JP7411954B2 - vertical washing machine - Google Patents

Description

The present invention relates to a vertical washing machine.

The vertical washing machine disclosed in Patent Document 1 below includes a water tank for receiving washing water, a washing machine motor provided at the bottom of the water tank, and a washing machine motor bent into a U-shape so as to straddle the washing machine motor from below. and a motor cover attached to an aquarium fixture screwed to the bottom of the aquarium. The motor cover has a cylindrical container shape and covers the washing machine motor from below. This prevents the washing tub motor from being immersed in the washing water when drainage failure occurs in the waterproof pan in which the vertical washing machine is installed and washing water accumulates in the waterproof pan. Since a gap is provided between the bottom of the water tank and the top of the motor cover, the washing machine motor within the motor cover is exposed to the atmosphere through this gap.

Japanese Patent Application Publication No. 2019-118676

The motor cover described in Patent Document 1 is only used for waterproofing, and this motor cover is not expected to be used to prevent the operating sound of a drive unit such as a washing machine motor from leaking to the outside. In particular, since a gap is provided between the motor cover and the bottom of the water tank to allow the washing machine motor to be exposed to the atmosphere, the operating noise of the washing machine motor tends to leak outside through this gap.

The present invention was made against this background, and an object of the present invention is to provide a vertical washing machine that can prevent the operating noise of the drive unit from leaking to the outside.

The present invention includes an inner tub that can be rotated to accommodate laundry; an outer tub that accommodates the inner tub; , an outer tank having a lower end portion provided with a bottom wall, at least a motor that generates a driving force for rotating the inner tank, a drive unit disposed below the bottom wall, and the bottom wall. a cover having a cylindrical part that has an upper end attached to a lower surface part and surrounds the driving part; a closing part that closes an internal space of the cylindrical part from below; and an inner surface of the cover that faces the driving part. and a sound insulating member attached to the vertical washing machine.

Further, the present invention is characterized in that the inner surface of the cover is constituted by a plurality of flat surfaces.

Further, the present invention is characterized in that the vertical washing machine further includes a cushion member disposed between the cylinder part and the lower surface part.

According to the present invention, in the cover, the cylindrical part surrounds the driving part disposed below the bottom wall of the outer tank, and the closing part closes the internal space in the cylindrical part from below, in which the driving part is disposed. . Since the upper end of the cylindrical portion is attached to the lower surface of the bottom wall, the cover covers the drive portion in a substantially hermetic state. Additionally, a sound insulating member is attached to the inner surface of the cover. This can prevent the operating noise of the drive section inside the cover from leaking to the outside.

Further, according to the present invention, since the inner surface of the cover is composed of a plurality of flat surfaces, the sound insulating member can be attached to the inner surface of the cover more easily and reliably than when the inner surface is composed of curved surfaces. be able to.

Further, according to the present invention, the cushion member disposed between the cylindrical portion of the cover and the lower surface portion of the bottom wall of the outer tank can prevent the cover from rattling.

FIG. 1 is a schematic vertical cross-sectional right side view of a vertical washing machine according to an embodiment of the present invention. FIG. 2 is a perspective view of a cover included in the washing machine. FIG. 3 is a perspective view of the main parts of the washing machine.

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a schematic vertical cross-sectional right side view of a vertical washing machine 1 according to an embodiment of the present invention. The direction perpendicular to the plane of the paper in FIG. 1 is referred to as the horizontal direction X of the vertical washing machine 1, the horizontal direction in FIG. 1 is referred to as the longitudinal direction Y of the vertical washing machine 1, and the vertical direction in FIG. This is called the vertical direction Z. In the left-right direction X, the far side of the paper in FIG. 1 is called the left side X1 of the vertical washing machine 1, and the near side of the paper in FIG. 1 is called the right side X2 of the vertical washing machine 1. In the longitudinal direction Y, the left side in FIG. 1 is referred to as the front side Y1, and the right side in FIG. 1 is referred to as the rear side Y2. In the vertical direction Z, the upper side is referred to as upper side Z1, and the lower side is referred to as lower side Z2.

