KR20130064620A - Suspension and mini drum type washing machine therewith - Google Patents

Abstract

PURPOSE: A buffer and a mini drum washing machine including the same are provided to increase elasticity and to rotate the buffer by being installed at both sides of the mini drum washing machine. CONSTITUTION: A product includes a cabinet(110), a tub(11) containing washing water, and a buffer(150) installed between the tub and the cabinet. The tub generates vibration at a vertical direction and a side direction by rotating a drum(60). The buffer eliminates vibration at the vertical direction and the side direction.

Description

Shock Absorber and Mini Drum Washing Machine Having the Same {SUSPENSION AND MINI DRUM TYPE WASHING MACHINE THEREWITH}

The present invention relates to a shock absorber and a mini drum washing machine having the same, and more particularly, to a shock absorber capable of preventing the shock absorber from flowing laterally and a mini drum washing machine including the same.

A general drum washing machine includes a cabinet, a tub installed inside the cabinet and fresh water for washing, a drum rotatably installed on the tub and storing laundry, a water supply device for supplying the washing water into the tub, and washing And a drainage device for discharging water to the outside of the cabinet, a driving device for rotating the drum to perform the washing operation, and a shock absorber for supporting the tub so as to flow to prevent the vibration generated during the washing operation from being transmitted to the cabinet.

When the user starts the washing operation after storing the washing water in the drum, the washing water is supplied to the tub and the drum by the operation of the water supply device, and the washing operation is performed while the drum is rotated by the driving device.

At this time, as the drum is rotated by the driving device, vibration is generated in the drum and the tub, and the vibration transmitted from the tub by the operation of the shock absorber is suppressed from being transmitted to the cabinet.

In addition, since the weight balancer is installed in the tub, the tub is prevented from flowing by the vibration generated by the rotation of the drum.

Background art of the present invention is disclosed in Republic of Korea Patent Publication No. 10-2000-0033917 (June 15, 2000, the name of the invention: drum washing machine).

In general, the drum washing machine has a larger tub capacity than the set value, and a damper is installed between the bottom of the cabinet and the bottom of the tub to offset the vibration generated during the washing operation, and between the top of the cabinet and the top of the tub. Only when the elastic member is installed in the vibration can be canceled there is a problem that can not simplify the shock absorber.

In addition, the general drum washing machine has a problem that it is difficult to cancel the horizontal vibration generated in the tub during the washing operation because the conventional coil spring is installed close to the vertical direction as the elastic member used in the shock absorber.

In addition, the damper is installed between the bottom of the tub and the cabinet bottom of the general drum washing machine is inclined so that the cylinder or rod is easily deformed or damaged as the cylinder and the rod are separated by the rolling phenomenon generated in the tub during the washing operation. There is a problem.

In addition, since the end of the tub facing the door is opened in the general drum washing machine, and the opening of the tub is formed smaller than the diameter of the tub, it is difficult to manufacture the tub in one step, so the front and rear parts of the tub are separately manufactured. Since the assembly is difficult to reduce the manufacturing process of the tub.

In addition, since the weight balancer is installed at the front of the tub and around the opening, the general drum washing machine has a length long enough to prevent the weight balancer and the front panel of the cabinet from interfering with each other, making it difficult to reduce the size and weight of the drum washing machine. have.

In addition, a general drum washing machine is provided with a pair of dampers at the lower side of the tub, and a pair of elastic members are installed at the upper side of the tub, so that a sufficient flow amount of the tub is secured. In order to reduce the size of the drum washing machine because the gap between the tub and the cabinet is wide.

Therefore, there is a need for improvement.

The present invention can prevent the shock absorber from being laterally spaced by the vibration generated during the washing operation, improve the mounting structure of the shock absorber and the weight balancer to suppress the flow of the tub and reduce the gap between the tub and the cabinet An object of the present invention is to provide a shock absorber and a mini drum washing machine having the same, which can reduce the size and weight of the drum washing machine and simplify the manufacturing process of the tub.

