KR100198350B1 - Device for absorbing the vibration of a washing machine - Google Patents

Abstract

The present invention is installed in the lower part of the washing tank absorbing means for absorbing a part of the washing water so that the center of gravity of the washing tank is located in the lower portion during the initial dehydration, so that the vibration width is reduced and is absorbed by centrifugal force during the normal dehydration progress It relates to a vibration damping device of a washing machine to reduce the load of the motor by installing a discharge means for the natural discharge of the washing water, in particular, the water tank is installed hanging inside the main body and the power switching means is installed on the bottom; A washing tank and a stirring blade installed inside the water tank and selectively rotating by the power switching means; An absorption unit installed inside the washing tank to absorb a portion of the washing water; And is formed in the lower portion of the washing tank is provided with a discharge means for discharging the washing water of the absorbing means toward the tank when centrifugal force is applied to the washing tank.

Description

Vibration dampening device of washing machine

The present invention relates to a vibration damping device of a washing machine, and in particular, by installing an absorbing means for absorbing a part of the washing water and a discharge means for discharging by the centrifugal force when the absorbed washing water is dewatered in the lower part of the washing tank, It relates to a vibration damping device of the washing machine to the vibration is alleviated.

In general, as shown in FIG. 1, a washing tank 2 in which a predetermined amount of washing water is freshly installed is installed in a rectangular body 1. The water tank 2 is configured in a cylindrical shape so as not to interfere with the rotational water generated in the washing process, and is mounted to the inside of the main body 1 by the hook rod 7. That is, dampers 7a are installed in all directions below the outer circumferential surface of the water tank 2, and the lower ends of the hook rods 7 are coupled to the respective dampers 7a.

In addition, each upper end of the hook rod 7 coupled to each damper (7a) is installed hanging through the bracket on the upper end of the inner peripheral surface of the main body (1). In addition, the cylindrical washing tank 3 is installed inside the water tank 2 in a rotatable state. The washing tank 3 is formed with a myriad of holes 3a penetrating the inner and outer peripheral surfaces. These holes 3a flow washing water supplied into the washing tank 3 toward the water tank 2 so that the level of the washing tank 3 and the water tank 2 coincide. In addition, these holes (3a) discharges the washing water generated from the wet laundry in the dehydration process toward the water tank (2). And the balance weight (3b) is installed on the upper inner peripheral surface of the washing tank 3 to mitigate the vibration of the washing tank (3) when dewatering.

In addition, the stirring blade 4 is installed on the inner bottom of the washing tank 3 so as to be able to rotate forward and backward. Stirring blade (4) is to be rotated forward and reverse in the washing process, to stir the wash water supplied into the washing tank (3) to produce a rotary water flow. The washing is rubbed and washed by the rotational flow generated in this way. In addition, the power switching means 6 is installed in the center of the bottom surface of the water tank (2). The power switching means 6 has a washing shaft (6a) and a dehydration shaft (6b) is formed on the upper side, the washing shaft (6a) is combined with the stirring blade (4) and the dehydration shaft (6b) on the bottom of the washing tank (3) Combined. The power switching means 6 is also rotated by the motor 5 coupled to the bottom of the water tank 2.

In the conventional washing machine configured as described above, washing is carried out in the state in which the laundry is contained in the washing tub 3 and the washing water is supplied. In the washing process, when the motor 5 rotates forward and backward, its rotational force is transmitted to the power switching means 6 and decelerated by the power switching means 6, and then the reverse rotational power is passed through the washing shaft 6a toward the stirring blade 4. Delivered. At this time, when the stirring blade (4) is rotated forward and reverse, the washing water causes a rotational water flow, and the washing progresses as the laundry is rubbed against each other by the rotational water flow.

In addition, the water tank 2 is vibrated when the stirring blade 4 is rotated forward and reverse during the washing process. The water tank (2) is suspended in the main body (1) through the hook rod 7 is generated vibration. At this time, the vibration generated by the damper (7a) formed in the lower outer peripheral surface of the water tank 2 is reduced by the vibration of the main body (1). In addition, after the washing is completed, the washing water is drained and then dehydration proceeds. When the motor 5 rotates at a high speed in the dehydration process, the washing shaft 6a and the dewatering shaft 6b are rotated together by the power switching means 6 at a high speed, and the washing tank 3 is rotated at a high speed.

