KR20150011218A - Laundry treatment apparatus - Google Patents

Abstract

A laundry treatment apparatus according to an embodiment of the present invention comprises: a casing; an outer tube which is arranged inside the casing; a horizontal vibration absorbing device which connects the outer tube and the casing to each other. The horizontal vibration absorbing device includes: a casing connection part which is connected to the casing; an outer tube connection part which is connected to the side surface of the outer tube and has displacement against the casing connection part; and a damper which provides damping force by corresponding to the displacement of the outer tube connection part against the casing connection part. The casing connection part is located under the outer tube connection part.

Description

[0001] The present invention relates to a laundry treatment apparatus,

The present invention relates to a laundry processing apparatus capable of attenuating horizontal vibration of a bathtub.

2. Description of the Related Art Generally, a laundry processing apparatus is a device for treating laundry by applying physical and chemical actions to laundry, including a washing machine for removing contamination of laundry, a dehydrator for spinning laundry at high speed by rotating the laundry, Or a dryer for drying wet laundry by applying hot air.

Such a laundry processing apparatus includes an outer tank accommodated in the casing in a form of being suspended by a support rod, and an inner tub rotated in the outer tub in a state in which the laundry (or cloth) is accommodated. In the case of a washing machine, The washing machine may further include a pulsator (or a washing blade). Such a configuration causes vibration of the outer tub when the inner tub or the pulsator rotates, and therefore, a conventional laundry processing apparatus is equipped with a device for buffering the vibration of the outer tub.

Conventionally, a shock absorber connecting the support rod and the outer tank is provided. However, the shock absorber mainly serves to reduce the vertical vibration of the outer tank, which is not enough to reduce the vibration in the horizontal direction.

Particularly, in recent years, in order to improve the usability of the residential space, studies have been actively conducted to maximize the capacity of the outer tub, without increasing the overall size of the laundry processing apparatus as much as possible. The spacing between outer tanks is getting narrower. As the interval between the casing and the outer tank becomes narrower, the possibility of collision between the outer tank and the casing due to the vibration in the horizontal direction increases, so that the vibration in the horizontal direction of the outer tank can be more effectively reduced Preparing a plan is very important.

A problem to be solved by the present invention is to provide a laundry processing apparatus capable of reducing the horizontal vibration of the outer tank.

A laundry processing apparatus according to an embodiment of the present invention includes a casing; An outer tub disposed in the casing; And a horizontal vibration damping device connecting the outer tank and the casing, wherein the horizontal vibration damping device comprises: a casing connecting part connected to the casing; An outer tubular connection portion connected to a side surface of the outer tub and having a displacement with respect to the casing connecting portion according to a vibration of the outer tub; And a damper for providing a damping force corresponding to a displacement of the outer tubular connection portion with respect to the casing connection portion, wherein the casing connection portion is located below the outer tubular connection portion.

The laundry processing apparatus of the present invention has an effect of reducing the horizontal vibration of the outer tank.

Further, the laundry processing apparatus of the present invention has the effect of expanding the capacity of the outer tank.

Further, the laundry processing apparatus of the present invention has an effect of preventing the occurrence of abnormal noise by improving the durability by preventing the collision between the outer tank and the casing.

Further, in the laundry processing apparatus of the present invention, the vibration of the outer tank is rapidly attenuated even when a certain degree of eccentricity of the cloth is caused, so that the driving time for dispersing the cloth can be reduced. Therefore, in consideration of the fact that, in order to control the vibration of the outer tank to a certain level or less, the pulsar dispersion drive is performed to change the position of the bags in the inner tank, have.

FIG. 1 illustrates an interior of a washing machine according to an embodiment of the present invention.
FIG. 2 is a top view of the washing machine of FIG. 1, and schematically shows a cabinet, a bathtub, and a support rod in particular.
Figure 3 is a side view of the outer tank of Figure 2;
Figure 4 is a free-body diagram in a spring-damper-mass system.
FIG. 5 shows the construction of a horizontal vibration damping device in a washing machine according to a first embodiment of the present invention.
FIG. 6 illustrates the construction of a horizontal vibration damping device in a washing machine according to a second embodiment of the present invention.
FIG. 7 illustrates the construction of a horizontal vibration damping device in a washing machine according to a third embodiment of the present invention.
FIG. 8 shows the construction of a horizontal vibration damping device in a washing machine according to a fourth embodiment of the present invention.
FIG. 9 shows the construction of a horizontal vibration damping device in a washing machine according to a fifth embodiment of the present invention.
FIG. 10 shows the construction of a horizontal vibration damping device in a washing machine according to a sixth embodiment of the present invention.
11 is a view illustrating the construction of a horizontal vibration damping device in a washing machine according to a seventh embodiment of the present invention.
12 illustrates the construction of a horizontal vibration damping device in a washing machine according to an eighth embodiment of the present invention.
FIG. 13 illustrates the construction of a horizontal vibration damping device in a washing machine according to a ninth embodiment of the present invention.
FIG. 14 shows the construction of a horizontal vibration damping device in a washing machine according to a tenth embodiment of the present invention.
FIG. 15 shows the construction of a horizontal vibration damping device in a washing machine according to an eleventh embodiment of the present invention.
16 shows the construction of a horizontal vibration damping device in a washing machine according to a twelfth embodiment of the present invention.
FIG. 17 illustrates the construction of a horizontal vibration damping device in a washing machine according to a thirteenth embodiment of the present invention.
18 shows the construction of a horizontal vibration damping device in a washing machine according to a fourteenth embodiment of the present invention.
19 shows the construction of a horizontal vibration damping device in a washing machine according to a fifteenth embodiment of the present invention.
20 shows the construction of a horizontal vibration damping device in a washing machine according to a sixteenth embodiment of the present invention.
FIG. 21 illustrates a horizontal vibration damping device in a washing machine according to a seventeenth embodiment of the present invention.
FIG. 22 shows the construction of a horizontal vibration damping device in a washing machine according to an eighteenth embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, a washing machine will be described as an example of a laundry processing apparatus, but the present invention is not limited thereto.

FIG. 1 illustrates an interior of a washing machine according to an embodiment of the present invention. Referring to FIG. 1, a washing machine according to an embodiment of the present invention includes a casing 10 forming an outer appearance, operation keys for receiving various control commands from a user, and a display for displaying information on the operating state of the washing machine. And a door 7 that is rotatably installed in the casing 10 and opens and closes an entrance hole (not shown) through which the laundry enters and exits.

The outer tank 2 in which wash water is contained is suspended in the casing 10 by the support rod 15 and the inner tank 3 for accommodating the laundry is rotatably provided in the outer tank 2, A pulsator 4 is rotatably provided on the bottom of the rotor 3. The inner bath (3) is provided with a plurality of holes through which wash water flows.

The casing defined in the present invention suffices to form the outer appearance of the washing machine, but it is preferable that the casing is stationary so that one end of the support rod 15 hanging the outer tank 2 can be fixed by the casing.