In order to achieve the above object, the present invention is a rotatably installed on both sides of the vibration object, the lower end of the cylinder opening; A rod fixed to the bottom surface and inserted into the opening of the cylinder so as to be retractable and installed upright in a tangential direction contacting the side end of the vibration object; And an elastic member interposed between the rod and the inner wall of the cylinder, the elastic member having a lower elastic force compared with the elastic force of the upper portion so as to prevent the cylinder from flowing in the lateral direction.

In addition, the rod is provided with a flow preventing portion, the flow preventing portion is interposed between the inner wall of the cylinder and the rod to prevent the cylinder from flowing in the lateral direction, it is characterized in that the sliding close contact with the inner wall of the cylinder. It is done.

In addition, the flow prevention portion, the jaw portion protruding from the circumferential surface of the rod to form a ring shape and the outer edge is bent upward; A closing plate disposed between the jaw portion and the cylinder and formed in a cap shape and covering the upper portion of the rod to surround the jaw portion, and the rod passing through the jaw portion; And a flow preventing member formed in a ring shape to surround the jaw and fitted to the jaw, and in close contact with an inner wall of the finishing plate.

In addition, the elastic member is characterized in that it comprises a coil spring interposed between the closing plate and the inner wall of the cylinder.

In addition, the coil spring is characterized in that the diameter increases toward the lower side to form a trapezoidal side shape.

In addition, the present invention, the cabinet forming the appearance of the drum washing machine and the front opening is opened and closed by the door; A tub installed inside the cabinet and rotatably installed with a drum in which laundry water is fresh and laundry is stored therein; A cylinder rotatably installed at both sides of the tub and having a lower end opened; A rod fixed to a bottom surface of the cabinet and inserted into the opening of the cylinder so as to be protruded and installed upright in a tangential direction contacting a side end of the vibration object; And an elastic member interposed between the rod and the inner wall of the cylinder, the elastic member having a lower elastic force compared with the elastic force of the upper portion so as to prevent the cylinder from flowing in the lateral direction. .

In addition, the present invention, the cabinet forming the appearance of the drum washing machine and the front opening is opened and closed by the door; A tub installed inside the cabinet and rotatably installed with a drum in which laundry water is fresh and laundry is stored therein; A cylinder rotatably installed at both sides of the tub and having a lower end opened; A rod fixed to a bottom surface of the cabinet and inserted into the opening of the cylinder so as to be protruded and installed upright in a tangential direction contacting a side end of the vibration object; An elastic member interposed between the rod and the inner wall of the cylinder, the elastic member having a lower elastic force greater than that of an upper portion to prevent the cylinder from flowing laterally; And coupled to the tub provides a mini drum washing machine comprising a weight portion for maintaining the balance of the tub.

The shock absorber and the mini drum washing machine having the same according to the present invention can prevent the shock absorber from being laterally separated by vibration generated during the washing operation, thereby preventing the shock absorber from being deformed or damaged. .

In addition, the shock absorber according to the present invention and the mini-drum washing machine having the same cancel the vertical vibration and the horizontal vibration generated during the washing operation by the damper installed at the lower side of the tub because a plurality of dampers support the lower part of the tub. There is an advantage that can be omitted so that the elastic member installed on the upper side of the tub.

In addition, the shock absorber according to the present invention and the mini-drum washing machine having the same are connected to the outer surface of the tub and the tub is supported by a plurality of columns because it is fixed to the cabinet bottom surface in a state of being upright in a substantially vertical direction. The effect is that the elastic member installed on the upper side of the tub can be omitted and there is an advantage that the number of parts is reduced.

In addition, since the tub of the mini drum washing machine according to the present invention is made of a cylindrical member whose diameter increases toward the door side, the tub manufacturing process can be simplified, and if the drainage device is installed in front of the tub, the wash water remaining in the tub is easy. There is an advantage that can be discharged.

