KR102229974B1 - Laundry Machine - Google Patents

Abstract

The present invention relates to a laundry apparatus, comprising: a cabinet; A tub installed in the cabinet; A drum installed in the tub; A driving unit including a rotation shaft connected to the drum and a motor connected to the rotation shaft; And a suspension unit connected to the driving unit to buffer and support the driving unit and the drum, wherein the suspension unit includes a bearing housing rotatably supporting the rotation shaft, at least one spring cylinder damper arranged in a vertical direction, and obliquely It relates to a washing apparatus, characterized in that it includes one or more cylinder dampers arranged, wherein the suspension unit is detachably installed with one or more mass dampers for canceling vibrations corresponding to the movement of the suspension unit.

Description

Laundry Machine

The present invention relates to a washing apparatus, and more particularly, to a washing apparatus capable of increasing the washing capacity by improving the structure of the washing apparatus and more efficiently reducing vibrations of the washing apparatus.

In general, a laundry machine is a product that removes various contaminants attached to clothes or bedding by using the emulsification of detergent, the frictional action of water flow due to rotation of the pulsator or drum, and the impact action applied to laundry. A recently released fully automatic laundry machine automatically proceeds a series of steps leading to a washing course, a rinsing course, and a spin-drying course, without a user's operation in between.

In addition, in recent years, compared to the pulsator washing machine that rotates with the washing tub upright, there is an increasing demand for a drum-type washing machine that can not only reduce the overall height, but also solve the problem of twisting laundry and wrinkles in laundry.

Briefly explaining the structure of the drum-type washing apparatus as described above, the main body cabinet forming the outer shape, the tub that is located inside the main body cabinet and supported by a damper and a spring to store washing water, and is located inside the tub. It is largely divided into a cylindrical drum into which laundry can be put, and the drum receives a driving force by a driving unit for washing the laundry put in the drum.

The drum-type laundry apparatus having the structure as described above inevitably induces vibration due to the rotational force of the drum and the eccentricity of the laundry when the drum is rotated to wash and dewater the laundry put in the drum. The vibration generated by this is transmitted to the outside through the tub and cabinet.

At this time, in order to prevent the vibration transmitted from the drum to the tub from being transmitted to the cabinet, a spring and a damper for buffering and mitigating the vibration of the tub are essentially provided between the tub and the cabinet.

On the other hand, in the case of the above-described drum-type laundry machine, most of them are not separately installed, but are included in an existing installation environment (for example, a sink environment or a built-in environment) and installed. Therefore, the size of the drum-type washing machine should be limited according to the installation environment in which it is installed.

As described above, in the case of a drum-type washing machine, it is limited to change the internal structure by a spring and a damper structure for mitigating vibration between the tub and the cabinet. As the installation environment of the washing machine is limited, the washing machine itself It is limited to change the size of.

On the other hand, in recent years, a lot of research and development has been conducted on increasing the washing capacity of a washing machine in order to increase the amount of laundry and to facilitate the user's convenience. However, in the structure of the conventional drum-type washing apparatus due to the above-described limiting conditions, it is difficult to increase the size of the tub in order to increase the washing capacity.

Accordingly, as described above, in order to increase the washing capacity, the development of washing apparatuses having various structures is on the rise.

The present invention is to solve the above-described problems, and an object of the present invention is to provide a drum washing machine of a new structure in which the support structure for supporting the drum is completely different from the conventional support structure. Specifically, the present invention provides a drum washing machine of a new structure capable of buffering and supporting the drum without transmitting the vibration of the drum to the tub unlike the conventional one.

The present invention has been invented to solve the above problems, and an object of the present invention is to provide an improved drum washing machine capable of effectively buffering the vibration of the drum while increasing the capacity of the washing machine.

The laundry apparatus according to an embodiment of the present invention for achieving the above object includes a cabinet; A tub installed in the cabinet; A drum installed in the tub; A driving unit including a rotation shaft connected to the drum and a motor connected to the rotation shaft; And a suspension unit connected to the driving unit and having at least one elastic damper for buffering and supporting the drum with respect to the cabinet, wherein the suspension unit includes at least one for canceling vibration in response to the movement of the suspension unit. A mass damper is installed, and the mass damper includes a mass installed on the suspension unit and provided to be spaced apart from the cabinet.

In addition, a washing apparatus according to another embodiment of the present invention includes a cabinet forming the outer shape of the washing apparatus; A tub installed in the cabinet and accommodating washing water; A drum installed in the tub and accommodating laundry; A driving unit including a rotation shaft connected to the drum and a motor connected to the rotation shaft; And a suspension unit connected to the driving unit and having at least one elastic damper for buffering and supporting the drum against the base of the cabinet, wherein the suspension unit cancels vibration in response to the movement of the suspension unit. It includes one or more mass dampers, the mass dampers may be installed to be spaced apart from the base of the cabinet at a predetermined interval.

Here, the elastic damper may be a cylinder damper.

