JP3222938B2 - Washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine having an inner washing tub and an outer washing tub, wherein the inner washing tub is detachable.

[0002]

2. Description of the Related Art Deterioration of the natural environment due to pollution of rivers and lakes has become a social problem. One of the causes of such pollution is miscellaneous wastewater from households. It is a source of pollution.

[0003] Synthetic detergents also kill microorganisms in water, thus reducing the ability of microorganisms in household septic tanks and urban sewage treatment plants to purify microorganisms, and further impair the self-cleaning action of rivers and the like.

[0004] Under such circumstances, it has been called for to reduce the use of synthetic detergents at homes and to prevent pollution of rivers and the like by using so-called powdered soaps instead of synthetic detergents.

On the other hand, an electric washing machine is usually used for washing at home. In a general electric washing machine, water or hot water is put into a washing tub, a predetermined amount of detergent is put into the washing tub, mixed, the laundry is put into the washing tub, and a swirling water flow is generated by a pulsator to wash. Is what you do.

[0006]

However, in recent years, in particular,
The remarkable prevalence of fully automatic washing machines has caused problems, especially when using powdered soap. That is, when washing is performed using powdered soap in such a type of washing machine, the adhesion of washing debris, soap debris, mold and the like is observed between the outer washing tub and the inner washing machine of the washing machine. This naturally becomes remarkable as the number of uses increases. When the amount of these deposits increases, the generation of odors, soap scum with black mold, etc. may flow back into the washing tub during washing and rinsing, and these may adhere to the laundry. This phenomenon also occurs with the use of a synthetic detergent, but is particularly remarkable in the case of powdered soap.

[0007] Such dirt accumulates in hard-to-reach and hard-to-recognize parts in the washing machine, and there is no means for effectively cleaning and removing the dirt.

However, the structure of the conventional fully automatic washing machine has a structure in which the space between the inner washing tub and the outer washing tub cannot be seen from the outside because the upper surface thereof is covered. ing. Therefore, it was difficult to clean dirt attached and deposited on this portion.

Therefore, in order to prevent the use of powdered soap in order to prevent pollution of rivers and the like due to drainage, it is important to solve the above-mentioned problems in the washing machine.

On the other hand, in order to remove dirt from the washing tub as described above, a cleaning agent having a chlorine-based bleaching action has conventionally been used. However, since chlorine gas is generated at the time of use, chlorine gas is generated. Care must be taken, and mixing with wastewater will significantly impair water quality. On the other hand, for example,
Japanese Patent No. 11672 discloses a washing machine in which the dewatering tub is detachable, but there is a problem that the operation of attaching and detaching the dehydration tub is not easy. In addition, since the dehydration tub rotates at a high speed during dehydration, it is required to be easily detachable, and at the same time, to have stability at the time of high-speed rotation and strength to withstand rotation. In particular, it is desirable that the space between the inner washing tub and the outer washing tub has a structure that can be easily viewed from the outside only by opening and closing the lid so that the degree of contamination can be confirmed.

The present invention has been made in view of the above circumstances, and provides a washing machine having a structure in which a washing tub can be easily attached and detached and dirt attached to the washing tub can be easily removed. As an issue.

[0012]

The present invention has the following configuration to achieve the above object. That is, the inner washing tub (3) which rotates independently in the outer washing tub (2).
Outer rotating shafts (44) that rotate independently of each other
A double rotating shaft (42) comprising an inner rotating shaft (45) and an inner rotating shaft (45) is provided through the outer washing tub (2), and the inner rotating tub (3) is detachably attached to the outer rotating shaft (44). In a double-tub washing machine in which a pulsator (7) is detachably connected to an inner rotating shaft (45), an outer rotating shaft (44) is provided at the bottom of the inner washing tub (3). ) And an inner rotating shaft (45) are formed therein. A mounting plate (46) is formed on the outer rotating shaft (44) so as to closely overlap the end (41) of the mounting hole of the inner washing tub (3). ) Are integrally formed, and a fixed plate (50) is provided detachably with respect to the outer rotating shaft (44). An inner washing tub (50) is provided between the fixed plate (50) and the connecting plate (46). 3) At the end of the mounting hole (4
1) is located, and the fixed plate (50) is attached to the outer rotating shaft (4).
4), the end 41 of the mounting hole of the inner washing tub (3) overlapped with the connecting plate (46) is tightly fixed to the outer rotating shaft (44) and the inner washing tub (3).
Are integrated, while washing pipes (8) (30) are provided in a gap (12) between the outer washing tub (2) and the inner washing tub (3).
The washing pipes (8) and (30) are provided with jets (9a), (9b) and (18) for supplying the washing liquid and jetting the washing liquid at least toward the inner washing tub (3). It is characterized by having been provided.

