JP2024043607A - washing machine - Google Patents

Abstract

[Problem] To provide a washing machine that can easily load and unload laundry without reducing the amount of wash water or rinse water that can be stored in the water tub. [Solution] The washing machine includes a water tub with a water tub opening having a perfect circular planar shape, a drum with a drum opening having a perfect circular planar shape and concentric with the water tub opening, housed in the water tub, a housing with a housing opening having a flattened circular planar shape formed by flattening the lower part of the perfect circular planar shape and concentric with the water tub opening, and a door packing that connects the housing and the water tub watertightly, has a door packing opening, and the housing side of the door packing opening has a flattened circular shape formed by flattening the lower part of the perfect circular planar shape and is concentric with the water tub opening. [Selected Figure] Figure 4

Description

The present disclosure relates to washing machines.

In a drum-type washing machine, the drum is housed in a water tub. Furthermore, laundry is removed from inside the drum through an opening in the drum and an opening in the water tub. For this reason, it is desirable to increase the diameter of the opening in the water tub to make it easier to remove the laundry. However, if the diameter of the opening in the water tub is increased, the amount of water that can be stored in the water tub decreases. This reduces the washing performance of the drum-type washing machine.

Patent Document 1 discloses a drum-type washing machine. In this drum-type washing machine, the center position of the laundry inlet and outlet of the water tub is offset upward from the center of rotation of the rotating drum. This allows a wide range of views of the inside of the rotating drum (paragraphs 0013 and 0015).

Japanese Patent No. 4368661

In the washing machine disclosed in Patent Document 1, a trap prevention protrusion must be provided to prevent laundry from getting caught between the water tub and the rotating drum (paragraphs 0017-0018). In addition, the diameter of the laundry inlet/outlet must be smaller than the opening diameter of the rotating drum, which makes it difficult to easily remove laundry.

The present disclosure has been made in consideration of these problems. One aspect of the present disclosure aims to provide a washing machine that can easily load and unload laundry without reducing the amount of wash water or rinse water that can be stored in the water tub, for example.

A washing machine according to one aspect of the present disclosure includes a water tank in which a water tank opening having a perfectly circular planar shape is formed, and a drum opening having a perfectly circular planar shape and arranged concentrically with the water tank opening, a drum accommodated in the aquarium, a casing having a flat circular planar shape with a flattened lower part of a perfect circular planar shape and a casing opening disposed concentrically with the aquarium opening; A casing and the water tank are connected in a watertight manner, and a door packing opening is formed, and the casing side of the door packing opening has a flat circular shape with a flattened lower part of a perfect circular planar shape, and is connected to the water tank opening. A door packing arranged concentrically.

FIG. 2 is a perspective view illustrating the washing machine of the first embodiment with the door closed; FIG. 1 is a perspective view schematically illustrating a state in which the door of the washing machine according to the first embodiment is opened. 1 is a cross-sectional view illustrating a washing machine according to a first embodiment; 2 is an exploded perspective view illustrating a part of a water tub, a drum, a part of a housing, and a door gasket of the washing machine according to the first embodiment; FIG. It is a front view schematically illustrating a part of a water tank with which a washing machine of a 1st embodiment is equipped. FIG. 2 is a front view schematically illustrating a drum included in the washing machine of the first embodiment. FIG. 2 is a front view schematically illustrating a part of the casing included in the washing machine of the first embodiment. FIG. 2 is a rear view schematically illustrating a door packing provided in the washing machine of the first embodiment. FIG. 2 is a front view schematically illustrating a door packing provided in the washing machine of the first embodiment. 13 is a schematic diagram illustrating an eccentrically arranged housing opening and water tub opening formed in a washing machine of a reference example. FIG. 2 is a diagram illustrating a housing opening and a water tub opening that are concentrically arranged in the washing machine of the first embodiment; FIG. FIG. 3 is a diagram schematically illustrating the outline of a housing opening and a door packing opening formed in the washing machine of the first embodiment on the housing side. FIG. 2 is a perspective view schematically illustrating a door provided in the washing machine of the first embodiment.

Embodiments of the present disclosure will be described below with reference to the drawings. Note that in the drawings, identical or equivalent elements are given the same reference numerals, and duplicate descriptions will be omitted.