When the washing tank 3 is rotated at a high speed, centrifugal force is applied to the washing feeling so that the washing feeling spreads toward the inner circumferential surface of the washing tank 3, and the washing water attached to the washing feeling is dehydrated. In addition, the dewatered wash water is discharged toward the water tank 2 along a plurality of holes 3a formed on the inner and outer circumferential surfaces of the washing tank 3 and the discharged washing water is drained to the outside. In addition, the washing tank (3) is shaken during the dehydration process. In particular, when the initial dehydration of the laundry is concentrated to one side inside the washing tank 3, the vibration is generated due to the unbalance of the washing tank (3). As such, when the initial feeling of dehydration is biased toward one side of the washing tank 3, the bias is compensated by the balance weight 3b, and vibration generated during dehydration is partially absorbed by the damper 7a of the water tank 2. The trembling of 1) is alleviated.

However, in the conventional washing machine, since the lower end of the water tank 2 is installed by hanging the inside of the main body 1 by the damper 7a, the vibration width increases toward the upper side of the water tank 2. The washing tank 3 is installed inside the water tank 2 and the washing tank 3 is rotated in a state in which the washing tank 3 is coupled to the dehydration shaft 6b of the power switching means 6 coupled to the bottom of the water tank 2. 3) The vibration width also increases to the upper side. Therefore, there is a disadvantage that severe vibration occurs during initial dehydration.

That is, since the balance weight 3b is formed on the upper end of the washing tank 3, the center of gravity of the washing tank 3 is located above. When dehydration is performed in the state in which the center of gravity of the washing tank 3 is located in the upper side, when the initial dehydration is carried out, the laundry feeling is concentrated to one side by centrifugal force. Unbalanced is compensated for. At this time, as the washing tank 3 is rotated while the fluid is in the opposite direction of the washing, the vibration width of the upper side of the washing tank 3 is increased so that the shaking is severely generated, and the shaking is transmitted to the damper 7a of the tank 2. do.

At this time, the vibration that is not alleviated by the damper 7a is transferred to the main body 1 through the hook rod 7 so that vibration is severely generated during initial dehydration. In order to improve this, recently, a technique for installing a balance weight in the lower part of the washing tank so that the center of gravity of the washing tank is located at the lower side is being applied for the first application. However, the balance weight located in the lower part of the washing tank relieves the vibration during initial dewatering to some extent, while the load of the motor 5 is increased during dehydration due to the weight of the fluid charged inside the balance weight, and the power consumption is increased. There are disadvantages, such as shortening the life of 5).

The present invention was developed in view of the conventional problems, and an object of the present invention is to install an absorbing means for absorbing a part of the wash water in the lower part of the washing tank so that the center of gravity of the washing tank is located in the lower part when the initial dehydration, the vibration width is The present invention also provides a vibration damping device for a washing machine in which a load of a motor is reduced by installing a discharge means through which the washing water absorbed by centrifugal force is naturally discharged while being dehydrated normally.

1 is a cross-sectional view of a conventional washing machine,

Figure 2 is an exploded perspective view of the vibration damping device of the present invention,

3 is a cross-sectional view of the washing machine of the present invention;

Figure 4 is a partial cross-sectional view of the vibration damping device of the present invention.

Explanation of Signs of Major Parts of Drawings

10-body, 11-tank,

12-washing tub, 13-stirring blade,

15-power switching means, 20-absorbing means,

21-absorber plate, 30-discharge means,

31-space part, 32-vent hole,

33-cover, 34-absorber.

In order to achieve the above object, the present invention includes a tank installed by hanging inside the main body and a power switching means is installed on the bottom; A washing tank and a stirring blade installed inside the water tank and selectively rotating by the power switching means; An absorption unit installed inside the washing tank to absorb a portion of the washing water; And it is formed in the lower portion of the washing tank characterized in that it comprises a discharge means for discharging the washing water of the absorbing means toward the tank when centrifugal force is applied to the washing tank.