In addition, the suspension unit includes a bearing housing rotatably supporting the rotation shaft, an extension extending radially from the bearing housing to both left and right sides, a suspension arm extending from the end of the extension in the direction of the rotational axis of the drum, and a suspension arm. It may include one or more elastic dampers connected between the cabinets.

In addition, the mass damper includes a mass damper bracket for installing the mass damper in the suspension unit, and the mass may be elastically supported by the mass damper bracket.

In addition, it is preferable that the mass damper bracket includes a horizontal panel having a predetermined width and side panels extending in a vertical direction from both sides of the horizontal panel, and the mass is elastically supported between the side panels.

In addition, the horizontal panel is preferably provided with a step forming portion extending while forming a step in the horizontal direction, and when the mass damper is coupled to the suspension arm, it is preferable that the step forming portion is disposed to face the lower side of the tub.

In addition, it is preferable that a buffer member is disposed between the side panels and the outer surface of the mass to elastically support the mass with respect to the side panels.

In addition, it is preferable that a plurality of fastening holes are formed in the side panels, and a plurality of fastening holes corresponding to the fastening holes formed in the side panels are formed in the mass.

In addition, a buffer member is disposed between the side panels and the outer surface of the mass, and the mass damper bracket and the mass are formed by a fastening hole of the side panel, the buffer member, and a pin member penetrating through the fastening hole of the mass. It is preferred that is combined.

In addition, it is preferable that the suspension unit further includes an extension portion extending radially from the bearing housing to both left and right sides, and at least one suspension arm extending from an end of the extension portion in the direction of the rotational axis of the drum.

In this case, the mass damper is preferably mounted on the suspension arm.

In addition, the mass damper includes a mass damper bracket for installing the mass damper on the suspension arm and a mass installed on the mass damper bracket, and the mass is the mass damper bracket through a buffer member at the bottom of the suspension arm. It is desirable to be installed in.

In addition, it is preferable that the tub is fixedly installed in the cabinet.

In this case, it is preferable that the tub includes a tub front constituting a front portion, and a tubular constituting a rear portion and coupled to the tub front.

In addition, it is preferable that the tubular has an opening at a rear portion, a tub bag is disposed in the opening, and a rear gasket made of a flexible material is installed between the inner circumference of the opening and the outer circumference of the tub bag.

In addition, a washing apparatus according to another embodiment of the present invention includes a cabinet forming the outer shape of the washing apparatus; A tub installed in the cabinet and accommodating washing water; A drum installed in the tub and accommodating laundry; A driving unit including a rotation shaft connected to the drum and a motor connected to the rotation shaft; And a suspension unit connected to the driving unit and having at least one cylinder damper for buffering and supporting the drum against the base of the cabinet; wherein the suspension unit is one that cancels vibration in response to the movement of the suspension unit. Including the above mass damper, the mass damper may be installed to be spaced apart from the base of the cabinet at a predetermined interval.

In addition, the mass damper preferably includes a mass damper bracket for installing the mass damper on the suspension arm, and a mass elastically supported by the mass damper bracket.

In addition, the mass damper bracket includes a horizontal panel having a predetermined width and side panels extending in a vertical direction from both sides of the horizontal panel, and the mass is preferably installed between the side panels.

In addition, it is preferable that a buffer member is disposed between the side panels and the outer surface of the mass to elastically support the mass with respect to the side panels.

In this case, the buffer member is formed of rubber, and it is preferable that a plurality of the buffer members are disposed.

In addition, the mass is preferably formed of a rigid body.

According to the washing apparatus according to the present invention, the present invention provides a drum washing machine of a new structure whose supporting structure for supporting the drum is completely different from the conventional one. The vibration of the drum is not transmitted to the tub and is effectively buffered and supported by the suspension unit.

In addition, by reducing the vibration of the washing apparatus by one or more mass dampers that cancel the vibration in response to the movement of the suspension unit, it is possible to more effectively reduce the vibration noise of the washing apparatus.

1 is an exploded perspective view showing a washing apparatus according to the present invention.
2 to 3 are perspective views showing the tub front of the laundry apparatus according to the present invention.
Figure 4 is a rear perspective view showing the turret of the laundry apparatus according to the present invention.
5 is a perspective view showing a suspension unit of a washing apparatus according to the present invention.
Figure 6 is a side view showing the coupling state of the tub and the suspension of the washing apparatus according to the present invention.
7 is a perspective view showing a state in which a mass damper is coupled to a suspension unit of a washing apparatus according to the present invention.
8 is a perspective view showing a mass damper according to an embodiment of the present invention.
9 is a perspective view showing a mass damper according to another embodiment of the present invention.
10 is a perspective view showing a mass damper according to another embodiment of the present invention.

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

In describing the present invention, the names of each defined component are defined in consideration of functions in the present invention. Therefore, it should not be understood as limiting the technical elements of the present invention. In addition, each of the names defined for each component may be called a different name in the art.

1 is an exploded perspective view showing a washing apparatus according to the present invention.

