KR101858229B1 - Suspension and mini drum type washing machine therewith - Google Patents

Abstract

The present invention relates to a shock absorber and a mini-drum washing machine having the shock absorber. More particularly, the present invention relates to a shock absorber capable of preventing a shock absorber from being sideways and a mini-drum washer having the shock absorber.
The present invention relates to a vibration control apparatus comprising a cylinder rotatably provided on both sides of an object to be vibrated and having a lower end opened, a cylinder fixed to the bottom surface and capable of protruding and retracting into an opening of the cylinder, And a resilient member interposed between the rod and the inner wall of the cylinder, wherein the resilient force of the lower portion is formed to be larger than the elastic force of the upper portion to prevent the cylinder from flowing in the lateral direction.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a shock absorber,

The present invention relates to a shock absorber and a mini-drum washing machine having the shock absorber. More particularly, the present invention relates to a shock absorber capable of preventing a shock absorber from being sideways and a mini-drum washer having the shock absorber.

A general drum washing machine includes a cabinet, a tub installed inside the cabinet and having washing water dewatered, a drum rotatably installed in the tub and accommodating the laundry, a water supply device supplying washing water into the tub, A driving device for rotating the drum to perform the washing operation, and a shock absorber for movably supporting the tub so as to prevent the vibration generated during the washing operation from being transmitted to the cabinet.

When the user starts the washing operation after the washing water is stored 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 progressed while the drum is rotated by the driving device.

At this time, vibrations are generated in the drum and the tub as the drum is rotated by the drive unit, and vibration transmitted from the turbine by the operation of the shock absorber is prevented from being transmitted to the cabinet.

Further, since the weight balancer is installed in the tub, the tub is prevented from flowing due to the vibration generated by the rotation of the drum.

Background Art [0002] The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2000-0033917 (published June 15, 2000, entitled "Drum Washing Machine").

In general drum washing machines, a damper is provided between a bottom surface of a cabinet and a lower side of a tub to cancel a vibration generated during a washing operation because the capacity of the tub is formed to be larger than a set value. Between the upper surface of the cabinet and the upper side of the tub The vibration can be canceled only if the elastic member is installed in the vibration damping device, and the shock absorber can not be simplified.

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

In addition, since the damper installed between the cabinet bottom surface of the general drum washing machine and the lower side of the tub is inclined, the cylinder and the rod are separated from each other due to the rolling phenomenon occurring in the tub during the washing operation, There is a problem.

Since the end of the tub facing the door is opened and the opening of the tub is formed to be small in comparison with the diameter of the tub, it is difficult to manufacture the tub by a single process, so that the front portion and the rear portion of the tub are separately manufactured So that it is difficult to reduce the manufacturing process of the tub.

In addition, since the weight balancer is installed around the front and the opening of the tub in a general drum washing machine, the length of the cabinet is sufficiently long to prevent the weight balancer from interfering with the front panel of the cabinet so that it is difficult to reduce the size and weight of the drum washing machine have.

In a general drum type washing machine, a pair of dampers are provided on the lower side of the tub, and a pair of elastic members are provided on the upper side of the tub to ensure a sufficient flowable amount of the tub. There is a problem that it is difficult to reduce the size of the drum washing machine because the space 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, and the mounting structure of the shock absorber and the weight balancer is improved to suppress the flow of the tub and reduce the interval between the tub and the cabinet And to provide a shock absorber capable of reducing the size and weight of the drum washing machine and simplifying the manufacturing process of the tub, and a mini-drum washing machine having the same.

According to an aspect of the present invention, there is provided a vibration device comprising: a cylinder rotatably installed on both sides of an object to be vibrated and having a lower end opened; A rod which is fixed to the bottom surface and is installed so as to be vertically tangent to the side end portion of the vibrating object; And an elastic member interposed between the rod and the inner wall of the cylinder, wherein the elastic force of the lower portion is formed to be larger than the elastic force of the upper portion to prevent the cylinder from flowing in the lateral direction.

The flow preventing portion is provided on the rod. 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, and is slidably attached to the inner wall of the cylinder. .

The flow prevention portion may include a jaw portion protruding from a circumferential surface of the rod and having a ring shape and an outer edge bent upward; A finishing plate disposed between the jaw and the cylinder and formed in a cap shape, the jaw portion being covered with an upper end of the rod to pass the rod; And a flow preventive member formed in a ring shape to surround the jaw portion and fitted to the jaw portion and closely attached to an inner wall of the finishing plate.

