TW201943919A - Washing machine - Google Patents

Abstract

A washing machine (1) is provided with a first washing tub (110) and a second washing tub (210). The first washing tub (110) is supported rotatably about a first rotational axis (114). The second washing tub (210) is supported rotatably about a second rotational axis (214). The second washing tub (210) is disposed over the first washing tub (110). A first inclination angle ([Theta]1) of the first rotational axis (114) with respect to a horizontal direction (A) is greater than a second inclination angle ([Theta]2) of the second rotational axis (214) with respect to the horizontal direction (A).

Description

washing machine

The present invention relates to a washing machine.

The washing machine described in Patent Document 1 includes a machine body. Inside the body, a first washing inner tub and a second washing inner tub are provided. The rotation axis of the first washing inner tub is parallel to the rotation axis of the second washing inner tub. An outer tub is provided outside the first and second washing inner tubs. The body includes a rack and a panel. The outer bucket is fixed on the rack. A hanging spring is provided on the upper part of the outer bucket. A damping device is provided at the bottom of the outer bucket. A tension spring is provided in the middle of the outer tub.

Patent Document 1: Chinese Patent Application Publication No. 103850085.

However, in a state where the rotation axis of the first washing inner tub and the rotation axis of the second washing inner tub are parallel to each other, the first washing inner tub and the second washing inner tub are aligned in the vertical direction. Therefore, the size of the body (box) in the vertical direction becomes large. Moreover, in order to be able to install a washing machine in various places, it is desirable to make the cabinet of a washing machine compact.

An object of the present invention is to provide a washing machine capable of making a cabinet compact.

According to a first aspect of the present invention, the washing machine includes a first washing tub and a second washing tub. The first washing tub is rotatably supported around a first rotation axis. The second washing tub is rotatably supported around the second rotation shaft. The second washing tank is disposed above the first washing tank. A first inclination angle of the first rotation axis with respect to the horizontal direction is larger than a second inclination angle of the second rotation axis with respect to the horizontal direction.

According to the present invention, it is possible to make a cabinet of a washing machine provided with a plurality of sinks compact.

An embodiment of the present invention will be described with reference to the drawings. In addition, the same reference numerals are given to the same or corresponding parts, and the descriptions thereof are not repeated.

[First Embodiment]
A washing machine 1 according to a first embodiment of the present invention will be described with reference to Figs. 1 and 2. Fig. 1 is a front view of a washing machine 1 according to a first embodiment. Fig. 2 is a side view of the washing machine 1 according to the first embodiment. In FIGS. 1 and 2, the vertical direction is a direction parallel to the vertical plane. Each of the left-right direction and the front-back direction is a direction parallel to the horizontal plane. The left-right direction is a direction perpendicular to the front-rear direction. The washing machine 1 is configured to wash the laundry in a state where the washing machine 1 is placed in a posture shown in FIGS.

As shown in FIGS. 1 and 2, the washing machine 1 includes a cabinet 10, a first door 20, and a second door 30.

The case 10 has a hollow shape. The cabinet 10 includes a front surface portion 11, a pair of side surface portions 12, a rear surface portion 13, a top surface portion 14, and a bottom portion 15. Each of the front portion 11, the pair of side portions 12, the back portion 13, the top portion 14, and the bottom portion 15 has a plate shape. Each of the front portion 11, the pair of side portions 12, the back portion 13, the top portion 14, and the bottom portion 15 forms the outer surface of the box 10.

The front portion 11 indicates a portion located in the front portion of the case 10 among the cases 10. The pair of side portions 12 indicate portions of the case 10 that are located on the side of the case 10. The pair of side portions 12 are arranged at intervals from each other in the left-right direction. The back surface portion 13 indicates a portion of the casing 10 that is located at a rear portion of the casing 10. The top surface portion 14 indicates a portion located on the upper portion of the casing 10 among the casings 10. The bottom 15 indicates a portion of the box 10 that is located at a lower portion of the box 10.

The first door 20 and the second door 30 are provided at the front of the cabinet 10. The first door 20 and the second door 30 are rotatably attached to the front portion 11. The first door 20 and the second door 30 separate the inside of the cabinet 10 and the outside of the cabinet 10. The inside of the cabinet 10 indicates a space surrounded by the front surface portion 11, the pair of side surface portions 12, and the rear surface portion 13.