The casing 10 is provided with a main body 12 having an opened upper side, a base 19 for supporting the main body 12, and a top portion provided on the upper side of the main body 12 and having an entrance / And may include a cover 7.

The pivot support portion 16 is fixed to the casing 10 and supports one end of the support rod 15 so as to be pivotable within a predetermined range. The pivot support portion 16 may be fixed to either the main body 12 or the top cover 7. [

The other end of the support rod (15) is connected to the outer tank (2) by the vertical vibration damping device (30). The upper and lower vibration damping device 30 connects the support rod 15 and the outer tub 2 and attenuates the vertical vibration of the outer tub 2 generated during operation of the washing machine. The vertical vibration damping device 30 may include a cap 31 fixed to the outer surface of the outer tank 2 and a spring 32 elastically deformed in accordance with the vibration of the outer tank 2. [ The support rod 15 passes through the cap 31 and a spring support portion 33 for supporting the spring 32 is provided at one end of the support rod 15.

When the outer tank 2 is vibrated, the cap 31 is moved integrally with the outer tank 2, and is lifted and lowered along the support rod 15. The frictional force acting between the inner peripheral surface of the cap 31 and the spring support portion 33 during the movement of the cap 31 integrally with the outer tub 2, 33, and elasticity / restoring force due to the elastic deformation of the spring 32. The buffering action is performed by the interaction between the elastic force and the restoring force.

The water supply channel 5 is connected to an external water source such as a faucet to supply water to the outer tub 2 and / or the inner tub 3. The water supply valve (6) interrupts the water supply flow path (5). The driving unit 13 drives the inner tank 3 and / or the pulsator 4. The drainage flow path 9 drains the washing water in the outer tub 2. The drain valve (8) interrupts the drainage passage (9). The drain pump 17 pumps the wash water drained into the drainage flow path 9 to the outside of the washing machine.

FIG. 2 is a top view of the washing machine of FIG. 1, and schematically shows a cabinet, a bathtub, and a support rod in particular. Figure 3 is a side view of the outer tank of Figure 2;

Before describing specific embodiments of the present invention, terms are defined with reference to FIGS.

C1, C2, C3, and C4 denote the four corners of the cabinet 12. At each corner, one end of the support rod 15 is connected so as to pivot. These points are hereinafter referred to as a corner (C), and four corners are denoted by C1, C2, C3 and C4, respectively.

NC1, NC2, NC3 and NC4 are arbitrary circumferential points taken at the outer tub 2 and are points arranged at substantially equal intervals along the circumference. These points are hereinafter referred to as a corner opposing point Nc and four corner opposing points are denoted by NC1, NC2, NC3 and NC4, respectively.

2 shows the positions of the points on the horizontal plane viewed from the upper side of the outer tank 2. Even if the circumference taken in the outer tank 2 is changed, the positions of the respective points are indicated by the same point in FIG. 2, The positions of the points have a height in the up-and-down direction, and therefore it is necessary to indicate on what circumference the points are arranged. To this end, the names of the points include a "U" or "L" to indicate the circumference, which is also used to denote the relative heights of the configurations.

3, NC1, NC2, NC3 and NC4 are (NC1, U), (NC2, U), and (NC2) on the circumferential U, respectively, when two different circumferences U, (NC3, U) and (NC4, U), hereinafter referred to as upper corner intersection point Nc, U. Similarly, the points on the circumference L can be represented by (NC1, L), (NC2, L), (NC3, L) and (NC4, L) . Here, 'upper' or 'lower' is defined as a relative positional relationship between points, but is not limited to a specific position.

In FIG. 2, M denotes an intermediate position in the vertical direction of the outer tub 2, and preferably, the circumference U is taken from above the position M, It may be taken from the lower side, but is not limited thereto.

Since the outer tank 2 is suspended by the four support rods 15 connected to the lower corner opposing points, no additional external force is applied to the outer tank 2, In the natural state, the support rod 15 is positioned in a neutral position without being shifted laterally with respect to the corner opposing point. That is, on the horizontal plane, the tangent to the circumference at each corner opposing point NC1, NC2, NC3, NC4 is substantially perpendicular to the support rod 15. 2 shows that the tangent line T to the circumference at the corner opposing point NC1 and the support rod 15 connecting the corner opposing point NC1 and the corner C1 are perpendicular to each other on the horizontal plane, The same is true for the support rods 15 provided at the other corners C2, C3, and C4.

NL1, NL2, NL3 and NL4 are defined as points closest to the side surfaces L1, L2, L3 and L4 on the circumference of the outer tank 2, respectively, and L1, L2, L3 and L4 denote the sides of the cabinet 12, do. These points are hereinafter referred to as a side proximity point (N _L ), and four side adjacent points are referred to as NL 1, NL 2, NL 3, and NL 4, respectively.

One end of the horizontal vibration damping device is connected to the outer tank 2, but the other end is connected to a predetermined support disposed outside the outer tank 2 in accordance with the embodiment. The horizontal vibration damping device can be connected to the support, and in particular, the outer tank 2 has a displacement with respect to the support upon vibration. Examples of the support include a casing 10 and a support rod 15.

Hereinafter, a portion where the horizontal vibration damping device is connected to the outer tank 2 is referred to as an outer tank connection portion, and a portion connected to the support is referred to as a support connection portion. The support connection portion may be divided into a support rod connection portion and a casing connection portion. The support rod connection portion is defined as a portion where the horizontal vibration damping device is connected to the support rod 15, (10).

(See Fig. 4 (b)) of the piston relative to the displacement-cylinder of the damper constituting the horizontal vibration damping device when displacement of the outer tub 2 due to vibration occurs, The distance between the outer tubular connecting portion and the casing connecting portion can be changed according to the deformation length of the spring (see FIG. 4 (c)) or the spring's deformation length (see FIG. Since the outer tub connection part is also moved together with the outer tub 2 at this time, the interference between the outer tub connection part and the outer tub 2 or the interference between the casing connection part and the casing 10 It is preferable that the outer tubular connecting portion is rotatably coupled to the outer tub 2 and the casing connecting portion is also rotatably coupled to the casing 10. [ In the following embodiments, the outer tubular connecting portion is rotatably coupled to the outer tub 2, and the casing connecting portion is also rotatably coupled to the casing 10, unless otherwise specified.

Figure 4 is a free-body diagram in a spring-damper-mass system.

In general, the behavior of a mechanical system can be predicted through the analysis of a spring-damper-mass system as a simplified mathematical model, ie a spring-damper-mass system. The spring means the rigidity of the system, the damper the reaction against the motion such as friction or damping, and the mass means resistance or inertia to acceleration.

The 'shock absorber' referred to hereinafter includes at least one of a damper and a spring to buffer the vibration of the outer tub 2.

A spring can be defined as a mechanical element that can absorb or store energy using elasticity that returns to its original state when it is deformed by applying force.

