JPH10323496A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the visibility of the water discharge device of a pump device and to discharge water inside a pump case by a simple operation in a washing machine housing the pump device capable of self water suction. SOLUTION: The upper part of a washing and dehydrating tank 25 is freely openably and closably covered with a lid 35, a box body 32 whose opening part 32a is covered with the lid 35 is fixed to the upper part of an outer frame 31 and the pump device 36 for which a water discharge hole is provided on the pump case 39 is housed in the box body 32. The box body 32 is provided with a lever 49 for opening and closing the water discharge hole and the lever 49 is disposed near the inner periphery of the opening part 32a of the box body 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine containing a pump device capable of absorbing water by itself.

[0002]

2. Description of the Related Art Conventionally, this type of washing machine has been configured as shown in FIGS. Hereinafter, the configuration will be described.

[0003] As shown in FIG.
A pulsator 2 is rotatably arranged on the inner bottom, and the pulsator 2 and the washing and dewatering tub 1 are driven by a motor 3 via a belt 4 by a speed reducer 5. The outer tub 6 rotatably encloses the washing and dewatering tub 1 and is suspended from the upper corner of the outer frame 7. The box 8 is fixed to the upper part of the outer frame 7, and a water supply valve 9 and a water inlet 10 are provided inside the box 8.
An opening 8a is provided at an upper portion, and a lid 11 that covers the opening 8a is provided.
Is arranged.

A pump device 12 absorbs bath water or the like from a water inlet 14 through a water suction hose 13 and a pump case 15.
Is provided with a discharge port 16, a priming port 17 for supplying water to the outside of the pump device 12 for supplying priming water into the pump case 15, and a drain hole 18 at the bottom as shown in FIG.

An operation shaft 19 is provided in the drain hole 18 so as to be slidable in the vertical direction. The operation shaft 19 is fitted with an O-ring 20 on one side so as to close the drain hole 18. A drain button 22 formed of a rubber member is fitted on a washer 23 through the spring 18 and the spring 18 so as to be sandwiched therebetween. Normally, the drainage hole 18 is closed by the O-ring 20, and is kept watertight by the spring force of the spring 21. At this time, the drain button 22 is exposed from the lower surface of the box 8.

When the washing is performed using bath water or the like, the water supply valve 9 is operated for a predetermined time to supply water to the washing and dewatering tub 1 through the water inlet 10 and at the same time a priming port. Water is supplied into the pump case 15 of the pump device 12 from 17 to make the pump case 15 full. Thereafter, bath water or the like is sucked into the pump device 12 from the water suction port 14, is sent to the water injection port guide 24 via the discharge port 16 via the pump case 15, and is injected into the washing and dewatering tub 1.

When the washing operation is completed, the pump case 1
5 is almost completely filled with water. To prevent the priming water in the pump case 15 from freezing, put a hand on the lower surface side of the box 8 through the opening 8a with the lid 11 opened, and use a finger. The priming water is drained by pushing the drain button 22 upward.

[0008]

In such a conventional structure, the lower surface side of the box 8 is significantly uneven due to the housing of the pump device 12, the water supply valve 9, the water inlet 10, the water inlet guide 24 and the like. However, it is not easy to find the drain button 22 by groping.

[0009] In addition, as a water draining operation, the water drain button 2
2 is pushed upward. Usually, the spring 21 for holding the drain button 22 in a watertight manner has a relatively large spring force so as not to be moved by a force such as vibration or impact applied to the body. In addition to the upward movement that is difficult to insert,
There was a problem that a large force was required for the fingertip, the fingertip was hurt, the drainage was halfway, and the water left frozen.

Further, there is a problem that water leaking from the gap between the drainage hole 18 and the operation shaft 19 during the drainage operation passes through the drainage button 22 and wets the fingertip in contact therewith.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and to improve the visibility of a water draining device of a pump device so that water can be drained from a pump case by a simple operation.

[0012]

According to the present invention, in order to achieve the above object, the upper part of the washing tub is openably and closably covered with a lid, and a box covered with an opening is fixed to an upper part of an outer frame. Then, the pump device provided with the drain hole in the pump case is housed in the box.
The box has a lever for opening and closing the drain hole, and this lever is disposed near the inner periphery of the opening of the box.