1 First Embodiment 1.1 Washing Machine FIG. 1 is a perspective view schematically illustrating a state in which a door of a washing machine according to a first embodiment is closed. FIG. 2 is a perspective view schematically illustrating a state in which the door of the washing machine according to the first embodiment is opened. 1 and 2, along with the washing machine of the first embodiment, arrows indicating the front direction, the rear direction, the left direction, the right direction, the upward direction, and the downward direction are drawn.

The washing machine 1 of the first embodiment shown in Figs. 1 and 2 is a drum-type washing and drying machine that washes laundry and dries the washed laundry. The washing machine 1 may also be a drum-type washing machine that washes laundry.

As shown in Figures 1 and 2, the washing machine 1 includes a housing 11, a door 12, hinges 13, a water supply section 14, a washing section 15, and a drain section 16. The washing machine 1 also includes a drying section (not shown).

The housing 11 accommodates the main parts of the water supply section 14, the washing section 15, the main parts of the drainage section 16, and the drying section. A housing opening 11 a is formed in the housing 11 . The housing 11 has a rectangular parallelepiped shape. The housing opening 11a is formed in the front part of the housing 11.

The door 12 has a plate-like shape. The door 12 has a shape that allows it to close the housing opening 11a.

The hinge 13 rotatably connects the door 12 to the housing 11. This allows the door 12 to rotate about the hinge 13 between a closed position in which the housing opening 11a is blocked and an open position in which the housing opening 11a is not blocked.

Tap water is supplied to the water supply unit 14. The water supply unit 14 contains detergent and fabric softener. The water supply unit 14 dissolves the detergent contained in the supplied tap water to generate wash water, and supplies the generated wash water to the washing unit 15. The water supply unit 14 also supplies the supplied tap water to the washing unit 15 as rinse water. The water supply unit 14 also dissolves the fabric softener contained in the supplied tap water to generate rinse water, and supplies the generated rinse water to the washing unit 15.

Laundry is placed in the washing section 15. The washing section 15 washes the laundry by stirring the loaded laundry and the supplied washing water. Further, the washing section 15 rinses the laundry by stirring the loaded laundry and the supplied rinsing water. Further, the washing section 15 dehydrates the washed laundry or the rinsed laundry.

The drainage section 16 discharges washing water and rinsing water from the washing section 15.

The drying section dries the laundry placed in the washing section 15.

1.2 Water Supply Unit FIG. 3 is a sectional view schematically illustrating the washing machine of the first embodiment. In FIG. 3, arrows indicating the front direction, the rear direction, the upward direction, and the downward direction are drawn together with the washing machine of the first embodiment.

As shown in Figures 1, 2, and 3, the water supply unit 14 includes a water supply port 21, a water supply valve 22, and a detergent case 23. The water supply unit 14 also includes a water supply duct (not shown).

Tap water is supplied to the water supply port 21 .

The water supply valve 22 can be in an open state, which allows tap water supplied to the water supply port 21 to pass through, or in a closed state, which does not allow the tap water to pass through.

The water supply duct guides tap water that has passed through the water supply valve 22 to the detergent case 23.

The detergent case 23 stores detergent and softener. The detergent case 23 generates wash water by dissolving the detergent contained in the tap water led through the water supply duct, and supplies the generated wash water to the washing section 15. Further, the detergent case 23 supplies the tap water led through the water supply duct to the washing section 15 as rinsing water. Further, the detergent case 23 generates rinse water by dissolving the softener contained in the tap water led through the water supply duct, and supplies the generated rinse water to the washing section 15.

1.3 Washing Section As shown in FIG. 3, the washing section 15 includes a water tub 31, a drum 32, a drum motor 33 and a door gasket .

The water tub 31 stores the wash water or rinse water supplied to the washing section 15. The water tub 31 has a cylindrical shape with a bottom. Therefore, a water tub opening 31a is formed in the water tub 31. The central axis 31c of the water tub 31 is inclined at 5 to 30 degrees from the horizontal direction. The water tub opening 31a is located above and in front of the bottom of the water tub 31. The water tub opening 31a faces the housing opening 11a.

The drum 32 accommodates the laundry placed in the washing section 15. The drum 32 has a cylindrical shape with a bottom. Therefore, a drum opening 32a is formed in the drum 32. The drum 32 is accommodated in the water tub 31. The central axis of the drum 32 coincides with the central axis 31c of the water tub 31. The drum opening 32a is located at the front upper part of the bottom of the drum 32. The drum opening 32a faces the housing opening 11a and the water tub opening 31a. A number of holes are formed in the drum 32. This allows washing water or rinsing water to flow between the inside of the drum 32 and the outside of the drum 32 through the holes. This allows washing water or rinsing water to be supplied to the inside of the water tub 31, and the washing water or rinsing water is also supplied to the inside of the drum 32 when washing water or rinsing water is discharged from the inside of the water tub 31.