Referring to FIG. 4A, the stiffness of a spring is expressed by a relationship between a force F extending and contracting the spring and a deformed length x, If it is proportional to force, it can be expressed as follows.

k is a spring constant. The larger the k value, the greater the force required to expand and contract the spring, and the greater the stiffness. In terms of energy, the spring releases energy when the deformation is made and releases it when it is restored back to its original position.

A damper is a device that absorbs vibration energy, and is defined as a mechanical element that alleviates vibrations or shocks, particularly by dissipating energy. The spring continues to vibrate by repetition of the shape deformation and restoration process, while the damper dissipates energy through aggressive friction action

The damper generates a damping force (or resistance force) in the opposite direction to the displacement of the object generated in response to the vibration. These damping forces include the drag force acting on the fluid when moving the object in the fluid, and the friction force acting when moving the object under friction.

4 (b) schematically shows a damper using a drag force acting from a fluid. When the piston moves in a fluid-filled cylinder, fluid flows out through a narrow gap and resistance Occurs. The resistance at this time is mainly due to the viscosity of the fluid, and the resistive force F is proportional to the velocity v.

Where c is the viscous damping coefficient, and the larger the value of c, the greater the resistance.

4 (c) schematically shows a damper using a frictional force. When a relative motion occurs between the piston and the cylinder due to the vibration of the object, the frictional force acting between the cylinder and the piston causes a resistance Lt; / RTI > The resistance force at this time is mainly kinetic friction force, and the resistance force F is proportional to the drag force (N) acting on the contact surface from the friction member.

Where μ _k is the kinetic friction constant.

All of the dampers (see FIG. 4B) using a drag acting from the fluid and the dampers using a frictional force (see FIG. 4C) are both constant (the viscous damping constant c or the kinetic friction constant μ _k ) And the damping force is proportional to the damping force. Hereinafter, the viscous damping constant or the dynamic friction constant is defined as a damping constant.

Fig. 4 (d) schematically shows the behavior of the mass. The larger the mass, the greater the force required to generate the specific acceleration. Applying Newton's second law, the relationship between force F and acceleration a is F = ma, where the proportionality constant between force and acceleration is mass m.

The force finally acting on the mass m is obtained by excluding the damping force F _d by the damper and the elastic force F _s of the spring in the external force F. [ That is, if the mass m is regarded as corresponding to the outer tub 2, it can be understood that the force for vibrating the outer tub 2 is the amount excluding the damping force of the damper constituting the horizontal vibration damping device and the elastic force of the spring.

Energy in the system is needed to deform the spring, accelerate the mass, and act on the damper. In the case of mass and spring, energy can be recovered again, but the energy in the damper is consumed and eliminated.

The spring releases energy when deformation is made and releases energy when restored back to its original position. At this time, the spring is deformed by displacement x and energy (E _s ) stored is 1/2 kx ^ 2. And, since F = kx, the energy in the spring can be expressed as follows.

When an object moves at velocity v, energy is stored in the form of kinetic energy (E _k ). This energy is released when the mass stops.

The dampers dissipate in the form of heat or noise without storing energy. The damper does not return to its original position when the applied external force is removed. In the case of a damper that performs a damping function by the viscosity of a fluid, the power P _v lost by the velocity v can be expressed as:

In the case of a damper that dissipates vibration energy in the form of frictional energy, the frictional energy E _f can be expressed as:

Although not shown in the drawings in the embodiments described with reference to Figs. 5 to 22, unless otherwise specified, the support rod 15 is connected to the outer tub 2 by the upper and lower vibration dampers 30 .

The above-mentioned spring-damper-mass system can be applied to the vibration of the outer tub 2. Support rods (15) damping force of the force damper constituting the horizontal vibration buffering device for buffering the vibration of the mass (m) of the constituent suspended in a casing 10 by means of the (F _d) and / or the elastic force of the spring (F _s) / RTI >

FIG. 5 shows the construction of a horizontal vibration damping device in a washing machine according to a first embodiment of the present invention. 5, each of the corners C and the lower portion L of the outer tub 2 are connected to each other by a support rod 15, and the horizontal vibration damping device 100 is connected to the corner C and the upper portion U of the outer tub 2 are connected. At this time, in the outer tank 2, the supporting rod 15 is connected to the lower corner opposing points Nc, L on the circumference L, and the upper corner opposing points Nc, U on the circumference U are horizontally oscillated The shock absorber 100 may be connected.

In this embodiment, the horizontal vibration damping devices 100 are provided at positions symmetrical with respect to the center of the outer tank 2, that is, diagonally. The horizontal vibration damping device 100 includes two 100 (1), 100 (3), 100 (2), and 100 (4) ), 100 (4).

When one horizontal vibration damping device 100 (1) is provided with two horizontal vibration damping devices (for example, 100 (1) and 100 (3)), NC1 and U and the other one 100 (3) can connect the corner C3 and the upper corner intersection point NC3, U.

At this time, any one of the two horizontal vibration dampers 100 (1) and 100 (3) arranged diagonally to each other includes a damper, and the other one 100 (3) . In this case, since the damper and the spring are arranged diagonally to each other, when displacement of the damper occurs in one direction during vibration of the outer tank 2, elastic energy is accumulated in the spring, and such elastic energy returns the damper to its original position Is used.

The diagonal arrangement of the spring and the damper may be applied to a case where four horizontal vibration damping devices are provided (100 (1), 100 (2), 100 (3), 100 (4) One of the two horizontal vibration damping devices may include a spring, and the other may include a damper.

Meanwhile, according to the embodiment, the horizontal vibration damping devices that provide the damping force according to the vibration of the outer tank 2 may be arranged diagonally with each other.

For example, when two horizontal vibration damping devices are provided diagonally with respect to each other, each horizontal vibration damping device comprises a support (not shown) connected to a support (casing (2) or support rod (15) Providing a damping force according to the displacement of the outer tubular connection to the connection.

Each horizontal vibration damping device preferably provides the same damping force when the displacements are the same. Each of the horizontal vibration dampers may include a damper that provides damping force in response to displacement of the outer tubular connection to the support connection, and each damper may have the same damping constant. Here, the fact that the horizontal vibration damping device includes the damper does not necessarily mean that it should necessarily include only the damper. The horizontal vibration damping device may include a spring as well as a damper. However, even in this case, since the dampers provided in each of the pair of horizontal vibration damping devices have the same damping constant, If the displacements are the same, a damping force of the same magnitude can be provided.

In a case where four horizontal vibration damping devices are provided (100 (1), 100 (2), 100 (3), and 100 (4)), all of the horizontal vibration damping devices can provide a damping force. All of the four horizontal vibration damping devices 100 (1), 100 (2), 100 (3), and 100 (4) may include a damper.

Preferably, the pair of horizontal vibration dampers arranged diagonally with each other among the four horizontal vibration dampers include a damper having the same damping constant, so that when the displacement of the outer dummy joint portion with respect to the support connecting portion is the same The same damping force can be provided.

