KR101208494B1 - drum type washing machine - Google Patents

Abstract

The present invention relates to a drum washing machine, and more particularly, to a drum washing machine having a lift that can easily replace the laundry ball.

To this end, the drum washing machine according to the present invention includes a drum rotatably installed in the tub; And it is preferable that the inner surface of the drum is provided to protrude inward, and comprises at least one or more lifts made to be demountable to replace the laundry ball.

Drum Washing Machine, Lift, Laundry Balls

Description

Drum washing machine

1 is a schematic view showing a general drum washing machine.

Figure 2 is a perspective view showing the internal structure of the drum of Figure 1;

Figure 3 is a perspective view showing the structure of the lift installed on the inner surface of the drum of Figure 2;

Figure 4 is an exploded perspective view showing the structure of the lift according to the present invention.

5 is a cross-sectional view showing a fixing structure of the lift according to the present invention.

Figure 6 is a plan view showing the back of the base portion according to the present invention.

Figure 7a is a rear perspective view showing the assembly structure of the cover portion and the supporter according to the present invention.

Figure 7b is an enlarged view showing a fixing portion provided on the back of the cover portion according to the present invention.

Figure 7c is a plan view showing a coupling structure of the fixing portion and the hook portion according to the present invention.

Figure 8 is a bottom view showing the assembly structure of the base portion and the cover portion according to the present invention.

Explanation of symbols on the main parts of the drawings

6: drum 100: lift

101: base 103: washing ball

107: guide groove 109: first coupling piece

120: cover portion 121: separation prevention hole

123: fixing part 124: fixing hole

125: second coupling piece 130: supporter

130a: support groove 135: hook portion

The present invention relates to a drum washing machine, and more particularly to a drum washing machine equipped with a lift of an improved structure.

In general, the drum washing machine is a device for washing laundry by rotating the drum by the driving force of the motor in a state in which detergent, washing water and laundry are put in the drum. Such a drum washing machine has the advantage that the damage of the laundry is less and the laundry is not tangled well, knocking and rubbing the laundry effect.

Hereinafter, the drum washing machine according to the related art will be described in detail with reference to FIGS. 1 to 3.

1 is a schematic view illustrating a conventional drum washing machine, FIG. 2 is a perspective view illustrating an internal structure of the drum of FIG. 1, and FIG. 3 is a perspective view illustrating a structure of a lift installed on an inner surface of the drum of FIG. 2.

As shown in FIG. 1, the drum washing machine is provided with a main body 1 having a laundry inlet formed on a front surface thereof, a door 2 installed to be opened and closed at a laundry inlet of the main body, and installed to store laundry water inside the main body. A tub 3 to be installed, a motor device 4 installed on the tub to generate a driving force, a washing shaft 5 connected to the motor device, and a driving force connected to the washing shaft. It comprises a drum (6) for washing the laundry by.

The tub 3 is supported by a damper (not shown) and a spring (not shown), and the damper and the spring function to cushion the vibration generated when the motor device 4 and the drum 6 rotate.

The motor device may be applied to an indirect driving method for rotating the drum by transmitting the driving force generated from the motor to the washing shaft by a belt, or a direct driving method for rotating the drum by directly transmitting the driving force generated from the motor to the washing shaft. You can also apply.

In addition, the drum (6) is made of stainless material, a spider (8) is installed on the closed rear surface of the drum to reinforce the rear side strength of the drum, and the washing shaft (5) at the center of rotation of the spider Is condensed. These spiders are made of castings to prevent the drum from tearing or deforming when the laundry shaft is rotated. At this time, in order to further reinforce the strength of the drum, the rear side surface of the drum is formed to protrude inward the portion on which the spider 8 is to be installed.

2, at least one lift 7 is installed on an inner surface of the drum 6 so as to be substantially parallel to the washing shaft 5. At this time, the lift is built so that a portion of the washing ball 7a is exposed to the drum 6 so as to rotate as it comes into contact with the laundry. At this time, the washing ball (7a) is made of a ceramic material to facilitate the rotation in the lift (7).