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

Figure 2 is an exploded perspective view of the vibration damping device of the present invention. An absorbing means 20 for absorbing a part of the washing water is installed in the lower part of the washing tank 12. The absorbing means 20 absorbs the washing water in a saturated state when the washing tank 12 is stopped in the washing process. In addition, when the washing tank 12 is rotated at a high speed in the process of dehydration to increase the centrifugal force, the wash water absorbed in proportion thereto is gradually dehydrated. The absorbing means 20 is to absorb the washing water in a saturated state to reduce the vibration by positioning the center of gravity of the washing tank 12 in the lower side during the initial dehydration.

Absorbing means 20 is provided with a cylindrical absorbing plate 21 fitted into the washing tank (12). The absorbent plate 21 is made of a porous sponge material which is light in weight and excellent in absorbing wash water, and a shaft hole through which the washing shaft 15a of the power switching means 15 to be described later penetrates in the center of the absorbent plate 21. 22 is formed in the center.

In addition, a discharge means 30 to which the absorbing plate 21 of the absorbing means 20 is fitted is provided below the washing tank 12. The discharge means 30 guides the absorbent plate 21 to sufficiently absorb a part of the wash water during the washing process, while guiding the absorbed wash water to dewater when dewatering. The discharge means 30 is provided with a space 31 for receiving the absorbing plate 21 in the lower portion of the washing tank 12 and the space 31 is the bottom of the washing tank 12 and the stirring blade 13 to be described later The cover 33 is disposed between the upper and upper sides of the absorbing plate 21 and is restrained. In addition, the cover 33 is fastened and fixed with a screw 39 to the boss 36 formed to protrude in all directions on the inner circumferential surface of the space portion 31, and the incision grooves are disposed on the outer circumferential surface of the absorber plate 21 so as not to interfere with the boss 36. A plurality of 23) is formed.

In addition, on the surface of the lid 33, a myriad of absorption holes 34 communicating with the space 31 are formed. The absorption hole 34 guides the washing water into the space 31, and when the washing water is guided into the space 31 through the absorption hole 34, the absorption plate 21 installed in the space 31 is provided. ) Is absorbed. In addition, a number of discharge holes 32 are formed on the side wall and the bottom of the washing tank 12 surrounding the space 31 so as to communicate with the absorbing plate 21.

The discharge hole 32 serves to discharge the wash water absorbed by the absorber plate 21 during the dehydration process. When the washing tank 12 is rotated at a high speed, centrifugal force is applied to the absorber plate 21. The wash water absorbed by the absorber plate 21 is dewatered. In addition, the dewatered wash water flows into the space 31 and is discharged toward the water tank 11 through the discharge hole 32 and discharged to the outside by the drain pipe 17 to be described later. In addition, a hollow guide tube 35 is placed in the center of the space 31, and the shaft hole 23 in the center of the absorber plate 21 is fitted to the outer circumferential surface of the guide tube 35. In addition, a fitting hole 37 is formed at the center of the cover 33 to be coupled to the upper outer circumferential surface of the guide tube 35. The washing shaft 15a is inserted into the guide tube 35 to protrude upward of the cover 33. do.

3 is a cross-sectional view of the washing machine of the present invention. The water tank 11 is installed inside the rectangular main body 10 of which the upper part is opened, and the lid 18 is installed on the open upper part of the main body 10 to open and close the upper part of the main body 10. In addition, the water tank 11 is provided with a damper 16a formed in all directions below the outer circumferential surface to hang inside the main body 10. That is, a plurality of hook rods 16 are coupled to the inner upper portion of the main body 10 in all directions, and a lower end of each hook rod 16 is connected to the upper portion of the damper 16a. When vibration occurs in the water tank 11 in such a state, it is alleviated by each damper 16a.