[0013] Thus, when the lid is opened, the lever for opening and closing the drain hole can be immediately visually recognized, and when there is a possibility that the priming water in the pump case may freeze, the drain can be reliably drained by a simple operation. Freezing of priming water can be prevented beforehand,
The pump device cannot be used until it is thawed by freezing, and cracking and destruction due to freezing of the pump case can be prevented, thereby preventing the possibility of water leakage.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a washing tub, an outer frame containing the washing tub, a lid for opening and closing the upper part of the washing tub, and a lid for covering the upper part of the washing tub. A box body having a cut-out opening and fixed to the upper part of the outer frame, and a pump device housed in the box body and provided with a drain hole in a pump case, wherein the box body is provided with the drain hole The lever is disposed near the inner periphery of the opening of the box, and when the lid is opened, the lever that opens and closes the lever drain hole can be immediately visually recognized, and the lever can be easily opened and closed. By pressing the lever, you can visually check the state of water removal, completely drain the priming water in the pump case, prevent freezing, and use the pump device until it is thawed by freezing. Cracks due to freezing of the pump case,
Destruction and the like can be prevented, and the risk of water leakage can be prevented.

According to a second aspect of the present invention, in the first aspect of the present invention, the lever has a longer distance from the fulcrum to the fulcrum than the distance from the point of action to the fulcrum. When not in operation, ensure the watertightness of the drainage hole, and when performing the drainage operation, the pushing force of the lever can be made smaller than the force that normally closes the drainage hole, and drain easily. Can be.

According to a third aspect of the present invention, in the first aspect of the present invention, the lever is configured to have a predetermined play in the rotating direction when the lever is at rest, and a normal drainage operation is performed. During washing without washing, it is possible to prevent the drain hole from being half-opened due to the lever being pryed, to prevent the drainage of water in the pump case, and to prevent abnormal water absorption such as bath water.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the lever is configured such that a force point is located above an application point when the lever is at rest.
When washing or spin-drying, even if the outer tub swings due to the vibration or impact of the machine, the lever is configured so that the power point is located above the point of application, preventing the outer tub from contacting the lever. It is possible to prevent the drainage of water in the pump case when the normal drainage operation is not performed.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the lever has a storage portion, a hole is provided in the storage portion, and the hole includes a washing tub. It is configured to be located inside, the drainage from the drain hole is collected in the storage part, because it drops into the outer tank from the hole, it can be prevented that water will wet the fingertip along the lever, Water can be prevented from being scattered outside the lever, and there is no drip outside the outer tub, and problems such as wetting the floor surface can be prevented.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the lever is provided with a hole near a lower portion of the power point, and drains water from the drain hole into the washing tub. It is made to drip near the opening and can be easily visually recognized without looking into the priming state at a position equivalent to the water supply position in a normal washing tub, and the water can be completely drained.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the lever is removably disposed below the lower surface of the box, and a lever is provided near the opening of the box. 1.Even if an external force greater than the pushing force of the lever is applied, the lever only falls down, preventing damage to the box or the pump device, without removing the box from the outer frame and disassembling the box. The lever can be attached from below the lower surface of the box, and can be easily reused.

[0021]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) As shown in FIGS. 1 to 3,
The washing and dewatering tub (washing tub) 25 has a pulsator 2 at the inner bottom.
The pulsator 26 and the washing / dewatering tub 25 are driven by a speed reducer 29 via a belt 28 by the rotation of a motor 27. The outer tub 30 includes the washing and dewatering tub 25 and is supported by hanging from the upper corner of the outer frame 31. The box body 32 is fixed to the upper part of the outer frame 31, and a water supply valve 33 and a water inlet 34 are provided therein, and an opening 32 a is provided at an upper part of the washing and dewatering tub 25 at the center. A cover 35 is provided to cover.

The pump device 36 has a built-in electric motor 37 for driving a runner 38. A vortex chamber (not shown) containing the runner 38 is provided in a pump case 39 and communicates with a water inlet 40 and a gas / water separation chamber 41 in the pump case 39. The pump case 39 has a discharge port 42 and a pump case 3 which communicate with the air / water separation chamber 41 at the top.
A priming port 43 for supplying priming water is provided in 9, and a drainage hole 44 is provided at the bottom.