Table 1 below summarizes the configurations of the four horizontal vibration damping devices. D means damper and S means spring. D + S, D + S1 (or S2) means that one horizontal vibration damping device includes both a damper and a spring, and the damper and the spring may be connected in series or in parallel. Then, the springs S1 and S2 have different spring constant values (k1? K2).

division Configuration 1 Configuration 2 Configuration 3 Configuration 4 Configuration 5 Configuration 6 Configuration 7 The horizontal vibration dampers 100 (1), 200 (1), 100a (1), 200a (1), or 300 (1) D D D + S D D + S D + S1 D The horizontal vibration dampers 100 (2), 200 (2), 100b (1), 200b (1), or 300 (2) D S D D D + S D + S2 D The horizontal vibration dampers 100 (3), 200 (3), 100a (3), 200a (3), or 300 (3) S D D + S D + S D + S D + S1 D The horizontal vibration dampers 100 (4), 200 (4), 100b (3), 200b (3), or 300 (4) S S D D + S D + S D + S2 D

On the other hand, the horizontal vibration damping device 100 has an outer tubular connecting portion and a casing connecting portion. The outer tubular connection part is connected to the upper part U of the outer tub 2, and in particular, can be connected to the upper corner opposing point. 5, J (NC1, U), J (NC2, U), J (NC3, U) and J (NC4, U) correspond to the horizontal vibration dampers 100 (1), 100 3) and 100 (4), respectively.

The casing connecting portion can be connected to the corner (C) of the casing (10). 100 (1), 100 (2), 100 (3), and 100 (4) in the horizontal vibration dampers 100 (1), 100 And the casing connecting portion of FIG.

FIG. 6 illustrates the construction of a horizontal vibration damping device in a washing machine according to a second embodiment of the present invention.

The arrangement of the plurality of horizontal vibration damping devices and the arrangement of the horizontal vibration damping devices according to the present embodiment can be equally applied to the embodiments described with reference to Figs. 1 to 5. However, The device 200 differs in that it has a support rod connection J (R). 200 (1), 200 (2), 200 (3), 200 (4)), J (R1) Each support rod connection (J (Rn), n = 1, 2, 3, 4).

The support rod connection portion J (R) is provided movably along the support rod 15. [ For example, one of the piston and the cylinder constituting the damper is connected to the outer tank 2, the other is connected to the support rod 15, and the support rod connection portion J (Rn) can be moved along the support rod 15.

In addition, the horizontal vibration damping device 200 is rotatable with respect to the support rod connecting portion J (Rn). In this case, the support rod connecting portion J (Rn) has at least two degrees of freedom since it moves and rotates (see Fig. 6 (b)).

The springs or dampers constituting the horizontal vibration dampers 200 (1), 200 (2), 200 (3), and 200 (4) can be combined as shown in Table 1.

FIG. 7 illustrates the construction of a horizontal vibration damping device in a washing machine according to a third embodiment of the present invention.

The washing machine according to the present embodiment is connected to any circumferential points taken from the outer tank 2 of the horizontal vibration damping device 100 and the horizontal vibration damping device 100 is connected to the tangent line T And the angle? Formed is an acute angle.

A plurality of horizontal vibration dampers may be provided in at least one pair of horizontal vibration dampers 100 (1), 100 (3), 100 (2), and 100 (3) , 100 (4).

It is preferable that the outer tubular connection portions of the horizontal vibration dampers 100 (1) and 100 (3) 100 (2) and 100 (4) are connected to the upper portion U of the outer tub 2. In FIG. 7, each of the horizontal vibration dampers 100 (1), 100 (2), 100 (3), and 100 (4) includes an outer yaw connection J (NL1, U), J , U), or gateu the J (NL3, U), J (NL4, U)), must be limited to not, be associated with an arbitrary point between the corner opposite point (N _C) with the side-up point (NL) .

The combinations of the dampers D and the springs S constituting the horizontal vibration dampers 100 (1), 100 (2), 100 (3) and 100 (4) A detailed description thereof will be omitted.

The horizontal vibration dampers 100 (1), 100 (2), 100 (3), and 100 (4) are arranged symmetrically with respect to the center of the outer tank 2. The horizontal vibration damping device 100 (1) and the horizontal vibration damping device 100 (3) are symmetrical to each other and the horizontal vibration damping device 100 (2) and the horizontal vibration damping device 100 (4) .

FIG. 8 shows the construction of a horizontal vibration damping device in a washing machine according to a fourth embodiment of the present invention.

The horizontal vibration dampers 200 (1), 200 (2), 200 (2) and 200 (2) may be arranged in the same manner as the horizontal vibration dampers 200 ), 200 (3), and 200 (4) have support rod connection portions J (R1), J (R2), J (R3), J (R4).

The support rod connection portions J (R1), J (R2), J (R3) and J (R4) are provided movably along the support rod 15. For example, one of the piston and the cylinder constituting the damper is connected to the outer tank 2, the other is connected to the support rod 15, and the support rod connection portion J (R1), J (R2), J (R3), J (R4) can be moved along the support rod 15.

In addition, the horizontal vibration dampers 200 (1), 200 (2), 200 (3), and 200 (4) (R4). In this case, the support rod connection portions J (R1), J (R2), J (R3) and J (R4) have at least two degrees of freedom since they move and rotate.

The horizontal vibration dampers 200 (1), 200 (2), 200 (3), and 200 (4) are disposed symmetrically with respect to the center of the outer tank 2. The horizontal vibration damping device 200 (1) and the horizontal vibration damping device 200 (3) are symmetrical to each other and the horizontal vibration damping device 200 (2) and the horizontal vibration damping device 200 (4) .

The spring S or the damper D constituting the horizontal vibration dampers 200 (1), 200 (2), 200 (3), and 200 (4) can be combined as shown in Table 1.

FIG. 9 shows the construction of a horizontal vibration damping device in a washing machine according to a fifth embodiment of the present invention.

The washing machine according to the present embodiment is the same as that of the third embodiment in that the horizontal vibration damping apparatus 100 is connected to the outer tank 2 at an acute angle. However, at least two horizontal vibration dampers 100a (1), 100b (2) are connected to one corner C1, and at the corner C3 arranged diagonally to the corner, at least two horizontal vibration dampers One of the two or more horizontal vibration damping devices 100a (1) connected to one corner C1 is connected to the apparatus 100a (3), 100b (3) (1) which forms an acute angle (indicated by "-a" in FIG. 9) opposite to the acute angle (indicated by "+ a" in FIG. 9) .

The springs S or dampers constituting the horizontal vibration dampers 100a (1), 100b (1), 100a (3) and 100b (3) can be combined as shown in Table 1.

FIG. 10 shows the construction of a horizontal vibration damping device in a washing machine according to a sixth embodiment of the present invention.

The horizontal vibration dampers 200a (1), 200b (1), 200a (3), 200b (200b), and 200b 200b (3) have support rod connection portions J (R1), J (R3).

The support rod connection portions J (R1) and J (R3) are provided movably along the support rod 15. For example, one of the piston and the cylinder constituting the damper is connected to the outer tub 2, the other is connected to the support rod 15, and the support rod connection portion J (corresponding to the change in distance between the piston and the cylinder) (R1, J (R3)) can be moved along the support rod 15.