In addition, since the tub of the mini drum washing machine according to the present invention is made of a cylindrical member whose diameter increases toward the door side, the tub manufacturing process can be simplified, and if the drainage device is installed in front of the tub, the wash water remaining in the tub is easy. There is an advantage that can be discharged.

In addition, since the buffer according to the present invention and the mini-drum washing machine having the same are installed on the circumferential surface of the tub, the weight balancer is installed so that the weight balancer and the gasket can be prevented from interfering with the vibration generated during the washing operation. Or there is an advantage that can prevent damage.

In addition, the shock absorber according to the present invention and the mini drum washing machine having the same can reduce the space required for the installation of the shock absorber can be miniaturized drum washing machine has the advantage that can be installed in various places, such as kitchen or living room have.

1 is an exploded perspective view showing a mini drum washing machine according to an embodiment of the present invention.
2 is a front view showing a mini drum washing machine according to an embodiment of the present invention.
3 is a cross-sectional view showing a shock absorber of the mini drum washing machine according to an embodiment of the present invention.
Figure 4 is a cross-sectional view showing the flow preventing portion of the mini drum washing machine according to an embodiment of the present invention.
Figure 5 is an exploded perspective view showing a shock absorber of the mini drum washing machine according to an embodiment of the present invention.
6 is a cross-sectional view showing a connection structure between the tub and the gasket of the mini drum washing machine according to an embodiment of the present invention.
7 is a cross-sectional view illustrating a state in which a protruding gasket is added to a gasket of a mini drum washing machine according to an embodiment of the present invention.
8 is a cross-sectional view showing a state in which a ring spring is added to the gasket of the mini drum washing machine according to an embodiment of the present invention.
9 is a cross-sectional view showing the weight of the mini drum washing machine according to an embodiment of the present invention.

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

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is an exploded perspective view showing a mini drum washing machine according to an embodiment of the present invention, Figure 2 is a front view showing a mini drum washing machine according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention It is a cross-sectional view showing a shock absorber of the mini drum washing machine according to.

In addition, Figure 4 is a cross-sectional view showing a flow preventing portion of the mini drum washing machine according to an embodiment of the present invention, Figure 5 is an exploded perspective view showing a shock absorber of the mini drum washing machine according to an embodiment of the present invention.

1 to 5, a drum washing machine according to an embodiment of the present invention includes a cabinet 110, a tub 11 installed inside the cabinet 110 and a wash water fresh water, a tub 11, and a tub 11. The cabinet 110 is provided between the bottom surface and includes a shock absorber 150 for canceling the vertical flow of the tub 11 and the lateral flow of the tub 11 at the same time.

Since the drum 60 is installed inside the tub 11, and a driving device for rotating the drum 60 is installed on the rear surface of the tub 11, the washing operation is performed while the drum 60 is rotated by the driving device. .

At this time, the vibration of the vertical direction and the lateral direction is generated in the tub 11 by the rotation of the drum 60, this embodiment is a shock absorber is installed between the tub 11 and the bottom surface of the cabinet 110. By 150, the vibration in the vertical direction and the vibration in the lateral direction are simultaneously canceled out.

Therefore, the drum washing machine according to the present embodiment does not require a separate elastic member installed between the tub 11 and the upper surface of the cabinet 110, so that the vibration reducing device including the shock absorber 150 is simplified. Will appear.

The tub 11 has a connection hole 132 to which the shock absorber 150 is connected, and the straight line 80 connecting the center of the tub 11 to the connection hole 132 is 45 degrees or less from the horizontal plane 70. Spaced apart.

Here, the horizontal plane 70 means a plane passing through the center of the tub 11 and disposed in parallel with the ground.

The straight line 80 is disposed inclined downward from the horizontal plane 70, and the angle θ between the straight line 80 and the horizontal plane 70 is 45 degrees or less.

When the angle between the straight line 80 and the horizontal plane 70 exceeds 45, the connection hole 132 is further moved to the center side of the tub 11, so that the shock absorber 150 installed in the connection hole 132 is a tub ( 11) to support the central part.