Referring to FIG. 1, in the washing apparatus according to the present invention, a tub 10 is fixedly supported on a cabinet 60. The tub 10 includes a tub front 100 constituting a front portion and a turret 120 constituting a rear portion. The tub front 100 and the tubular 120 may be assembled with screws, and the tub front 100 and the tubular 120 in an assembled state form a space in which the drum 30 is accommodated. And, the tub 10 includes a tub bag 130 forming a rear surface. The tub bag 130 is connected through a silver turret 120 and a rear gasket 250. The rear gasket 250 is made of a flexible material so that the vibration of the tub bag 130 is not transmitted to the tubular 120.

The cabinet 60 forms the appearance of the washing machine. The cabinet 60 includes a cabinet front (not shown), a cabinet rear 620, a cabinet left 640, a cabinet light 630, a cabinet top (not shown), and a cabinet base 600.

A foreign material trapping prevention member 200 is connected to the front part of the tub front 100 to prevent foreign matter from flowing between the tub 10 and the drum 30 (see FIG. 1 ). The foreign body trapping prevention member 200 is made of a flexible material, and is fixedly installed on the tub front 100. The foreign body trapping prevention member 200 may be made of the same material as the rear gasket 250.

The turret 120 has a rear side 128 (see Fig. 4). The rear surface 128 of the tubular 120, the tub bag 130, and the rear gasket 250 constitute the rear wall surface of the tub 10. The rear gasket 250 is connected to the tub bag 130 and the tubular 120 so as to be sealed, respectively, so that the washing water in the tub 10 does not leak. The tubback 130 vibrates together with the drum 30 when the drum 30 rotates, and at this time, it is spaced radially inward from the tubular 120 at sufficient intervals so as not to interfere with the tubular 120 have. Since the rear gasket 250 is made of a flexible material, it allows the tub bag 130 to perform relative movement without interfering with the tubular 120. The rear gasket 250 may have a corrugated portion 252 that can extend to a length sufficient to allow such relative motion of the tub bag 130 (see FIG. 4).

The drum 30 is composed of a drum front 300, a drum center 320, a drum bag 340, and the like. Ball balancers 310 and 330 may be installed at the front and rear portions of the drum 30, respectively. The drum bag 340 is connected to the spider 350, and the spider 350 is connected to the rotation shaft 351. The drum 30 is configured to rotate within the tub 10 by the rotational force transmitted through the rotation shaft 351.

The rotation shaft 351 passes through the tub bag 130 and is connected to a motor (not shown). The rotating shaft 351 and the motor form a driving part of the washing apparatus. The rotation shaft 351 may be directly connected to the motor. Specifically, the rotor (not shown) of the motor and the rotation shaft 351 may be directly connected. A bearing housing 400 is coupled to the rear side 128 of the tub bag 130. In addition, the bearing housing 400 may rotatably support the rotation shaft 351 between the motor and the tub bag 130.

The stator is fixedly installed on the bearing housing 400. And the rotor is positioned around the stator. As described above, the rotor is directly connected to the rotation shaft 351. The motor is an outer rotor type motor and is directly connected to the rotation shaft 351.

Hereinafter, each part will be described in more detail.

2 and 3 disclose the tub front 100. The tub front 100 has a vertical front surface in the form of a donut at the front portion of the cylindrical surface constituting a part of the side wall of the tub 10. The rear portion of the cylindrical surface has an open shape, and a plurality of fastening holes 110 are provided on the outer periphery of the rear portion. The fastening hole 110 may be fastened to the corresponding fastening hole 127 (refer to FIG. 4) of the turret 120 and a fastening member such as a screw.

On the inner circumferential surface of the front surface of the tub front 100, a rim 101 is formed extending in all directions. The width of the rim portion 101 becomes narrower from the top to the bottom. The rim portion 101 may not be substantially formed under the inner edge of the front surface.

The rim unit 101 includes a water supply port 104 for supplying washing water, a hot air inlet 103 to be used during drying, a circulation water inlet 106 through which washing water circulated by a circulation pump is introduced, and a steam port through which steam is introduced. (105) and the like can be formed.

Since the washing apparatus according to the present invention is in a state in which the vibration of the tub 10 is significantly reduced, a water supply structure such as a water supply hose for water supply, a structure for drying such as a drying duct, a structure for supplying steam, and a circulating water supply A structure for doing so may be stably connected and formed to the tub 10. The hot air inlet 103 may be formed to extend from the rim 101 to the top in a substantially rectangular shape, but the hot air inlet 103 is required for a washing machine for both drying and may not be formed if the washing machine does not include a drying function. have.

As described above, since the water supply port 104, the hot air inlet 103, and the like are formed in the front of the tub front 100, the supply of washing water and hot air, etc. is made from the front side of the tub 10. .

The water supply port 104 may be located in front of the front end of the drum 30 accommodated in the tub 10. Accordingly, washing water or hot air may be directly introduced into the drum 30 through the opening of the drum 30 for inflow and outflow of laundry. Since the fluid supplied for treatment of laundry, such as washing water or hot air, can be directly introduced into the drum 30, more effective laundry treatment is possible.