The first door 20 and the second door 30 are arranged so as to be aligned in the vertical direction. The second door 30 is disposed above the first door 20.

The washing machine 1 further includes a water supply port 40. The water supply port 40 is provided on the upper portion of the casing 10. The water supply port 40 is connected to a water plug. The water discharged from the water plug is supplied to the washing machine 1 through the water supply port 40.

Next, the washing machine 1 will be further described with reference to FIG. 3. FIG. 3 is a sectional view of the washing machine 1.

As shown in FIG. 3, the washing machine 1 includes a first washing section 100 and a second washing section 200. Each of the first washing unit 100 and the second washing unit 200 can wash the laundry independently of each other. The second washing unit 200 is disposed above the first washing unit 100.

First, the first washing unit 100 will be described.

As shown in FIG. 3, the first washing unit 100 includes a first washing tank 110 and a first water tank 120. Each of the first washing tank 110 and the first water tank 120 is disposed inside the cabinet 10. The first washing tank 110 is disposed inside the first water tank 120.

The first washing tank 110 includes a first side portion 111, a first bottom portion 112, and a first opening portion 113. The first side portion 111 has a cylindrical shape whose front and rear ends are open. The first bottom portion 112 is provided at a rear end portion of the first side portion 111. The first bottom portion 112 blocks a rear end portion of the first side portion 111. The first opening portion 113 is formed at a front end portion of the first side portion 111. The first opening portion 113 communicates with the inside of the first washing tank 100 and the outside of the first washing tank 110. The first opening portion 113 faces the first door 20. The inside of the first washing tub 110 represents a space surrounded by the first side portion 111 and the first bottom portion 112.

The first washing tank 110 further includes a first rotation shaft 114. The first washing tub 110 is rotatably supported around the first rotation shaft 114. The first rotation axis 114 indicates an axis passing through the center of the first bottom portion 112 and the center of the first opening portion 113.

When the first door 20 is opened, the first opening portion 113 faces the outside of the cabinet 10. As a result, the user can take out and put the laundry into the first washing tub 110 through the first opening 113.

The washing machine 1 further includes a first driving unit 130. The first driving unit 130 includes a first motor 131 and a first output shaft 132. The first output shaft 132 is connected to the first washing tank 110. The first output shaft 132 rotatably supports the first washing tub 110 around the first rotation shaft 114. The first motor 131 transmits power to the first washing tub 110 via the first output shaft 132. As a result, the first washing tub 110 rotates around the first rotation shaft 114.

In a state where laundry, water, and lotion are supplied inside the first washing tank 110, when the first washing tank 110 is rotated by the power of the first driving unit 130, the laundry is washed.

The washing machine 1 further includes a first drainage path portion 140. The first drainage path portion 140 is a member for guiding drainage discharged from the inside of the first washing tub 110 to the outside of the washing machine 1. The outside of the washing machine 1 specifically shows the outside of the cabinet 10.

The first drainage path portion 140 includes, for example, a first drainage pipe, a first drainage filter provided in the first drainage pipe, and a first drainage valve. The first drain pipe communicates with the inside of the first washing tub 110 and also communicates with the outside of the washing machine 1.

The first drainage path portion 140 is disposed below a front portion of the first washing tub 110.

Next, the second washing unit 200 will be described.

As shown in FIG. 3, the second washing unit 200 includes a second washing tank 210 and a second water tank 220. Each of the second washing tank 210 and the second water tank 220 is disposed inside the cabinet 10. The second washing tank 210 is disposed inside the second water tank 220.

The second washing tank 210 includes a second side portion 211, a second bottom portion 212, and a second opening portion 213. The second side portion 211 has a cylindrical shape with both front and rear ends open. The second bottom portion 212 is provided at a rear end portion of the second side portion 211. The second bottom portion 212 closes a rear end portion of the second side portion 211. The second opening portion 213 is formed at a front end portion of the second side portion 211. The second opening portion 213 communicates with the inside of the second washing tank 210 and the outside of the second washing tank 210. The second opening portion 213 faces the second door 30. The inside of the second washing tank 210 indicates a space surrounded by the second side portion 211 and the second bottom portion 212.

The second washing tank 210 is disposed above the first washing tank 110.

The second washing tank 210 further includes a second rotation shaft 214. The second washing tub 210 is rotatably supported around the second rotation shaft 214. The second rotation axis 214 indicates an axis passing through the center of the second bottom portion 212 and the center of the second opening portion 213.