[0013]

The washing machine main body is rotatably supported by a gap 12 between the outer washing tub 2 and the inner washing tub 3 and is rotatable in contact with the outer surface of the inner washing tub 3. A dirt remover 1 having a brush 14 implanted around a shaft 13.
5 may be provided.

The rotary shaft 13 is formed as a hollow tube, and a plurality of holes communicating with the hollow portion are provided on the outer periphery thereof in parallel to supply a cleaning liquid to the hollow portion.

On the upper surface of the washing machine 1, a lid 10 rotatably supported by a part of the washing machine 1 is installed.
Numeral 0 can cover the upper opening surfaces of the washing machine body 1, the outer washing tub 2, and the inner washing tub 3 so as to be freely opened and closed.

[0017]

In the washing machine of the present invention, the pulsator 7 is first removed from the inner rotary shaft 45 after the washing is completed. Next, after removing the inner washing tub 3 from the outer rotating shaft 44, the inner washing tub 3 can be taken out of the outer washing tub 2 by lifting the inner washing tub 3.

After removing the inner washing tub 3, the outer surface thereof and the inner surface of the outer washing tub 2 are particularly cleaned to remove dirt attached to these surfaces. When the cleaning operation is completed, the inner washing tub 3 is removed from the outer washing tub 2 through a reverse process of the above-mentioned removing operation.
Install inside.

A cleaning liquid such as water is sprayed from the cleaning liquid supply pipe toward the inner wall surface of the inner washing tub 3. Then, the sprayed cleaning liquid flows toward the bottom surface, and soap scum and other dirt attached to the inner wall surface are flown together with the washing tub cleaning liquid, and are mixed with the wastewater to be treated.

After the washing is completed or during the washing, the inner washing tub 3 is rotated, and the dirt remover 15 installed in the gap between the outer washing tub 2 and the inner washing tub is set opposite to the inner washing tub 2. If it rotates in the direction, the brush 14 of a dirt remover will contact the outer peripheral surface of the inner washing tub 3, and the dirt which adhered will be removed. In this case, when the rotating shaft 13 is a hollow tube, a plurality of holes communicating with the hollow portion are provided side by side on the outer periphery thereof, and the cleaning solution is supplied to the hollow portion. The cleaning effect is exhibited.

The washing liquid is sprayed from the washing tube 8 toward the outer surface of the inner washing tub 3 and the inner surface of the outer washing tub 2 at the time of washing or after the washing, and the soap scum adhering to the side surfaces of these washing tubs. And the like can be removed.

When the lid 10 which can be opened and closed is provided, the washing machine main body 1 (outer side surface), the outer washing tub 2 and the inner washing tub 3
Since the respective gaps can be viewed from the outside, the insides of these gaps can be cleaned by using a brush or the like as appropriate.

[0023]

Embodiment 1 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing a main part of a washing machine equipped with the device of the present invention. This washing machine is a fully automatic washing machine, and an outer washing tub 2 is provided in a box-shaped washing machine body 1. As shown in FIG. 4, the outer washing tub 2 has a substantially square shape in which each corner 6 is rounded.
It has a rectangular parallelepiped shape with an open upper surface. This outside washing tub 2
Inside, an inner washing tub 3 formed in a cylindrical shape and having an open upper surface is provided. The inner washing tub 3 is rotatable independently of the outer washing tub 2 by a motor. The inner washing tub 3 also serves as a dehydrating basket, and rotates at a high speed in a state where laundry is stored during dehydration.

At the bottom of the inner washing tub 3, there is provided a pulsator 7 having a disk shape and a convex portion formed radially on the surface, which is rotated by a motor. By the rotation of the pulsator 7, the washing water in the inner washing tub 3 becomes a spiral water flow, and the laundry is rotated and stirred with water, detergent and the like.

The outer bottom surface 3a of the inner washing tub 3 is a curved surface, and a mounting hole for a rotating shaft is provided in the center, and the outer peripheral edge of the mounting hole is centered on the mounting hole so as to form a step. The portion defined as a circle forms a protruding end protruding in a circular shape.