In addition, the horizontal vibration dampers 200a (1), 200b (a), 200a (3), and 200b (3) are rotatable about the support rod connecting portions J (R1) and J Do. In this case, the support rod connection portions J (R1) and J (R3) have at least two degrees of freedom since they move and rotate.

The support rod connecting portions of the horizontal vibration dampers 200a (1), 200b (1), 200a (3), and 200b (3) may be provided independently of each other, The connected horizontal vibration dampers 200a (1), 200b (1) may have a common support rod connection J (R1).

The horizontal vibration dampers 100a (1), 100b (1), 100a (3), and 100b (3) are disposed symmetrically with respect to the center of the outer tank 2. The horizontal vibration damping apparatus 100a (1) and the horizontal vibration damping apparatus 100a (3) are symmetrical to each other and the horizontal vibration damping apparatus 100b (1) and the horizontal vibration damping apparatus 100b .

The spring S or the damper D constituting the horizontal vibration dampers 200a (1), 200b (1), 200a (3), and 200b (3) can be combined as shown in Table 1.

11 is a view illustrating the construction of a horizontal vibration damping device in a washing machine according to a seventh embodiment of the present invention.

In the washing machine according to the present embodiment, the horizontal vibration damping device 300 connects between the outer tank 2 and the side surface L of the cabinet. 300 (2), 300 (3), 300 (4), 300 (3), and 300 (4) so as to connect the respective sides L1, L2, L3, L4 of the cabinet 12 to the outer tank 2. [ ) May be provided. The plurality of horizontal vibration dampers are preferably arranged symmetrically with respect to the center of the outer tank 2. [

The horizontal vibration dampers 300 (1), 300 (2), 300 (3) and 300 (4) have an outer tubular connection portion and a casing connection portion. The outer tubular connection portion is preferably connected to the upper portion U of the outer tub 2 it is, each of the horizontal vibration absorbing device (300 1, 300 2, 300 3, 300 4) is the upper side close-up point (N _L, U) and connected to the outer tank connection (J (NL1, U ), J (NL2, U), J (NL3, U), J (NL4, U)

It is preferable that the casing connecting portions J (L1), J (L2), J (L3) and J (L4) are connected to the upper portions of the side surfaces L1, L2, L3 and L4 of the cabinet 12.

The spring S or the damper D constituting the horizontal vibration dampers 300 (1), 300 (2), 300 (3), and 300 (4) can be combined as shown in Table 1.

Hereinafter, the horizontal vibration dampers constituting the washing machine will be described with reference to FIGS. 12 to 24, which are merely representative of the features of the embodiments. Instead, the notations that denote the configurations are those given a variable n, where n can be 1, 2, 3, or 4, and the configuration distinguished by each number is as shown in FIG. For example, N _Cn in FIG. 12 may be defined as any one of N _C1 to N _C4 in FIG. 2 according to the number given.

The embodiments described with reference to Figs. 12 to 13 are the first horizontal vibration damping apparatuses 100 (U) and 300 (U) each having one end (outer ditch connecting portion) connected to the upper portion of the outer tank 2 The other end of the first horizontal vibration damping device is connected to the upper portion of the support rod 15 or the upper portion of the casing 10 and the second horizontal vibration damping device 200 (L) And the other end of the second horizontal vibration damping device is connected to the lower portion of the support rod 15 or the lower portion of the casing 10.

12 illustrates the construction of a horizontal vibration damping device in a washing machine according to an eighth embodiment of the present invention.

The first horizontal vibration damping device 200 (U) has a support rod connection part J (R, U) which is moved in the upper section of the support rod 15, and the second horizontal vibration damping device 200 (L) (J (R, L)) which is moved in the lower section relative to the first horizontal vibration damping device 200 (U).

The outer tubular connection portion of the first horizontal vibration damping device 200 (U) and the second horizontal vibration damping device 200 (L) is connected to the upper portion of the outer tub 2. 12, the first horizontal vibration damping device 200 (U) and the second horizontal vibration damping device 200 (L) have a common outer tubular connecting portion J _Cn , L connected to the upper portion U of the outer tank 2 But it is also possible to have the outer tubular connecting portions independently of each other.

The outer tubular connection portion J _Cn and L is a fixed connection portion allowing rotation of each of the horizontal vibration dampers 200 (U) and 200 (L) but not permitting displacement, The rod connection portions J (R, U), J (R, L) may be fixed connections or rotations as well as movable links that can move along support rods 15.

The support rod connection portions J (R, U), J (R, L) have a vertical arrangement relationship in the relation of the fixed connection portion or the movable connection portion. In the case where each of the support rod connection portions J (R, U), J (R, L) forms a fixed connection portion with respect to the support rod 15, The support rod connection portions J (R, U) of the first horizontal vibration damping device 200 (U) are connected to the support rod connection portions J (R) of the second horizontal vibration damping device 200 , L)) is allowed to move in the upper section.

Each of the horizontal vibration dampers 200 (U) and 200 (L) may include at least one of a spring and a damper.

According to the embodiment, the first horizontal vibration damping device 200 (U) and the second horizontal vibration damping device 200 (L) may each include a damper. In this case, the attenuation constant of the first horizontal vibration damping device 200 (U) is set to be larger than that of the second horizontal vibration damping device 200 (U) so that a larger damping force can be generated by the first horizontal vibration damping device 200 L)).

According to another embodiment, the first horizontal vibration damping device 200 (U) includes a damper, and the second horizontal vibration damping device 200 (L) includes a spring. In this case, the vibration is attenuated by the first horizontal vibration damping device 200 (U), and the spring of the second horizontal vibration damping device 200 (L) provides an elastic force for returning the damper to its original state.

According to another embodiment of the present invention, a damper and a spring are provided in each of the first horizontal vibration damping device 200 (U) and the second horizontal vibration damping device 200 (L) U of the first horizontal vibration damping device 200 (U) exerts a larger damping force than the second horizontal vibration damping device 200 (L), and the second horizontal vibration damping device 200 (L) It is possible to have a larger rigidity than that of the first embodiment. That is, the attenuation constant and the spring constant of the first horizontal vibration damping device 200 (U) are c1 and k1, respectively, and the damping constant and the spring constant of the second horizontal vibration damping device 200 (L) k2, the following relation holds.

c1 > c2, k1 < k2

FIG. 13 illustrates the construction of a horizontal vibration damping device in a washing machine according to a ninth embodiment of the present invention.

The washing machine according to the present embodiment differs from the eighth embodiment described above in that the first horizontal vibration damping device 300 (U) and the second horizontal vibration damping device 300 (L) And the other configurations are the same.