When the second door 30 is opened, the second opening portion 213 faces the outside of the cabinet 10. As a result, the user can take out and put laundry in and out of the second washing tank 210 through the second opening portion 213.

The washing machine 1 further includes a second driving unit 230. The second driving unit 230 includes a second motor 231 and a second output shaft 232. The second output shaft 232 is connected to the second washing tank 210. The second output shaft 232 rotatably supports the second washing tub 210 around the axis of the second rotation shaft 214. The second motor 231 transmits power to the second washing tank 210 via the second output shaft 232. As a result, the second washing tank 210 rotates around the second rotation shaft 214.

The washing machine 1 further includes a second drainage path section 240. The second drainage path portion 240 is a member for guiding drainage discharged from the inside of the second washing tank 210 to the outside of the washing machine 1.

The second drainage path portion 240 includes, for example, a second drainage pipe, a second drainage filter provided in the second drainage pipe, and a second drainage valve. The second drain pipe communicates with the inside of the second washing tub 210 and also communicates with the outside of the washing machine 1.

The second drainage path portion 240 is disposed between the rear portion 115 of the first washing tank 110 and the rear portion 215 of the second washing tank 210 (see FIG. 4).

In addition, each of the first washing unit 100 and the second washing unit 200 can perform a washing operation, a washing operation, a dehydration operation, and a drying operation.

Next, the first washing tank 110 and the second washing tank 210 will be described with reference to FIG. 4. FIG. 4 is a schematic diagram of the washing machine 1.

FIG. 4 shows a first tilt angle θ1 and a second tilt angle θ2. The first inclination angle θ1 indicates an inclination angle of the first rotation shaft 114 with respect to the horizontal direction A. The second inclination angle θ2 indicates an inclination angle of the second rotation axis 214 with respect to the horizontal direction A. The horizontal direction A is parallel to the horizontal plane and indicates a direction toward the front.

In FIG. 4, the direction in which the tip of the arrow indicating the horizontal direction A is rotated clockwise around the base end is set to the positive direction (“+” in FIG. 4). In FIG. 4, the direction in which the tip of the arrow showing the horizontal direction A is rotated counterclockwise around the base end is set to a negative direction (“−” in FIG. 4).

When each of the first rotation axis 114 and the second rotation axis 214 is inclined in a positive direction with respect to the horizontal direction A, each of the first inclination angle θ1 and the second inclination angle θ2 is larger than the angle 0 °.

In contrast, when each of the first rotation axis 114 and the second rotation axis 214 is tilted in a negative direction with respect to the horizontal direction A, each of the first tilt angle θ1 and the second tilt angle θ2 is smaller than the angle. 0˚.

As shown in FIG. 4, the first tilt angle θ1 is larger than the second tilt angle θ2 (the first tilt angle θ1> the second tilt angle θ2). Therefore, the rear portion 215 of the second washing tank 210 can be disposed separately from the rear portion 115 of the first washing tank 110. As a result, a second space B2 for arranging the second drainage path portion 240 can be secured between the rear portion 115 of the first washing tank 110 and the rear portion 215 of the second washing tank 210.

In the first embodiment, in order to ensure the second space B2, the entire second washing tank 210 is not separated from the first washing tank 110, and only the rear portion 215 of the second washing tank 210 is separated from the first washing tank 110. In other words, in the first embodiment, in order to ensure the second space B2, the second rotation axis 214 is not moved parallel to the first rotation axis 114 upward from the state where the first rotation axis 114 and the second rotation axis 214 are parallel to each other. The inclination angle of the second rotation shaft 214 with respect to the first rotation shaft 114 is changed. Therefore, as compared with the case where the second rotation shaft 214 is moved in parallel upward, it is possible to suppress an increase in the dimension H of the cabinet 10 in the vertical direction. As a result, the cabinet 10 of the washing machine 1 can be made compact.

Next, the first washing tank 110 will be described with reference to FIG. 4.

As shown in FIG. 4, the first tilt angle θ1 is larger than the angle 0 ° (the first tilt angle θ1> the angle 0 °). In the first embodiment, the first tilt angle θ1 is, for example, an angle of approximately 8 °. Therefore, the first opening portion 113 of the first washing tank 110 is arranged upward from the horizontal direction A. As a result, the user can easily perform the first operation of taking out and placing the laundry in and from the first washing tank 110. The reason is because the user usually performs the first operation by looking down at the first washing tank 110.