On the other hand, as shown in FIG. 2, an insertion hole 43 for the dual rotary shaft 42 is provided at a position corresponding to the mounting hole 40 of the inner washing tub 3 on the outer bottom of the outer washing tub 2. .
The double rotating shaft 42 has a structure in which an inner rotating shaft 45 that rotates independently of the outer rotating shaft 44 is inserted into a hollow outer rotating shaft 44. The protruding end 41 of the inner washing tub 3 is provided with a connecting plate
6, the connecting plate 46 is provided so as to protrude in the outer circumferential direction of the outer rotating shaft 44. A plurality of projections 47 are provided on the connecting surface of the connecting plate 46 with the protruding end 41, and a fitting hole 48 for inserting the protrusion 47 is formed at a corresponding position on the connecting plate 46 side.

A screw portion 49 is formed on the outer periphery of the distal end of the outer rotating shaft 44. A substantially regular hexagonal fixing plate 50 is screwed to the screw portion 49, and the upper surface of the fixing plate 50 is formed on the inner washing tub. It is a surface that is continuous with the inner bottom surface 3b. When the fixing plate 50 is screwed together, the protruding end 41 and the connecting plate 46, which are overlapped with each other, are fixed in position.
4 and the inner washing tub 3 are integrated. And the inner rotating shaft 45
The pulsator 7 is connected to a tip of the pulsator 7 by a set screw 51.

Therefore, when only the outer rotating shaft 42 rotates, the inner washing tub 3 rotates, and when only the inner rotating shaft 45 rotates, only the pulsator 7 rotates. The screw portion 49 is not loosened by the rotation of the inner washing tub 3 if its screwing direction is opposite to the rotating direction of the inner washing tub 3 during dehydration.

Next, the operation of the cleaning apparatus of this embodiment will be described. First, at the time of washing, the rotation of a motor (not shown)
The inner rotating shaft 45 rotates and the pulsator 7 rotates, and a water flow is generated in the inner washing tub 3.

At the time of dehydration after the completion of the washing, the inner washing tub 3 rotates at a high speed with the rotation of a motor (not shown) to act as a dehydrating basket, and a dehydrating operation is performed. Normally, the inner washing tub 3 is used as described above. However, in the case where dirt such as soap scum adheres between the inner washing tub 3 and the outer washing tub 2 for a certain period of time, the inner washing tub 3 is removed as follows. To separate.

First, the set screw 51 is removed and the pulsator 7 is removed from the inner rotary shaft 45. Next, the fixing plate 50 is rotated and removed from the outer rotating shaft 42. In this operation, for example, as shown in FIG. 3, a disk 54 having a concave portion 53 having the same inner shape as the fixing plate 50 formed on one surface.
And a detacher 56 having a T-shaped handle 55 for rotating the disk 54 attached to the side opposite to the recess 53 is used. If the fixing plate 50 is fitted into the concave portion 53 and the handle 55 is rotated in a direction to loosen the screw, the fixing plate 50 rotates and the screw engagement with the outer rotary shaft 44 is released. However, the attachment / detachment tool 56 is not limited to the one having such a configuration, and it is essential that the fixing plate 50 be detachable from the outer rotation shaft 44.

Thereafter, when the inner washing tub 3 is lifted, the overlapping portion of the protruding end portion 41 and the connecting plate 46 is separated, and the inner washing tub 3 can be removed from the outer washing tub 2. After the above-mentioned removal operation is completed, the outer surface of the inner washing tub 3 and the inner surface of the outer washing tub 2 are particularly cleaned to remove dirt attached to these surfaces.

After the cleaning operation is completed, if the inner washing tub 3 is mounted in the outer washing tub 2 through the reverse process of the above-mentioned removing operation, washing can be performed again.

[0034]

Embodiment 2 In this embodiment, the structure in which the inner washing tub 3 having the pulsator is detachably attached to the outer washing tub 2 via an attaching / detaching mechanism is the same as in the first embodiment. Therefore, description of this portion will be omitted, and only different portions will be described.

On the upper surface of the washing machine 1, an outer lid 9 whose one side is rotatably supported by an edge on the main body side is provided by book number. An inner cover 10 is provided near the outer cover 9 and pivots in the same direction as the outer cover 9 about the side inside the one side as an axis. ,
The upper opening surfaces of the washing machine body 1, the outer washing tub 2, and the inner washing tub 3 are covered.

