KR0139999Y1 - Structure for absorbing the vibration of automatic laundry machine - Google Patents

Abstract

It is possible to perform stable washing administration by reducing vibration and noise caused by unbalance of washing tank due to eccentricity of laundry during dehydration administration of automatic washing machine.

According to a preferred embodiment, the washing machine body (1) equipped with a control unit for selectively operating the washing stroke, and the damper (8) mounted inside the washing machine body (1) to store the wash water and to reduce the vibration generated during the dehydration stroke (8) Dehydration tank (2) having a washing tank (2), a rotary blade (5) rotatably mounted in the forward and reverse direction on the inner bottom of the washing tank (2) and a vibration preventing balancer of the washing tank (2) formed in an annular shape on the upper side ( In the anti-vibration device of the automatic washing machine having 4); Annular upper and lower balancers (11, 12) formed integrally on the upper side of the dehydration tank (4); And anti-vibration weights (13, 13A) accommodated in the upper and lower balancers (11, 12), respectively, to reduce the vibration of the washing tank (2) by being located in the opposite direction in which laundry is eccentric during dehydration administration. It provides an anti-vibration device of an automatic washing machine.

Due to this, vibration generated in the washing tank is reduced due to eccentricity of laundry and increase of laundry in the initial stage of dehydration of the automatic washing machine. As a result, the washing administration is performed stably, and the washing time is shortened. Prevention of vibration and shock that is generated has the advantage of preventing the impact on the structure and the driving unit of the washing machine to increase their durability.

Description

Vibration Prevention Device of Automatic Washing Machine

The present invention relates to an anti-vibration device of an automatic washing machine, and more particularly, to reduce the vibration and noise caused by the unbalance of the washing tank due to the eccentricity of the laundry during the dehydration operation of the automatic washing machine. It relates to an anti-vibration device of an automatic washing machine.

As schematically shown in FIG. 1, the automatic washing machine structure equipped with a vibration damping device according to the prior art is a state in which washing, rinsing, draining, and dehydrating strokes are programmed in advance by the microcomputer on the washing machine body 1. The control unit (not shown) for washing by selectively operating the corresponding button by the user at the upper cover (UPPER COVER) (1) is installed in a predetermined position, the washing water required for washing in the washing machine body (1) A washing tank 2 storing water as a predetermined level (LEVEL), one end of which is fixed to an upper side of the washing machine body 1 and the other end of which is fixed to a lower side of the washing tank 2 at its outer periphery. The damper (8) of the (SUSPENSION BAR) (7) is mounted to attenuate the vibration and noise generated during the dehydration stroke.

The dehydration tank (4) into which the laundry is put into the washing tank (2) is rotatably mounted due to the driving of the driving unit (3), and the dehydration tank (4) stops during washing and rinsing administration, and inside the dehydration administration. It is mounted to perform the dehydration stroke by rotating in one direction and the rotary blade (5) that is repeatedly rotatable in the forward and reverse direction, and the brine is filled in the upper side of the dehydrator (4) to reduce the vibration of the washing tank (2) during dehydration administration The liquid balancer LIQUID BALLANCER 9 is formed in an annular shape.

When the washing, rinsing, draining stroke of the automatic washing machine configured as described above is completed and the dehydrating stroke is started, the washing water is discharged from the washing tank 2 due to the rotation of the dehydration tank 4 and the rotary blade 5, and At the same time, as the weight of the laundry is reduced, the spring 8A of the damper 8 is restored in the compressed state. This reduces the vibration and noise generated by the unbalanced phenomenon of the washing tub 2 due to the core of the laundry during dehydration by the seal 8B of the damper 8 which is raised and lowered.

In addition, the salt water filled in the liquid balancer 9 formed on the upper side of the dehydration tank 4 is located in the outward direction of the liquid balancer 9 by centrifugal force due to the rotation of the dehydration tank 4. It moves along the through hole 9B of the partition 9A disposed inside the liquid balancer 9. Therefore, the vibration of the washing tank 2 caused by the eccentricity of the laundry during the rotation of the dehydration tank 4 is reduced (shown in FIG. 2B).

However, the damper 8 for damping the vibration of the washing tank 2 is a spring according to the center of gravity of the washing tank 2 in the dehydration tank 4 and the washing tank 2 in which there is no laundry and no washing water at all. The elastic modulus of 8A is set.