The drum motor 33 rotates the drum 32 around the central axis of the drum 32, that is, the central axis 31c of the water tank 31.

The door packing 34 connects the housing 11 and the water tank 31 in a watertight manner. The door packing 34 has a ring-shaped planar shape. Therefore, a door packing opening 34a is formed in the door packing 34. The housing side of the door packing 34 is connected to the outer edge surrounding the housing opening 11a, which is a part of the housing 11. The water tank side of the door packing 34 is connected to the outer edge surrounding the water tank opening 31a, which is a part of the water tank 31. As a result, the housing side of the door packing opening 34a is connected to the housing opening 11a. The water tank side of the door packing opening 34a is connected to the water tank opening 31a. The door packing 34 fills the gap between the outer edge surrounding the housing opening 11a and the outer edge surrounding the water tank opening 31a. This makes it possible to prevent washing water or rinsing water from entering between the housing 11 and the water tank 31 via the water tank opening 31a.

The door packing 34 has a bellows-like shape. The door packing 34 is made of an elastic body. For example, the door packing 34 is made of rubber. This allows the door packing 34 to easily deform in response to the movement of the water tub 31. This allows the door packing 34 to maintain the housing side and water tub side of the door packing 34 connected to the housing 11 and water tub 31, respectively, even if the water tub 31 vibrates when the drum motor 33 rotates the drum 32. Therefore, the door packing 34 can maintain the housing 11 and water tub 31 connected in a watertight manner, even if the water tub 31 vibrates when the drum motor 33 rotates the drum 32.

The housing side of the door packing 34 is in close contact with the door 12 when the door 12 is placed in the closed position. Thereby, the housing side of the door packing opening 34a is watertightly closed when the door 12 is placed in the closed position. Thereby, it is possible to suppress the washing water or the rinsing water from leaking to the outside of the housing 11 via the door packing opening 34a.

1, 2 and 3, the drain unit 16 includes a drain hose 41. The drain unit 16 also includes a drain duct and a drain valve, which are not shown.

The drain duct leads wash or rinse water from the washing section 15 to the drain valve.

The drain valve can be in an open state, allowing the wash water or rinse water guided through the drain duct to pass through, or in a closed state, not allowing the wash water or rinse water to pass through.

The drain hose 41 guides the washing water that has passed through the drain valve to the outside of the housing 11.

1.5 Operation of the Washing Machine When the washing machine 1 washes laundry, the water supply section 14 supplies washing water to the water tank 31 and stores the washing water in the water tank 31. Further, while the washing water is stored in the water tank 31, the drum motor 33 rotates the drum 32 at a low speed to agitate the laundry and the washing water. Thereby, the laundry is washed. Further, the drainage section 16 discharges washing water from the water tank 31 after the laundry is washed.

When the washing machine 1 rinses the laundry, the water supply section 14 supplies rinse water to the water tank 31 and stores the rinse water in the water tank 31. Further, while the rinse water is stored in the water tank 31, the drum motor 33 rotates the drum 32 at a low speed to agitate the laundry and the rinse water. This rinses the laundry. Further, the drainage section 16 discharges the rinsing water from the water tank 31 after the laundry is rinsed.

When the washing machine 1 dehydrates the laundry, the drum motor 33 rotates the drum 32 at high speed to remove washing water or rinsing water from the laundry using centrifugal force. This dehydrates the laundry. Further, the water tank 31 receives the removed washing water or rinsing water. Further, the drainage section 16 discharges the received washing water or rinsing water.

1.6 Planar Shape of Opening FIG. 4 is an exploded perspective view schematically illustrating a part of the water tank, a drum, a part of the casing, and a door packing included in the washing machine of the first embodiment.

The front portion of the housing 11 includes a front plate 131 shown in FIG. 4 and a panel 132 shown in FIGS. 1, 2, and 3. The panel 132 is attached to the front surface of the front plate 131. The front plate 131 is made of metal and has high rigidity. The housing side of the door gasket 34 is connected to the front plate 131. The panel 132 is made of resin. An opening that constitutes the housing opening 11a is formed in the front plate 131 and the panel 132.