In this washing machine, as shown in FIG. 7, a supply pipe 8 for washing water is provided on the outer peripheral edge of the outer washing tub 2 so as to surround the opening of the outer washing tub 2. The supply pipe 8 is connected to a water supply port 11 provided in a corner of the washing machine main body 1, and a hose directly connected to a water tap is detachably connected to the water supply port 11.

Further, as shown in FIG. 5, the supply pipe 8 has a substantially triangular cross section, and the left and right outer surfaces near the top in the bottom direction have the inside of both the outer washing tub 2 and the inner washing tub 3. First and second injection ports 9a and 9b for injecting cleaning water to the wall surface are provided, respectively. The first injection port 9a is provided on the outer surface adjacent to the top facing the bottom direction, and the second injection port 9a is provided.
b is provided substantially at the center of the inner surface.

Wash water flows out from both ends of one side of the supply pipe 8 as shown by arrows in FIGS. 5 and 6, and the wash water injected from the first injection port 9a is supplied to the inside of the outer washing tub 2. It flows down along the wall surface 19. Thus, the supply pipe 8
On its outer side, a plurality of first spouts 9a directed toward the inner wall surface of the outer washing tub 2 are provided in a straight line, and similarly, the washing water jetted from the second spouts 9b is used to wash the inner washing water. It flows down along the outer surface of the tank 3. At this time, the first ejection port 9a ejects water toward the outer washing tub 2,
These first injection ports 9a are formed to be inclined at 45 degrees as shown in FIG. This inclination is sprayed along the rotation direction of the inner washing tub 3 so that the momentum at which the washing water is sprayed is not weakened by the influence of the wind pressure due to the rotation of the inner washing tub 3.

On the other hand, the second jet port 9b jets washing water toward the outer surface of the inner washing tub 3. In this case, if the rotation speed of the inner washing tub 3 is high, the speed at which the washing water collides increases, and the washing effect is enhanced.

In the washing machine of this embodiment, a dirt remover 15 is provided in a gap 12 at a corner between the outer washing tub 2 and the inner washing tub 3. As shown in FIG. 10, the dirt remover 15 includes a rod-shaped rotating shaft 13 having a length from the top to the bottom of the washing tub, and a brush 14 is planted around the rotating shaft 13.

The upper end of the rotating shaft 13 is pivotally supported by a triangular support plate 20 protruding from a corner of the main body 1 of the washing machine. The support plate 20 is provided with a long hole 21 and the rotating shaft 1
Numeral 3 penetrates the elongated hole 21 and can reciprocate in the elongated hole 21 in a direction orthogonal to the axial direction.

The lower part of the rotating shaft 13 is bent in an L shape, and the lower end 24 is formed in a T shape and is rotatably supported by the bearing 16. Further, a motor 25 is connected to one end of the rotating shaft 13 so that the brush 14 rotates in contact with the outer surface of the inner washing tub 3.

A washing pipe 30 is provided outside the dirt remover 15 from the top to the bottom of the washing tub. As shown in FIG. 9, the washing tube 30 is provided along the wall surface of the outer washing tub 2 and has a circular cross section in this embodiment. However, the cross-sectional shape is not limited to this.

The washing pipe 30 is provided with a plurality of jets 18 for jetting washing water toward the outer surface of the inner washing tub 3 in the longitudinal direction. The upper end of the washing pipe 30 is connected to the water supply port 11, and washing water is supplied to the inside.

Next, how to use the above washing machine will be described. During rinsing or after washing, tap water is continuously supplied from a hose connected to the water supply port 11. Then, washing water is ejected from the injection ports 9a and 9b of the supply pipe 8, and the washing water is poured into the inner side surface of the outer washing tub 2 and the outer side surface of the inner washing tub 3 to form a flow covering the entirety of these surfaces. Flow down. Therefore, dirt adhering to these surfaces is washed away.

When the motor 25 is rotated and the inner washing tub 3 is slowly rotated, the brush 14 rotates in contact with the outer surface of the inner washing tub 3 and brushes the entire outer surface. Is sufficiently removed.
It goes without saying that this is more effective than simply washing away.

Since the rotary shaft 13 reciprocates within the elongated hole 21 around the bearing 16 at the lower end (arrow b), the brush 14 moves the inner cleaning tub 3 when not in use. It is retracted to a position where it does not contact the outer peripheral surface.