An operation shaft 45 is provided in the drain hole 44 so as to be slidable in the vertical direction. The operation shaft 45 is fitted with an O-ring 46 on one side so as to close the drain hole 44. The other is fitted with a washer 48 and receives one end of the spring 47 via the spring 44 and the spring 47.

The lever 49 is supported on the lower surface of the box 32. One end of the lever 49 has a positional relationship so as to contact the lower end of the operation shaft 45, and the other end extends to the vicinity of the opening 32a and is open. It is disposed at a position where it can be opened and sufficiently viewed from the opening 32a. Normally, the drain hole 44 is closed by an O-ring 46, and is made watertight by the spring force of a spring 47.

The operation in the above configuration will be described. When washing is performed using bath water or the like, the water supply valve 33 supplies water to the washing and dewatering tub 25 through the water inlet 34 and operates for a predetermined time. At the same time as water is poured into the washing and dewatering tub 25, the water is supplied to the pump case 39 of the pump device 36 through the priming pipe 50 provided at the water inlet 34 and connected to the priming port 43 in a state of being filled with water. Thereafter, the bath water or the like absorbs water into the pump device 36 from the water suction port 40, flows from the vortex chamber (not shown) to the water / water separation chamber 41, and then to the discharge port 42, and then to the water injection guide 52 via the discharge pipe 51. Along the way, water is poured into the washing and dewatering tank 25.

When the washing operation is completed, the pump case 3
Although the inside of the pump 9 is almost full, the priming water in the pump case 39 may freeze in winter, especially when the pump is installed outdoors in a cold region. In such a case, in order to prevent the priming water in the pump case 39 from freezing, with the lid 35 opened, the finger is placed on one end of the lever 49 which is immediately visible from the opening 32a, and at the same time the other end of the lever 49 is pushed. Push up the operating shaft 45 to drain the water
, And the water in the pump case 39 can be easily removed without any trouble.

As described above, the priming water in the pump case 39 can be completely drained by the simple opening / closing operation of the lever 49, freezing can be prevented beforehand, and the pump device 36 can be prevented from being thawed by freezing. It is possible to prevent the pump case 39 from being unusable or from being cracked or broken due to freezing of the pump case 39, thereby preventing the possibility of water leakage.

(Embodiment 2) As shown in FIG.
3 is pivotally supported by the lower part of the box 32, one end is provided at the lower end of the operation shaft 45, and the other end is disposed near the lower part of the opening 32a. Here, the point of force 53a is a point pressed by the fingertip, 53b is a fulcrum, and 53c is a point of contact with the lower end of the operation shaft 45 at the point of action. Power point 53
The distance A from the fulcrum 53b to the fulcrum 53b is larger than the distance from the fulcrum 53b to the action point 53c (A> B).

When the lever 53 is at rest, the operating shaft 45 is held by the spring force C of the spring 47 so as to make the drain hole 44 watertight through the O-ring. This spring force C is set to a relatively large force that does not move due to vibration, impact, or the like applied during operation of the body. Other configurations are the same as those in the first embodiment.

The operation of the above structure will be described. When a downward pressing force D is applied to the force point 53a with a fingertip, the fulcrum 53b
The force E is transmitted upward to the action point 53c via the
5 to release the drainage hole 44, and the pump case 39
Drain the water inside. When the operation shaft 45 is pushed up via the lever 53, the following relationship is established.

E = D × A / B (1) E> C (2) From the equations (1) and (2), D> C × B / A ···························································· (3) Since the pressing force D of the fingertip can be drained with a smaller force than the holding force C (spring force) of the operation shaft 45, the pain applied to the fingertip is reduced Can be completely drained.

As shown in FIG. 5, similarly to FIG. 4, the point of force 53a is one end near the opening 32a of the lever 53, and the point of action 53c is the point where it contacts the lower end of the operating shaft 45 of the lever 53. The fulcrum 53b pushes up the lever 53 at the other end of the lever 53, and in synchronization with this, the operating shaft 45
Is movable, the pushing-up force of the lever 53 can be smaller than the holding force of the operation shaft 45, so that the same effect can be obtained.