In addition, since the first inclination angle θ1 is larger than the angle 0 °, the front portion 116 of the first washing tank 110 can be disposed separately from the bottom portion 15 of the cabinet 10. As a result, the first space B1 for arranging the first drainage path portion 140 can be secured between the front portion 116 and the bottom portion 115 of the first washing tank 110.

Next, the second washing tank 210 will be described with reference to FIG. 4.

As shown in FIG. 4, the second tilt angle θ2 is equal to or less than 0 ° (the second tilt angle θ2 ≦ the angle 0 °). In the first embodiment, the second inclination angle θ2 is an angle of substantially 0 ° (the second inclination angle θ2 ≒ 0 °). Therefore, in the first embodiment, the second opening portion 213 of the second washing tank 210 is disposed so as to face the substantially horizontal direction A. As a result, the user can easily perform the second operation of taking out and placing the laundry in and from the second washing tank 210. The reason is that the user usually performs the second operation with the line of sight of approximately the same height as the second washing tank 210.

When the second inclination angle θ2 is approximately 0 °, the second washing tank 210 is installed substantially horizontally. When the second washing tank 210 is set to be substantially horizontal, the vibration of the second washing tank 210 can be easily controlled. Therefore, when the washing machine 1 operates, it is possible to suppress the upper part of the washing machine 1 from being shaken due to the vibration of the second washing tub 210. As a result, when the washing machine 1 is operated, the posture of the washing machine 1 can be made more stable.

When the second inclination angle θ2 is smaller than the angle 0 ° (the second inclination angle θ2 <the angle 0 °), the second opening portion 213 of the second washing tank 210 is disposed further downward than the horizontal direction A. In this case, the second inclination angle θ2 is, for example, −2 °, and the second side portion 211 of the second washing tank 210 is inclined further downward than the horizontal direction A. Therefore, when the laundry is washed in the second washing tank 210, the laundry in the second washing tank 210 moves forward due to the weight of the laundry and comes into contact with the second door 30. As a result, since the second washing tank 210 can contact the laundry with the second door 30 and rotate with the second washing tank 210 at the same time, the dirt of the laundry can be effectively removed.

When the second inclination angle θ2 is smaller than the angle 0 °, unevenness may be formed on the inner surface 31 of the second door 30. As a result, since the laundry can be brought into contact with the unevenness of the second door 30 and rotated, the soiling of the laundry can be more effectively removed by the so-called washer effect.

Furthermore, in the first embodiment, although the first inclination angle θ1 of the first washing tub 110 is larger than the angle 0 °, the present invention is not limited to this. The first inclination angle θ1 of the first washing tank 110 may be an angle of 0 °. As a result, the vibration of the first washing tank 110 can be controlled more easily, and the vibration of the first washing tank 110 can be suppressed. In this case, the second inclination angle θ2 of the second washing tank 210 is smaller than the angle 0 °. In this case, the second inclination angle θ2 of the second washing tank 210 is set to an angle of -2 °, for example.

[Second Embodiment]
A washing machine 1 according to a second embodiment of the present invention will be described with reference to Figs. 5 and 6. Fig. 5 is a side view of a washing machine 1 according to a second embodiment. FIG. 6 is a schematic diagram of the washing machine 1.

In the first embodiment, the back surface portion 13 is formed into a substantially flat shape. In contrast, the second embodiment is different from the first embodiment in that the back surface portion 13 is formed into a shape having irregularities. In the following, points different from the first embodiment will be mainly described.

As shown in FIGS. 5 and 6, the case 10 includes a first case portion 10 a and a second case portion 10 b. The first case portion 10 a indicates a lower portion of the case 10. The first case portion 10 a receives the first washing tank 110. The second case portion 10 b indicates an upper portion of the case 10. The second tank portion 10b houses a second washing tank 210.

The back surface part 13 covers the first washing tank 110 and the second washing tank 210 from the rear. An upper portion of the back surface portion 13 is recessed forward than a lower portion of the back surface portion 13.

The back surface portion 13 includes a first back surface portion 13 a and a second back surface portion 13 b.

The first back surface portion 13 a is a lower portion of the back surface portion 13. The first back surface portion 13 a is disposed behind the first washing tub 110.

