JP3031124B2 - Fully automatic 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 fully automatic washing machine for washing laundry in a washing and spin-drying tub by rotating a pulsator and spinning the washing and spin-drying tub.

[0002]

2. Description of the Related Art Hitherto, a washing and dewatering tub of this type of fully automatic washing machine has been configured as shown in FIGS. Hereinafter, the configuration will be described.

[0003] As shown in FIG.
Is formed of a resin molded product, a dehydration groove 27 is provided on the inner surface of the washing and dehydrating tub 26, and a dehydration hole 28 is formed in the dehydration groove 27.
Was provided. In recent years, as shown in FIG. 5 (B), the washing and dewatering tub 29 is formed of a stainless steel plate, and there is a tendency to improve the strength and the antibacterial effect.

[0004]

However, since the washing and dewatering tub is formed of a metal plate such as a stainless steel plate, the washing and dewatering tub becomes substantially cylindrical, and the washing and dewatering tub is attached to the body of the cylindrical washing and dewatering tub. The shape is provided with a dewatering hole. Therefore, during washing, the laundry rotates in the washing and dewatering tub without obstacles, and there is a problem that the mechanical power is not easily transmitted to the laundry and the cleaning power is reduced. In addition, since the laundry blocks the dehydration holes during dehydration, there is a problem in that moisture in the laundry is hardly removed to the outside, and the dehydration rate decreases. Furthermore, since the washing and dewatering tub is formed of a metal plate, the circulation channel is attached to the inner surface of the washing and dewatering tub as a separate part, so that a gap is formed between the surface of the washing and dehydration tub and the circulation channel. However, since the washing water flows through the gap, there is a problem that lint or the like adheres and accumulates there.

[0005] The present invention solves the above-mentioned problems, and improves the detergency by improving the mechanical force applied to the laundry during washing, and makes it easier for water in the laundry to flow out during dehydration, thereby improving dehydration performance. The primary purpose is to improve.

It is a second object of the present invention to prevent lint and the like from adhering and accumulating in a gap between the inner surface of the washing and dewatering tub and the bottom of the circulating water channel attached thereto.

In order to achieve the first object, the present invention provides a pulsator rotatably disposed on the bottom of a washing and dewatering tub, a pump chamber formed on an outer periphery of a lower blade outer periphery of the pulsator, and A plurality of independent circulation channels from a pump room to an upper part of the washing and dewatering tub, and a plurality of dewatering holes arranged substantially linearly in the rotation axis direction on the inner surface of the washing and dewatering tub. Row, and vertically elongated in the rotation axis direction
A plurality of vertically elongated convex portions inclined in the row direction of the dewatering holes are provided, and the rows of the dewatering holes and the vertically elongated convex portions are arranged so as to be substantially alternate in the circumferential direction. And

In order to achieve the second object, the first
In addition to the above-mentioned problem solving means, a vertically long convex portion is provided so as to be adjacent to both ends in the circumferential direction of the circulation channel.

[0009]

According to the first aspect of the present invention, there is provided:
At the time of washing, a plurality of vertically long convex portions provided on the inner surface of the washing and dewatering tub can further increase the mechanical power transmitted from the pulsator to the laundry, thereby improving the washing power. By arranging the rows and the vertically long protrusions so as to be substantially alternate in the circumferential direction, it is possible to easily drain the water inside the laundry to the outside and improve the dewatering performance. The performance can be enhanced, and the strength of the entire washing and dewatering tub can be further improved by the vertically long convex portions.