In addition, the washing tank 12 containing the washing water and the laundry in the water tank 11 is installed to be rotatable. The washing tank 12 has a myriad of holes 12a communicating with the water tank 11 at the side thereof, and flows the washing water supplied into the washing tank 12 toward the water tank 11. That is, when the wash water is supplied into the washing tank 12, the washing water flows through the holes 12a toward the water tank 11 so that the water level of the washing tank 12 and the water tank 11 coincide. In addition, the space 31 of the discharge means 30 is formed in the lower portion of the washing tank 12. The space portion 31 is formed between the stirring blade 13 and the bottom of the washing tank 12, and a myriad of discharge holes 32 are formed on the side and bottom of the washing tank 12 surrounding the space 31. . These discharge holes 32 have a function of discharging toward the water tank 11 when the wash water absorbed by the absorber plate 21 is dehydrated by centrifugal force during the dehydration process.

In addition, a guide tube 35 through which the washing shaft 15a of the power switching means 15 coupled to the center of the bottom surface of the water tank 11 is protruded and formed inside the space 31 in the center of the space 31. The absorber plate 21 of the absorber 20 is placed thereon. Absorbing plate 21 is made of a porous sponge material to absorb the wash water in a saturated state. In addition, the shaft hole 23 is inserted into the outer peripheral surface of the guide tube 35 in the center of the absorber plate 21 is formed, the cover 33 is installed on the upper portion of the absorber plate 21. And a plurality of absorption holes 34 for guiding the wash water toward the absorbent plate 21 is formed on the surface of the absorbent plate 21 and fitted to the upper outer peripheral surface of the guide tube 35 in the center of the cover 33 A ball 37 is formed. In addition, the washing shaft 15a of the power switching means 15 coupled to the bottom of the water tank 11 protrudes toward the upper center of the lid 33 through the guide tube 35 and the fitting hole 37, and thus the washing shaft protrudes. The stirring blade 13 is coupled to the top of the (15a).

The stirring blade 13 causes rotational water flow, and stirs the washing water supplied to the washing tank 12 to generate the rotational water flow. That is, when the stirring blade 13 repeats the forward and reverse rotation by the operation of the power switching means 15, the rotation flow is generated and the washing is rubbed on the rice by the rotation flow generated at this time. In addition, a motor 14 for operating the power switching means 15 is installed on the bottom surface of the water tank 11 to rotate the power switching means 15 through the belt 14a. In addition, the dehydration shaft 15b of the power switching means 15 is coupled to the center of the bottom surface of the washing tank 12 through the bracket 15c. When the dehydration shaft 15b is rotated at a high speed during dehydration, the washing tank 12 rotates in one direction. The laundry is dehydrated by centrifugal force. In addition, a drain pipe 17 communicating with the outside is installed at one side of the bottom surface of the water tank 11, and a drain valve 17a is installed at the drain pipe 17 to adjust the drainage of the wash water.

4 is a partial cross-sectional view of the vibration damping device of the present invention. In the lower part of the washing tub 12, the space 31 is formed in a shape smaller than that of the washing tub 12. Therefore, the locking jaw 38 is formed near the boundary between the space 31 and the washing tub 12, and the outer circumferential surface of the locking jaw 38 is placed when the cover 33 is placed. In addition, the plurality of bosses 36 are installed at a predetermined height in all directions on the inner circumferential surface of the space part 31, and the incision grooves 23 are disposed on the outer circumferential surfaces of the absorber plate 21 placed on the space part 31 so as not to interfere with the corresponding boss 36. ) Is formed. In other words, when the absorbing plate 21 is placed inside the space 31, the cutout 23 formed on the outer circumferential surface of the absorber plate 21 wraps around the outer circumferential surface of the boss 36. (33) is placed. At this time, when the screw 39 is fastened to the boss 36 from the top of the cover 33, the cover 33 is coupled to the upper portion of the space 31 while pressing the absorber plate 21.