The elastic member may include a coil spring interposed between the finishing plate and the inner wall of the cylinder.

Further, the coil spring is characterized in that its diameter gradually increases toward the lower side so that the side surface has a trapezoidal shape.

Further, the present invention provides a drum washing machine comprising: a cabinet forming an outer appearance of a drum type washing machine and having a front opened and closed by a door; A tub installed inside the cabinet and having a drum to which wash water is dewatered and in which laundry is stored, is rotatably installed; A cylinder rotatably installed on both side portions of the tub and having a lower end opened; A rod fixed to a bottom surface of the cabinet and inserted in the opening of the cylinder so as to protrude and retract and to be tilted in a tangential direction in contact with a side end portion of the vibration target; And an elastic member interposed between the rod and the inner wall of the cylinder, wherein the elastic force of the lower portion is formed to be larger than the elastic force of the upper portion so as to prevent the cylinder from flowing in the lateral direction .

Further, the present invention provides a drum washing machine comprising: a cabinet forming an outer appearance of a drum type washing machine and having a front opened and closed by a door; A tub installed inside the cabinet and having a drum to which wash water is dewatered and in which laundry is stored, is rotatably installed; A cylinder rotatably installed on both side portions of the tub and having a lower end opened; A rod fixed to a bottom surface of the cabinet and inserted in the opening of the cylinder so as to protrude and retract and to be tilted in a tangential direction in contact with a side end portion of the vibration target; An elastic member interposed between the rod and the inner wall of the cylinder, wherein the elastic force of the lower portion is formed to be larger than the elastic force of the upper portion so as to prevent the cylinder from flowing in the lateral direction; And a weight unit coupled to the tub to maintain balance of the tub.

The shock absorber according to the present invention and the mini-drum washing machine having the shock absorber according to the present invention have an advantage in that the shock absorber can be prevented from being laterally spaced by the vibration generated during the washing operation so that the shock absorber can be prevented from being deformed or damaged .

Also, since the damper according to the present invention and the mini-drum washing machine having the damper according to the present invention support the lower portion of the tub, the damper installed on the lower side of the tub compensates the vertical vibration and the horizontal vibration, There is an advantage that the elastic member provided on the upper side of the tub can be omitted.

In addition, the damper according to the present invention and the mini-drum washing machine having the damper are fixed to the cabinet bottom surface in a state where the damper is connected to the outer surface of the tub and is upright in a substantially vertical direction, So that the elastic member provided on the upper side of the tub can be omitted and the number of parts can be reduced.

Further, since the tub of the mini-drum washing machine according to the present invention is formed of a cylindrical member whose diameter gradually increases toward the door side, the manufacturing process of the tub can be simplified, and when the drain device is installed in front of the tub, There is an advantage that it can be discharged.

Further, since the tub of the mini-drum washing machine according to the present invention is formed of a cylindrical member whose diameter gradually increases toward the door side, the manufacturing process of the tub can be simplified, and when the drain device is installed in front of the tub, There is an advantage that it can be discharged.

In addition, since the shock absorber according to the present invention and the mini-drum washing machine having the shock absorber according to the present invention are provided with a weight stand on the circumferential surface of the tub, interference between the weight balancer and the gasket can be prevented by vibration generated during the washing operation, Or damage can be prevented.

In addition, since the space required for the installation of the shock absorber is reduced and the size of the drum washing machine can be reduced, the shock absorber according to the present invention and the mini-drum washing machine having the shock absorber can advantageously be installed in various places such as a kitchen or a living room have.

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

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

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.

2 is a front view illustrating a mini-drum washing machine according to an embodiment of the present invention, and FIG. 3 is a perspective view of a mini-drum washing machine according to an embodiment of the present invention Sectional view showing a shock absorber of the mini-drum washing machine according to the second embodiment of the present invention.

4 is a cross-sectional view illustrating a flow prevention portion of a mini-drum washing machine according to an embodiment of the present invention, and FIG. 5 is an exploded perspective view illustrating a shock absorber of a mini-drum washing machine according to an embodiment of the present invention.

1 to 5, a drum type washing machine according to an embodiment of the present invention includes a cabinet 110, a tub 11 installed inside the cabinet 110 to wash the washing water, a tub 11, And a shock absorber 150 installed between the bottom surfaces of the cabinet 110 and simultaneously canceling the upward and downward flows of the tub 11 and the lateral flows of the tub 11.