As shown in FIG. 4, the water tank opening 31a and the drum opening 32a face the housing opening 11a. The housing side of the door packing opening 34a is connected to the housing opening 11a. The water tank side of the door packing opening 34a is connected to the water tank opening 31a.

As a result, when the door 12 is placed in the open position, laundry is inserted into the drum 32 from the outside of the housing 11 via the housing opening 11a, the door packing opening 34a, the water tank opening 31a, and the drum opening 32a. You can put it in. Further, laundry can be taken out from the inside of the drum 32 to the outside of the housing 11 via the drum opening 32a, the water tank opening 31a, the door packing opening 34a, and the housing opening 11a. Therefore, when the sizes of the housing opening 11a, the door packing opening 34a, the water tank opening 31a, and the drum opening 32a are increased, it becomes easier to take laundry in and out. However, when the size becomes smaller, it becomes difficult to put in and take out laundry. Therefore, in order to facilitate the loading and unloading of laundry, it is desirable to increase the size.

On the other hand, the water tank 31 can store washing water or rinsing water up to the lowest point of the water tank opening 31a. Therefore, when the size of the water tank opening 31a increases, the amount of washing water or rinsing water that can be stored decreases. On the other hand, if the size is smaller, the amount of washing or rinsing water that can be stored increases. Therefore, in order to increase the amount of washing or rinsing water that can be stored, it is desirable to reduce the size.

In addition, in order to prevent the wash water or rinse water from leaking outside the housing 11, it is desirable that the lowest points of the housing opening 11a and the door packing opening 34a be located at the same height as the lowest point of the water tub opening 31a or higher than the lowest point of the water tub opening 31a.

Therefore, in the washing machine 1, the water tank opening 31a, the drum opening 32a, the door packing opening 34a, and the case opening The shape of 11a has been devised. This point will be explained below.

FIG. 5 is a front view schematically illustrating a part of the water tank provided in the washing machine of the first embodiment.

As illustrated in FIG. 5, the water tank opening 31a has a perfectly circular planar shape. The aquarium opening 31a has a center on the central axis 31c of the aquarium 31.

Figure 6 is a front view that shows a schematic diagram of a drum provided in a washing machine according to the first embodiment.

As shown in FIG. 6, the drum opening 32a has a planar shape that is a perfect circle. The drum opening 32a has its center on the central axis 31c of the water tub 31. Therefore, the drum opening 32a is concentrically arranged with the water tub opening 31a when viewed from a direction along the central axis 31c of the water tub 31. The drum opening 32a has a diameter smaller than the diameter of the water tub opening 31a.

Figure 7 is a front view that shows a schematic diagram of a portion of the housing of the washing machine of the first embodiment.

As shown in FIG. 7, the housing opening 11a has a flattened circular planar shape obtained by flattening the lower part of a perfect circular planar shape. The contour of the upper part of the flattened circular planar shape coincides with the contour of the upper part of the perfect circular planar shape. However, the contour of the lower part of the flattened circular planar shape is closer to the center of the perfect circular planar shape than the contour of the lower part of the perfect circular planar shape. If the center of the perfect circular planar shape is considered to be the center of the housing opening 11a, the housing opening 11a has a center on the central axis 31c of the water tank 31. Therefore, the housing opening 11a is arranged concentrically with the water tank opening 31a when viewed from the direction along the central axis 31c of the water tank 31. If the diameter of the perfect circular planar shape is considered to be the diameter of the housing opening 11a, the housing opening 11a has a diameter larger than the diameter of the water tank opening 31a.

FIG. 8 is a rear view schematically illustrating the door packing provided in the washing machine of the first embodiment.

As illustrated in FIG. 8, the water tank side 34p of the door packing opening 34a connected to the water tank opening 31a has a perfect circular planar shape, similar to the water tank opening 31a. The water tank side 34p of the door packing opening 34a has its center on the central axis 31c of the water tank 31. Therefore, the water tank side 34p of the door packing opening 34a is arranged concentrically with the water tank opening 31a when viewed from the direction along the central axis 31c of the water tank 31.

FIG. 9 is a front view schematically illustrating a door packing provided in the washing machine of the first embodiment.