When the shock absorber 150 supports the central portion of the tub 11, it is easy to cancel the vertical vibration of the tub 11, but it is difficult to cancel the horizontal vibration of the tub 11.

In addition, if horizontal vibration occurs in the tub 11 when the shock absorber 150 supports the central portion of the tub 11, the cylinder 152 and the rod 154 may be spaced apart, causing deformation or damage to the shock absorber. It becomes possible.

On the contrary, when a plurality of shock absorbers 150 are installed at both sides of the tub 11, the vertical vibration generated in the tub 11 is offset by the rod 154 coming out of the cylinder 152 inside or outside. The tub 11 is supported not to flow in the horizontal direction by the rod 154 fixed to the bottom surface.

Since connection holes 132 are formed at both front ends of the tub 11 and both rear ends of the tub 11, the shock absorber 150 is installed between the connection hole 132 and the bottom of the cabinet 110. The tub 11 of the embodiment is fluidly supported by four shock absorbers 150.

When the shock absorber 150 extends in the vertical direction from the connection hole 132 formed at four positions of the tub 11 and is connected to the bottom of the cabinet 110, four shock absorbing members 150 are disposed at the vertex positions of the rectangles. The tub 11 is supported.

The shock absorber 150 is installed in the tangential direction passing through the connection hole 132 during the tangential line of the tub 11.

Therefore, the bearing force is generated toward the center of the tub 11 by four shock absorbers 150 respectively installed at both sides of the tub 11, thereby suppressing the lateral flow of the tub 11.

Here, the tangent means a line in contact with the circumferential surface of the circle formed by the front shape of the tub 11 and the tangent of the tub 11 passing through the connection hole 132 is almost vertical.

Therefore, when four shock absorbers 150 are installed in the tangential direction of the tub 11 passing through the connection hole 132, the tub 11 is disposed in a space between the four shock absorbers 150 that are upright as a pillar.

Therefore, the four shock absorbers 150 can suppress the vertical vibration of the tub 11 and at the same time suppress the tub 11 from flowing in the lateral direction.

In addition, since the size of the tub 11 and the drum 60 is smaller than the set value, the mini drum washing machine of the present embodiment is configured to suppress vibration generated in the tub 11 and the drum 60 by the four shock absorbers 150. It can be offset enough.

As described above, the mini drum washing machine according to the present embodiment does not require a separate elastic member for mounting the tub 11, thereby reducing the number of parts and reducing the size and weight of the drum washing machine.

In particular, since the elastic member for mounting the tub 11 is omitted, the height of the cabinet 110 can be reduced.

The shock absorber 150 of the present embodiment includes a cylinder 152 installed on one of the vibration objects or the bottom surface, and a rod installed on the other of the vibration object or the bottom surface and inserted into the cylinder 152 so that it can be projected. 154 and an elastic member 156 which prevents the rod 154 from flowing laterally.

Here, the vibration object means the tub 11, the bottom surface means the bottom surface of the cabinet 110.

The upper end of the cylinder 152 is rotatably installed in the connecting hole 132, the lower end of the rod 154 is fixed to the bottom surface of the cabinet 110.

When the drum 60 is rotated, a rolling phenomenon may occur in which one side of the tub 11 is raised and the other side of the tub 11 is lowered by the vibration generated in the tub 11.

At this time, the pair of shock absorbers 150 installed on one side of the tub 11 is a pair of shock absorbers 150 are inserted into the cylinder 152 and the rod 154 is installed on the other side of the tub 11. As the rod 154 protrudes out of the cylinder 152, the vibration generated by the rolling shape of the tub 11 may be offset.

An opening 152a is formed at one end of the cylinder 152 so that the rod 154 is inserted, and a flow preventing part 158 is installed at the opening 152a.

Since the inner diameter of the opening 152a is larger than the outer diameter of the rod 154, it is possible to prevent the cylinder 152 from being damaged by the lateral vibration generated while the tub 11 flows.