A drum 60 is installed in the tub 11 and a driving device for rotating the drum 60 is installed on the back surface of the tub 11 so that the drum 60 is rotated by the driving device to perform the washing operation .

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

Therefore, since the drum washing machine according to the present embodiment does not require a separate elastic member provided between the tub 11 and the upper surface of the cabinet 110, the vibration reducing device including the shock absorber 150 can be simplified .

A straight line 80 connecting the center of the tub 11 and the connection hole portion 132 is formed at a distance of 45 degrees or less from the horizontal plane 70 Respectively.

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 obliquely downward from the horizontal plane 70 and the angle 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 surface 70 exceeds 45, the connection hole portion 132 moves further toward the center of the tub 11, so that the shock absorber 150 installed in the connection hole portion 132 is moved to the tub 11).

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

In addition, when the shock absorber 150 supports the center of the tub 11, when the tub 11 is horizontally vibrated, the cylinder 152 and the rod 154 are separated from each other, so that the shock absorber is deformed or damaged .

On the other hand, when a plurality of shock absorbers 150 are installed on both sides of the tub 11, the vertical vibration generated in the tub 11 cancels the load 154 while the rod 154 is projected toward or away from the cylinder 152, The tub 11 is supported by the rod 154 fixed to the bottom surface of the tub 110 so as not to flow in the horizontal direction.

Since the connecting hole 132 is formed at the both front ends of the tub 11 and the rear side of the tub 11 and the shock absorber 150 is installed between the connecting hole 132 and the bottom surface of the cabinet 110, The tub 11 of the embodiment is movably supported by the four shock absorbers 150.

When the shock absorber 150 extends vertically from the connection hole 132 formed at the four sides of the tub 11 and is connected to the bottom surface of the cabinet 110, four cushioning members 150 are arranged at the quadrangular corner points Thereby supporting the tub 11.

The shock absorber 150 is installed in a tangential direction passing through the connecting hole portion 132 in the tangent line of the tub 11.

Therefore, a supporting force is generated toward the center of the tub 11 by the four shock absorbers 150 provided on both side portions of the tub 11, so that the lateral flow of the tub 11 can be suppressed.

Here, the tangent line refers to 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 portion 132 is substantially perpendicular.

Therefore, when the four shock absorbers 150 are installed in the tangential direction of the tub 11 passing through the connecting hole portion 132, the tub 11 is disposed in a space between the four shock absorbers 150 standing upright like a column.

Therefore, the four shock absorbers 150 can cancel out the vertical vibration of the tub 11 and inhibit the tub 11 from flowing in the lateral direction.

Since the sizes of the tub 11 and the drum 60 are smaller than the set values, the vibration generated in the tub 11 and the drum 60 by the four shock absorbers 150 So that it can sufficiently cancel out.

As described above, since the mini-drum washing machine according to the present embodiment does not require a separate elastic member for holding the tub 11, the number of parts is reduced, and the size and weight of the drum washing machine can be reduced.

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

The vibration damping device 150 of the present embodiment is a vibration damping device that includes a cylinder 152 mounted on one of an object to be shaken or a floor surface and a rod 152 mounted on the other one of the vibration- 154 and an elastic member 156 that prevents the rod 154 from flowing laterally.

Here, the object to be vibrated refers to the tub 11, and the bottom surface refers to the bottom surface of the cabinet 110.

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

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 when the drum 60 is rotated.

The pair of shock absorbers 150 installed at one side of the tub 11 is connected to the pair of shock absorbers 150 inserted into the cylinder 152 and installed at the other side of the tub 11, The rod 154 protrudes outside the cylinder 152 and can cancel the vibration caused by the rolling shape of the tub 11. [

One end of the cylinder 152 is formed with an opening 152a so that the rod 154 is inserted and the flow preventing portion 158 is provided in the opening 152a.

Since the inner diameter of the opening 152a is formed to be 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 as the tub 11 is moved.

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

When the tub 11 is laterally moved during the washing operation, the flow preventing portion 158 is deformed and the cylinder 152 and the rod 154 are separated from each other. Therefore, the cylinder 152 Or the rod 154 is 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, .

At this time, since the discharge speed of the air filled in the cylinder 152 is controlled by the flow preventing member 158 to be less than the set speed, the vibration in the vertical direction can be effectively canceled.

The flow prevention portion 158 includes a chin portion 158a formed on the circumferential surface of the rod 154 and a rod 158 disposed between the chin portion 158a and the cylinder 152 and formed in a cap shape, A closing plate 158c that covers the upper end of the rod 154 and through which the rod 154 is passed and a flow preventing member 158b which is interposed between the jaws 158a and the closing plate 158c and is in tight contact with the rod 154 .

