotates the dehydration shaft 61 and the washing shaft 62, slows down the rotational speed of the pulsator 40, and performs a function of a brake to stop the rotation of the washing tub 30. do.

Suspension device 70 is usually provided with four to suspend the tub 20 to the main body case 10. The suspension device 70 is a damper 71 connecting the main body case 10 and the tub 20, and a damping spring coupled to the lower end of the damper 71 to cushion the vibration of the tub 20 (not shown). And a suspension cap 72 in which the damping spring is accommodated. The upper end of the damper 71 is coupled to the upper portion of the main body case 10, and the lower end thereof is accommodated in the suspension cap 72 in a state in which the damping spring is coupled. The suspension cap 72 is coupled to the fixing bracket 21 provided on the lower outer side of the tub 20.

The suspension device 70 having such a configuration is similar in structure and operation to the conventional one described above, and damps the vibration generated in the washing tub 30 or the tub 20 during washing or dehydration by the action of the damping spring.

The anti-vibration member 80 connects the upper portion of the damper 71 and the tub 20 to suppress the occurrence of shaking of the tub 20. As shown in FIG. 2, the vibration preventing member 80 includes a body 81, first and second coupling parts 82 and 84 provided at both ends of the body 81, and each coupling part ( And first and second reinforcement inserts 86 and 88 coupled to 82 and 84.

Body 81 is formed of a somewhat curved bar (bar) to effectively suppress the transmission of vibration.

A first insertion hole 83 is provided in the first coupling portion 82, and a first reinforcement insert 86 having a first through hole 87 is inserted into and coupled to the first insertion hole 83. In addition, a second insertion hole 85 is provided in the second coupling part 84, and a second reinforcement insert 88 having a second through hole 89 is inserted into and coupled to the second insertion hole 85. The diameter of the first through hole 87 of the first reinforcement insert 86 has a size corresponding to the diameter of the bolt B inserted therein, and the diameter of the second through hole 89 of the second reinforcement insert 88. The diameter has a size corresponding to the diameter of the damper 71 inserted therein.

The body 81 and the first and second coupling parts 82 and 84 are made of a rubber material having excellent vibration absorption, and the first and second inserts 86 and 88 are made of a plastic mold resistant to deformation. Is done.

As shown in FIG. 3, the anti-vibration member 80 of this configuration is secured to the first and second coupling portions 82 and 84 after the first and second reinforcement inserts 86 and 88 are fixed. A fastening means such as bolt B passes through the first through hole 87 of the first reinforcement insert 86 and is inserted into the coupling hole 23 of the support bracket 22 so that the tub 11 (see FIG. 1) and The damper 71 is inserted into the second through hole 89 of the second reinforcement insert 88 to be engaged with the suspension device 70 (see FIG. 1).

Hereinafter, with reference to the accompanying drawings will be described the operation of the washing machine according to a preferred embodiment of the present invention.

As shown in FIG. 1, after the laundry is contained in the washing tub 30 and the washing water is supplied to the washing tub 30 and the tub 20 together with the detergent through the water supply device 12, the washing instruction is driven. The driving force of the motor 50 is transmitted to the washing shaft 62 through the clutch device 60 to rotate the pulsator 40. Rotation of the pulsator 40 washes laundry in the washing tank 30 while washing with washing water.

When washing is completed, the laundry inside the washing tub 30 and the tub 20 is discharged to the outside through the drainage device 15. When the wash water is discharged from the tub 20 and only the wet laundry is left in the washing tub 30, when dehydration is performed, the driving force of the driving motor 50 is transmitted to the dehydration shaft 61 through the clutch device 60 to wash the tub 30. As the water rotates, moisture is released from the laundry by centrifugal force.

When the operation of the washing machine is made in this way, in particular, when dehydration occurs when the laundry is dehydrated when the washing tub 30 rotates at a high speed, the washing tub 30 is eccentrically rotated and the vibration is transmitted to the tub 20. At this time, since the vibration preventing member 80 absorbs the vibration of the tub 20 and the suspension device 70 and the vibration preventing member 80 support the tub 20 so that the tub 20 does not swing significantly. , The vibration transmitted to the tub 20 is not easily transmitted toward the main body case 10.

In addition, since the vibration preventing member 80 supports the upper portion of the tub 20, the tub 20 is not oscillated with the washing tub 30 by synchronizing with the shaking of the washing tub 30. Therefore, the eccentric rotation width of the washing tub 30 is not amplified, thereby reducing the overall vibration and noise during operation of the washing machine.

According to the present invention described above, since the upper portion of the tub supported by the suspension case is supported by the vibration preventing member capable of absorbing vibration, the tub does not oscillate greatly even if the washing tub installed inside the tub is eccentrically rotated. Will not.

Thus, the overall vibration and noise of the washing machine is reduced.

      The present invention described above is constructed and acted as shown and described.

It is not limited. That is, the present invention is within the spirit and scope of the appended claims

Various changes and modifications are possible.

Claims (7)

A washing machine comprising a main body case forming an external appearance, a tub installed inside the main body case, and a damper for supporting the tub on the main body case, Washing machine, characterized in that the vibration preventing member is installed between the tub and the damper to prevent the tub from hitting the main body case by vibration or unbalance. The method of claim 1, The vibration preventing member includes a first coupling portion coupled to the tub, a second coupling portion coupled to the damper, and a body connecting the first and second coupling portions. The method of claim 2, One side of the tub is provided with a support bracket is provided with a coupling hole, the first coupling portion is provided with a first through hole corresponding to the coupling hole, the first coupling portion is a fastening member is the first through hole and the coupling Washing machine, characterized in that coupled to the support bracket by being inserted into the ball. The method of claim 3, wherein Washing machine, characterized in that the second coupling portion is provided with a second through hole in which the damper is inserted. The method of claim 4, wherein The first and second coupling portions are provided with first and second insertion holes, respectively, and the first and second reinforcing inserts having the first and second through holes are coupled to the respective insertion holes, respectively. washer. The method of claim 5, The body is a washing machine, characterized in that formed in the form of a curved bar (bar). The method of claim 6, The body, the first and the second coupling portion is made of a rubber material, wherein the first and second reinforcement inserts are made of a plastic mold.

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