The lower surface portion of this lift 7 is fixed by a fastening member 7b inserted in the outer surface of the drum as shown in FIGS. 1 and 2. Further, the rear end of the lift is fixed to the portion where the spider is installed in the rear side of the drum.

The drum washing machine configured as described above performs the washing operation as the washing stroke, the rinsing stroke, and the dehydration stroke are continuously performed. In addition, the washing stroke, the rinsing stroke or the dehydration stroke may be selectively performed according to the user's selection. In addition, it is understood that the laundry can be washed by various washing methods according to the type of laundry.

When the drum washing machine performs the washing operation, the drum 6 is rotated at a low speed about the washing shaft 5 by the driving force transmitted from the motor device.

At this time, the laundry is lifted while the lift 7 reaches a predetermined height from the lower part, and when the lift 7 is over the predetermined height, the laundry falls again. As such, the lift 7 repeats a series of processes for raising the laundry to the top and then dropping the laundry when the drum 6 rotates for a predetermined time. The laundry is washed by this series of processes.

In addition, when the drum washing machine performs a dehydration stroke, the drum 6 is rotated at a high speed about the washing shaft (5). At this time, the laundry contained in the drum is dewatered by centrifugal force.

However, the conventional drum washing machine has the following problems.

That is, the lift is fixed by inserting the fastening member in the outer surface of the drum as shown in Figure 1, if the ceramic washing ball is broken, the drum is completely removed from the tub and motor device after replacing the washing ball There is a problem that must be done.

Therefore, since the washing ball must be replaced after the drum washing machine is brought into a factory or a service center, a transportation cost, a repair cost, and a repair time for repairing the washing machine are increased. As such, the difficulty of replacing a minute component may lower the reliability of the consumer's product.

In order to solve the above problems, an object of the present invention is to provide a drum washing machine having a lift that is easy to replace the laundry ball.

In order to achieve the above object, the drum washing machine according to the present invention comprises a drum rotatably installed in the tub; And it is preferable that the inner surface of the drum is provided to protrude inward, and comprises at least one or more lifts made to be demountable to replace the laundry ball.

Here, the lift may include a base portion fixed to the inner surface of the drum, and a cover portion detachably installed on the edge of the base portion, and the separation prevention hole is formed so that the washing ball is partially exposed into the drum.

In addition, the lift is preferably detachably installed on the lower side of the cover portion, preferably further comprises a supporter formed with a support groove for rotatably supporting the lower portion of the laundry ball. The cover portion preferably has a convex shape to cover the upper portion of the base portion.

A guide piece may be provided at one side of the edge of the base part and the lower edge of the cover part, and a guide groove into which the guide piece is slid and inserted may be formed on the opposite side of the base part. The base portion and the cover portion may be fixed by fastening the fixing bolt.

One side of the lower surface of the base portion and the inner circumferential surface of the drum may be provided with a hook, and the other side may be formed with a groove into which the hook is inserted. The base part may be fastened by a fixing bolt to be fixed to an inner circumferential surface of the drum.

The rear end of the base portion protrudes upwards, and the rear end may be fastened by a rear side of the drum and a fixing bolt. It is preferable that a rib for strength reinforcement is formed at the rear end of the base portion.

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

Figure 4 is an exploded perspective view showing in detail the structure of the lift according to the present invention.

As shown in FIG. 4, the drum washing machine according to the present invention preferably includes a drum (see FIG. 2) and at least one lift 100. Here, the lift 100 is preferably made of a cover portion 120, the base portion 101, and the supporter 130.

In addition, the drum 6 is rotatably installed in the tub, and the lift 100 is preferably provided to protrude at a predetermined angle along the circumferential direction of the drum 6 on the inner circumferential surface of the drum. .