The finishing plate 158c is formed in a hat shape to enclose the chin 158a and the flow preventive member 158b, and a hole is formed at the center to insert the rod 154 through the hole.

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

Therefore, when the cylinder 152 and the rod 154 are separated from each other, the finishing plate 158c and the flow preventing member 158b are deformed and the finishing plate 158c is brought into close contact with the inner wall of the cylinder.

Therefore, it is possible to prevent the air from being lost along the interval between the cylinder 152 and the rod 154 while the cylinder 152 and the rod 154 are separated from each other and to prevent the cylinder 152 or the rod 154 from being damaged do.

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

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

The diameter of the elastic member 156 formed by the coil spring is formed such that the lower end is the largest, the upper end is the smallest, and the diameter of the elastic member 156 decreases from the lower end to the upper end.

Therefore, since the lower portion of the elastic member 156 is less likely to flow laterally and the upper portion of the elastic member 156 relatively easily flows laterally, the upper portion of the elastic member 156 is laterally deformed, The elastic member 156 is restored to the upright state by the restoring force formed on the lower side of the elastic member 156.

When the tub 11 is laterally moved by the vibration transmitted from the drum 60, the cylinder 152 connected to the connection hole portion 132 may be separated from the rod 154. At this time, The resilient member 156 installed on the support portion 156 is formed with an elastic force to return to the upright state.

Therefore, the laterally deformed elastic member 156 is restored to the original state, and the cylinder 152 is restored to the original position, thereby canceling the lateral vibration of the tub 11.

Since the vertical vibration and the lateral vibration of the tub 11 can be canceled simultaneously by the shock absorber 150 installed between the tub 11 and the bottom surface of the cabinet 110 as described above, A separate shock absorber 150 is not required between the upper surface of the body 110.

Accordingly, the drum washing machine is miniaturized.

FIG. 6 is a cross-sectional view illustrating a connection structure between a turbine and a gasket of a mini-drum washing machine according to an embodiment of the present invention. FIG. 7 is a cross- 8 is a cross-sectional view illustrating a state where a ring spring is added to a gasket of a mini-drum washing machine according to an embodiment of the present invention. FIG. 9 is a side view of a mini-drum washing machine according to an embodiment of the present invention. Sectional view showing the weight portion of FIG.

6 to 9, the tub 11 of the mini-drum washing machine according to the embodiment of the present invention is provided with a gasket 20 and a weight portion 30. As shown in FIG.

The tub 11 is housed in the cabinet 110 and the tub 11 is shaped to open at one side in the direction of the door 80, and wash water is stored.

One end of the gasket 20 is coupled to the tub 11 and the other end of the gasket 20 is coupled to the cabinet 110.

Further, 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 process of generating the vibration of the tub 11.

Since 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 carried out by those skilled in the art, The drawing is omitted.

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

Since the driving portion is mounted on the rear end of the tub 11 and the weight portion 30 is coupled to the front end portion of the tub 11, the weight difference between the rear end portion and the front end portion of the tub 11 is reduced, .

The tub 11 according to an embodiment of the present invention is formed of a cylindrical member having a cylindrical shape, and has a shape in which a front end portion and a rear end portion are opened.

The rear end of the tub 11 is connected to the rear panel to form a space in which the washing water is drained and the gasket 20 is installed at the front end of the tub 11, Thereby preventing loss.

Since the tub 11 of the present embodiment is made up of one cylindrical member, it can be manufactured by one injection process and the front end portion of the tub 11 and the front end portion of the cabinet 110 The gasket 20 is installed.

Therefore, the number of components can be reduced by omitting the front panel installed at the front end of the tub 11, and the time and cost required for manufacturing the tub 11 can be reduced.

The tub (11) is formed into a cylindrical shape having a larger diameter toward the door (114) side.

When the drainage device is connected to the front portion of the tub 11, the washing water remaining in the tub 11 flows toward the front side of the tub 11 along the inclined surface and is easily drained, .

A mounting hole 13 is formed at the front end of the tub 11 and a locking portion 14 is protruded from the outer circumferential surface of the tub 11 so that the gasket 20 passes through the mounting hole 13, As shown in Fig.

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

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

A plurality of mounting holes 13 are arranged along the circumferential surface of the tub 11, and the mounting holes 13 are arranged to be spaced apart from each other by a predetermined distance.