Further, according to the second means for solving the problem, since the vertically long convex portion is provided so as to be close to both ends in the circumferential direction of the circulation channel, the washing water is provided in the gap between the surface of the washing and dewatering tub and the circulation channel. Can be prevented, lint and the like can be prevented from adhering and accumulating thereon, and furthermore, the laundry can be prevented from directly touching both edges of the circulation channel, thereby preventing the laundry from being damaged. Further, at the time of assembling the product, it serves as a positioning guide when the circulating water channel is attached to the inner surface of the washing and dewatering tub, thereby improving workability.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

As shown in the drawing, a washing machine outer frame 1 has a water receiving tub 3 suspended by a suspension rod 2 inside. A washing and dewatering tub (hereinafter referred to as a washing tub) 4 is rotatably mounted in the water receiving tub 3. The circulation channel 5 has a water channel 6 formed therein, and one or a plurality of the circulation channels 5 are attached to the inner surface of the washing tub 4. The pulsator 7 is rotatably disposed at the bottom of the washing tub 4 and is integrally provided with the lower blade 8
Is provided. A pump chamber 9 is formed on the outer periphery of the lower blade 8, and the pump chamber 9 communicates with a watering nozzle 10 or a lint filter 11 provided at an upper portion of the washing tub 4 via a water channel 6. The motor 12 drives the pulsator 7 via the V-belt 13 and the speed reduction mechanism 14.

The washing tub 4 has a plurality of dehydration holes 15 on its inner surface.
Are arranged substantially linearly in the direction of the rotation axis, and there are a plurality of rows of the dewatering holes 15 in the circumferential direction. The second vertically long protrusions 17 having a width in the circumferential direction larger than the first vertically long protrusions 16 are arranged so as to be substantially alternate in the circumferential direction. In addition, 18
Is a drain valve, 19 is a water supply valve, 20 is a lid, 21 is a control device,
Reference numeral 22 denotes a fluid balancer for reducing vibration during dehydration.

The operation of the above configuration will be described with reference to FIG. 3. First, as shown in the figure, the laundry 23 is put into the washing tub 4 and a start switch (not shown) is pressed. Thereby, the water supply valve 19 is controlled to supply water to a predetermined water level, and the washing process starts. When the washing process starts, the motor 12 is controlled by the control device 21 to rotate clockwise, pause, rotate counterclockwise, and pause according to the flow of the washing water. This controlled rotation of the motor 12 is transmitted to the pulsator 7 via the V-belt 13 and the speed reduction mechanism 14. Therefore, the motor 12
The pulsator 7 and the lower blade 8 rotate in accordance with the rotation of the above, the laundry 23 in the washing tub 4 and the washing liquid are stirred, and the laundry is washed.

In the washing process, the rotating force of the pulsator 7 is transmitted to the laundry 23, and the laundry 23 also rotates. At this time, the laundry 23 rotates so as to be rubbed against the inner surface of the washing tub 4 and collides with the first vertically long convex portion 16 and the second vertically long convex portion 17. Due to this collision, a mechanical force is further applied to the laundry 23, and rubbing between the laundry 23 occurs, so that the cleaning effect can be further improved.

Next, when the washing step or the rinsing step is completed and the dehydration step is started, the washing tub 4 is rotated at a predetermined rotation speed to dehydrate the clothes. At this time, the laundry 23 is pressed against the washing tub 4 as shown in FIG. 3, the moisture in the laundry is pushed out from the center of rotation, and the pushed-out moisture escapes from the dewatering hole 15. In the example, since the first vertically convex portions 16 and the second vertically convex portions 17 are further provided between the rows of the dewatering holes 15, the moisture of the laundry 23 is supplied to the first vertically convex portions as shown by the arrow a. The water flows along the surfaces of the portion 16 and the second vertically long convex portion 17, flows toward the dewatering hole 15, and falls out of the washing tub 4. As a result, a higher dehydration performance than before can be obtained.

Next, a second embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in the figure, on the surface of the circulation channel 5,
The convex portions 24 and the concave portions 25 are alternately provided in a V-shape. The convex portions 24 and the concave portions 25 are closest to the central portion of the washing and dewatering tub 4 at the central portion, and become distant as the distance from the center increases. It is inclined to become. The first vertically long projections 16 are provided so as to be close to both ends in the circumferential direction of the circulation water channel 5. Note that, instead of the first vertically long convex portion 16, a second vertically long convex portion 17 may be provided so as to be close to both circumferential ends of the circulation channel 5.