As shown in FIG. 9, the housing side 34q of the door packing opening 34a connected to the housing opening 11a has a flat circular shape with a flattened lower part of a perfect circular planar shape, similar to the housing opening 11a. It has a planar shape of The upper contour of the flat circular planar shape matches the upper contour of the perfect circular planar shape. However, the lower contour of the flat circular planar shape is closer to the center of the perfect circular planar shape than the lower contour of the perfect circular planar shape. When the center of the perfect circular planar shape is considered to be the center of the casing side 34q of the door packing opening 34a, the casing side 34q of the door packing opening 34a has its center on the central axis 31c of the water tank 31. Therefore, the housing side 34q of the door packing opening 34a is arranged concentrically with the water tank opening 31a when viewed from the direction along the central axis 31c of the water tank 31.

In the washing machine 1, the planar shape of the water tank opening 31a, the drum opening 32a, and the water tank side 34p of the door packing opening 34a arranged on the rear side is a perfect circle. Moreover, the planar shape of the housing side 34q of the housing opening 11a and the door packing opening 34a arranged on the front side is made into a flat circular shape. Thereby, the size of the housing opening 11a can be increased while raising the height of the lowest point of the water tank opening 31a. Thereby, it is possible to easily take in and out the laundry without reducing the amount of washing water or rinsing water that can be stored in the water tank 31.

In addition, in the washing machine 1, the water tub opening 31a and the drum opening 32a are arranged concentrically and adjacent to each other. This makes it possible to make the gap between the non-rotating water tub 31 and the rotating drum 32 uniform. This makes it possible to prevent laundry from being caught in the gap. This makes it unnecessary to have a structure similar to the anti-trapping protrusions provided in the washing machine disclosed in Patent Document 1.

Figure 10 is a schematic diagram showing the eccentrically arranged housing opening and water tub opening formed in the washing machine of the reference example. Figure 11 is a schematic diagram showing the concentrically arranged housing opening and water tub opening formed in the washing machine of the first embodiment.

In the washing machine of the reference example, as shown in FIG. 10, the housing opening 11a and the water tank opening 31a, which are respectively formed in the housing 11 and the water tank 31 connected by the door packing 34, have a perfect circular planar shape. has. Furthermore, the housing opening 11a and the water tank opening 31a are arranged eccentrically in the vertical direction. In this case, the connection distance D by the door packing 34 is not constant in the vertical direction. That is, the shape of the door packing 34 is not constant in the vertical direction. Therefore, the state in which the water tank 31 is supported by the case 11 and the state in which vibrations are transmitted from the water tank 31 to the case 11 are not constant in the vertical direction. For this reason, the balance of the water tank 31 is likely to collapse. Further, the vibration of the housing 11 tends to have directivity. In addition, the distance between the upper part of the housing opening 11a and the upper part of the aquarium opening 31a (connection distance D), that is, the area of the housing opening 11a that does not face the aquarium opening 31a becomes larger, The upper part does not contribute to making it easy to put in and take out laundry.

In contrast, in the washing machine 1 of the first embodiment, as shown in FIG. 11, the housing opening 11a and the water tub opening 31a are arranged concentrically. In this case, the connection distance D by the door packing 34 is constant from the top to the bottom. That is, the shape of the door packing 34 is constant from the top to the bottom. Therefore, the state of support of the water tub 31 by the housing 11 and the state of transmission of vibration from the water tub 31 to the housing 11 are constant from the top to the bottom. Therefore, the balance of the water tub 31 is unlikely to be lost. In addition, the vibration of the housing 11 is unlikely to become directional. Furthermore, in the region between the top point of the housing opening 11a and the lower center, which is 3/4 or more in the height direction, the distance (connection distance D) between the top of the water tub opening 31a and the housing opening 11a is constant, so that most of the housing opening 11a can face the water tub opening 31a and the drum opening 32a. This prevents the user from realizing that the housing opening 11a is misaligned with the drum opening 32a, allowing them to load and unload laundry without feeling uncomfortable.

1.7 Contours of flattened circular planar shapes Fig. 12 is a diagram illustrating the contours of the housing opening and the door packing opening formed in the washing machine of the first embodiment on the housing side. In Fig. 12, the flatness of the contours is exaggerated.

As shown in FIG. 12, each contour 61 of the housing opening 11a and the housing side 34q of the door packing opening 34a has a first circular arc 71, a second circular arc 72, and a third circular arc 73.

Here, consider the circumference 81 of a first perfect circle having a first radius. The first perfect circle circumference 81 has a first portion 91 and a second portion 92 . The second portion 92 is below the first portion 91.

The first arc 71 is the first portion 91 .