In addition, when the detergent is supplied through the detergent box when water is supplied, the amount of detergent used may be reduced when the detergent is directly introduced into the drum 30, and the amount of washing water may be reduced accordingly.

In addition, detergent residues are deposited under the tub 10 to reduce contamination problems. In addition, when water is supplied from the front portion of the tub 10, there may be an effect of washing the door glass (not shown) by the water supplied.

In addition, even if the hot air is supplied from the front of the tub 10, if the hot air is supplied through the vertical surface of the tub 10, the flow of the hot air is c-shaped (hot air comes from the rear of the tub and is bent downward from the front of the tub, and then the tub The flow path is bent twice as in the case of being bent to the vertical front side of the cylinder to form a C-shaped complex flow path), which may not be good for the smooth flow of hot air. However, if the hot air inlet 103 is formed in the rim 101 of the tub front 100 as described above, the hot air needs to be bent vertically only once, so that it can flow smoothly.

The hot air inlet 103 and the water supply port 104 are positioned above the center point of the drum 30. Hot air and washing water are supplied from the upper front of the drum to the inside of the drum. Alternatively, if hot air and washing water need to be supplied from the front lower portion of the drum toward the inside of the drum, the rim portion 101 of the tub front 100 may be formed under the front surface accordingly. In addition, if it is necessary to be supplied in the left and right direction instead of the vertical supply as described above, the rim 101 may be formed at about the center of the inner edge of the front surface accordingly. That is, the shape of the rim unit 101 may vary depending on which direction the fluid, such as supplied hot air or washing water, is supplied.

The front end of the rim 101 is formed with a coupling portion 102 for coupling the foreign material trapping prevention member 200. The coupling portion 102 is formed extending forward from the front end of the rim portion 101 to have a cylindrical surface shape. Further, a rib 102a is formed on the outer peripheral surface of the cylindrical surface.

The foreign body trapping preventing member 200 is coupled with the combining part 102 by inserting the coupling part 102 into the foreign material trapping preventing member 200. So, the foreign body trapping prevention member 200 is formed with an insertion groove (not shown) so that the cylindrical surface on which the ribs 102a are formed can be inserted.

The tub front 100 is fixedly connected to the cabinet front (not shown). For such a fixed connection, fastening bosses 107a, 107b, 107c, and 107d are formed substantially surrounding the rim 101 on the front surface of the tub front 100. In the state where the tub front 100 is installed, the cabinet front (not shown) is positioned and then the screws are tightened from the front to the rear to be fastened.

2 and 3, a steam hose (not shown) may be connected to the steam port 105 formed in the tub front 100, and the steam port 105 flows into the steam port 105. It communicates with the steam guide 105a for guiding the steam toward the inside of the drum. In addition, the circulating water inlet 106 formed in the tub front 100 communicates with a circulating water guide 106a for guiding the circulating water introduced through the circulating water inlet 106 toward the inside of the drum. The steam port 105, the circulating water inlet 106, the steam guide 105a, the circulating water guide 106a, and the like may be integrally formed in the tub front 100. The tub front 100 may be made of a plastic injection product, and at that time, as a part of the tub front 100, the steam port 105, the circulation water inlet 106, the steam guide 105a, and the circulation water guide 106a are included together. It can be made by injection molding.

4 shows the tub front 100, the tubular 120, the tub bag 130, and the rear gasket 250 are combined.

Referring to FIG. 4, the turret 120 is formed in a cylindrical shape to surround the drum 30, but the front is opened as it is, and the rear portion has a donut-shaped rear surface. The front part is sealingly coupled to the tub front 100. The diameter of the rear surface of the tubular 120 is sufficiently larger than the outer diameter of the tub bag 130. Accordingly, a gap is formed between the tub bag 130 and the rear surface of the tubular 120 so that even if the tub bag 130 vibrates, there is no interference with the rear surface of the tub bag 120.

In addition, a rear gasket 250 is connected between the rear of the tubular 120 and the tub bag 130. The rear gasket 250 seals between the rear of the tubular 120 and the tub bag 130. The rear gasket 250 has a sufficiently flexible corrugated portion 252 so as not to interfere with the vibration of the tub bag 130.

One side of the turret 120 may be provided with a hot air outlet 121 for a washing machine for drying. It is natural that the hot air outlet 121 may not be necessary if it is only for the washing function, not the washing machine combined with drying.

Meanwhile, a separate structure for fixing and supporting the tub 10 with respect to the base is additionally formed under the tub front 100 and the tubular 120 as described above.

5 shows a state in which the suspension unit 40 is mounted on the base 600. 6 shows a state in which the suspension unit 40 is coupled to the rear of the tub 10.

5 to 7, the suspension unit 40 supports the bearing housing 400 with respect to the cabinet 60. Specifically, the suspension unit 40 supports the bearing housing 400 on the cabinet base 600. The suspension unit 40 includes three spring cylinder dampers 500, 510, and 520, and two cylinder dampers 530 and 540 that are obliquely supported in the front-rear direction. Since the cylinder dampers 530 and 540 are specific embodiments of the elastic dampers, they may be referred to as elastic dampers. At least one mass damper 700 may be installed in the suspension unit 40 to cancel vibration in response to the movement of the suspension unit. The suspension unit 40 is not completely fixedly connected to the cabinet base 600 but is connected to allow some degree of elastic deformation to allow the movement of the drum 30 in the front and rear and left and right directions.