Although the vertical washing machine 1 includes a washer/dryer having a drying function, the vertical washing machine 1 will be described below by taking as an example a washing machine that performs a washing operation without the drying function. The vertical washing machine 1 includes a casing 2 forming an outer shell, an outer tub 3 disposed within the casing 2, an inner tub 4 housed within the outer tub 3, and a housing 4 housed within the inner tub 4. and a rotating blade 5. The outer tub 3 and the inner tub 4 constitute a washing tub 6. The vertical washing machine 1 includes a motor 7 that generates driving force to rotate the inner tub 4 and the rotary blades 5, and a motor 7 that applies a brake to the rotation of the inner tub 4 and intermittently transmits the driving force of the motor 7 to the inner tub 4. A brake clutch mechanism 8 is included.

The housing 2 is made of metal, for example, and is formed in a box shape. An opening 15 is formed in the upper surface 2A of the housing 2 to allow communication between the inside and outside of the housing 2. A door 16 for opening and closing the opening 15 is provided on the top surface 2A.

The outer tank 3 is made of resin, for example, and is formed into a cylindrical shape with a bottom. The outer tank 3 is connected to the housing 2 via a support member 17 such as a suspension rod or shock absorber having a spring and a damping mechanism. Thereby, the entire washing tub 6 including the outer tub 3 and the inner tub 4 is elastically supported by the support member 17. The outer tank 3 includes a substantially cylindrical circumferential wall 3A arranged along the vertical direction Z, a bottom wall 3B that closes the hollow part of the circumferential wall 3A from the lower side Z2, and an edge on the upper side Z1 side of the circumferential wall 3A. It has a ring-shaped annular wall 3C that borders the circumferential wall 3A and extends toward the center of the circle. The bottom wall 3B constitutes the lower end of the outer tank 3, and the annular wall 3C constitutes the upper end of the outer tank 3. An entrance/exit 18 is formed in the center of the annular wall 3C, which communicates with the hollow portion of the circumferential wall 3A from the upper side Z1. The entrance/exit 18 faces the opening 15 of the housing 2 from the lower side Z2 and is in communication with it. A door 19 for opening and closing the entrance/exit 18 is provided in the annular wall 3C. The bottom wall 3B is formed into a disk shape extending substantially horizontally, and a through hole 3D passing through the bottom wall 3B is formed at the center of the circle of the bottom wall 3B.

Water is stored in the outer tank 3. A water supply channel 20 connected to a faucet for tap water is connected to the annular wall 3C of the outer tank 3 from the upper side Z1, and tap water is supplied into the outer tank 3 from the water supply channel 20. A water supply valve 21 that is opened and closed to start and stop water supply is provided in the middle of the water supply channel 20. A drainage channel 22 is connected to the bottom wall 3B of the outer tank 3 from the lower side Z2, and water in the outer tank 3 is discharged from the drainage channel 22 to the outside of the machine. A drain valve 23 is provided in the middle of the drain channel 22 and is opened and closed to start and stop draining.

The inner tub 4 is made of metal, for example, and has a bottomed cylindrical shape that is one size smaller than the outer tub 3, and can accommodate the laundry Q therein. The inner tank 4 has a substantially cylindrical circumferential wall 4A disposed along the vertical direction Z, and a bottom wall 4B that is provided at the lower end of the inner tank 4 and closes the hollow part of the circumferential wall 4A from the lower side Z2. .

The inner peripheral surface of the circumferential wall 4A is the inner peripheral surface of the inner tank 4. The upper end portion of the inner circumferential surface of the circumferential wall 4A is an entrance/exit 24 that exposes the hollow portion of the circumferential wall 4A to the upper side Z1. The entrance/exit 24 is formed at the upper end of the inner tank 4 . The entrance/exit 24 faces the entrance/exit 18 of the outer tank 3 from the lower side Z2 and is in communication with it. A user takes the laundry Q into and out of the inner tub 4 from the upper side Z1 through the opened opening 15, the entrance/exit 18, and the entrance/exit 24.

The inner tank 4 is housed coaxially within the outer tank 3. The inner tank 4 housed in the outer tank 3 is rotatable about an axis J that forms its central axis and extends in the vertical direction Z. Further, a plurality of through holes 4C are formed in the circumferential wall 4A and the bottom wall 4B of the inner tank 4, and the water in the outer tank 3 is transferred between the outer tank 3 and the inner tank 4 via the through holes 4C. I can come and go. Therefore, the water level in the outer tank 3 and the water level in the inner tank 4 match.