The second arc 72 is located closer to the center 93 of the first perfect circle than the second portion 92 . The second arc 72 may be a perfect circular arc or an elliptical arc. The lowest point of the second circular arc 72 is located, for example, about 10 mm closer to the center 93 than the lowest point of the second portion 92, that is, on the upper side.

A third arc 73 connects the first arc 71 and the second arc 72. The third arc 73 is a portion of the second perfect circle circumference 101 having a second radius smaller than the first radius. The second perfect circle is inscribed in the first circular arc 71 and the second circular arc 72. Thereby, the second perfect circle becomes a connecting circle that can provide the third circular arc 73 that smoothly connects the first circular arc 71 and the second circular arc 72. Since the third circular arc 73 smoothly connects the first circular arc 71 and the second circular arc 72, it becomes easy to bring the casing side of the door packing 34 into close contact with the door 12. Therefore, it becomes easy to close the door packing opening 34a with the door 12 in a watertight manner. For example, both ends of the first arc 71 are connected by a horizontal line that is at the same height as the lowest point required to obtain the required amount of washing or rinsing water that can be stored in the water tank 31. In this case, the amount of washing water or rinsing water can be set to the required amount, but the horizontal line does not connect smoothly to the first circular arc 71. This makes it difficult to watertightly close the door packing opening 34a with the door 12. For this reason, it becomes difficult to suppress leakage of washing water or rinsing water to the outside of the housing 11. Furthermore, since the distance between the second portion 92 of the first perfect circle circumference 81 along the periphery of the water tank opening 31a and the horizontal line changes rapidly near the lower end, vibration absorption by the door packing 34 is uniform. In particular, there is a risk that vibration absorption may not be performed sufficiently in the vicinity of the third arc 73, which is the connection point. On the other hand, when forming a flat part using the second arc 72 and the third arc 73, the distance between the circumference 81 of the first perfect circle and the second portion 92 changes gradually. , concentration of load on a specific location of the door packing 34 can be suppressed.

As shown in FIG. 12, each of the housing opening 11a and the housing side 34q of the door packing opening 34a has a flattened circular shape that is flattened within θ from the lowest point of the planar shape of a perfect circle in the circumferential direction. θ is preferably 30° or more and 90° or less, for example, about 45°. If θ is less than 30°, it may be difficult to sufficiently flatten the parts that have a significant effect on the amount of wash water or rinse water that can be stored. If θ is more than 90°, the size of each of the housing opening 11a and the housing side 34q of the door packing opening 34a becomes small, and it may be difficult to put laundry in and take it out.

1.8 Door FIG. 13 is a perspective view that illustrates a door provided in the washing machine of the first embodiment.

As illustrated in FIG. 13, the door 12 includes a window frame 111 and a transparent window 112.

The window frame 111 has a plate-like shape. An opening is formed in the window frame 111.

Transparent window 112 is attached to window frame 111. The transparent window 112 closes an opening formed in the window frame 111. The transparent window 112 is made of a transparent material, for example, glass. Thereby, the inside of the drum 32 can be visually recognized from the outside of the housing 11 through the transparent window 112.

When the door 12 is in the closed position, the transparent window 112 is in the closed position blocking the housing opening 11a. On the other hand, when the door 12 is in the open position, the transparent window 112 is in the open position not blocking the housing opening 11a. Therefore, the transparent window 112 is movable between the closed position blocking the housing opening 11a and the open position not blocking the housing opening 11a.

As illustrated in FIG. 13, the transparent window 112 includes a functional section 121, a seal section 122, and a connecting section 123.

The functional part 121 protrudes from the seal part 122 and the connecting part 123. The functional section 121 is arranged at a position where the drum opening 32a is arranged when the transparent window 112 is arranged in the closed position. Therefore, the functional section 121 projects toward the inside of the drum 32 via the drum opening 32a when the transparent window 112 is placed in the closed position. The amount of protrusion of the functional part 121 increases from the top to the bottom. Thereby, the functional unit 121 guides the laundry falling from above to below in a direction toward the bottom of the drum 32. Thereby, the functional unit 121 suppresses the laundry from flying out. Further, the functional unit 121 promotes the replacement of laundry inside the drum 32. The functional portion 121 has a perfect circular planar shape, similar to the drum opening 32a.