That is, the suspension unit 40 is elastically supported to allow some degree of rotation back and forth and left and right with respect to its supporting point connected to the base 600. The suspension installed vertically for such elastic support may be installed on the base 600 via a rubber bushing (not shown). Among the suspensions, the vertically installed ones elastically buffer the vibration of the drum 30, and the slanted ones may be configured to attenuate the vibrations of the drum 30. That is, in the vibration system including the spring and the damping means, the vertically installed one serves as a spring, and the inclined one may be configured to serve as the damping means. In addition, the mass damper 700 may be configured to lower the central position of the entire suspension unit 40 and to compensate for vibration in response to the movement of the suspension unit.

The tub 10 is fixedly installed in the cabinet except for the tub bag 130, and the vibration of the drum 30 (that is, the vibration of the drum and the driving unit) is buffered and supported by the suspension unit 40. In practice, the support structure of the tub 10 can be said to be a separate shape from the support structure of the drum 30, and thus the tub 10 does not vibrate even if the drum 30 vibrates.

The bearing housing 400 includes a bearing support 401 that supports the bearing. A tub bag fastening part 407 to which the tub bag 250 is mounted is formed in the front of the bearing housing 400. A stator fastening part 402 to which a stator of a motor is mounted is formed at the rear of the bearing housing 400.

Here, the suspension unit 40 includes a bearing housing 400, a first inclined bracket 431 and a second inclined bracket 430, a first suspension arm 450 and a second suspension arm 440.

The bearing housing 400 includes a first extension part 406a and a second extension part 406b extending radially from the bearing housing 400 in both left and right sides. For example, the first extension part 406a and the second extension part 406b may extend radially in both left and right sides toward the corner part of the base 600 from the bearing housing 400. That is, the first extension part 406a and the second extension part 406b may extend away from each other in left and right sides toward the edge part of the base 600 from the bearing housing 400. The first extension part 406a and the second extension part 406b may be integrally formed with the bearing housing 400, or may be formed separately and coupled to the bearing housing 400.

The first inclined bracket 431 and the second inclined bracket 430 are connected to the first extension part 406a and the second extension part 406b. The first tilt bracket 431 and the second tilt bracket 430 may be formed to extend in the same direction as the extension directions of the first extension part 406a and the second extension part 406b, respectively.

A first suspension arm 450 and a second suspension arm 440 are connected to the first inclined bracket 431 and the second inclined bracket 430, respectively. Specifically, a first suspension arm 450 at opposite ends of the first and second inclined brackets 431 and 430 respectively coupled to the first extension part 406a and the second extension part 406b. ) And the second suspension arm 440 may be connected, respectively. The first suspension arm 450 and the second suspension arm 440 extend in a direction of an axis relative to the rotation of the drum. That is, the first suspension arm 450 and the second suspension arm 440 may be formed to extend in the direction of the rotation axis of the drum or tub. If it is formed extending in the axial direction as described above, it may be referred to as an axial bracket.

Mass dampers 700 may be installed on the first suspension arm 450 and the second suspension arm 440, respectively. For example, the mass damper 700 is preferably installed on each of the first suspension arm 450 and the second suspension arm 440 one by one.

Here, the first extension part 406a, the first inclined bracket 431, and the first suspension arm 450 are the second extension part 440, the second inclined bracket 430, and the second suspension arm 440 Each is formed in a symmetrical shape. Here, the first and second inclined brackets 431 and 430 serve to hold the center of gravity when laundry is accommodated in the drum, and also serve as a mass in the vibration system in which the drum 30 vibrates. In addition, the mass damper 700 serves to lower the central position of the entire suspension unit 40. Specifically, the mass damper 700 serves to lower the central position of the entire suspension unit 40, the drive unit (ie, the rotation shaft and the motor) and the drum 30 in a coupled state.

The suspension unit 40 includes a first spring cylinder damper 520, a second spring cylinder damper 510, and a third spring cylinder damper 500 arranged in a vertical direction for buffering in the vertical direction, and buffers in the front and rear directions. For this purpose, it may include a first cylinder damper 540 and a second cylinder damper 530 arranged to be inclined.

Here, the first spring cylinder damper 520, the second spring cylinder damper 510, and the third spring cylinder damper 500 are located in one rear, and two left and right in front of the center of the base 600. Can be placed. In addition, the first cylinder damper 540 and the second cylinder damper 530 may be arranged to be inclined in the front and rear directions from both rear and left sides with respect to the center of the base 600.

Specifically, the first spring cylinder damper 520 is connected between the first suspension arm 450 and the cabinet 60. That is, the first spring cylinder damper 520 is connected between the first suspension arm 450 and the base 600. In addition, the second spring cylinder damper 510 is connected between the second suspension arm 440 and the base 600. The third spring cylinder damper 500 is directly connected between the bearing housing 400 and the base 600.