Therefore, the lift 100 performs a function of pulling up the laundry upon the rotation of the drum and then dropping the laundry again. The upper surface of the lift 100 rotates gently upon contact with the laundry, thereby damaging the laundry. At least one washing ball 103 to prevent the portion is installed to protrude. At this time, the washing ball 103 is preferably made of ceramic so as to be rotatable upon friction with the laundry.

On the other hand, it is preferable that the lift 100 is provided so as to be disassembled so that the washing ball 103 can be easily replaced when the washing ball 103 is broken. For this purpose, the cover part 120 is the base part. It is detachably attached to 101. As shown in FIG. Here, the cover portion 120 and the base portion 101 is preferably formed long along the longitudinal direction of the drum.

In detail, the base portion 101 is fixed to the inner circumferential surface of the drum, and the cover portion 120 is detachably installed at the lower edge of the base portion 101.

In addition, the cover part 120 is provided with a departure prevention hole 121 so that a portion of the washing ball 103 is exposed to the drum. The edge of the separation prevention hole is preferably formed to be rounded so as to smoothly contact the washing ball 103. Therefore, the laundry ball 103 protruding into the drum through the release preventing hole 121 may be prevented from being damaged when the drum is rotated at high speed as the laundry ball 103 is rotated when the drum contacts the laundry.

On the other hand, if the base portion is convexly protruded upward and the cover portion is narrowly formed along only the portion where the laundry ball is formed and assembled with the upper end of the base portion, there is a problem that the laundry is caught through the gap easily and there is a gap in the assembled portion. May be generated.

Therefore, the present invention can prevent the above problems from occurring by being convex upwardly so that the cover part 120 covers the upper part of the base part 101 as a whole.

In addition, as shown in Figure 4, the lift preferably further comprises a supporter 130 for rotatably supporting the lower portion of the washing ball 103. Here, the supporter 130 is provided between the cover portion 120 and the base portion 101, it is preferable to be detachably installed on the lower side of the cover portion 120.

The supporter 130 has a support groove 130a formed to rotatably support the lower portion of the laundry ball 103. Here, the support groove 130a is formed in a hemispherical shape having a diameter substantially the same as the laundry ball 103. Therefore, the laundry ball 103 is rotatably supported between the cover part 120 and the supporter 130.

Of course, as shown, the supporter 130 may be provided independently and assembled, but may be configured to be integrally formed on the upper surface of the base portion 101.

Here, the structure of the base portion 101 is fixed to the inner peripheral surface of the drum as follows.

5 is a cross-sectional view showing a fixing structure of the base portion and the drum according to the present invention, Figure 6 is a plan view showing the rear of the base portion.

4 to 6, hooks 106 are provided on both lower sides of the base portion 101, and the hooks 106 are elastically inserted and fixed at corresponding positions on the drum 6. Grooves are formed.

Through this, the temporary assembly between the base portion 101 and the drum is made, as well as the position for fastening the fixing member 105 such as a fixing bolt is automatically aligned. Of course, the hook 106 is provided on the drum, and the groove to which the hook 106 is coupled may be configured to be formed on the bottom surface of the base portion 101.

On the other hand, as shown, the rear portion 101a of the base portion 101 protrudes upward, and the rear portion 101a is fastened to the fastening member 104 such as the rear side of the drum and the fixing bolt. Is fixed. To this end, a fastening hole 104a is formed in the rear portion 101a, and the fixing member 104 penetrates from the rear of the drum to be fastened to the fastening hole 104a. At this time, the fixing member 104 is preferably fastened to a portion of the rear side of the drum is installed spider (8: see Fig. 1 and 2) connecting the drum and the bearing housing.

In addition, the front side of the base portion 101 is preferably provided with a fastening boss 105a for fastening the fixing member 105 such as a bolt from inside or outside the drum. Thus, by fastening the fixing member 105 to the fastening boss 105a, the front and rear of the base portion 101 can be stably fixed to the inner circumferential surface of the drum 6.