The operation of the above construction will be described. In the washing process, even if a gap is formed between the surface of the washing tub 4 and the circulation channel 5, the flow of the washing water into the gap is prevented by the first vertically long projections 16. And lint and the like can be prevented from being deposited there. In addition, the first vertically long projections 16 can prevent the laundry 23 from directly touching both edges of the circulation channel 6 formed of a resin molded product,
It is possible to prevent the laundry from being damaged. Further, at the time of assembling the product, the first vertically long projections 16 serve as positioning guides for attaching the circulation channel 6 to the inner surface of the washing tub 4, thereby improving workability.

[0020]

As is apparent from the above embodiments, according to the present invention, a plurality of rows of a plurality of dehydrating holes arranged substantially linearly in the direction of the rotation axis are provided on the inner surface of the washing and dewatering tub. And, a plurality of vertically long protrusions that are vertically long in the rotation axis direction are provided, and the rows of the dehydration holes and the vertically long protrusions are arranged so as to be substantially alternated in the circumferential direction, so that the laundry is transmitted from the pulsator to the laundry during washing. The mechanical power that can be increased can improve the cleaning power,
During dehydration, the basic performance of a fully automatic washing machine can be improved, such as improving the dehydration performance to make it easier for the water in the laundry to flow out of the laundry. Strength can be improved.

In addition, a plurality of vertically long convex portions are provided on the inner surface of the washing and dewatering tub in the direction of the rotation axis, and the vertically long convex portions are provided so as to be close to both circumferential ends of the circulation channel. It is possible to prevent washing water from flowing into the gap between the surface of the dehydration tank and the circulation channel, prevent lint and the like from adhering and accumulating there, and to prevent laundry from directly touching both edges of the circulation channel. This can prevent the laundry from being damaged, and can serve as a positioning guide when the circulating water channel is attached to the inner surface of the washing and dewatering tub at the time of assembling the product, thereby improving workability.

[Brief description of the drawings]

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

FIG. 2 is a view of an essential part of a washing and dewatering tub of the fully automatic washing machine.

FIG. 3 is a sectional view of a main part of a washing and dewatering tub of the fully automatic washing machine.

FIG. 4 (A) is a cross-sectional view of the vicinity of a circulation channel of a fully automatic washing machine according to a second embodiment of the present invention.

FIG. 5A is a main view of a washing and dewatering tub of a conventional example of a fully automatic washing machine. FIG. 5B is a view of a main part of a washing and dewatering tub of another conventional example of a fully automatic washing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 4 Washing and dehydration tank 5 Circulation water channel 7 Pulsator 8 Lower blade 9 Pump room 15 Dehydration hole 16 1st vertical convex part (vertical convex part) 17 2nd vertical convex part (vertical convex part)

Continuation of the front page (56) References JP-A-56-161094 (JP, A) JP-A-4-285594 (JP, A) JP-A-59-176475 (JP, U) (58) Fields investigated (Int .Cl. ⁷ , DB name) D06F 37 / 12,39 / 08,39 / 12

Claims (2)

(57) [Claims] 1. A pulsator rotatably disposed on a bottom surface of a washing and dewatering tub, a pump chamber formed on an outer periphery of an outer periphery of a lower blade of the pulsator, and a pump chamber and an upper portion of the washing and dewatering tub. With a plurality of independent circulation channels,
On the inner surface of the washing and spin-drying tub, a row of a plurality of spin-drying holes arranged substantially linearly in the rotation axis direction ,
A plurality of vertically long protrusions projecting in the rotation axis direction and inclined in the row direction of the dewatering holes are provided, and the rows of the dewatering holes and the vertically long protrusions are arranged so as to be substantially alternate in the circumferential direction. Fully automatic washing machine. 2. The fully automatic washing machine according to claim 1 , wherein a vertically long convex portion is provided so as to be adjacent to both circumferential ends of the circulation channel.