KR20030091509A - Balance-weight for drum washer - Google Patents

Abstract

PURPOSE: A balance weight for a drum type washing machine is provided to cut down installation cost by manufacturing the balance weight with curing cement in a housing without additional installation, and to prevent damage of the drum washing machine from separation of the balance weight by restricting displacement of cement with arranging a separation preventing rib in the housing. CONSTITUTION: A balance weight(70) of a drum type washing machine is composed of a housing(72) integrally protruded in the front of a tub cover(55) and opened in the front; cement(74) injected to the housing through the front part and cured to keep balance of a tub(54); and a separation preventing rib(76) arranged in the housing to prevent solid cement from being displaced from the housing against vibration during washing. The balance weight corrects eccentricity of the tub according to electric components installed in the tub by regulating the amount of cement.

Description

Balance weight for drum washing machine {Balance-weight for drum washer}

The present invention relates to a balance weight for a drum washing machine to hold the center of gravity of the tub, and more particularly to a balance weight for a drum washing machine integrally formed in the tub.

In general, the drum washing machine washes by using the friction between the drum and the laundry rotated by the driving force of the motor while detergent, washing water, and laundry are put in a drum installed horizontally, and there is almost no damage to the laundry and the laundry does not get tangled with each other. Knocking and rubbing has a washing effect.

Recently, a laundry / dry combined drum washing machine is widely used to dry a laundry.

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

The drum washing machine according to the prior art is provided with a tub (4) for washing the laundry inside the cabinet (2) and a drum (6) for rotating the laundry inside the tub (4) and washing the laundry placed therein. In front of the cabinet 2, a cabinet cover 3 is provided with an input hole h through which laundry is introduced into and out of the drum 6, and the cabinet cover 3 is separated from laundry by the drum 6. The door (not shown) is installed to be opened and closed by the door hinge assembly (not shown) in order to prevent that.

The cabinet 2 is equipped with a water supply hose 8 for guiding the wash water to the tub 4 and a water supply valve 10 for opening and closing the water supply hose 8 on the upper side, and a tub 4 on the lower side. Equipped with a drain pump 12 and a drain hose 14 for discharging the washing water filled in the outside to the outside, and the controller (not shown) to control the operation of the detergent container 26 and the drum washing machine to store the detergent in the front upper side Is fitted.

The tub 6 is connected to the drum 4 and the rotating shaft 15 at the rear thereof, and a motor 16 for rotating the drum 4 is mounted, and the upper and lower sides of the tub 6 are respectively generated during the dehydration stroke of the drum washing machine. A spring 17 and a damper 18 for damping vibration are mounted, and a heater 20 for controlling the temperature of the wash water filled in the tub 4 is mounted.

In this case, since the weight of the motor 12 is usually about 3.5 kg, the weight of the tub 4 is eccentrically toward the rear side, so that the rotation of the drum 6 is not smoothly performed when the drum washing machine is operated. Therefore, two balance weights 22 having a predetermined weight are mounted up and down in front of the tub 4 to eliminate the weight imbalance of the tub 4.

Meanwhile, in the case of a washing / drying drum washing machine, a drying duct 24 and a condensation duct (not shown) are installed at the front of the tub 4 to dry the washed laundry. The weight is determined in consideration of not only the motor 16 but also the drying duct 22, the condensation duct, and the like.

As shown in FIG. 2, the balance weight 22 is hardened or cast by pouring cement into a plastic injection molding 22a forming a mold or an appearance, and a plurality of bolts (in front of the tub 6) are formed. It is mounted using B).

However, the balance weight for a drum washing machine according to the prior art is cured for a long time by pouring cement into the plastic injection molding (22a), as shown in Figure 2, so it is mounted with a plurality of bolts (B) in front of the tub (4) There is a problem that takes a lot of mounting time.

In addition, when the bolt (B) is cracked in the bolt hole (not shown) formed in the tub 4 at the time of fastening the bolt B, the tub 4 is broken or the strength of the bolt B is weak. Due to the vibration generated, the mounting of the balance weight 22 is released and the rotation of the drum 6 is not smoothly performed, which causes a problem that the washing machine breaks down.

The present invention has been made to solve the above problems of the prior art, it is unnecessary to provide a process for mounting the balance weight on the tub, and provides a balance weight for a drum washing machine in which the balance weight does not fall off the tub during operation of the drum washing machine. There is a purpose.

1 is a side cross-sectional view of a drum washing machine according to the prior art,

Figure 2 is a perspective view of the balance weight is mounted on the tub according to the prior art,

3 is a side cross-sectional view of a drum washing machine according to the present invention;

Figure 4 is a perspective view of the balance weight is mounted on the tub cover according to the present invention.

<Explanation of symbols on main parts of the drawings>

52: cabinet 53: tub body

54: Tub 55: Tub Cover

56 drum 70 balance weight

72 housing 74 cement

76: departure prevention rib 75: protrusion

77: catching part

The balance weight for a drum washing machine according to the present invention for solving the above problems is projected from the front of the tub to wash the laundry and the front part is opened, and injected into the inside through the front part of the housing, the curing weight of the tub It is composed of a cement to hold the center, and the separation prevention ribs disposed inside the housing to prevent the cement from being separated from the housing.