The sealing portion 122 surrounds the functional portion 121. The sealing portion 122 is disposed in a position facing the housing side of the door packing 34 when the transparent window 112 is disposed in the closed position. Therefore, the sealing portion 122 adheres closely to the door packing 34 when the transparent window 112 is disposed in the closed position. This allows the door packing opening 34a to be watertightly closed by the door 12. The sealing portion 122 has a flattened annular planar shape with the lower part of the true annular planar shape flattened so that it can adhere closely to the outer edge surrounding the housing side 34q of the door packing opening 34a, which has a flattened circular planar shape.

The connection part 123 surrounds the functional part 121 and is surrounded by the sealing part 122. Therefore, the connection part 123 is disposed between the functional part 121 and the sealing part 122. As a result, the connection part 123 connects the functional part 121 and the sealing part 122. The connection part 123 smoothly connects the functional part 121 and the sealing part 122 so that the normal direction of the surface of the transparent window 112 does not change suddenly between the functional part 121 and the sealing part 122. This makes it possible to prevent steps, depressions, etc., where dust generated when the laundry is dried, from being formed near the boundary between the functional part 121 and the sealing part 122. In addition, it is possible to prevent steps, depressions, etc., where the laundry is caught, from being formed near the boundary between the functional part 121 and the sealing part 122. This makes it possible to prevent the washing performance of the washing machine from being reduced due to the obstruction of the replacement of laundry.

The present disclosure is not limited to the embodiments described above, and the present disclosure is not limited to the embodiments described above, but has a configuration that is substantially the same as the configuration shown in the embodiments described above, a configuration that has the same effects, or a configuration that can achieve the same purpose. You can also replace it with

1 washing machine, 11 housing, 11a housing opening, 12 door, 13 hinge, 14 water supply section, 15 washing section, 16 drain section, 21 water supply port, 22 water supply valve, 23 detergent case, 31 water tank, 31a water tank opening, 31c central axis, 32 drum, 32a drum opening, 33 drum motor, 34 door packing, 34a door packing opening, 34p water tank side, 34q housing side, 41 drain hose, 61 contour, 71 first arc, 72 second arc, 73 third arc, 81 circumference, 91 first portion, 92 second portion, 93 center, 101 circumference, 111 window frame, 112 transparent window, 121 functional portion, 122 sealing portion, 123 connection portion, 131 front plate, 132 panel.

Claims (7)

an aquarium in which an aquarium opening having a perfectly circular planar shape is formed;
A drum having a perfectly circular planar shape and arranged concentrically with the water tank opening is formed, and the drum is housed in the water tank;
a casing having a flat circular planar shape with a flattened lower part of a perfect circular planar shape and having a casing opening arranged concentrically with the aquarium opening;
The casing and the water tank are connected in a watertight manner, and a door packing opening is formed, and the casing side of the door packing opening has a flat circular shape with a flattened lower part of a perfect circular planar shape, and the water tank opening A door packing arranged concentrically with the
A washing machine equipped with 2. The washing machine according to claim 1, wherein the door packing opening on the water tub side has a circular planar shape and is disposed concentrically with the water tub opening. The outlines of the housing opening and the door packing opening on the housing side are as follows:
a first circular arc that is a first portion of the circumference of a first perfect circle having a first radius;
a second circular arc located closer to the center of the first perfect circle than a second portion of the circumference;
a third circular arc that is part of the circumference of a second perfect circle having a second radius smaller than the first radius and connects the first circular arc and the second circular arc;
The washing machine according to claim 1 or 2, having: 3. The washing machine according to claim 1, wherein the lowest points of the housing opening and the door gasket opening are located at the same height as the lowest point of the water tub opening or higher than the lowest point of the water tub opening. Each of the housing opening and the door packing opening on the housing side has a flattened circular shape that is flattened in a range within θ from the lowest point of a perfect circular planar shape in the circumferential direction,
3. The washing machine according to claim 1, wherein the angle θ is equal to or greater than 30° and equal to or less than 90°. a transparent window that is movable between a closed position that closes the housing opening and an open position that does not close the housing opening;
The transparent window is
a functional part that protrudes toward the interior of the drum via the drum opening when the transparent window is placed in the closed position;
a seal portion that comes into close contact with the door packing when the transparent window is placed in the closed position;
a connection part that connects the functional part and the seal part;
The washing machine according to claim 1 or 2, comprising: The functional section has a perfect circular planar shape,
The washing machine according to claim 6, wherein the seal portion has a flat annular planar shape with a flattened lower portion of a perfect annular planar shape.

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