On the other hand, as shown in Figure 6, for the reinforcement of the rear support structure of the lift to which the fixing member 104 is fastened, the strength reinforcing ribs 112a at the back of the base portion 101 during injection molding Preferably formed. Therefore, even if concentrated stress is generated in the fastening hole 104a structurally, the fastening hole 104a is prevented from being damaged.

On the other hand, Figure 7a is a perspective view showing a structure in which the supporter according to the present invention is detachably installed on the lower side of the cover portion, Figure 7b is an enlarged view of the fixing portion provided on the lower surface of the cover portion, Figure 7c is It is a top view which shows the coupling structure of the fixing part and the hook part.

As shown in Figure 7a, both ends of the supporter 130 is provided with a hook portion 135, the lower surface of the cover portion 120 is provided with a fixing portion 123 to which the hook portion is inserted and fixed.

As shown in FIG. 7B, the fixing part 123 includes a first extending part 123a and a second extending part 123b facing each other, and a fixing hole between the extension parts 123a and 123b. The hook portion 135 is inserted into 124. In addition, a hooking portion 123c for fixing the inserted hook portion 135 protrudes on any one side of the extension portions 123a and 123b. Accordingly, when the hook part 135 is pushed between the extension parts 123a and 123b, the hook part 123c is retracted elastically and the hook part 135 is inserted between the extension parts 123a and 123b. Is fixed.

Of course, the hook portion 135 may be provided on one side of the base portion 101, and the fixing portion 123 may be formed on the bottom surface of the cover portion 120.

As shown in FIG. 7C, the hook part 135 includes a support part 135a, a connection part 135b, and an insertion guide part 135c. Here, the support part 135a extends from the supporter 130, and the connection part 135b extends in a direction perpendicular to the support part 135a. Therefore, the connection part 135b is inserted between the pair of extension parts 123a and 123b and then positioned and fixed in the fixing hole 124.

In addition, the insertion guide part 135c extends vertically from the connection part 135b to be guided along the inner wall surfaces of the extension parts 123a and 123b. Here, the insertion guide portion 135c is preferably extended in a predetermined length in both directions perpendicular to the end of the connecting portion 135b, but may extend only in one direction.

Meanwhile, the hook part 135 may be detached from the fixing part 123 only by pulling the fixed supporter 130 with a predetermined external force, so that the hook part 135 may be separated. Through this, the supporter 130 can be easily removed from the cover unit 120.

In addition, as shown in Figures 4 and 5, the fastening boss 102a is formed in the base portion 101 for a more stable fixing structure and the cover portion 120 and from the upper side of the cover portion 120 Fixing member 102 such as a bolt fastened to the fastening boss 102a may be additionally fastened to fix the supporter 130.

Through this, both ends of the supporter 130 is fixed to the lower surface of the cover portion 120. Thereafter, when the cover part 120 is assembled to the upper side of the base part 101, the lower surface of the supporter 130 is stably supported on the upper surface of the base part 101. To this end, the lower surface of the supporter 130 and the profile of at least a portion of the upper surface of the base portion 101 is preferably provided to achieve the same shape. Of course, as illustrated, the upper surface of the base portion 101 may be formed to protrude or recess the profile portion 108a having the same profile as the lower surface of the supporter 130.

On the other hand, Figure 8 is a plan view showing a lower coupling structure of the base portion and the cover portion according to the invention.

As shown in FIG. 8, the guide piece 110 is provided at the lower edge of the cover part 120, and the guide groove 110 is inserted and fixed to the edge of the base part 101. ) Is formed. That is, when the cover part 120 slides in a predetermined position on the upper surface of the base part 101, the guide piece 110 is inserted into the guide groove 107 to prevent the base part 101 from being separated. .

Of course, the guide piece may be provided at the edge of the base portion 101, and the guide groove 107 may be formed at the lower edge of the cover part 120.

In addition, it is preferable that the first and second coupling pieces 109 and 125 coupled to each other are formed in a '-' shape at the rear edges of the base part 101 and the cover part 120, respectively. . Through this, the lower edge of the cover portion 120 is coupled to the edge of the base portion 101.