The engaging protrusion 16 extends in the direction opposite to the mounting hole 13 at the end of the engaging projection 15. Alternatively, the engaging portion 14 may be formed only by the engaging projection 15 except for the engaging projection 16.

The gasket 20 according to an embodiment of the present invention is provided with a flexure body 21, a penetration body 22, and a coupling body 23.

The bending member 21 is bent to be caught by the bending member 14 and the bending member 21 is bent once more to wrap the bending member 14 and the end of the bending member 21, And is tightly fixed to the projection (16) by being brought into close contact with the projection (15).

The penetrator 22 is connected to the flexure 21 and passes through the mounting hole 13. This penetration body 22 is formed integrally with the flexure 21. At this time, a separate sealing ring is added to the penetration member 22 to prevent leakage through the mounting hole 13.

The coupling member 23 is formed integrally with the penetrating member 22 and is coupled to the cabinet 110 to support the tub 11. [

The gasket 20 according to the embodiment of the present invention further includes a protruding body 24 which is coupled to the flexure body 21 and protruded in the lateral direction to be engaged with the tub 11 .

The projecting body 24 is further joined to the flexure body 21 or integrally molded with the flexure body 21 and brought into 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 brings the end of the flexure body 21 into close contact with the engagement portion 14 to hold the flexure body 21 in the locked state by the engagement portion 14.

The ring spring 25 has a diameter corresponding to that of the tub 11 so as to enclose the tub 11 and is expanded by an external force.

The end of the flexure body 21 is bent so as to be in close contact with the engaging projection 16, the coupling projection 15 and the tub 11 to form an installation space for inserting the ring spring 25. [

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

The mounting bracket 31 is coupled to the outer surface of the tub 11 and a plurality of mounting brackets 31 are disposed along the circumferential surface of the tub 11. [

The balance weight 32 is coupled to the mounting bracket 31 and the balance of the tub is maintained by the own weight of the balance weight 32. [

The balance weight 32 has a cross section of 'H' shape. The balance weight 32 has grooves formed on the left and right sides thereof, and the mounting bracket 31 is inserted into the groove.

A bolt-shaped fixing body 33 is screwed into the mounting bracket 31 through the counterweight 32 to keep the balance weight 32 engaged with the mounting bracket 31.

The balance weight 32 can be manufactured in various shapes according to the state of the tub. For example, the balance weights 32 may have a ring or semicircular cross section and may be coupled to a plurality of mounting brackets 31, or may be selectively coupled to the mounting bracket 31 with an arcuate cross section.

The operation of the drum washing machine according to an embodiment of the present invention will be described below.

When the washing operation is started after the user has stored the laundry in the drum, the washing water is supplied to the tub 11 by the water supply unit, and the drum 60 is rotated by the operation of the driving unit, thereby progressing the washing operation.

At this time, vibration is generated in the vertical direction or the lateral direction in the tub 11 by the rotation of the drum 60. The vibration in the vertical direction causes the rod 154 to protrude into the cylinder 152 and the elastic member 156 The vibration in the vertical direction is canceled while the compression expansion is repeated.

The vibration generated in the lateral direction of the tub 11 causes the cylinder 152 and the rod 154 to be separated from each other and the flow preventive member 158b repeats deformation and restoration to cancel the lateral vibration of the tub 11. [

The gasket 20 is installed between the front end of the tub 11 and the cabinet 110 to prevent washing water from being lost between the tub 11 and the cabinet 110 .

The bending member 21 formed at the end of the gasket 20 surrounds the bending member 14 and the bending member 22 connected to the bending member 21 is inserted into the mounting hole 13, The coupling member 23 connected to the cabinet 110 remains connected to the cabinet 110.

The gap between the tub 11 and the cabinet 110 is blocked by the gasket 20 to prevent the washing water from being lost at a distance between the tub 11 and the cabinet 110.

The protrusion body 24 is formed on the bending body 21 so that the bending body 21 is closely attached to the outside of the tub 11 so that the gasket 20 is secured to the fastening portion 14 and the tub 11 in a double manner.

Therefore, it is possible to effectively prevent the gasket 20 from being detached from the tub 11.

A ring spring 25 that is expanded by an external force so that the end of the bending body 21 is in close contact with the outer side of the engaging projection 16 and the engagement projection 15 and the tub 11 is engaged with the bending body 21 As shown in Fig.