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

Figure 3 is a side cross-sectional view of the drum washing machine according to the present invention, Figure 4 is a perspective view of the balance weight is mounted on the tub cover according to the present invention.

The drum washing machine according to the present invention includes a tub 54 and a drum 56 for washing laundry in a cabinet 52 having a front opening, and a door (not shown) in the opening 52a of the cabinet 52. C) is mounted to be opened and closed, and a motor 58 connected to the drum 56 and the rotating shaft 57 to rotate the drum 56 is mounted to the rear of the tub 54.

The cabinet 52 is equipped with a controller (not shown) for controlling the operation of the detergent container 60 and the drum washing machine in which the detergent is stored on the upper side, and the tub 54 between the cabinet 52 and the upper side of the tub 54. Suspension spring (62) supporting the and the water supply hose 64 for supplying the wash water to the tub (54) is mounted, and occurs during the dehydration stroke of the drum washing machine between the cabinet 52 and the lower side of the tub (54) A drain pump 68 and a drain hose 69 are discharged to discharge the wash water supplied to the damper 66 and the tub 54 to the outside, and the tub 54 and the drum 56 of the Between the lower side is equipped with a heater 65 for adjusting the temperature of the wash water supplied to the tub (54).

The tub 54 is composed of a tub body 53, in which a motor 58 having a weight of 3.5 kg and a front thereof is opened, and a tub cover 55 disposed in front of the tub body 53, The tub body 53 and the tub cover 55 are each injection-molded with a plastic material and then fastened to each other by a fastening member (not shown).

In addition, the tub 54 is eccentrically weighted by electrical equipment such as a motor 58, and has a predetermined weight on the front outer circumference of the tub cover 55 to hold the center of gravity of the tub 54. The balance weight 70 is arrange | positioned.

The balance weight 70 protrudes integrally from the front of the tub cover 55 and has a housing 72 through which the front portion 72a is opened, and the housing 72 through the front portion 72a of the housing 72. Cement (74) injected into the interior, and then cured to hold the center of gravity of the tub (54), and solid cement (74) disposed and cured in the housing (72) during operation of the drum washing machine. It is composed of a separation preventing rib 76 for preventing the separation from the housing 72 by vibration or the like.

The housing 72 is to determine the overall shape of the balance weight 70, is integrally formed during the injection molding of the tub cover 55, the injection molding of the tub cover 55 and the housing 72 is easy The front part 70a is opened to inject the cement 74.

Meanwhile, in the case of a washing / drying drum washing machine, a drying duct 51 and a condensation duct (not shown) for drying the laundry on which the washing and dehydration stroke is completed are mounted on the front upper side of the tub cover 55, and the cement 74 ) Has a predetermined weight according to the electrical appliances mounted on the tub 54 and the shape is determined by the housing 72.

The separation preventing rib 76 has a cross-sectional shape such that the cement 74 of the solid body cured in the housing 72 does not slip out of the housing 72 due to vibration generated during the operation of the drum washing machine. It is formed to be TT '.

In other words, the separation preventing rib 76 is a protrusion 75 of a shape protruding in the height direction of the housing 72 of the balance weight 70 integrally from the front surface of the tub cover 55, and the protrusion 75 Is arranged orthogonal to the projecting direction of the solid body consisting of a locking portion 77 to prevent the separation through the front portion 72a of the housing 72, a plurality of inside the housing 72 It is disposed, and integrally molded in the injection molding of the tub cover 55.

The manufacturing method of the balance weight 70 of the present invention, first, in the shape of the tub cover 55 protrudes in front of the tub cover 55 during injection molding, the housing 72 and the plurality of separation preventing ribs 76. After the integrally formed, by pouring a predetermined amount of cement 74 dough in the housing 72 injection-molded integrally with the tub cover 55, curing balance 70 is produced.

Here, the balance weight 70 corrects the weight eccentricity of the tub 54 according to the electrical equipment mounted on the tub 54 by adjusting the amount of the cement 74, and integrally formed with the tub cover 55 during manufacturing Therefore, the mounting process of the balance weight 70 is not necessary, and the fall from the tub cover 55 does not occur due to vibration generated during washing of the drum washing machine.

The balance weight for a drum washing machine according to the present invention configured as described above is manufactured by pouring cement into a housing integrally formed in front of the tub cover, thereby eliminating a separate mounting process, thereby reducing the mounting cost, and the inside of the housing. Since the restraint rib is disposed to restrain the cement of the solid body from being separated from the housing, there is an advantage of preventing the drum washing machine from being damaged while the balance weight falls from the tub cover during washing.

Claims (3)

A housing which protrudes from the front of the tub where the laundry is washed and whose front part is opened; Cement injected and cured therein to hold the center of gravity of the tub; Balanced weight for a drum washing machine, characterized in that configured to escape from the ribs disposed inside the housing to prevent the cured cement is separated from the housing. The method of claim 1, The separation preventing rib has a cross-sectional shape 'TT' balance weight for a drum washing machine. The method of claim 1, The separation preventing rib is a balance weight for a drum washing machine, characterized in that a plurality of protruding integrally from the front of the tub.