The bottom wall 4B of the inner tank 4 is formed in the shape of a disc that extends substantially parallel to the bottom wall 3B of the outer tank 3 at an interval above Z1, and is located at the center of a circle that coincides with the axis J on the bottom wall 4B. A through hole 4D is formed through the bottom wall 4B. A tubular support shaft 25 is provided on the bottom wall 4B and extends downward along the axis J while surrounding the through hole 4D. The support shaft 25 is inserted into the through hole 3D of the bottom wall 3B of the outer tank 3, and the lower end of the support shaft 25 is located below the bottom wall 3B Z2.

The rotor blade 5 is a so-called pulsator, and is formed into a disk shape with the axis J as the center, and is arranged on the bottom wall 4B in the inner tank 4 so as to be concentric with the inner tank 4. A plurality of blades 5A arranged radially are provided on the upper surface of the rotary blade 5 facing the entrance/exit 24 of the inner tank 4. The rotary blade 5 is provided with a rotating shaft 26 extending from the center of the circle along the axis J toward the lower side Z2. The rotating shaft 26 is inserted into the hollow part of the support shaft 25, and the lower end of the rotating shaft 26 is located below the bottom wall 3B of the outer tank 3 Z2.

The motor 7 is an electric motor such as an inverter motor. The motor 7 is disposed within the housing 2 on the lower side Z2 of the bottom wall 3B of the outer tank 3. The motor 7 has an output shaft 30 that protrudes toward the upper side Z1 and rotates about the axis J, and outputs the generated driving force from the output shaft 30.

The brake clutch mechanism 8 includes a known brake (not shown) configured by a brake band, for example, and a known clutch (not shown). The brake clutch mechanism 8 incorporates a known speed reduction mechanism 31. The output shaft 30 of the motor 7 is connected to the lower end of the support shaft 25 of the inner tank 4 via a clutch in the brake clutch mechanism 8 . The output shaft 30 and the support shaft 25 constitute a transmission path for driving force from the motor 7 to the inner tank 4 . The clutch disconnects or connects this transmission path. The output shaft 30 is connected to the lower end of the rotating shaft 26 via a speed reduction mechanism 31. Therefore, when the motor 7 is in operation, the rotor blade 5 connected to the rotary shaft 26 rotates at a lower speed than the output shaft 30 due to the transmission of the driving force of the motor 7 .

The motor 7 and the brake clutch mechanism 8 constitute a drive section 32. The output shaft 30 of the motor 7 may be directly connected to the support shaft 25 of the inner tank 4, and in that case, the drive section 32 only needs to have at least the motor 7. The drive unit 32 is arranged on the lower side Z2 of the bottom wall 3B of the outer tank 3. Specifically, the motor 7 is arranged so that the center of the output shaft 30 coincides with the axis J, and the brake clutch mechanism 8 is arranged between the bottom wall 3B of the outer tank 3 and the motor 7.

The vertical washing machine 1 includes a control unit 35 built in the housing 2 as a microcomputer including a CPU, ROM, RAM, and the like. The control unit 35 executes the washing operation by controlling the operations of the motor 7, the brake clutch mechanism 8, the water supply valve 21, the drain valve 23, and the like. The washing operation includes a washing process of washing the laundry Q, a rinsing process of rinsing the laundry Q after the washing process, and a dewatering process of rotating the inner tub 4 to dehydrate the laundry Q after the rinsing process.

In the washing process, the control unit 35 operates the motor 7 after keeping the drain valve 23 closed and opening the water supply valve 21 for a predetermined time to fill the outer tank 3 and the inner tank 4 with water up to a predetermined water level. The rotor blade 5 is rotated. Thereby, the laundry Q in the inner tub 4 is agitated by the mechanical force caused by the blades 5A of the rotating rotary blade 5 and the mechanical force caused by the water flow generated in the inner tub 4 as the rotary blade 5 rotates. By stirring here, dirt is removed from the laundry Q. Note that the control unit 35 may rotate the inner tank 4 together with the rotary blade 5 by controlling the operation of the clutch of the brake clutch mechanism 8. Further, detergent may be put into the inner tub 4, and in this case, dirt on the laundry Q in the inner tub 4 is broken down by the detergent. When the predetermined washing time has elapsed, the control unit 35 operates the brake of the brake clutch mechanism 8 to stop the rotor 5, opens the drain valve 23 to drain the outer tank 3 and the inner tank 4, and completes the washing process. end.