In addition, the flow rate preventing portion 158 provided between the cylinder 152 and the rod 154 is to maintain the discharge rate of the air filled in the cylinder 152 below the set value.

When the tub 11 flows in the lateral direction during the washing operation, the flow preventing part 158 is deformed while the cylinder 152 and the rod 154 are spaced apart, and thus the cylinder 152 by the lateral vibration transmitted from the tub 11. Or the rod 154 can be prevented from being deformed or broken.

When the tub 11 flows in the vertical direction during the washing operation, the rod 154 is inserted into the cylinder 152, and the air filled in the cylinder 152 is discharged to the outside of the cylinder 152 to generate vibration in the vertical direction. Offset.

At this time, since the discharge speed of the air filled in the cylinder 152 by the flow preventing member 158 is adjusted below the set speed, it is possible to effectively cancel the vibration in the vertical direction.

The flow preventing part 158 includes a jaw portion 158a formed on the circumferential surface of the rod 154, a rod disposed between the jaw portion 158a and the cylinder 152, formed in a cap shape, and surrounding the jaw portion 158a. The finishing plate 158c which is covered on the top of the 154 and the rod 154 passes through, and the flow preventing member 158b which is interposed between the jaw portion 158a and the closing plate 158c and is in close contact with the rod 154. Include.

The closing plate 158c is formed in a hat shape surrounding the jaw portion 158a and the flow preventing member 158b, and a hole portion is formed in the center thereof to insert the rod 154 through the hole portion.

Finishing plate 158c is made of a synthetic resin material, the flow preventing member 158b is made of an elastic material.

Therefore, when the cylinder 152 and the rod 154 are spaced apart, the closing plate 158c and the flow preventing member 158b are deformed and the closing plate 158c is in close contact with the inner wall of the cylinder.

Therefore, in the state where the cylinder 152 and the rod 154 are spaced apart, the air is prevented from being lost along the gap between the cylinder 152 and the rod 154 and the breakage of the cylinder 152 or the rod 154 is prevented. do.

Since the elastic member 156 includes a coil spring interposed between the finishing plate 158c and the inner wall of the cylinder 152, the coil spring is compressed when the rod 154 is inserted into the cylinder 152 by the vertical vibration. This cancels out the vibration in the vertical direction.

In addition, since the coil spring is formed to have a larger diameter toward the lower side to form a trapezoidal side shape, a restoring force for restoring the cylinder 152 to its original state is formed when the cylinder 152 and the rod 154 are separated from each other.

The diameter of the elastic member 156 made of a coil spring is formed so that the bottom is the largest, the top is the smallest, the diameter of the elastic member 156 is smaller from the bottom to the top.

Therefore, the lower portion of the elastic member 156 is difficult to flow in the lateral direction, and relatively the upper portion of the elastic member 156 is easy to flow in the lateral direction, so after the upper portion of the elastic member 156 is deformed in the lateral direction, the elastic member The elastic member 156 is restored to an upright state by the restoring force formed at the lower side of the part 156.

When the tub 11 flows laterally by the vibration transmitted from the drum 60, the cylinder 152 connected to the connection hole 132 may be spaced apart from the rod 154. In this case, the inside of the cylinder 152 The elastic member 156 is installed in the elastic force is formed to return to the upright state.

Therefore, the elastic member 156, which has been deformed in the lateral direction, returns to its original state, thereby canceling the lateral vibration of the tub 11 while restoring the cylinder 152 to its original position.

As described above, since the vertical vibration and the lateral vibration of the tub 11 can be canceled by the shock absorber 150 installed between the tub 11 and the bottom of the cabinet 110, the tub 11 and the cabinet 110 can be canceled at the same time. (110) There is no need for a separate shock absorber 150 between the upper surface.

Therefore, the effect of miniaturizing the drum washing machine will appear.