Further, at the same time, washing water is poured from the injection port 18 of the washing pipe 30 to the outer surface of the inner washing tub 3, and dirt is washed out and removed. The washing water spouts vigorously from the small jet port 18 due to the water pressure, but this jet becomes higher and stronger as it goes toward the bottom surface side. This is advantageous because the bottom surface 3a of the inner washing tub is more easily soiled than the upper portion thereof.

It should be noted that the above three types of cleaning mechanisms may be installed and operated at the same time, but one or more cleaning mechanisms may be appropriately selected and operated according to the state of contamination. Or can be mounted.

By mounting these washing mechanisms, many parts of the outer surface and the inner surface of the outer washing tub can be washed without removing the inner washing tub. It can be efficiently cleaned before it becomes difficult to drop.

[0051]

As described above, according to the present invention, soap scum or the like adhering to a washing tub or a dehydrating basket is attached to the outer or inner washing tub by removing the inner washing tub or supplying a washing liquid from a washing tube. It is possible to easily remove the stains. Therefore, the washing tub can always be kept clean.

In particular, since dirt does not remain in a washing tub or the like even when powdered soap is used, it is possible to reduce the use of a synthetic detergent and to remove contamination of a river or the like due to drainage from a washing machine.

In addition, dirt deposited on the washing tub does not adhere to the laundry, and the laundry can be finished cleanly.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing a main part of a washing machine of the present invention.

FIG. 2 is a sectional view of a main part of a detachable mechanism.

FIG. 3 (1) Partial cross-sectional view of the attachment / detachment (2) Plan view of a fixing plate to which the attachment / detachment fits

FIG. 4 is an overall perspective view of a washing machine.

FIG. 5 is a sectional view of a supply pipe.

FIG. 6 is a diagram showing a state in which a cleaning liquid is supplied from a supply pipe toward an inner washing tub.

FIG. 7 is a diagram showing a state in which a cleaning liquid is supplied from a supply pipe toward an outer washing tub.

FIG. 8 is a plan view of the washing machine.

FIG. 9 is a sectional view showing a state in which a cleaning liquid is supplied from a cleaning pipe.

FIG. 10 is a perspective view of a stain remover.

FIG. 11 is a cross-sectional view showing a state in which a stain remover is mounted.

[Explanation of symbols]

 2 outer washing tub 3 inner washing tub 7 pulsator 42 double rotating shaft 44 outer rotating shaft 45 inner rotating shaft

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D06F 37/12 D06F 39/00

Claims (2)

(57) [Claims] 1. An independently rotating inner washing tub (3) is installed in an outer washing tub (2) and rotated independently of each other.
An outer rotating shaft (44) and an inner rotating shaft (45);
A heavy rotating shaft (42) is provided through the outer washing tub (2).
The inner rotating tub (3) is attached to the outer rotating shaft (44).
Removably connected, and the inner rotating shaft (45)
Washing machine of the double tub type to which the tar (7) is detachably connected
In the bottom of the inner washing tub (3), the outer rotating shaft
(44) and the mounting hole through which the inner rotating shaft (45) is inserted
The inner rotating tub (3) is attached to the outer rotating shaft (44).
A connecting plate (46) that is in close contact with the end (41) of the hole is integrated
Fixed plate (5) which is formed in
0), and the fixed plate (50) and the connecting plate (4) are provided.
6) and the end (41) of the mounting hole of the inner washing tub (3).
Is located, and this fixing plate (50) is attached to the outer rotating shaft (44).
Thereby, the inner washing tub (3), which is superimposed on each other,
The end (41) of the mounting hole and the connecting plate (46) are tightly fixed.
The outer rotating shaft (44) and the inner washing tub (3) are integrated.
Ri, whereas, the outer tub (2) and the inner tub during (3)
The washing pipes (8) and (30) are provided in the gap (12), and
Supply the cleaning liquid to the cleaning pipes (8) and (30), and
For spraying the washing liquid toward the inner washing tub (3)
A washing machine provided with injection ports (9a), (9b) and (18) . 2. A lid (10) rotatably supported by one W portion of the washing machine (1) is provided on an upper surface of the washing machine (1), and the lid (10) is attached to the washing machine (1). The washing machine according to claim 1, wherein the upper opening surface of each of the main body (1), the outer washing tub (2), and the inner washing tub (3) is opened and closed freely.