In the rinsing process, the control unit 35 opens the water supply valve 21 for a predetermined period of time with the drain valve 23 closed to store tap water in the outer tank 3 and the inner tank 4 to a predetermined water level, and then rotates the rotor 5. let As a result, the laundry Q in the inner tub 4 is rinsed. When the predetermined rinsing time has elapsed, the control unit 35 stops the rotor 5, opens the drain valve 23, drains the outer tank 3 and the inner tank 4, and ends the rinsing process. The rinsing step may be performed multiple times.

In the dehydration step, the control unit 35 operates the motor 7 with the drain valve 23 open to rotate the inner tank 4 at a high speed at a predetermined dehydration rotation speed. The laundry Q in the inner tub 4 is dehydrated by the centrifugal force generated by the high speed rotation of the inner tub 4 at the dewatering rotation speed. Water oozing out of the laundry Q due to dehydration is discharged from the drainage channel 22 to the outside of the machine. After rotating the inner tank 4 at high speed for a predetermined period of time, the control unit 35 stops the motor 7 and operates the brake of the brake clutch mechanism 8 to stop the inner tank 4. The dehydration step may be performed as an intermediate dehydration step after the washing step. Moreover, when a rinsing process is implemented multiple times, an intermediate dehydration process may be implemented after each rinsing process other than the last rinsing process. The dehydration step that is finally performed after the final rinsing step is called the final dehydration step to distinguish it from the intermediate dehydration step. The dehydration rotation speed in the final dehydration step may be higher than the dehydration rotation speed in the intermediate dehydration step.

The vertical washing machine 1 includes a cover 40 that is attached to the bottom wall 3B of the outer tub 3 and covers the drive unit 32, a sound insulating member 41 that is attached to the cover 40, and a lower surface portion 3E of the bottom wall 3B and the cover 40. It further includes a cushion member 42 disposed therebetween.

Referring to FIG. 2, the cover 40 integrally includes a cylindrical portion 40A and a closing portion 40C that closes the internal space 40B of the cylindrical portion 40A from the lower side Z2, and is made of metal such as sheet metal. . The cylinder portion 40A is a rectangular cylinder having a polygonal outline in plan view, and is arranged coaxially with the axis J. The cylindrical portion 40A in this embodiment is configured by arranging eight rectangular flat vertical plates 43 that are long in the vertical direction Z in a ring shape surrounding the axis J. Therefore, the cylindrical portion 40A has an octagonal outline in plan view.

Among these eight vertical plates 43, a pair of vertical plates 43A facing each other with the axis J in between has a rectangular plate-shaped first flange portion extending outward in the radial direction R with the axis J as a reference. 43B is provided. The first flange portion 43B has a thickness direction that coincides with the vertical direction Z, and is elongated along the short side of the upper side Z1 of the vertical plate 43A. One insertion hole 43C that penetrates the first flange portion 43B in the vertical direction Z is formed at both ends in the longitudinal direction of the first flange portion 43B. The upper end surface of the first flange portion 43B and the upper end surface of the vertical plate 43A provided with the first flange portion 43B are arranged flush.

A rectangular plate-shaped second flange portion 43D extending outward in the radial direction R is provided at the upper end of each of the six vertical plates 43 other than the pair of vertical plates 43A. The second flange portion 43D is one size or more smaller than the first flange portion 43B, and is provided in the middle of the short side of the upper Z1 of the corresponding vertical plate 43. The upper end surface of the second flange portion 43D and the upper end surface of the vertical plate 43 provided with the second flange portion 43D are arranged flush.

The upper end surface of the upper end portion 40D of the cylindrical portion 40A is formed into an annular shape by the upper end surfaces of the eight vertical plates 43, the upper end surfaces of each of the first flange portions 43B, and the upper end surface of each of the second flange portions 43D. . In this embodiment, the upper end surface of the upper end portion 40D is configured to be flush and flat over the entire area, but a slight height difference may be provided somewhere on the upper end surface of the upper end portion 40D.

An inner surface 43E of each of the eight vertical plates 43 facing the internal space 40B of the cylindrical portion 40A is a rectangular flat surface extending in the vertical direction Z as one main surface of the vertical plate 43. Since the eight vertical plates 43 are arranged in an annular shape to form the eight sides of the octagon in plan view, the internal space 40B defined by the inner surface 43E of these vertical plates 43 has an octagonal cylindrical shape. be. Moreover, the inner surface 40E of the cover 40 is constituted by the inner surfaces 43E of these vertical plates 43, that is, a plurality of flat surfaces.