According to the present invention configured as described above, the space 31 of the discharge means 30 is formed in the lower portion of the washing tank 12, and the absorbing plate 21 of the absorbing means 20 is fitted into the space 31. That is, the absorbent plate 21 made of a porous sponge material is inserted into the space 31 and the cover 33 is covered thereon. At this time, when the cover 33 is raised to the boss 36 protruding in all directions of the space 31 and the screw 39 is fastened to the boss 36, the cover 33 is fixed. When the absorbing plate 21 is fitted into the space 31, a plurality of cutouts 23 formed on the outer circumferential surface are inserted into the outer circumferential surface of the corresponding boss 36 so that they do not interfere with the cover 33. The outer circumferential surface of the cover 33 is supported by being fastened to the boss 36 in a state in which the outer circumferential surface is placed on the engaging jaw 38 formed near the boundary between the washing tubs 12.

In addition, when the absorbing plate 21 is fitted into the space 31, the shaft hole 22 formed at the center of the absorbing plate 21 is fitted to the outer circumferential surface of the guide tube 35 of the space 31 and the cover 33. The fitting hole 37 formed in the center of the cover 33 in the state placed on the upper portion of the space 31 is coupled to the upper outer peripheral surface of the guide tube (35). In addition, the washing shaft 12 of the power switching means 15 installed in the center of the bottom surface of the water tank 11 protrudes to the upper portion of the lid 33 through the guide pipe 35 and in this state the bottom surface of the stirring blade 13 The center is coupled to the upper end of the washing shaft 15a. At this time, the stirring blade 13 is located on the top of the cover 33, the dehydration shaft 15b of the power switching means 15 is coupled to the center of the bottom surface of the washing tank 12 through the bracket (15c).

In the present invention assembled as described above, the absorbing means 20 and the discharge means 30 are formed on the bottom surface of the washing tank 12. In this case, the absorbing means 20 does not generate a load unless the wash water is supplied into the washing tank 12. That is, the material of the absorbing plate 21 constituting the absorbing means 20 is made of a sponge so that the light weight does not absorb the wash water so that the load is not applied to the lower portion of the washing tank 12. Therefore, the load on the whole washing machine is reduced, which is convenient for handling. In addition, when the laundry is supplied to the washing tank 12 and the washing water is supplied, washing proceeds.

In addition, when the wash water is supplied, some wash water is introduced into the space 31 through the absorption hole 34 of the cover 33, and the washed water is absorbed into the absorber plate 21. In addition, the wash water supplied into the washing tank 12 flows into the water tank 11 through a plurality of holes 12a formed in the side wall, so that the water level of the washing tank 12 and the water tank 11 coincides with each other. Some of the wash water flowed in is absorbed toward the absorbing plate 21 through the discharge hole 32 formed in the side wall and bottom of the space 31.

In addition, when the absorbent plate 21 absorbs the wash water, the absorbed wash water may not escape unless the external force, that is, the centrifugal force, is applied to the absorber plate 21. In this state, when the power switching means 15 is operated by the driving of the motor 14, the rotational force is transmitted to the stirring blade 13 by the washing shaft 15a. At this time, the stirring blade 13 is rotated in both directions by the motor 14, which is rotated forward and reverse, causing a rotational water flow and when the rotational water flow occurs, washing is rubbed with each other.

Also, dehydration proceeds after washing. When the drain valve 17a is opened in the process of dehydration, the washing water in the washing tank 12 and the water tank 11 is drained to the outside through the drain pipe 17. In the state where the drainage is completed, the wash water absorbed by the absorption plate 21 in the space 31 remains in the space 31. Since the wash water absorbed by the absorbent plate 21 is not discharged naturally without external force being applied, the wash water 12 is positioned downward by the absorbent plate 21 in the state where the wash water is drained. do. In this state, when the power switching means 15 is driven by the driving of the motor 14, the washing shaft 15a and the dehydration shaft 15b are rotated at high speed, and dehydration proceeds.

When the dehydration shaft 15b and the washing shaft 15a are rotated at high speed, the stirring blade 13 and the washing tank 12 are rotated at high speed in one direction, and the laundry is dehydrated. In addition, in the initial stage of dehydration, the vibration is generated while the laundry is concentrated to one side of the washing tank 12. This is because centrifugal force is not generated inside the washing tub 12 because the rotation speed is slow during the initial rotation of the motor 14. In this state, the laundry is oriented to one side, and the washing tub 12 rotated in such a state that the laundry is oriented is naturally generated by vibration. At this time, the vibration is alleviated by the absorbing plate 21 installed inside the space 31 under the washing tank 12. The absorbent plate 21 is in the state in which the wash water is absorbed, so that the center of gravity of the washing tank 12 is located below the centrifugal force during initial dehydration.