Each casing connection portion is a fixed connection portion that is rotationally coupled with a side surface L _n of the cabinet 12. The casing connection portion J (L _n , U) of the first horizontal vibration damping device 300 (U) is connected to the upper portion L _n , U from the side of the cabinet 12 and the second horizontal vibration damping device The casing connecting portion J (L _n , L) of the cabinet 12 may be connected to the lower portion L _n , L of the cabinet 12. However, the present invention is not limited to this, and the casing connecting portion J (L _n , U) of the first horizontal vibration damping device 300 (U) and the casing connecting portion J (L _n , U) of the second horizontal vibration damping device 300 L _n , L), the position on the casing 10 to which the respective casing connecting portions are connected is not limited, as long as the relative arrangement in the up-and-down direction can be specified.

The combination of the damper and the spring constituting the first horizontal vibration damping device 300 (U) and the second horizontal vibration damping device 300 (L) and the relationship between them is the same as the description of the eighth embodiment And a detailed description thereof will be omitted.

The laundry processing apparatus according to the present embodiment is configured such that the support rod connection portions J (R, U), J (R, L) of the respective horizontal vibration dampers 200 (U), 200 The vibration or shock transmitted from the outer tub 2 can be dispersed more effectively and more particularly the vibration damping performance against the vibration generated at the upper portion of the outer tub 2 is exhibited.

(U), 300 (L)) of the first horizontal vibration dampers 200 (U), 300 (U) and the second horizontal vibration dampers 200 The combinations are summarized in Table 2 below.

division Outer tubular connection portion (common to the eighth and ninth embodiments) Support rod connection part (eighth embodiment) Cabinet connecting part (ninth embodiment) The first horizontal vibration dampers 200 (U), 300 (U) Top Top Top The second horizontal vibration dampers 200 (L), 300 (L) Top bottom bottom

Hereinafter, the embodiments described with reference to Figs. 14 to 15 will be described with reference to a first horizontal vibration damping device 200 (U) in which one end (outer dock connecting portion) is connected to the lower portion of the outer tank 2, The other end of the first horizontal vibration damping device 200 (U) is connected to the upper part of the support rod 15 or the upper part of the casing 10, and the second horizontal vibration damping device 200 (L) is connected to the lower portion of the support rod 15 or the lower portion of the casing 10.

FIG. 14 shows the construction of a horizontal vibration damping device in a washing machine according to a tenth embodiment of the present invention.

The washing machine according to the present embodiment is characterized in that the first horizontal vibration damping device 200 (U) and the second horizontal vibration damping device 200 (L) are connected to the lower portion of the outer tank 2, 8, and the other configurations are substantially the same, so that the same configuration will be described in the foregoing description, and a detailed description thereof will be omitted.

On the other hand, the first horizontal vibration absorbing device (200 (U)) and a second outer tank connection of the horizontal vibration absorbing device (200 (L)) (J (N Cn, L ') has upper and lower vibration absorbing device (30, see Fig. 1 (Hereinafter, referred to as a support rod-outer tubular connection portion) where the support rod 15 is connected to the outer tub 2 by the connecting rod (not shown).

The laundry processing apparatus according to the present embodiment is configured such that the support rod connection portions J (R, U), J (R, L) of the respective horizontal vibration dampers 200 (U), 200 The vibration or shock transmitted from the outer tub 2 can be dispersed more effectively, and more particularly, the damping performance against the vibration generated in the lower portion of the outer tub 2 is exhibited.

FIG. 15 shows the construction of a horizontal vibration damping device in a washing machine according to an eleventh embodiment of the present invention.

Washing machine according to the present embodiment includes a first horizontal vibration absorbing device (300 (U)) and a second horizontal vibration absorbing device (300 (L)) has, J (L _n each casing connection _{(L n, U (J)} , L), which is different from the eighth embodiment described above, and the other configurations are the same.

Since the outer tub 2 is suspended in the casing 10 by the support rod 15, the pivoting operation is performed with reference to the casing connecting portion J (Cn) of the support rod 15. In this embodiment, since the outer tank 2 is connected to the casing 10 by the first horizontal vibration damping device 300 (U) and the second horizontal vibration damping device 300 (L) The damping force provided by the devices 300 (U) and 300 (L) not only acts directly on the outer tub 2 but also the pivoting action in the casing connection J (Cn) is also more restrictive, .

(U) and 300 (L)) of the first horizontal vibration damping device 200 (U) and the second horizontal vibration damping device 200 (L) 300 (L) described above with reference to Figs. 14 to 15 The combinations are summarized in Table 3 below.

division The outer tubular connection portion (common to the tenth and eleventh embodiments) The support rod connecting portion (tenth embodiment) Cabinet connecting part (eleventh embodiment) The first horizontal vibration dampers 200 (U), 300 (U) bottom Top Top The second horizontal vibration dampers 200 (L), 300 (L) bottom bottom bottom

16 shows the construction of a horizontal vibration damping device in a washing machine according to a twelfth embodiment of the present invention.

The washing machine according to the present embodiment includes a vertical vibration damping device 30 'for connecting the upper part of the outer tank 2 and the upper part of the casing 10, a lower part L of the outer tank 2 and a lower part of the casing 10 And a horizontal vibration damping device (400) for connecting the horizontal vibration damping device (400).

The upper and lower vibration dampening device 30 'extends substantially in the vertical direction, and mainly vibrates the vibration of the outer tank 2 in the vertical direction. The upper and lower vibration damping device 30 'may include at least one of a spring and a damper. The upper and lower vibration damping device 30 'can be realized by actually moving the position at which the support rod 15 is connected to the outer tank 2 in the upward direction. The upper and lower vibration damping device 30 'may include a casing connection J (U) which is pivotally connected to the top cover 7. [

The horizontal vibration damping device 400 connects the lower portion of the outer tank 2 and the lower portion of the casing 10. The horizontal vibration damping device 400 includes an outer tubular connection J (L) connected to the side of the outer tub 2 and a casing connection J (B) connected to the base 19 of the casing 10 And the casing connecting portion J (B) can be rotationally coupled with the casing 10. The casing connecting portion J (L)

Particularly, since the washing machine according to the present embodiment is suspended in the casing 10 by the upper and lower vibration damping device 30 ', the center of gravity of the outer tank 2 is connected to the outer tank 2 to which the upper and lower vibration damping device 30' Lt; / RTI &gt; Therefore, a larger horizontal vibration is generated in the lower part of the outer tank 2, and a horizontal vibration damping device 400 for buffering the same is connected to the lower part of the outer tank 2.

The horizontal vibration damping device 400 may include at least one of a spring and a damper, and the direction in which the displacement of the spring or the damper is performed has a predetermined angle (?) With respect to the vertical direction. Here, the angle? Is an acute angle.

FIG. 17 illustrates the construction of a horizontal vibration damping device in a washing machine according to a thirteenth embodiment of the present invention.

The washing machine according to the present embodiment includes a horizontal vibration damping device 500 for connecting the upper part of the outer tank 2 and the upper part of the casing 10 and a connecting part for connecting the bottom of the outer tank 2 and the base 19 of the casing 10 And an upper and lower vibration damping device 30 "

The upper and lower vibration damping device 30 "extends substantially in the vertical direction to mainly buffer the up-and-down vibration of the outer case 2. The upper and lower vibration damping device 30" may include at least one of a spring and a damper .