For this reason, when the laundry is more than a prescribed capacity or the laundry is eccentric to one side during the dehydration administration, the functions of the liquid balancer 9 and the damper 8 do not operate smoothly, and vibration and noise are severely generated. Unreasonable impact is applied to the assembly part and the driving part of the component to shorten the life of the parts and the durability is reduced.

In addition, if the washing administration is not performed stably in a pre-programmed order, some washing administration is repeated, the reliability of the product from the user is lowered.

Therefore, the object of the present invention, when the eccentricity of laundry and the capacity of the laundry during the dehydration administration of the automatic washing machine is more than the prescribed, it is possible to increase the reliability of the product by performing a stable washing administration by minimizing the occurrence of vibration caused by the shaking of the washing tank It is to provide an anti-vibration device of an automatic washing machine.

Another object of the present invention is to provide an anti-vibration device of an automatic washing machine, which can prevent the shock from being applied to the assembly structure and the driving part of the washing machine due to the vibration generated during the dehydration operation.

1 is a schematic view of a washing machine to which a conventional vibration damping device is applied.

Figure 2a is an operation of the anti-vibration device when the dehydration tank is stopped in the conventional washing machine.

Figure 2b is an operation of the anti-vibration device during the rotation of the dehydration tank in the conventional washing machine.

Figure 3a is an operation of the anti-vibration device when washing in the washing machine according to the present invention.

3b is an operation of the anti-vibration device when dehydrating in the washing machine according to the present invention.

Figure 4 is a graph comparing the prior art when applying the vibration preventing device according to the present invention to a washing machine.

5 is a schematic view of a washing machine to which the anti-vibration device of the present invention is applied.

* Explanation of symbols for main parts of the drawings

1: washing machine body 2: washing tank

3: drive unit 4: dehydration tank

5: Rotating wing 6: Upper cover

8: DAMPER 11: UPPER BALLANCER

12: Lower Balancer (LOWER BALLANCER)

13, 13A: Damping weight 14, 14A: Seating groove

15, 16: slope

An object of the present invention described above, a washing machine body (1) equipped with a control unit for selectively operating the washing stroke, and a damper mounted inside the washing machine body (1) to store the wash water and to reduce the vibration generated during the dehydration stroke Dehydration in which the washing tank (2) provided with (8), the rotary blade (5) rotatably mounted on the inner bottom of the washing tank (2) and the balancer for preventing vibration of the washing tank (2) are formed in an annular shape on the upper side. An anti-vibration device for an automatic washing machine having a tank (4), comprising: annular upper and lower balancers (11, 12) formed integrally with the upper side of the dehydration tank (4); And are respectively accommodated in the upper and lower balancers (11, 12), the laundry is located in the opposite direction in which the laundry is eccentric when dehydration administration, characterized in that it comprises a vibration preventing weight (13, 13A) to reduce the vibration of the washing tank (2) It is achieved by providing an anti-vibration device of an automatic washing machine.

According to a preferred embodiment of the present invention, the upper and lower balancers (11, 12) are formed in the number corresponding to the anti-vibration weight (13, 13A) on the bottom surface of each, it is seated at the washing stroke of the washing tank (2) It is further provided with seating grooves (14, 14A) for correcting the balance.

According to a preferred embodiment of the present invention, the upper and lower balancers (11, 12) to control the flow of the anti-vibration weight (13, 13A) and to receive a predetermined amount of oil to reduce the vibration of the washing tank (2) Is formed.

According to a preferred embodiment of the present invention, the size of the anti-vibration weight 13 accommodated in the upper balancer 11 is formed larger than that of the anti-vibration weight 13A accommodated in the lower balancer 12. .

According to a preferred embodiment of the present invention, the upper and lower balancers (11, 12), the upper and lower balancers (11, 12) are formed in the outer corners, respectively, to smooth out the vibration preventing weight (13, 13A) during dehydration administration It is further provided with inclined surfaces 15 and 16 for flowing.

According to a preferred embodiment of the present invention, the viscosity of the oil contained in the upper balancer 11 is higher than the viscosity of the oil contained in the lower balancer 12 is used.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are intended to assist in understanding the technical contents of the present invention, and thus the technical scope of the present invention is not limited.