6 is a cross-sectional view showing a connection structure between the tub and the gasket of the mini drum washing machine according to an embodiment of the present invention, Figure 7 is a protruding gasket is added to the gasket of the mini drum washing machine according to an embodiment of the present invention 8 is a cross-sectional view illustrating a state in which a ring spring is added to a gasket of a mini drum washing machine according to an embodiment of the present invention, and FIG. 9 is a mini drum washing machine according to an embodiment of the present invention. Is a cross-sectional view showing the weight portion of the.

6 to 9, the tub 11 of the mini drum washing machine according to the exemplary embodiment of the present invention is provided with a gasket 20 and a weight part 30.

The tub 11 is embedded in the cabinet 110, and the tub 11 has a shape in which one side is opened in the direction of the door 80 and wash water is stored.

The gasket 20 has one end coupled to the tub 11 and the other end coupled to the cabinet 110.

In addition, the gasket 20 includes an elastic material such as rubber, and has a corrugated shape. Therefore, the length of the gasket 20 is variable in the vibration generation process of the tub (11).

Here, the coupling structure in which the other end of the gasket 20 is connected to the opening of the cabinet 110, in which the door 80 is rotatably installed, can be easily implemented by those skilled in the art. The drawings will be omitted.

The weight portion 30 is coupled to the tub 11 to maintain the balance of the tub 11 by the weight of the weight portion 30.

Since the driving part is mounted to the rear end of the tub 11 and the weight 30 is coupled to the front end of the tub 11, the tub 11 flows by reducing the weight difference between the rear end and the front end of the tub 11. Prevent it.

Tub 11 according to an embodiment of the present invention is made by a cylindrical member forming a cylindrical shape, the front end and the rear end forms an open shape.

The rear end of the tub 11 is connected to the rear panel to form a space in which the wash water is fresh, and since the gasket 20 is installed at the front end of the tub 11, the washing water is spaced between the tub 11 and the cabinet 110. This will prevent the loss.

Since the tub 11 of the present embodiment is made of one cylindrical member, the tub 11 may be manufactured by one injection process, and the front end portion of the tub 11 and the cabinet 110 may not be reduced in diameter by the one end of the tub 11. Gasket 20 is installed between the ().

Therefore, the front panel installed at the front end of the tub 11 is omitted, thereby reducing the number of parts and reducing the time and cost required to manufacture the tub 11.

The tub 11 is formed in a cylindrical shape with a larger diameter toward the door 114 side.

When the drainage device is connected to the front part of the tub 11, the washing water remaining in the tub 11 flows to the front part of the tub 11 along the inclined surface and is easily drained, thereby preventing the washing water from remaining in the tub 11. You can do it.

Since the mounting hole 13 is formed at the front end of the tub 11, and the locking portion 14 protrudes from the outer circumferential surface of the tub 11, the gasket 20 penetrates the mounting hole 13 to lock the locking portion 14. It is jammed in.

The engaging portion 14 of the present embodiment is provided with a engaging projection 15 and the engaging projection 16.

The engaging protrusion 15 protrudes from the outer circumferential surface of the tub 11 and is located close to the mounting hole 13.

A plurality of mounting holes 13 are disposed along the circumferential surface of the tub 11, and are disposed when the mounting holes 13 are maintained at a constant interval.

The engaging projection 16 extends in the opposite direction of the mounting hole 13 at the end of the engaging projection 15. On the other hand, the locking portion 14 may be made of only the engaging projection (15) excluding the locking projection (16).

The gasket 20 according to the exemplary embodiment of the present invention is provided with a curved body 21, a through body 22, and a combined body 23.

The curved body 21 is bent to be caught by the catching part 14, and the curved body 21 is bent once more to surround the catching part 14, and an end portion of the curved body 21 which is doublely bent is coupled. It is in close contact with the projection 15 is fixed to the locking projection (16).

The through body 22 is connected to the curved body 21 and passes through the mounting hole 13. The through body 22 is formed integrally with the curved body 21. In this case, an additional seal may be added to the through body 22 to prevent leakage through the mounting hole 13.