And the first cylinder damper 540 may be installed inclined between the first suspension arm 450 and the rear portion of the base, and the second cylinder damper 530 is inclined between the second suspension arm 440 and the rear portion of the base. Can be installed.

That is, the third spring cylinder damper 500 is disposed in the center of the rear, and the first spring cylinder damper 520 and the second spring cylinder damper 510 are disposed in the front left and right. In addition, a first cylinder damper 540 and a second cylinder damper 530 are positioned on both sides of the third spring cylinder damper 500. That is, each of the spring cylinder dampers 500, 510, and 520 and the cylinder dampers 530 and 540 may be arranged to be symmetrical left and right.

Hereinafter, a mass damper 700 according to an embodiment of the present invention will be described in detail with reference to FIGS. 7 to 10.

7 is a perspective view illustrating a state in which a mass damper is coupled to a suspension unit of a washing apparatus according to the present invention, and FIGS. 8 to 10 are perspective views illustrating a mass damper according to embodiments of the present invention.

The mass damper 700 may be expressed as a component of the suspension unit 40, and it is not excluded that the mass damper 700 itself is expressed as a separate component coupled to the suspension unit 40.

In addition, referring to FIG. 7, it will be described that the mass damper 700 according to the embodiment of the present invention is installed on the second suspension arm 440, but the mass damper 700 is the same for the first suspension arm 450. Can be installed.

Referring to FIG. 7, the second suspension arm 440 is spaced apart from the tub 10 at a predetermined interval on one side of the tub 10 and extends in the direction of the rotation axis. For example, the second suspension arm 440 may be formed to be spaced apart from the lower portion of the tub 10 at a predetermined interval in the lateral direction of the tub 20 to extend in the rotation axis direction. In addition, one end of the second suspension arm 440 is connected to the second inclined bracket 430 and the other end opposite to the one end is connected to the second spring cylinder damper 510. In addition, one end of the second cylinder damper 530 is coupled to the base 600, and the other end opposite to the one end is connected to the second suspension arm 440. For example, the other end of the second cylinder damper 530 may be connected to the coupling portion 441 formed at the center portion in the longitudinal direction of the second suspension arm 440.

The mass damper 700 may be detachably installed on the suspension unit 40. Specifically, the mass damper 700 may be detachably installed on the second suspension arm 440. For example, the mass damper 700 may be detachably installed between the coupling portion 441 of the second suspension arm 440 and the other end of the second suspension arm 440. When the mass damper 700 is installed on the second suspension arm 440, the mass damper 700 is a second suspension arm ( 440).

The mass damper 700 includes a mass damper bracket 710 for installing the mass damper in a suspension unit and a mass 720 that is detachably installed on the mass damper bracket 710. The mass 720 may be a mass such as a rigid body. In addition, the mass damper bracket 710 includes a horizontal panel 712 having a predetermined width and side panels 715 extending in a vertical direction from both sides of the horizontal panel, and the side panels 715 ) Between the masses 720 may be installed.

The mass 720 is installed on the mass damper bracket 710 under the second suspension arm 440. At this time, the second suspension arm 440 and the mass damper bracket 710 may be integrally formed, and the first suspension arm 450 and the mass damper bracket 710 may also be integrally formed. The mass 720 is installed between the side panels 715 of the mass damper bracket 710 so as to be spaced apart from the base 600 of the cabinet at a predetermined interval. Specifically, when the mass damper 700 (that is, the mass damper bracket 710 and the mass 720) is installed in the suspension unit 40, the mass damper 700 is from the base 600 of the cabinet. It is installed in the suspension unit 40 so as to be spaced apart from the upper side of 600 at a predetermined interval. Accordingly, the mass damper 700 serves to increase the weight of the suspension unit 40 itself, while lowering the central position of the entire suspension unit 40. In addition, the mass damper 700 serves to elastically attenuate the vibration of the suspension unit 40.

A plurality of fastening holes 714 are formed in the horizontal panel 712. Accordingly, the mass damper 700 may be coupled to the second suspension arm 440 by screwing the horizontal panel 712 through the fastening hole 714 at the top of the second suspension arm 440. . In this case, the side panels 715 of the mass damper bracket 710 pass through the side surfaces of the second suspension arm 440 and extend to the lower side of the second suspension arm 440.

According to an embodiment, the horizontal panel 712 may include a step forming portion 713 extending while forming a step in a horizontal direction. The step forming portion 713 includes a vertical portion extending vertically downward from the horizontal panel 712 and a horizontal portion extending horizontally from an end of the vertical portion. The mass damper bracket 710 may be connected to the second suspension arm 440 so that the second suspension arm 440 is disposed between the vertical portion and one of the side panels 715. Accordingly, the gap between the side panels 715 becomes larger than the width of the second suspension arm 440.