(Embodiment 3) As shown in FIG.
4 is pivotally supported at the lower part of the box 32 (fulcrum 54b), one end (operating point 54c) is provided at the lower end of the operating shaft 45 during operation, and the other end (force point 54a) is near the lower part of the opening 32a. It is arranged. The tongue 32b is convex downward,
And formed between the fulcrum 54b and the force point 54c. Here, when the lever 54 is at rest, the upper surface of the lever 54 and the tongue 32b have a clearance (play) F (0.3 to 1.0 mm) in a state where the action point 54c is in contact with the lower end of the operation shaft 45. have. Other configurations are the same as those in the first embodiment.

When the pump device 36 is mounted on the box 32, the operation shaft 45 is displaced due to variations in the shape, bending of the lower surface of the box 32, and the like.
The height of the lower end of the lever 54 may vary, but the lever 54 has a gap (play) F (0.3 to 1.0 mm) between the upper surface of the lever 54 and the tongue 32b. Power point 54
When no force is applied to the a, the water-tightness of the drain hole 44 can be maintained at all times, and the lever 54 is strained to drain the water in the pump case 39.
It is possible to prevent a problem that water does not accumulate in the inside and an abnormal water absorption occurs.

Further, once the pump device 36 is operated,
The inside of the pump case 39 becomes full, and unless the lever 54 is operated to drain water, the full state can be maintained, and the pump device 36 can operate smoothly at any time.

(Embodiment 4) As shown in FIG.
5 is supported at the lower part of the box 32 at a fulcrum 55b,
One end (operating point 55c) is located outside the outer frame 31 and abuts on the lower end of the operation shaft 45 during operation, and the other end (power point 55a) is an opening disposed above the washing and spin-drying tub 25 facing the machine body center. 32a is provided near the lower portion. The lever 55 bends in the vicinity of the fulcrum 55b at rest when the drainage operation is not performed, and the force point 55a is located at a position higher than the action point 55c.
It has a crank shape so as to be higher toward the opening 32a. Other configurations are the same as those in the first embodiment.

The operation of the above construction will be described. In the case of washing a relatively small amount of laundry, such as a towel, which has a relatively small capacity and is easily wetted, the washing and dewatering tub 25 is drained after the washing is completed. Is rotated to perform centrifugal dehydration. Here, when the rotation of the washing and dewatering tub 25 is started, the lump of the wet towelet may be offset in the washing and dewatering tub 25 and may be started in an unbalanced state.

At this time, even if the vertical and horizontal vibrations of the entire outer tub 30 (especially the upper part) are increased, the safety device (not shown) for detecting the sway of the outer tub 30 is not actuated. If so, the lever 55 is bent near the fulcrum 55b and the force point 55c is located higher than the application point 55a, and has a crank shape that becomes higher toward the opening 32a. In particular, the fulcrum 55b of the lever 55 can be escaped from the lever 55 to prevent the water in the pump case 39 from colliding with the vicinity of the fulcrum 55b, and the water can be smoothly supplied in the next rinsing stroke after the dehydration is completed.

(Embodiment 5) As shown in FIG.
6 is supported at the lower part of the box 32 at a fulcrum 56b,
One end (action point 56c) contacts the lower end of the operation shaft 45 during operation, and the other end (force point 56a) is disposed near the lower part of the opening 32a. Reference numeral 56d denotes a storage portion, which is bowl-shaped, has an action point 56c at the bottom, has a relatively large hole 56e near the fulcrum 56b at the bottom, and is formed integrally with the lever 56. In the washing and dewatering tub 25, it is located immediately above the washing and dewatering tub 25. Other configurations are the same as those in the first embodiment.

The operation of the above arrangement will be described. When the drainage operation is performed, the power point 56a is depressed and simultaneously the operation shaft 45 is depressed.
Is pushed upward, and water is discharged from the drain hole 44 through the operation shaft 4.
5, falls on the lever 56, gathers in the storage portion 56d, and is drained from the hole 56e before being filled with water in the storage portion 56d,
It is dropped into the washing / dehydrating tub 25.

Here, a storage portion 56d is provided on the lever 56 to collect the collected water once and collect it, and drain the water through the hole 56e at the bottom of the storage portion 56d.
It can be prevented that the fingertip of the power point 56a is wet, and that water is scattered irregularly and scattered outside the outer tub 30. Further, since the hole 56e is located immediately above the washing and dewatering tub 25, it is possible to prevent the hole 56e from dropping out of the outer tub 30 and wet the floor surface.