The horizontal vibration damping device 500 connects the upper portion of the outer tank 2 and the upper portion of the casing 10. The horizontal vibration damping device 500 may include an outer tubular connection J (N _Cn , U) connected to the upper portion of the outer tub 2 and a casing connection J (U) connected to the upper portion of the casing 10 And the casing connecting portion J (L) can be rotatably connected to the outer tank 2 and the casing connecting portion J (U) can be pivotally supported with respect to the pivot supporting portion 16. [

The horizontal vibration damping device 500 may include at least one of a spring and a damper, and a direction in which the displacement of the spring or the damper is performed has a predetermined angle? With respect to the vertical direction. Here, the angle? Is an acute angle.

18 shows the construction of a horizontal vibration damping device in a washing machine according to a fourteenth embodiment of the present invention.

The washing machine according to the present embodiment includes a horizontal vibration damping device 400 that connects the upper portion of the outer tank 2 and the bottom of the casing 10. The outer tubular connecting portion J (U) of the horizontal vibration damping device 400 is located above the supporting rod-outer tubular connecting portion J (N _Cn , L).

The horizontal vibration damping device 400 may include at least one of a damper and a spring, and the direction in which the displacement of the spring or the damper is performed has a predetermined angle? With respect to the vertical direction. Here, the angle? Is an acute angle.

The horizontal vibration damping device 400 according to the present embodiment is capable of attenuating the horizontal vibration at the upper portion of the outer tank 2 and also preventing the vertical vibration of the outer tank 2 And provides a damping force together with the upper and lower vibration damping device 30 (see Fig. 1). In particular, when the horizontal vibration damping device 400 includes a spring, since the expansion and contraction of the spring is made opposite to the spring 32 of the vertical vibration damping device 30, the damping action can be performed more stably. For example, when the outer tub 2 is displaced downward due to vibration, the length of the horizontal vibration dampers 400 is reduced, but the spring 32 of the upper and lower vibration dampers 30 is extended, The stability and rigidity of both the up and down vibration directions of the outer tub 2 can be ensured.

19 shows the construction of a horizontal vibration damping device in a washing machine according to a fifteenth embodiment of the present invention.

The washing machine according to the present embodiment includes an upper horizontal vibration damping device 200 (U) and a lower horizontal vibration damping device 200 (L) that buffer horizontal vibration at the upper and lower portions of the outer tank 2, respectively.

Each of the horizontal vibration dampers 200 (U) and 200 (L) has an outer tubular connecting portion and a supporting rod connecting portion.

The outer tubular connection J (N _Cn , U) of the upper horizontal vibration damping device 200 (U) may be connected to the upper corner opposing point N _Cn , U of the outer tub 2. The horizontal vibration at the upper portion of the outer tank 2 is mainly reduced by the upper horizontal vibration damping device 200 (U).

The outer tubular connection portion J (N _Cn , L) of the lower horizontal vibration damping device 200 (L) can be connected to the lower corner opposing point N _Cn , L of the outer tub 2. The horizontal vibration at the upper portion of the outer tub 2 is mainly reduced by the lower horizontal vibration damping device 200 (L).

The support rod connection portions J (R, U) of the upper horizontal vibration damping device 200 (U) are formed to be relatively larger than the support rod connection portions J (R, L) of the lower horizontal vibration damping device 200 And is connected to the support rod 15 on the upper side. Each of the support rod connection portions J (R, U), J (R, L) may be connected on the support rod 15 so that the position thereof is fixed, And is preferably movable along the support rod 15, and may be rotatably connected with respect to a horizontal axis. In this case, the support rod connection portions J (R, U) of the upper horizontal vibration damping device 200 (U) are connected to the support rod connection portions J (R, L) of the lower horizontal vibration damping device 200 ) Relative to the upper region.

Each of the horizontal vibration dampers 200 (U) and 200 (L) may include at least one of a spring and a damper.

According to the embodiment, the upper horizontal vibration damping device 200 (U) and the lower horizontal vibration damping device 200 (L) may each include a damper. In this case, the damping coefficient of the upper horizontal vibration damping device 200 (U) is lower than that of the lower horizontal vibration damping device 200 (L) so that a larger damping force can be generated by the upper horizontal vibration damping device 200 Is preferably larger than the attenuation constant of &lt; RTI ID = 0.0 &gt;

According to another embodiment, the upper horizontal vibration damping device 200 (U) includes a damper, and the lower horizontal vibration damping device 200 (L) may include a spring. In this case, the vibration is attenuated by the upper horizontal vibration damping device 200 (U), and the spring of the lower horizontal vibration damping device 200 (L) provides an elastic force for returning the damper to its original state.

The upper horizontal vibration damping device 200 (U) and the lower horizontal vibration damping device 200 (L) are each provided with a damper and a spring, The lower horizontal vibration damping device 200 (L) has a larger damping force than the lower horizontal vibration damping device 200 (L), and the lower horizontal vibration damping device 200 Respectively. That is, let the attenuation constant and the spring constant of the upper horizontal vibration damping device 200 (U) be c1 and k1, respectively, and the damping constant and the spring constant of the lower horizontal vibration damping device 200 (L) The following relation holds.

c1 > c2, k1 < k2

20 shows the construction of a horizontal vibration damping device in a washing machine according to a sixteenth embodiment of the present invention.

The washing machine according to the present embodiment includes a horizontal vibration damping device 500 connecting the support rod 15 and the casing 10. The horizontal vibration damping device 500 includes a support rod connecting portion J (R) movably connected along the support rod 15 and a casing connecting portion J (L _n , U) fixedly connected to the casing 10 .

The support rod connection J (R) is not only movable along the support rod 15, but also rotatable about a horizontal axis. The horizontal vibration damping device 500 may include at least one of a damper and a spring. In particular, when the damping device includes the damper, the horizontal vibration of the outer case 2 is attenuated by the damping force of the damper.

The casing connecting portion J (L _n , U) is displaced in the upper portion of the outer tank 2 due to the vibration when the lower portion of the outer tub 2 is connected to the support rod 15, (U) of the side surface (L _n ) of the base plate (12).

FIG. 21 illustrates a horizontal vibration damping device in a washing machine according to a seventeenth embodiment of the present invention.

The washing machine according to the present embodiment includes an upper horizontal vibration damping device 500 (U) and a lower horizontal vibration damping device 500 (L) that connect the support rod 15 and the casing 10, respectively.

The upper horizontal vibration damping device 500 (U) and the lower horizontal vibration damping device 500 (L) each have a support rod connection part and a casing connection part.