In addition, when the mass damper 700 is coupled to the second suspension arm 440, the step forming portion 713 may be disposed to face the lower side of the tub 10. As the step forming portion 713 is disposed to face the lower side of the tub 10, the excess space in the cabinet 60, that is, the cabinet, while avoiding interference between the mass damper 700 and other components of the washing apparatus Within 60, it is possible to make the most of the excess space under the side of the tub 10.

The mass 720 may be installed on the mass damper bracket 710 to be spaced apart from the horizontal panel 712 and the side panels 715 of the mass damper bracket 710 by a predetermined distance. For example, a buffer member 740 such as rubber may be disposed between the side panels 715 and the outer surface of the mass 720. The buffer member 740 elastically supports the mass 720 with respect to the side panels 715. Specifically, one or more buffer members may be disposed between the side panels 715 and the outer surface of the mass 720 facing the side panels 715 inside the side panels 715.

A plurality of fastening holes 716 are formed in the side panels 715, and a plurality of fastening holes 716 are formed in the mass 720, corresponding to the fastening holes 716 formed in the side panels 715, and passing through the mass 720. Four fastening holes 721 may be formed. At this time, a plurality of buffer members 740 (ie, rubber) are disposed between the side panels 715 and the outer surface of the mass 720, and the fastening hole 716 of the side panel, the buffer member 740 ) And the mass damper bracket 710 and the mass 720 may be coupled by a pin member 730 penetrating all of the fastening holes 721 of the mass corresponding to the fastening holes 716 of the side panel. A plurality of fastening holes 716 may be formed on each side panel 715 at predetermined intervals, and it is preferable that 9 is formed on each side panel 715 at predetermined intervals.

More specifically, one or more buffer members 740 may be respectively installed on outer surfaces of the mass 720 facing the side panels 715, respectively. For example, when one pin member 730 penetrates through the fastening hole 716 of the side panel and the fastening hole 721 of the mass, the pin member 730 may include the side panels 715 and the mass 720. The buffer member 740 may be fixed between the side panels 715 and the outer surfaces of the mass 720 by penetrating through the buffer member 740 disposed between the outer surfaces of ).

For example, when the plurality of pin members 730 pass through the fastening holes 716 of the side panel and the fastening holes 721 of the mass corresponding thereto, each pin member 730 has two It may penetrate through the buffer member 740. In this case, the two buffer members 740 are disposed between one of the side panels 715 and one side of the mass 720 and between the other side of the side panels 715 and the other side of the mass 720, respectively. Can be.

For example, FIG. 8 shows a case in which four pin members 730 penetrate each of the fastening holes 716 of the side panel and the fastening holes 721 of the mass corresponding thereto, and FIG. 9 shows two pins. A case where the member 730 passes through the fastening holes 716 of the side panel and the fastening holes 721 of the mass corresponding thereto is shown. In the embodiment shown in FIG. 8, eight buffer members 740 may be provided, and in the embodiment shown in FIG. 9, four buffer members 740 may be provided. That is, two buffer members 740 may be provided in each of the pin members 730. At least two buffer members 740 may be provided, but it is preferable that four are provided in order to achieve both countermeasures against torsion (rotation of the mass) of the buffer member 740 and a low spring constant.

In addition, according to another embodiment of the present invention (FIG. 10), the buffer member 740 may be fitted between the side panels 715 and the outer surface of the mass 720 in a tight fit method. I can. That is, when one or more buffer members 740 are forcibly fitted between the side panels 715 and the outer surface of the mass 720, a fastening hole is formed in the side panels 715 and the mass 720. It doesn't have to be. Meanwhile, it is not excluded that the buffer member 740 is attached between the side panels 715 and the outer surface of the mass 720 by bonding or adhesion.

The mass 720 may be formed as a rigid body. In addition, cast iron or steel may be used as the material of the mass 720, and it is preferable that the mass 720 is formed of cast iron, but it is not excluded that the mass 720 is formed of another metal or non-metal material. The mass of the mass 720 may be 2 to 3 kg. The buffer member 740 has a spring constant capable of supporting the mass 720 and is preferably formed of a material capable of withstanding the vibration during resonance of the mass 720. Specifically, the buffer member 740 may be formed of natural rubber or styrene butadiene rubber, or a composite of natural rubber and styrene butadiene rubber.

As the mass damper 700 is installed in the suspension unit 40, since the vibration noise can be canceled by the mass damper, it is possible to further reduce the vibration noise. That is, the vibration of the suspension unit 40 is reduced due to the weight of the mass damper 700, and even if the vibration of the suspension unit 40 is transmitted to the mass damper 700, such vibration is buffered by the buffer member 740 Can be.

In addition, since the movement of the mass damper canceled according to the amount of vibration of the suspension unit 40 is passively changed, the vibration can be reduced regardless of the amount of vibration. In addition, as the mass dampers are installed in the first suspension arm 450 and the second suspension arm 440 of the suspension unit 40, the vibration generated from the drum 30 is reduced to the first suspension arm 450 and the second suspension. Vibration may be suppressed on a vibration transmission path transmitted to the base 600 or the floor on which the base 600 is installed through the arm 440.