The assembly 23 is integrally formed with the through body 22 and coupled to the cabinet 110 to support the tub 11.

The gasket 20 according to an embodiment of the present invention is further provided with a protrusion 24, the protrusion 24 is coupled to the curved body 21, protruding in the lateral direction is caught on the tub 11 .

The protrusion 24 is further bonded to the curved body 21 or integrally molded with the curved body 21 to be in contact with the outer surface of the tub 11.

The gasket 20 according to the embodiment of the present invention is further provided with a ring spring 25.

The ring spring 25 keeps the curved body 21 fixed to the locking portion 14 by bringing the end portion of the curved body 21 into close contact with the locking portion 14.

The ring spring 25 has a diameter corresponding to the tub 11 so as to surround the tub 11 and is inflated by an external force.

End of the curved body 21 is bent to be in close contact with the engaging projection 16, the engaging projection 15 and the tub 11 to form an installation space for the ring spring 25 is inserted.

The weight portion 30 according to the embodiment of the present invention is provided with an installation bracket 31 and a balance weight (32).

Mounting bracket 31 is coupled to the outer surface of the tub 11, a plurality of mounting bracket 31 is disposed along the circumferential surface of the tub (11).

Counterweight 32 is coupled to the mounting bracket 31, the balance of the tub is maintained by the self-load of the counterweight (32).

The counterweight 32 has a cross-section 'H' shape, the groove is formed on the left and right sides of the counterweight 32, the installation bracket 31 is inserted into the groove.

The fixing body 33 having a bolt shape penetrates the counterweight 32 and is screwed to the mounting bracket 31 to maintain a state in which the counterweight 32 is coupled to the mounting bracket 31.

The counterweight 32 can be manufactured in various shapes according to the state of the tub. For example, the balance weight 32 may be coupled to the plurality of mounting brackets 31 having a ring or semi-circular cross section, or selectively coupled to the mounting brackets 31 having a circular cross section.

Looking at the operation of the drum washing machine according to an embodiment of the present invention configured as described above are as follows.

When the user starts the washing operation after storing the laundry inside the drum, the washing water is supplied to the tub 11 by the water supply device, and the washing operation proceeds while the drum 60 is rotated by the operation of the driving unit.

At this time, the vibration of the tub 11 is generated in the vertical direction or the lateral direction by the rotation of the drum 60, the vibration of the vertical direction is the rod 154 is mounted in the cylinder 152 and the elastic member 156 is Repeated compression expansion cancels the vertical vibration.

Vibration generated in the lateral direction of the tub 11 is offset the lateral vibration of the tub 11 while the cylinder 152 and the rod 154 is spaced apart and the flow preventing member 158b repeats deformation and restoration.

During the washing operation as described above, the gasket 20 is installed between the front end of the tub 11 and the cabinet 110 to prevent the wash water from being lost between the tub 11 and the cabinet 110. .

The curved body 21 formed at the end of the gasket 20 surrounds the locking portion 14, and the through body 22 connected to the curved body 21 is inserted into the mounting hole 13, and the through body 22 is formed. The coupled body 23 is connected to maintain the state coupled to the cabinet (110).

Therefore, the gasket 20 blocks the gap between the tub 11 and the cabinet 110 to prevent the wash water from being lost at the gap between the tub 11 and the cabinet 110.

Since the protruding body 24 is formed in the curved body 21, the gasket 20 is closely fixed to the locking portion 14 and the tub 11 by being in close contact with the outside of the tub 11.

Therefore, the gasket 20 is effectively prevented from being separated from the tub 11.

In addition, the curved body 21 is a ring-shaped ring spring 25 is expanded by an external force so that the end portion of the curved body 21 is in close contact with the outside of the locking projection 16, the engaging projection 15 and the tub 11, respectively. ) Is installed at the end.

Therefore, the curved body 21 is in close contact with the tub 11 to prevent the gasket 20 from being separated from the tub 11 by an external force.