Therefore, the flexure body 21 is brought into close contact with the tub 11 to prevent the gasket 20 from being detached from the tub 11 by an external force.

Since the balance weight 32 is engaged with 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, which is deformed during the washing operation, And the balance weight 32 from interfering with each other.

Thus, it is possible to provide a shock absorber capable of preventing the shock absorber from flowing in the lateral direction, and a mini-drum washing machine having the shock absorber.

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. .

Also, although the shock absorber and the mini-drum washing machine having the shock absorber have been described as examples, the shock absorber of the present invention can also be used in 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: penetrating body
23: combination body 24:
25: ring spring 30: weight part
31: mounting bracket 32: balance weight
33: Fixture 60: Drum
70: Horizontal plane 80: Straight line
110: cabinet 132: connection hole portion
150: shock absorber 152: cylinder
152a: opening 154: rod
156: elastic member 158:
158a: jaw portion 158b:
158c: finishing plate

Claims (7)

A cylinder rotatably installed on both side portions of the vibration target and having a lower end opened;
A rod which is fixed to the bottom surface and is installed so as to be vertically tangent to the side end portion of the vibrating object; And
And an elastic member interposed between the rod and the inner wall of the cylinder, wherein the elastic force of the lower portion is formed to be larger than the elastic force of the upper portion so as to prevent the cylinder from flowing in the lateral direction,
A flow preventing portion is provided on the rod,
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 and is slidably in close contact with the inner wall of the cylinder,
The flow-
A jaw portion protruding from a circumferential surface of the rod and having a ring shape and an outer rim bent upward;
A finishing plate disposed between the jaw and the cylinder and formed in a cap shape, the jaw portion being covered with an upper end of the rod to pass the rod; And
And a flow preventive member which is formed in a ring shape so as to surround the jaw portion and is fitted to the jaw portion and is brought into close contact with the inner wall of the finishing plate.
delete delete The method according to claim 1,
Wherein the elastic member is a coil spring interposed between the finishing plate and the inner wall of the cylinder.
5. The method of claim 4,
Wherein the coil spring has a larger diameter toward the lower side so that the side surface has a trapezoidal shape.
A cabinet forming an outer appearance of the drum washing machine and having a front opening and being opened and closed by a door;
A tub installed inside the cabinet and having a drum to which wash water is dewatered and in which laundry is stored, is rotatably installed;
A cylinder rotatably installed on both side portions of the tub and having a lower end opened;
A rod fixed to the bottom surface of the cabinet and inserted in the opening of the cylinder so as to protrude and to be tilted in contact with the side end of the tub; And
And an elastic member interposed between the rod and the inner wall of the cylinder, wherein the elastic force of the lower portion is formed larger than the elastic force of the upper portion to prevent the cylinder from flowing in the lateral direction,
Wherein the flow preventing portion is provided on the rod, 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 and is slidably in close contact with the inner wall of the cylinder,
The flow-
A jaw portion protruding from a circumferential surface of the rod and having a ring shape and an outer rim bent upward;
A finishing plate disposed between the jaw and the cylinder and formed in a cap shape, the jaw portion being covered with an upper end of the rod to pass the rod; And
And a flow preventive member formed in a ring shape to surround the jaw portion and fitted to the jaw portion and closely contacting the inner wall of the finishing plate.
A cabinet forming an outer appearance of the drum washing machine and having a front opening and being opened and closed by a door;
A tub installed inside the cabinet and having a drum to which wash water is dewatered and in which laundry is stored, is rotatably installed;
A cylinder rotatably installed on both side portions of the tub and having a lower end opened;
A rod fixed to the bottom surface of the cabinet and inserted in the opening of the cylinder so as to protrude and to be tilted in contact with the side end of the tub;
An elastic member interposed between the rod and the inner wall of the cylinder, wherein the elastic force of the lower portion is formed to be larger than the elastic force of the upper portion so as to prevent the cylinder from flowing in the lateral direction; And
And a weight portion coupled to the tub to balance the tub,
Wherein the flow preventing portion is provided on the rod, 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 and is slidably in close contact with the inner wall of the cylinder,
The flow-
A jaw portion protruding from a circumferential surface of the rod and having a ring shape and an outer rim bent upward;
A finishing plate disposed between the jaw and the cylinder and formed in a cap shape, the jaw portion being covered with an upper end of the rod to pass the rod; And
And a flow preventive member formed in a ring shape to surround the jaw portion and fitted to the jaw portion and closely contacting the inner wall of the finishing plate.

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