In each vertical plate 43, an outer surface portion 43F opposite to the inner surface portion 43E is a rectangular flat surface extending in the vertical direction Z as the other main surface of the vertical plate 43. One or more substantially triangular plate-shaped reinforcing portions 43G connected to the outer surface portions 43F of the corresponding vertical plates 43 are provided on the lower end surfaces of each of the first flange portion 43B and the second flange portion 43D.

The closing portion 40C has a flat plate shape with a thickness direction that coincides with the vertical direction Z, and has an octagonal shape having eight sides connected to the lower ends of the eight vertical plates 43, respectively, in plan view. Each of the upper surface portion 40F and the lower surface portion 40G (see FIG. 1) of the closing portion 40C is a flat surface extending in the front, back, right and left directions. The upper surface portion 40F is one of the plurality of flat surfaces that constitute the inner surface portion 40E of the cover 40. Therefore, the inner surface portion 40E is constituted by nine flat surfaces, that is, the inner surface portions 43E of the eight vertical plates 43, and the upper surface portion 40F of the closing portion 40C.

The sound insulating member 41 is a sheet made of special rubber, specifically acrylic rubber, and is attached so as to cover the entire area of the inner surface 40E of the cover 40, as shown with dots in FIG. A plurality of sound insulating members 41 exist according to each of the inner surface portion 43E of each vertical plate 43 and the upper surface portion 40F of the closing portion 40C, and one sound insulating member 41 is attached to a corresponding portion of the inner surface portion 43E and the upper surface portion 40F. The inner surface portion 43E and the upper surface portion 40F that constitute the inner surface portion 40E are both flat surfaces. Therefore, the sound insulating member 41 attached to the inner surface 43E has a rectangular flat plate shape along the inner surface 43E. The sound insulating member 41 attached to the upper surface portion 40F has an octagonal flat plate shape along the upper surface portion 40F.

The cushion member 42 is made of rubber, for example, and is attached to the entire upper end surface of the upper end portion 40D. The shape of the cushion member 42 in plan view matches the shape of the upper end surface of the upper end portion 40D of the cylindrical portion 40A. Therefore, the cushion member 42 includes an annular portion 42A that frames the upper end surface of the eight vertical plates 43 in the cylindrical portion 40A, and an upper Z1 that protrudes from the annular portion 42A and is attached to the first flange portion 43B or the second flange portion 43D, respectively. It integrally has a plurality of protrusions 42B overlapping with each other. The protruding part 42B overlapping the first flange part 43B is formed with an insertion hole 42C that penetrates the protruding part 42B in the vertical direction Z and is connected to the insertion hole 43C of the first flange part 43B from the upper side Z1.

The upper end surface of the cushion member 42 is annularly formed by the upper end surface of the annular portion 42A and the upper end surface of each protruding portion 42B. In this embodiment, the upper end surface of the cushion member 42 is provided with a slight difference in height by forming a shallow recess 42D in the second flange portion 43D and its surrounding area, but the upper end surface of the cushion member 42 is The entire area may be flush and flat.

The cover 40 as described above is attached to the lower surface portion 3E of the bottom wall 3B of the outer tank 3 from the lower side Z2, as shown in FIG. Specifically, in the lower surface portion 3E, although a plurality of ribs 3G are provided in the outer peripheral region 3F, the central region 3H surrounded by the outer peripheral region 3F is relatively flat, and the upper end portion of the cylindrical portion 40A of the cover 40 40D is attached to this central region 3H. In this state, the upper end surface of the upper end portion 40D of the cylindrical portion 40A, that is, the upper end surface of each of the vertical plates 43, the first flange portion 43B, and the second flange portion 43D, extends from the lower side Z2 with respect to the lower surface portion 3E. They are arranged opposite to each other and are compressed with the cushion member 42 sandwiched between them and the lower surface portion 3E. As a result, the gap between the upper end 40D of the cylindrical portion 40A and the lower surface 3E is closed by the cushion member 42 disposed between them.

One bolt B is inserted into each insertion hole 43C of the first flange portion 43B from the lower side Z2, passes through the insertion hole 42C of the cushion member 42, and is assembled to the bottom wall 3B. Thereby, the cover 40 is in a state fixed to the bottom wall 3B. Further, in the cover 40, the cylindrical portion 40A surrounds the driving portion 32 from the outside in the lateral direction, specifically the radial direction R, without contact, and the closing portion 40C surrounds the driving portion 32 from the lower side Z2 in a non-contact manner. Covered by contact. That is, the drive unit 32 is arranged in the internal space 40B of the cover 40. Therefore, the inner surface 40E of the cover 40 that partitions the internal space 40B faces the drive section 32 through the sound insulation member 41 (see FIG. 1).