The second back surface portion 13 b is an upper portion of the back surface portion 13. The second back surface portion 13 b is disposed behind the second washing tank 210. The second back surface portion 13b is located forward of the first back surface portion 13a.

The back surface portion 13 further includes a recessed portion 13 c. The recessed portion 13c is formed in at least a part of the second back surface portion 13b. The recessed portion 13c is recessed forward than the first back surface portion 13a. In the second embodiment, the recessed portion 13c is formed on the entire second back surface portion 13b. Therefore, in the second embodiment, the entire second back surface portion 13b is located forward of the first back surface portion 13a.

When the recessed portion 13 c is formed on the back surface portion 13, the volume of the second case portion 10 b becomes smaller than the volume of the first case portion 10 a. Therefore, the projected area of the second case portion 10b with respect to the placement surface D is smaller than the projected area of the first case portion 10a with respect to the placement surface D. As a result, since the size of the upper portion is smaller than the size of the lower portion of the washing machine 1, the washing machine 1 can be stably installed. Furthermore, it is possible to prevent the posture of the washing machine 1 from being unstable due to the vibration of the washing machine 1. The mounting surface D indicates a surface on which the washing machine 1 is mounted.

The back surface portion 13 also has a recessed space C. The recessed space C indicates a portion located forward of the first back surface portion 13 a among the spaces located at the rear portion of the second back surface portion 13 b. The recessed space C is located at the rear of the recessed portion 13c. By forming the recessed portion 13c with respect to the second back surface portion 13b, a recessed space C is generated.

A water plug can be arranged in the recessed space C. The water plug is provided on the wall surface, and supplies water to the washing machine 1. Therefore, by arranging the water plug in the recessed space C, it is possible to prevent the water plug from contacting the second back surface portion 13b, and to arrange the first back surface portion 13a close to the wall surface. As a result, since the washing machine 1 can be arranged close to the wall surface, an increase in the installation space of the washing machine 1 can be suppressed.

Furthermore, in the second embodiment, the recessed portion 13c is formed on the entire second back surface portion 13b. However, the recessed portion 13c may be formed in a part of the second back surface portion 13b. For example, in the second back surface portion 13b, a recessed portion 13c may be formed only in a portion facing the water plug.

Next, the principle for forming the recessed space C will be described with reference to FIG. 6.

As shown in FIG. 6, the size β1 in the front-rear direction of the second washing tank 210 is shorter than the size α1 in the front-rear direction of the first washing tank 110 (size β1 <size α1). Therefore, the rear portion 215 of the second washing tank 210 is disposed forward of the rear portion 115 of the first washing tank 110. As a result, the second back surface portion 13b can be disposed forward of the first back surface portion 13a to form a recessed space C.

In the first embodiment, the size β2 of the second washing tank 210 is smaller than the size α2 of the first washing tank 110 (size β2 <size α2). Therefore, the second washing tank 210 is smaller than the first washing tank 110. As a result, the recessed space C can be formed more reliably. The size α2 of the first washing tub 110 is, in detail, the size of the first washing tub 110 along the first rotation axis 114. The size β2 of the second washing tank 210 is, in detail, the size of the second washing tank 210 along the second rotation axis 214.

The size β2 of the second washing tank 210 may be the same as the size α2 of the first washing tank 110 (size β2 = size α2). That is, the size of the second washing tank 210 may be the same as that of the first washing tank 110. In this case, since the first inclination angle θ1 is larger than the second inclination angle θ2 (the first inclination angle θ1> the second inclination angle θ2), the size β1 of the second washing tank 210 can be made larger than that of the first washing tank 110 α1 is small (size β1 <size α1).

[Third Embodiment]
A washing machine 1 according to a third embodiment of the present invention will be described with reference to FIG. 7. Fig. 7 is a side view of a washing machine 1 according to a third embodiment.

The third embodiment is different from the second embodiment in that the unevenness on the side surface of the washing machine 1 is suppressed. In the following, points which are different from the second embodiment will be mainly described.

As shown in FIG. 7, the washing machine 1 further includes a pair of cover portions 50.

Each of the pair of cover portions 50 is a flat plate-shaped member. The pair of cover portions 50 are respectively fixed to the pair of side surface portions 12. The cover portion 50 may be formed on one component as a part of the member of the side surface portion 12.

The pair of cover portions 50 face each other at intervals in the left-right direction. Hereinafter, description will be made focusing on one of the pair of cover portions 50.