The support rod connection portions J (R, U) of the upper horizontal vibration damping device 500 (U) are formed in such a manner that relative to the support rod connection portions J (R, L) of the lower horizontal vibration damping device 500 And is connected to the support rod 15 on the upper side. Each of the support rod connection portions J (R, U), J (R, L) may be connected on the support rod 15 so that the position thereof is fixed, And is preferably movable along the support rod 15, and may be rotatably connected with respect to a horizontal axis. In this case, the support rod connection portions J (R, U) of the upper horizontal vibration damping device 500 (U) are connected to the support rod connection portions J (R, L) of the lower horizontal vibration damping device 500 )) In the upper section.

The casing connecting portion J (L _n , U) of the upper horizontal vibration damping device 200 (U) can be connected to the upper portion of the casing 10. Preferably, the casing connection J (L _n , U) is connected to the upper portion U of the side L _n of the cabinet 12.

The casing connecting portion J (L _n , L) of the lower horizontal vibration damping device 200 (L) can be connected to the lower portion of the casing 10. Preferably, the casing connection J (L _n , U) is connected to the lower portion L of the side L _n of the cabinet 12.

Each of the horizontal vibration dampers 200 (U) and 200 (L) may include at least one of a spring and a damper.

According to the embodiment, the upper horizontal vibration damping device 200 (U) and the lower horizontal vibration damping device 200 (L) may each include a damper. In this case, the damping coefficient of the upper horizontal vibration damping device 200 (U) is lower than that of the lower horizontal vibration damping device 200 (L) so that a larger damping force can be generated by the upper horizontal vibration damping device 200 Is preferably larger than the attenuation constant of &lt; RTI ID = 0.0 &gt;

According to another embodiment, the upper horizontal vibration damping device 200 (U) includes a damper, and the lower horizontal vibration damping device 200 (L) may include a spring. In this case, the vibration is attenuated by the upper horizontal vibration damping device 200 (U), and the spring of the lower horizontal vibration damping device 200 (L) provides an elastic force for returning the damper to its original state.

The upper horizontal vibration damping device 200 (U) and the lower horizontal vibration damping device 200 (L) are each provided with a damper and a spring, The lower horizontal vibration damping device 200 (L) has a larger damping force than the lower horizontal vibration damping device 200 (L), and the lower horizontal vibration damping device 200 Respectively. That is, let the attenuation constant and the spring constant of the upper horizontal vibration damping device 200 (U) be c1 and k1, respectively, and the damping constant and the spring constant of the lower horizontal vibration damping device 200 (L) The following relation holds.

c1 > c2, k1 < k2

FIG. 22 shows the construction of a horizontal vibration damping device in a washing machine according to an eighteenth embodiment of the present invention.

The washing machine according to the present embodiment includes an upper horizontal vibration damping device 500 and a lower horizontal vibration damping device 200.

One of the upper horizontal vibration damping device 500 and the lower horizontal vibration damping device 200 has the outer tubular connection J (N _Cn , L ') and the support rod connection J (R, L) Has a support rod connection portion J (R, U) and a casing connection portion J (L _n , U).

The support rod connecting portions J (R, U) of the upper horizontal vibration damping device 500 are supported at the upper side relative to the support rod connection portions J (R, U) of the lower horizontal vibration damping device 200, 15). Each of the support rod connection portions J (R, U) and J (R, L) may be connected on the support rod 15 so that only the rotation based on the horizontal axis is allowed. However, And is preferably movable along the support rod 15, and may be rotatably connected with respect to a horizontal axis. However, even in this case, the support rod connection portions J (R, U) of the upper horizontal vibration damping device 500 are relatively larger than the support rod connection portions J (R, L) of the lower horizontal vibration damping device 200 Is moved in the upper section.

Each horizontal vibration damping device 500, 200 may include at least one of a spring and a damper.

The supporting rods 15 are connected to the supporting rods 15 connected to the outer tank 2 by the upper and lower vibration dampers 30 (see Fig. 1), and the outer rods J (N _{Cn ,} L ') of the lower horizontal vibration dampers 200, - Located above the outer tubular connection J (N _Cn , L)

The casing connection portion J (Ln, U) may be connected to the upper portion of the casing 10. [ And is preferably connected from the side Ln of the cabinet 12 to the top.

Preferably, when one of the upper horizontal vibration damping device 500 and the lower horizontal vibration damping device 200 includes a damper, the other includes a spring that provides an elastic force for returning the damper to its home position . Since the damping force (or elastic force) provided by the upper horizontal vibration damping device 500 and the elastic force (or damping force) provided by the lower horizontal vibration damping device 200 are substantially parallel to each other, It can be used more effectively to reset the damper.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

Claims (10)

Casing;
An outer tub disposed in the casing; And
And a horizontal vibration damping device connecting the outer tank and the casing,
In the horizontal vibration damping device,
A casing connecting portion connected to the casing;
An outer tubular connection portion connected to a side surface of the outer tub and having a displacement with respect to the casing connecting portion according to a vibration of the outer tub; And
And a damper that provides a damping force corresponding to displacement of the outer tubular connection portion with respect to the casing connection portion,
Wherein the casing connection portion is located below the outer tubular connection portion. The method according to claim 1,
Further comprising a vertical damping device for hanging the outer tank in the casing,
Wherein the vertical damping device comprises:
A casing connecting portion connected to an upper portion of the casing;
An outer tubular connection portion connected to an upper portion of the outer tub and having a displacement with respect to the casing connecting portion in accordance with a vertical vibration of the outer tub; And
And a damper that provides a damping force corresponding to displacement of the support member connection portion with respect to the casing connection portion. 3. The method of claim 2,
The casing includes:
A cabinet having an open top;
A base for supporting the cabinet; And
And a top cover which covers an opened upper portion of the cabinet and in which a bag entrance and exit hole is formed,
Wherein the casing connecting portion of the up-and-down dampener is connected to the top cover,
Wherein the casing connecting portion of the horizontal damping device is connected to the base. The method according to claim 1,
The damper includes:
A cylinder filled with a fluid having a predetermined viscosity; And
And a piston movably disposed in the cylinder, the piston having a displacement with respect to the cylinder in accordance with the vibration of the outer tank. The method according to claim 1,
The damper includes:
cylinder; And
A piston movably disposed within the cylinder, the piston having a displacement relative to the cylinder in response to the vibration of the bath,
Wherein one of the piston and the cylinder includes a friction member that provides a frictional force with the other. The method according to claim 1,
The casing connecting portion
And connected to the bottom of the casing. The method according to claim 1,
Wherein the line connecting the casing connection portion and the outer tubular connection portion forms an acute angle with respect to a vertical line. The method according to claim 1,
Further comprising a support member for hanging the outer tank in the casing,
Wherein the support member comprises:
A lower portion connected to a lower portion of the outer tank,
The outer tubular connection part
And the upper part of the outer tub is connected to the upper part of the outer tub. 9. The method of claim 8,
And a vertical damping device connecting the support member and the outer tank,
Wherein the vertical damping device comprises a damper for providing a damping force corresponding to vertical vibration of the outer tank. 10. The method of claim 9,
The casing includes:
A cabinet having an open top; And
And a base for supporting the cabinet,
Wherein the casing connecting portion of the horizontal damping device is connected to the base.

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