As shown in FIG. 3 and FIG. 5, it is formed in the upper cover 6 mounted on the upper part of the washing machine body 1, and the washing, rinsing, draining and dehydrating strokes are pre-programmed by the microcomputer. Washing tank equipped with a control unit for washing by selectively operating the corresponding button, the washing unit is mounted inside the washing machine body (1) is equipped with a damper (8) to store the wash water as a constant level and to reduce the vibration generated during the dehydration stroke (2), and a spinneret (5) rotates in one direction and is repeatedly rotated in the forward and reverse directions inside the dehydration stroke and washing tank (2) The dehydration tank (4) in which an anti-vibration balancer is formed in an annular shape on the upper side (4) Since the configuration for, is applied in the same manner as shown in Figure 1, the detailed description of the configuration and operation thereof will be omitted, and the duplicate reference numerals are the same.

Therefore, according to a preferred embodiment of the present invention, the above-described upper and lower balancer (11, 12) of the tunnel type is formed integrally on the upper side of the dehydration tank (4), laundry is dehydrated in each of the upper and lower balancer (11, 12) Located in the opposite direction to the eccentric to accommodate a plurality of vibration damping weight 13, 13A formed of a metal to reduce the vibration generated in the above-described washing tank (2), washing on the bottom surface of each of the upper and lower balancers (11, 12) The seating grooves 14 and 14A, which are seated during the stroke and correct the balance of the washing tank 2, are formed in the number corresponding to the vibration preventing weights 13 and 13A, respectively.

The inclined surfaces 15 and 16 for smoothly moving the anti-vibration weights 13 and 13A during the dehydration stroke are formed at the inner and outer corners of the above-described injured parts balancers 11 and 12, and the upper and lower balancers 11 and 12. ) To accommodate the oil to reduce the vibration of the washing tank (2) by controlling the flow of the anti-vibration weight (13, 13A) to each, the viscosity of the oil contained in the upper and lower balancers (11, 12) is used, The anti-vibration weight 13 accommodated in the upper balancer 11 and the anti-vibration weight 13A accommodated in the lower balancer 12 are accommodated in varying sizes so as to adjust the microvibration of the washing tank 2.

That is, the size of the anti-vibration weight 13 accommodated in the upper balancer 11 is formed to be larger than that of the anti-vibration weight 13A accommodated in the lower balancer 12, and the oil accommodated in the upper balancer 11. The viscosity of that is higher than the viscosity of the oil contained in the lower balancer 12 is used.

Hereinafter, the operation of the vibration preventing device of the automatic washing machine according to the present invention configured as described above are as follows.

Washing water is stored in a predetermined amount in the above-described washing tank (2) and the weight of the washing tank (2) is maximized as a predetermined amount of laundry and powder detergent are put into the dehydrating tank (4), which is attached to the washing tank (2). The spring 8A of the damper 8 is in a compressed state, and at the same time the washing tank 2 is lowered by the elastic force of the spring 8A. Then, as the user selects a corresponding operation button of the control unit mounted at the predetermined position of the upper cover 6, the washing machine performs the washing stroke according to the pre-programmed order of washing, rinsing, draining and dehydrating stroke.

The washing water is drained from the washing tank 2 at the initial stage of the dehydration stroke due to the rotation of the dehydration tank 4 and the rotary blade 5 mounted inside the dehydration tank 4 due to the driving of the driving unit 3 during the washing stroke. Accordingly, the weight of the laundry in the dehydration tank 4 is gradually reduced.

Therefore, as the spring 8A of the damper 8 mounted on the washing tank 2 is restored in the compressed state, the vibration generated in the washing tank 2 when dehydration by the suspension bar 7 is absorbed and reduced.

And, as shown in Figure 3a, during the washing stroke, the anti-vibration weight (13, 13A) accommodated in each of the upper and lower balancers (11, 12) integrally formed on the upper side inside the dehydration tank (4), the upper and lower balancers (11, 12) It is seated in the seating grooves (14, 14A) formed on the inner bottom, respectively, and because of this vibration damping weight (13, 13A) is arranged at equal intervals in the circumferential direction inside the upper and lower balancers (11, 12), The balance of the washing tank 2 is corrected before.

When the washing stroke is completed and the dehydration stroke is started, as shown in Figure 3b, the vibration damping weight 13, which is accommodated in the upper and lower balancers (11, 12) by the rotation of the dehydration tank (4) due to the driving of the drive unit (3) 13A) is separated from the seating grooves 14 and 14A by the centrifugal force of the dehydration tank 4, and then moved along the inclined surfaces 15 and 16 formed at the bottom edges of the upper and lower balancers 11 and 12, respectively. The balancer (11, 12) is moved to a position inside the upper corner. At this time, the anti-vibration weight (13, 13A) is moved by the amount of the eccentricity in the opposite direction in which the laundry is eccentric in the dehydration tank (4) to prevent the vibration of the washing tank 2 due to dehydration.