As described above, in the cover 40, the cylindrical portion 40A surrounds the driving portion 32 disposed on the lower side Z2 of the bottom wall 3B of the outer tank 3, and the closing portion 40C surrounds the driving portion 32 disposed in the cylindrical portion 40A. The inner space 40B is closed from the lower side Z2, and the upper end 40D of the cylindrical portion 40A is attached to the lower surface 3E of the bottom wall 3B. Therefore, the cover 40 covers the drive section 32 in a substantially hermetically sealed state. Further, a sound insulating member 41 is attached to the inner surface 40E of the cover 40. Thereby, the operating sound of the drive unit 32 inside the cover 40 can be prevented from leaking to the outside.

In order to ensure the necessary sound insulation properties, the hardness of the sound insulation member 41 as measured by durometer type A is preferably A95 or higher. The sound insulating member 41 having this hardness is difficult to deform. However, as described above, if the inner surface 40E is composed of a plurality of flat surfaces, the inner surface 40E can be easily attached to the inner surface 40E without deforming the sound insulating member 41, compared to the case where the inner surface 40E is composed of a curved surface. Can be installed securely. Further, the cushion member 42 disposed between the cylindrical portion 40A and the lower surface portion 3E of the bottom wall 3B of the outer tank 3 can prevent the cover 40 from shaking. Moreover, the combination of the cover 40 and the sound insulation member 41 can improve the sound insulation performance, especially for low and medium frequency operating sounds of 500 Hz or less.

In this way, the cover 40 is a sound insulating cover that blocks the operating noise of the drive unit 32. The cover 40 also functions as a general motor cover. When transporting the vertical washing machine 1, a protective material made of, for example, styrene foam (not shown) is attached to the inside of the casing 2 through an opening 2B (see FIG. 1) formed at the bottom of the casing 2. The cover 40, which functions as a motor cover, positions the protective material so that it does not come into contact with the drive section 32 or the outer tank 3.

This invention is not limited to the embodiments described above, and various changes can be made within the scope of the claims.

For example, the cover 40 may be formed with a hole or a notch for passing the drainage channel 22 or wiring (not shown). However, it is preferable that the gaps around the drain channel 22 and the wiring be filled with a sealing material (not shown) such as a sponge so that the operating sound of the drive unit 32 does not leak through these holes and notches.

Although the cover 40 has an octagonal cylindrical shape in the embodiment described above, it may have another polygonal cylindrical shape such as a hexagonal cylindrical shape. Further, the inner surface of the cylindrical portion 40A of the cover 40 may be formed of a plurality of flat surfaces, and the outer surface of the cylindrical portion 40A may be a circumferential surface.

Further, in the embodiment described above, the axis J, which is the center of rotation of the inner tank 4, extends vertically in this embodiment, but it may be arranged at an angle with respect to the vertical direction.

1 Vertical washing machine 3 Outer tub 3B Bottom wall 3C Annular wall 3E Lower surface 4 Inner tub 7 Motor 18 Entrance/exit 32 Drive section 40 Cover 40A Cylindrical section 40B Internal space 40C Closure section 40D Upper end 40E Inner surface 41 Sound insulation member 42 Cushion member Q Laundry Z2 Lower side

Claims (3)

an inner tub that accommodates laundry and can be rotated;
an outer tank accommodating the inner tank, the outer tank having an upper end formed with an entrance for taking laundry in and out of the inner tank, and a lower end provided with a bottom wall;
a drive section that includes at least a motor that generates a driving force to rotate the inner tank, and is disposed below the bottom wall;
a cover having a cylindrical part that has an upper end attached to a lower surface of the bottom wall and surrounds the drive part; and a closing part that closes an internal space of the cylindrical part from below;
a sound insulating member attached to an inner surface of the cover facing the drive unit ;
The vertical washing machine includes an annular cushion member that closes a gap between the cylindrical portion and the lower surface portion and surrounds the central axis of the inner tub . The vertical washing machine according to claim 1, wherein the inner surface of the cover is constituted by a plurality of flat surfaces. The vertical washing machine according to claim 1 or 2, wherein an insertion hole into which a bolt for fixing the cover to the bottom wall is inserted is formed in the cushion member .

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