On the other hand, since the balance weight 32 is coupled to the mounting bracket 31 coupled to the tub 11, the balance of the tub 11 is maintained by the weight of the balance weight 32, and the gasket 20 deformed during the washing operation. And counterweight 32 will be prevented from interfering.

As a result, it is possible to provide a shock absorber capable of preventing the shock absorber from flowing laterally and a mini drum washing machine having the same.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

In addition, a shock absorber and a mini drum washing machine having the same have been described as an example, but this is merely exemplary, and the shock absorber of the present invention may be used in other products other than the mini drum washing machine.

Accordingly, the true scope of the present invention should be determined by the following claims.

11: Tub 20: Gasket
21: curved body 22: through body
23: binder 24: protrusion
25: ring spring 30: weight part
31: Mounting bracket 32: Counterweight
33: fixed body 60: drum
70: horizontal plane 80: straight
110: cabinet 132: connection hole
150: shock absorber 152: cylinder
152a: opening 154: rod
156: elastic member 158: flow preventing part
158a: jaw portion 158b: flow preventing member
158c: finishing plate

Claims (7)

A cylinder rotatably installed at both sides of the vibration object and having a lower end opened;
A rod fixed to the bottom surface and inserted into the opening of the cylinder so as to be retractable and installed upright in a tangential direction contacting the side end of the vibration object; And
And an elastic member interposed between the rod and the inner wall of the cylinder, the elastic member having a lower elastic force compared with the elastic force of the upper portion so as to prevent the cylinder from flowing in the lateral direction.
The method of claim 1,
The rod is provided with a flow preventing portion, wherein the flow preventing portion is interposed between the inner wall of the cylinder and the rod to prevent the cylinder from flowing in the lateral direction, it is characterized in that the sliding close contact with the inner wall of the cylinder Shock absorber.
The method of claim 2, wherein the flow preventing portion,
A jaw portion which protrudes from a circumferential surface of the rod to form a ring shape and an outer edge thereof is curved upwards;
A closing plate disposed between the jaw portion and the cylinder and formed in a cap shape and covering the upper portion of the rod to surround the jaw portion, and the rod passing through the jaw portion; And
The shock absorber, characterized in that it is formed in a ring shape to surround the jaw portion and fitted to the jaw portion, the flow preventing member is in close contact with the inner wall of the closing plate.
The method of claim 3,
The elastic member is a shock absorber, characterized in that it comprises a coil spring interposed between the closing plate and the inner wall of the cylinder.
5. The method of claim 4,
The coil spring is a shock absorber, characterized in that the diameter increases toward the lower side to form a trapezoidal side shape.
A cabinet forming an appearance of the drum washing machine and having a front surface opened and opened and closed by a door;
A tub installed inside the cabinet and rotatably installed with a drum in which laundry water is fresh and laundry is stored therein;
A cylinder rotatably installed at both sides of the tub and having a lower end opened;
A rod fixed to a bottom surface of the cabinet and inserted into the opening of the cylinder so as to be protruded and installed upright in a tangential direction contacting a side end of the vibration object; And
And a resilient member interposed between the rod and the inner wall of the cylinder, the elastic member having a lower elastic force compared with the elastic force of the upper portion to prevent the cylinder from flowing in the lateral direction.
A cabinet forming an appearance of the drum washing machine and having a front surface opened and opened and closed by a door;
A tub installed inside the cabinet and rotatably installed with a drum in which laundry water is fresh and laundry is stored therein;
A cylinder rotatably installed at both sides of the tub and having a lower end opened;
A rod fixed to a bottom surface of the cabinet and inserted into the opening of the cylinder so as to be protruded and installed upright in a tangential direction contacting a side end of the vibration object;
An elastic member interposed between the rod and the inner wall of the cylinder, the elastic member having a lower elastic force greater than that of an upper portion to prevent the cylinder from flowing laterally; And
And a weight portion coupled to the tub to maintain a balance of the tub.

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