Therefore, even if vibration is generated by the laundry contained in the washing tank 12, the vibration is alleviated by the absorber plate 21. In addition, when the motor 14 is rotated at the normal speed, the washing is spread to all sides of the washing tank 12 by the centrifugal force, and the balance is naturally maintained. Therefore, vibration is naturally reduced, and in this process, the wash water attached to the laundry is dehydrated by centrifugal force. In addition, when the laundry feeling is dewatered, the wash water absorbed by the absorber plate 21 is naturally dehydrated by centrifugal force. The dewatered wash water is discharged into the water tank 11 through the discharge hole 32 formed in the side wall of the washing tank 12 surrounding the space 31. Therefore, while the washing tank 12 is rotated normally at high speed, the washing water of the absorbing plate 21 is completely dehydrated while dehydration proceeds, thereby reducing the load transmitted to the dehydration shaft 15b.

As described above, according to the present invention, when the wash water is supplied to the inside of the washing tank in the state where the absorbing means and the discharge means are respectively installed in the lower portion of the washing tank, the washing proceeds in a state where a part of the washing water is absorbed by the absorbing means. In addition, when the washing water is drained after the completion of washing and dehydration proceeds, the vibration is alleviated by placing the center of gravity of the washing tank under the absorbing means absorbed by the washing water. That is, centrifugal force is not generated because the rotation speed of the washing tank is slow during initial dehydration.

At this time, the vibration is generated as the laundry is directed to one side of the washing tank, and the vibration generated at this time is alleviated by the absorbing plate of the lower washing tank. The absorbent plate pressurizes the lower part of the washing tank while absorbing the washing water. As such, when the lower part of the washing tank is rotated in a pressurized state, the shaking of the washing tank is alleviated even if the laundry is rotated with some concentrated state. In addition, when the washing tank is rotated at a high speed while the rotational force of the motor is normal, the washing is spread to all sides of the washing tank by the centrifugal force, and vibration is naturally reduced and dehydrated by the centrifugal force. In addition, the wash water absorbed by the absorber plate is dehydrated by centrifugal force and discharged toward the water tank along the discharge hole formed in the space, thereby reducing the weight of the absorber plate. Therefore, when the weight of the absorbing plate pressurizing the washing tank is reduced, the load of the deshrinkage is naturally reduced, thereby reducing the power consumption of the motor. In addition, the weight of the washing tank is reduced because it is not necessary to install a separate balance weight on the upper portion of the washing tank.

Claims (4)

A water tank 11 installed inside the main body 10 and having a power switching means 15 installed at a bottom thereof; A washing tank 12 and a stirring blade 13 installed inside the water tank 11 and selectively rotated by the power switching means 15; Absorbing means (20) installed inside the washing tank (12) to absorb a portion of the washing water; The vibration of the washing machine is formed in the lower portion of the washing tank 12 and has a discharge means 30 for discharging the washing water of the absorbing means 20 toward the water tank 11 when centrifugal force is applied to the washing tank 12. Mitigator. According to claim 1, The discharge means 30 is provided with a space portion 31 between the bottom of the washing tank 12 and the stirring blade 13 and the absorbing means 20 is the space portion 31 A cylindrical absorbing plate 21 is installed in the plurality of discharge holes for draining the wash water absorbed by the absorbing plate 21 on the side of the washing tank 12 corresponding to the space 31 ( 32) Vibration dampening device of the washing machine characterized in that it is formed. The vibration absorbing device of claim 2, wherein the absorbing plate (21) is a porous sponge that absorbs wash water and dehydrates when centrifugal force is applied thereto. According to claim 2, A cover 33 is provided to cover the upper portion of the space 31 and a plurality of absorption holes 34 for guiding the wash water toward the absorbent plate 21 on the surface of the cover 33 Vibration relief device of the washing machine characterized in that it is formed.