On the other hand, the washing tank by the oil accommodated in the upper and lower balancers (11, 12) to sink the size of the anti-vibration weight (13, 13A) by about 50-75% to control the position movement of the anti-vibration weight (13, 13A) ( The vibration of 2) can be adjusted accurately and quickly.

The upper and lower balancers 11 and 12 are accommodated to form different sizes of the vibration preventing weights 13 and 13A, and the position shifting amounts of the vibration preventing weights 13 and 13A respectively accommodated in the upper and lower balancers 11 and 12 are determined. Since it is to use a different viscosity of the oil to control, it is possible to adjust even the fine vibration during the dehydration operation generated in the washing tank 2 due to the eccentricity of the laundry.

On the other hand, when the dehydration stroke is completed, the anti-vibration weight (13, 13A) is seated in the seating grooves (14, 14A) formed on the inner bottom of the upper and lower balancers (11, 12), wherein the anti-vibration weight (13, 13A) of When at least one is located between the neighboring seating grooves 14 and 14A, each of the vibration preventing weights 13 and 13A is to be seated in the seating grooves 14 and 14A, respectively.

Therefore, as shown in FIG. 4, the vibration generated in the washing tank 2 during the dehydration stroke is prevented by the vibration preventing weights 13 and 13A accommodated in the upper and lower balancers 11 and 12 formed above the dehydrating tank 4. The curve (a) showing the prevention is a curve (b) showing that the vibration generated in the washing tank 2 by the liquid balancer using the conventional brine is caused by the eccentricity of the laundry at the beginning of the dehydration stroke. It can be seen that the occurrence of vibration of the washing tub 2 is significantly reduced.

As described above, according to a preferred embodiment, the vibration generated in the washing tank is reduced due to the eccentricity of the laundry and the increase of the laundry in the initial stage of the dehydration operation of the automatic washing machine, thereby reducing the washing time because the washing administration is performed stably. This has the advantage of preventing shock from being applied to the structure and the driving unit of the washing machine by preventing vibration and shock generated in the washing tank during the dehydration stroke, thereby improving their durability.

Claims (6)

Washing machine having a washing machine body (1) equipped with a control unit for selectively operating the washing stroke, and a damper (8) mounted inside the washing machine body (1) to store the washing water and to reduce the vibration generated during the dehydration stroke ( 2) and a rotary vane 5 rotatably mounted on the bottom of the washing tank 2 in a forward and reverse direction, and a dehydration tank 4 having an anti-vibration balancer of the washing tank 2 formed in an annular shape on the upper side. An anti-vibration device of a washing machine, comprising: annular upper and lower balancers (11, 12) formed integrally on an upper side of the dehydration tank (4); And anti-vibration weights (13, 13A) accommodated in the upper and lower balancers (11, 12), respectively, to reduce the vibration of the washing tank (2) by being located in the opposite direction in which laundry is eccentric during dehydration administration. Vibration preventing device of automatic washing machine. According to claim 1, wherein the upper and lower balancers (11, 12) are formed in the number corresponding to the anti-vibration weight (13, 13A) on the bottom surface of each, and is settled during the washing stroke to correct the balance of the washing tank (2) Vibration preventing device of the automatic washing machine characterized in that it further comprises a seating groove (14, 14A). The method of claim 1, wherein the upper and lower balancers (11, 12) is formed to receive a predetermined amount of oil to reduce the vibration of the washing tank 2 by controlling the flow of the vibration damping weight (13, 13A) Anti-vibration device of the automatic washing machine characterized in that. The vibration damper 13 accommodated in the upper balancer 11 is larger than that of the vibration damper 13A accommodated in the lower balancer 12. Anti-vibration device of an automatic washing machine. According to claim 1, wherein the upper and lower balancers (11, 12), the upper and lower balancers (11, 12) are formed in the corners inside and outside respectively to smoothly flow the vibration preventing weight (13, 13A) during the dehydration stroke Vibration preventing device of the automatic washing machine characterized in that it further comprises an inclined surface (15, 16). The vibration preventing device of the automatic washing machine according to claim 3, wherein the viscosity of the oil contained in the upper balancer is higher than the viscosity of the oil contained in the lower balancer.