(Embodiment 6) As shown in FIG.
Numeral 7 is pivotally supported at the lower portion of the box body 32 at a fulcrum 57b, and is formed in a substantially U-shape having an upper portion opened in the longitudinal direction.
In (c), the substantially U-shaped bottom surface 57e is brought into contact with the lower end of the operation shaft 45, and the other end (force point 57a) is disposed near the lower portion of the opening 32a and the substantially U-shaped opening is opened to open a hole 57d. Formed on the top 57f provided above the hole 57d.
7a. The bottom surface 57e is tilted so that the lever 57 moves from the point of action 57c to the fulcrum 57b and the force point 57a side becomes lower. Other configurations are the same as those of the first embodiment.
Is the same as

The operation of the above arrangement will be described. During the draining operation, the power point 57a is depressed and the operating shaft 4 is simultaneously depressed.
5 is pushed upward, the water falls on the lever 57 through the drainage hole 44 along the operation shaft 45, and is drained from the hole 57d along the inclined bottom surface 57e. Here, since the hole 57d is formed near the lower portion of the ceiling portion 57f touched for operating the lever 57, it is possible to prevent the fingertip from getting wet with the drained water, and the water falls almost directly below the pressed fingertip. Therefore, the degree of water removal can be easily confirmed, and the water can be completely drained.

(Embodiment 7) As shown in FIG.
2, a shaft 32c is integrally formed at a lower portion, and the shaft 32c is located immediately above the washing / dewatering tub 25. The lever 58 has a substantially arc-shaped notch 58d having an inner diameter corresponding to the outer diameter of the shaft 32c fitted to the shaft 32c from below the box 32 at the lower portion of the box 32 to support (support point 58b). At the same time, one end (operating point 58c) contacts the lower end of the operating shaft 45 during operation, and the other end (power point 58c).
a) is disposed near the lower portion of the opening 32a.

The notch 58d is formed by the inclined portion 5 opened upward.
8e, an approximately arc-shaped portion 58f having an inner diameter corresponding to the outer diameter of the shaft 32c, and a root portion 58g that is thinner than the approximately arc-shaped portion 58f and bends when a force is applied more than a certain amount. The inclined portion 58e forms a pair. The space distance at the tip is larger than the outer diameter of the shaft 32c, and the space distance below the shaft 32c is smaller than the outer diameter of the shaft 32c. Other configurations are the same as those in the first embodiment.

The operation of the above arrangement will be described. During the draining operation, the power point 58a is depressed and the operating shaft 4 is simultaneously pressed.
5 is pushed upward, and the water falls downward along the operation shaft 45 through the drain hole 44. When an impact force much larger than the force pressing down the lever 58 is applied to the power point 58a at the tip of the lever 58 during a normal water draining operation, the root 58g bends and the inclined portion 58e opens, and at the same time, the lever 58 is turned on the shaft 3
Only by dropping from 2c and falling into the washing and dewatering tub 25, the damage of the box body 32 and the lever 58 can be prevented.

Also, merely by pressing the inclined portion 58e against the shaft 32c and pushing it up from below, the root 58g bends and the shaft 32c
Is along the inclined portion 58e, and is again attached to the shaft 32c by the substantially arc-shaped portion 5.
8f can be fitted, and can be easily re-used immediately.

As shown in FIG. 11, a shaft 58h is integrally provided on the lever 58 side, and a cut-out portion (inclined portion 32d, a substantially arc-shaped portion 32e, and a root portion 32f) is integrally formed below the box 32. It is needless to say that the same effect can be obtained by providing the same.

[0050]

According to the first aspect of the present invention, a washing tub, an outer frame containing the washing tub, a lid for opening and closing the upper part of the washing tub, and a lid for covering the upper part of the washing tub. A box body having a cut-out opening and fixed to the upper part of the outer frame, and a pump device housed in the box body and provided with a drain hole in a pump case, wherein the box body is provided with the drain hole Since this lever is disposed near the inner periphery of the opening of the box, the lever for opening and closing the lever drain hole can be immediately visually recognized when the lid is opened, and a simple lever is provided. By pressing, you can visually check the state of water drainage, completely drain the priming water in the pump case, prevent freezing, prevent use of the pump device until thawing by freezing, Prevent cracks and destruction due to freezing of the pump case and leak water It is possible to prevent the danger in advance.