The cover portion 50 faces from the side with respect to the recessed portion 13c. The cover portion 50 covers the recessed space C from the side. The rear portion 51 of the cover portion 50 extends vertically along the first back surface portion 13a. Therefore, when the washing machine 1 is viewed from the side, the unevenness of the back surface portion 13 caused by the recessed portion 13 c can be hidden by the cover portion 50. As a result, the appearance of the washing machine 1 can be improved when the washing machine 1 is viewed from the side.

The embodiments of the present invention have been described above with reference to the drawings (FIGS. 1 to 7). However, the present invention is not limited to the embodiment described above, and can be implemented as a fourth embodiment in various aspects as long as it does not deviate from the gist thereof (for example (1)). In addition, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-mentioned embodiments. For example, several constituent elements may be deleted from all the constituent elements shown in the embodiment. A drawing is a schematic representation of each component as a main body for ease of understanding. Therefore, the number of each component shown in the drawing may be created according to the drawing and may be different from the actual situation. In addition, each component shown in the said embodiment is an example, It does not specifically limit, Various changes can be made in the range which does not deviate substantially from the effect of this invention.

(1) Each of the first rotating shaft 114 and the second rotating shaft 214 may be horizontally arranged so as to extend in the front-back direction, and the size β1 of the second washing tank 210 in the front-back direction is shorter than the first washing tank 110. The dimension α1 in the front-rear direction (dimension β1 <dimension α1) (see FIG. 6). As a result, the rear portion 215 of the second washing tank 210 can be disposed forward of the rear portion 115 of the first washing tank 110 to form a recessed space C.

The invention can be used in the field of washing machines.

1‧‧‧washing machine

10a‧‧‧First Box

10b‧‧‧Second cabinet

13‧‧‧back

13a‧‧‧First back

13b‧‧‧Second back

13c‧‧‧Depression

50‧‧‧ cover

110‧‧‧first sink

114‧‧‧first rotation axis

140‧‧‧First drainage path section

210‧‧‧Second Sink

214‧‧‧Second rotation axis

240‧‧‧Second drainage path section

A‧‧‧Horizontal

D‧‧‧mounting surface

θ1‧‧‧First tilt angle

θ2‧‧‧Second tilt angle

Fig. 1 is a front view of a washing machine according to a first embodiment.

Fig. 2 is a side view of the washing machine according to the first embodiment.

Fig. 3 is a sectional view of a washing machine.

FIG. 4 is a schematic diagram of a washing machine.

Fig. 5 is a side view of a washing machine according to a second embodiment.

FIG. 6 is a schematic diagram of a washing machine.

Fig. 7 is a side view of a washing machine according to a third embodiment.

Claims (7)

A washing machine includes a first washing tank rotatably supported around a first rotation shaft and a second washing tank rotatably supported around a second rotation shaft, characterized in that: The second washing tank is arranged above the first washing tank; A first inclination angle of the first rotation axis with respect to the horizontal direction is larger than a second inclination angle of the second rotation axis with respect to the horizontal direction. For example, the washing machine of the first patent application range, wherein the first tilt angle is greater than 0 °; This second tilt angle is 0 ° or less. For example, the size of the second washing tank in the front-rear direction is shorter than the size of the first washing tank in the front-rear direction. For example, the washing machine according to any one of claims 1 to 3 further includes a box housing the first washing tank and the second washing tank; The cabinet includes: A first back surface portion disposed behind the first washing tank; A second back surface portion disposed behind the second washing tank; and A recessed portion formed in at least a portion of the second back surface portion; The recessed portion is recessed forward compared to the first back surface portion. For example, the washing machine according to claim 4 further includes a cover portion facing from the side with respect to the recessed portion. For example, for a washing machine with a patent scope of item 4 or 5, the cabinet includes: A first case body housing the first washing tank; and A second cabinet part, which houses the second washing tank; A projection area of the second box portion with respect to a mounting surface on which the box is mounted is smaller than a projection area of the first box portion with respect to the mounting surface. If the patent application is for a washing machine in any one of items 1 to 6, it also includes: A first drainage path portion that guides drainage discharged from the first washing tub to the outside of the washing machine; and A second drainage path section that guides drainage discharged from the second washing tub to the outside of the washing machine; The first drainage path portion is disposed below a front portion of the first washing tank; The second drainage path portion is disposed between a rear portion of the first washing tank and a rear portion of the second washing tank.