In addition, the bottom of the base portion 101 is preferably formed to protrude a rib 108 for strength reinforcement.

Referring to the assembly process of the lift according to the present invention described above are as follows.

First, the base portion 101 is fixed to the inner circumferential surface of the drum, and the hook 106 formed on the base portion 101 is temporarily assembled into a groove formed in the drum. At this time, since the fastening positions of the fixing members 104 and 105 are automatically aligned, the base portion 101 is stably fixed to the inner circumferential surface of the drum by fastening the fixing members 104 and 105 to the aligned positions.

Of course, the operation of fixing the base portion 101 to the drum is preferably made before mounting the drum inside the tub.

Thereafter, the support ball 130 is assembled to the lower surface of the cover part 120 in the state in which the washing ball 103 is inserted into the support groove 130a of the supporter 130. To this end, the hook portion 135 provided at both ends of the supporter 130 is inserted into the fixing portion 123 provided on the bottom surface of the cover portion 120. Therefore, the supporter 130 is detachably assembled to the lower surface of the cover part 120.

The cover part 120 to which the supporter 130 is assembled as described above is slidably mounted to the base part 101 to be detachably mounted. In detail, the guide piece 110 provided on the lower edge of the cover portion 120 is temporarily assembled by being inserted into the guide groove 107 formed on the edge of the base portion 101 by sliding. Thereafter, the fixing member 102 is fastened from the upper side of the cover part 120 to complete the fixing between the cover part 120 and the base part 101.

On the other hand, when the laundry ball is broken during operation of the drum washing machine, the broken laundry ball can be easily replaced by disassembling the cover part and the supporter.

The structure of the lift according to the invention can be applied not only to the washing machine but also to the dryer. In addition, the present invention has been described in detail with reference to the embodiments, but those skilled in the art will be able to add various modifications and changes to the embodiments without departing from the scope of the technical spirit of the present invention, the scope of the present invention is the embodiment It is not limited to these, but only by the description of the claims.

As described above, the drum washing machine according to the present invention has the following effects.

First, since the lift is detachably installed in the drum, it is possible to replace the laundry ball of the lift without disassembling the drum, the tub, and the motor device. Therefore, by facilitating the replacement of the laundry ball, it is possible to significantly reduce the repair time and repair cost of the washing machine.

Second, since the cover part is integrally provided to cover the upper part of the base part as a whole, laundry can be prevented from being caught in the assembly part of the lift.

Claims (10)

A main body in which laundry inlets are formed; A tub installed to store the washing water inside the main body; A drum rotatably installed in the tub; And It is provided to protrude inward to the inner surface of the drum, and includes at least one or more lifts are demountable to replace the laundry ball, The lift includes a base portion fixed to the inner surface of the drum, a cover portion detachably installed on the bottom edge of the base portion and formed with a separation prevention hole so that the washing ball is partially exposed to the drum. A guide piece is provided at one side of the edge of the base part and the lower edge of the cover part, and a guide groove into which the guide piece is slidably inserted is formed at the other side of the base part. And the base part and the cover part are fastened by fixing bolts. delete The method of claim 1, The drum washing machine, characterized in that it further comprises a supporter is detachably installed at the lower side of the cover portion, the supporter is formed to support the lower portion of the laundry ball rotatably. The method of claim 1, The cover unit has a drum washing machine, characterized in that it has a convex upward shape to cover the upper portion of the base portion. delete delete The method of claim 1, One side of the lower surface of the base portion and the inner peripheral surface of the drum is provided with a hook, the other side of the drum washing machine, characterized in that the groove is inserted into the hook is formed. The method of claim 1, The base unit is a drum washing machine, characterized in that fastened by the fixing bolt fixed to the inner peripheral surface of the drum. The method of claim 1, The rear end of the base portion protrudes upwards, and the rear end of the drum washing machine, characterized in that fastened by the fixing bolt. The method of claim 9, Drum washing machine, characterized in that the rear end of the base portion is formed rib for strength.

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