According to the second aspect of the present invention, the lever has a longer distance from the fulcrum to the power point than the distance from the point of application to the fulcrum. When the watertightness of the hole is ensured and the drainage operation is performed, the pushing force of the lever can be made smaller than the force that normally closes the drainage hole, and the water can be easily drained.

According to the third aspect of the present invention, since the lever is configured to have a predetermined play in the rotating direction when stationary, the lever can be used during washing without performing a normal drainage operation. Thus, it is possible to prevent the drain hole from being half-opened, to prevent water from flowing out of the pump case, and to prevent abnormal water absorption such as bath water.

According to the fourth aspect of the present invention, the lever is configured so that the power point is located above the point of action when the lever is at rest. Even if the outer tub swings, by configuring the lever so that the point of force is located above the point of action, it is possible to prevent the outer tub from contacting the lever,
It is possible to prevent water from being drained from the pump case when a normal drainage operation is not performed.

According to the fifth aspect of the present invention, the lever has a storage portion, a hole is provided in the storage portion, and the hole is located in the outer tub containing the washing tub. Because of the configuration, drainage from the drain hole is collected in the storage part and drops into the outer tank from the hole, so it is possible to prevent water from wetting the fingertip along the lever and water splashing outside the lever Can be prevented, and there is no drip outside the outer tub, and problems such as wetting the floor surface can be prevented.

According to the sixth aspect of the present invention, since the lever is provided with a hole near the lower portion of the power point, the drain from the drain hole is dropped in the washing tub and near the opening, so that the normal At the same position as the water supply position in the washing tub, the priming state can be easily recognized without looking into the priming state, and the water can be completely drained.

According to the seventh aspect of the present invention, since the lever is disposed detachably from below the lower surface of the box body,
Even if an external force greater than the pushing force of the lever is applied to the vicinity of the opening of the box, the lever will only fall down, preventing damage to the box or the pump device, and removing the box from the outer frame. Without disassembling the box, the lever can be attached from below the lower surface of the box, and can be easily reused.

[Brief description of the drawings]

FIG. 1 is a sectional view of a washing machine according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway side view of the washing machine.

FIG. 3 is a sectional view of a main part of the washing machine.

FIG. 4 is a sectional view of a main part of a washing machine according to a second embodiment of the present invention.

FIG. 5 is a sectional view of a main part of another example of the washing machine.

FIG. 6 is a sectional view of a main part of a washing machine according to a third embodiment of the present invention.

FIG. 7 is a sectional view of a main part of a washing machine according to a fourth embodiment of the present invention.

FIG. 8 is a sectional view of a main part of a washing machine according to a fifth embodiment of the present invention.

FIG. 9 is a sectional view of a main part of a washing machine according to a sixth embodiment of the present invention.

FIG. 10 is a sectional view of a main part of a washing machine according to a seventh embodiment of the present invention.

FIG. 11 is a sectional view of a main part of another example of the washing machine.

FIG. 12 is a sectional view of a conventional washing machine.

FIG. 13 is a sectional view of a main part of the washing machine.

[Explanation of symbols]

 25 Washing and spin-drying tub (washing tub) 31 Outer frame 32 Box 32a Opening 35 Lid 36 Pump device 39 Pump case 44 Drain hole 49 Lever

Claims (7)

[Claims] 1. A washing tub, an outer frame containing the washing tub, a lid for opening and closing the upper part of the washing tub, and an opening covered by the lid, which is fixed to an upper portion of the outer frame. And a pump device housed in the box body and provided with a drain hole in the pump case, wherein the box body has a lever for opening and closing the drain hole, and the lever is provided in the box. A washing machine arranged near the inner circumference of the body opening. 2. The washing machine according to claim 1, wherein the lever has a longer distance from the fulcrum to the power point than a distance from the point of action to the fulcrum. 3. The washing machine according to claim 1, wherein the lever has a predetermined play in a rotating direction when the lever is at rest. 4. The washing machine according to claim 1, wherein the lever is configured such that a power point is located above an application point when the lever is at rest. 5. The washing machine according to claim 1, wherein the lever has a storage portion, a hole is provided in the storage portion, and the hole is located in an outer tub containing the washing tub. 6. The washing machine according to claim 1, wherein the lever has a hole near a lower portion of the power point. 7. The washing machine according to claim 1, wherein the lever is provided detachably from below the lower surface of the box body.