In addition, since each of the components of the mass damper 700, that is, the mass damper bracket 710, the mass 720, the pin member 730, and the buffer member 740, can be separately replaced, the place where the washing device is installed According to the characteristics of, it is possible to configure the mass damper 700. For example, depending on the characteristics of the place where the washing machine is installed, changing the mass of the mass 720, the hardness, shape and number of the provided buffer member 740 (that is, the hardness, shape and number of rubber), etc. Accordingly, the characteristics of the mass damper 700 itself can be changed.

In the above, it has been described that the cushioning member 740 such as rubber is coupled between the mass 720 and the mass damper bracket 710 by the pin member 730. However, it is not excluded that the buffer member 740 and the mass 720 are directly attached to the first suspension arm 450 and the second suspension arm 440 by bonding or adhesion.

7 is a perspective view of the interior of the cabinet 60 of the washing machine as viewed from one side, in the same manner as the mass damper 700 is coupled to the second suspension arm 440, the first suspension arm 450 It can also be installed. On the other hand, depending on the installation environment such as the floor on which the washing machine is installed, the mass dampers 700 on one side and the opposite side are mutually extended in the longitudinal direction of the first suspension arm 450 and the second suspension arm 440. It is of course possible to be installed in different locations.

Although described in detail with respect to the preferred embodiments of the present invention as described above, those of ordinary skill in the art to which the present invention pertains, without departing from the spirit and scope of the present invention defined in the appended claims It will be possible to practice the present invention by various modifications. Therefore, changes to the embodiments of the present invention will not be able to depart from the technology of the present invention.

100: Tub Front 120: Turbo
130: tub bag 200: foreign water trapping prevention member
250: rear gasket 300: drum front
320: drum center 340: drum bag
350: spider 351: rotating shaft
400: bearing housing 600: base
700 mass damper

Claims (19)

cabinet;
A tub installed in the cabinet;
A drum installed in the tub;
A driving unit including a rotation shaft connected to the drum and a motor connected to the rotation shaft; And
A suspension unit connected to the driving unit, spaced apart from the tub, and buffering and supporting the drum against the base of the cabinet; and
The suspension unit
A bearing housing rotatably supporting the rotating shaft;
An extension part extending from the bearing housing toward the base;
A suspension arm extending from the extension toward the front of the cabinet;
At least one elastic damper connecting the suspension arm and the base; And
At least one mass damper coupled to the suspension arm to increase the weight of the suspension unit is installed,
The mass damper is
A mass damper bracket coupled to the suspension arm and disposed to be spaced apart from the tub; And
Including; a mass supported by the mass damper bracket to be spaced apart from the tub, and positioned between the suspension arm and the base,
The mass damper bracket is
A horizontal panel having a predetermined width and side panels extending in a vertical direction from both sides of the horizontal panel,
A plurality of fastening holes are formed in the side panels to be spaced apart from each other along the extending direction of the side panels, and a plurality of fastening holes corresponding to the fastening holes formed in the side panels are formed in the mass,
Further comprising a pin member for coupling the side panel and the mass through the fastening hole of the side panel and the fastening hole of the mass,
Wherein the pin member selectively penetrates the fastening hole of the side panel and the fastening hole of the mass to determine a coupling position of the mass. The method of claim 1,
Further comprising at least one spring cylinder damper connecting the suspension arm and the base,
The elastic damper is
It is coupled to the suspension arm between the spring cylinder damper and the extension,
The mass damper is
Washing apparatus, characterized in that coupled to the suspension arm between the spring cylinder damper and the elastic damper. delete The method of claim 1,
Washing apparatus, characterized in that the mass is elastically supported between the side panels. The method of claim 4,
The horizontal panel has a step forming portion extending while forming a step in a horizontal direction,
When the mass damper is coupled to the suspension arm, the step forming portion is disposed to face a lower side of the tub. The method of claim 4,
A washing apparatus, wherein a buffer member is disposed between the side panels and an outer surface of the mass to elastically support the mass with respect to the side panels. delete The method of claim 1,
A plurality of buffer members are disposed between the side panels and the outer surface of the mass,
Wherein the pin member penetrates the fastening hole of the side panel, the buffer member, and the fastening hole of the mass to couple the mass damper bracket and the mass. delete The method of claim 1,
The mass is installed in the mass damper bracket through a buffer member under the suspension arm. The method of claim 1,
Washing apparatus, characterized in that the tub is fixedly installed in the cabinet. The method of claim 1,
The tub is a washing apparatus, characterized in that it comprises a tub front constituting a front portion, and a turret constituting a rear portion and coupled to the tub front. The method of claim 12,
The turret has an opening at a rear portion, a tub bag is disposed in the opening, and a rear gasket made of a flexible material is installed between an inner circumference of the opening and an outer circumference of the tub bag. delete delete delete delete The method of claim 10,
Washing apparatus, characterized in that the buffer member is formed of rubber and is arranged in plural. The method of claim 1,
Washing apparatus, characterized in that the mass is formed in a rigid body.

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