JP3291433B2 - 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, and more particularly, to a washing and dewatering tub which is rotatable in an outer tub.
The present invention relates to a washing machine for injecting water into the washing / dewatering tub via a detergent container.

[0002]

2. Description of the Related Art Rinsing in a washing machine is roughly divided into:
There are three types of so-called pool rinse, water rinse and dehydration rinse. In the pool rinsing, after a predetermined amount of water is injected into the washing and dewatering tub, the water injection is stopped, and the rotating blades are rotated to perform the rinsing. In the water-injection rinse, the water injection is continued even after a predetermined amount of water has been injected into the washing and dewatering tub, and the rinsing is performed by rotating the rotor while discharging a part of the water in the washing and dewatering tub.

On the other hand, in the dehydration rinsing, first, water is injected to such an extent that water permeates the entire laundry, and after the water injection is stopped, the washing and dewatering tub is rotated at a high speed to perform dehydration. In the dehydration rinsing, the detergent water that has permeated into the laundry is removed together with the water by the dehydration and is quickly removed. .

[0004]

In the above-mentioned dewatering and rinsing, for example, a water inlet provided above the rear of the washing and dewatering tub in order to make the water fall evenly on the laundry contained in the washing and dewatering tub. When the washing and dewatering tub is filled with water, the washing and dewatering tub is rotated at an extremely low speed. However, since the rotation drive mechanism of the washing and spin-drying tub is mainly designed for high-speed rotation for spin-drying, the motor must be driven intermittently when rotating the washing and spin-drying tub at low speed. become. That is, since the rotation for a short time and the stop of the rotation are alternately performed, the washing and dewatering tub does not rotate at a constant speed, and the manner in which water is applied to the laundry tends to be uneven.

Furthermore, since the drainage solenoid valve is generally opened simultaneously with the rotation of the washing and dewatering tub, if water is injected while rotating the washing and dewatering tub,
Much of the injected water is drained instead of collecting in the washing and dewatering tub, and the water is not effectively used.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a washing machine in which water is uniformly contained in laundry during dehydration rinsing, so that rinsing unevenness is reduced. An object of the present invention is to provide a washing machine in which injected water is effectively used.

[0007]

Means for Solving the Problems and Embodiments of the Invention The present invention made to solve the above-mentioned problems is directed to a washing machine in which a rotatable washing and dewatering tub is arranged in an outer tub. ) A water supply pipe for guiding water supplied from the outside; b) a water inlet with an internal detergent container connected to the end of the water supply pipe; and c) a balance ring attached to the upper end of the washing and dewatering tub. A water channel having a water injection hole formed on the lower surface thereof, d) an outer tank cover attached to the inner circumference near the upper end of the outer tank, and An outer tank cover having a water receiving portion formed at a lower portion of the water discharge portion and a water injection opening provided at a position of the water receiving portion facing the upper surface of the water channel.

In the washing machine according to the present invention, when the water supply valve provided immediately before the water supply pipe is opened and water flows into the water supply pipe, the water flows into the water injection port, and after passing through the detergent container, the water discharge section. Is discharged from The water falls into the water receiving portion of the outer tub cover, and is further poured into a water channel formed integrally with the balance ring from a water injection opening of the water receiving portion. While this water flows along the upper edge of the washing and dewatering tub along the waterway,
It falls down from a water injection hole formed on the lower surface, that is, near the inner peripheral wall of the washing and dewatering tub. For this reason, water falls on the laundry in the washing / dewatering tub in a shower-like manner from the entire circumference.

The water passage provided integrally with the balance ring means that the balance ring is divided into a plurality in the radial direction, one of the divided rings is opened, and the other divided hollow body is formed. It can be configured to be used as a balancer.

[0010]

According to the washing machine of the present invention, since water is injected from the entire circumference above the washing and dewatering tub without rotating it, any position in the washing and dewatering tub can be used. Water falls almost evenly on the laundry. For this reason, during dehydration rinsing, uneven rinsing can be prevented, and water is not wasted because no water is discharged during the injection.

Further, since the injected water falls to a position near the inner peripheral wall surface of the washing and dewatering tub, the laundry stuck on the inner peripheral wall surface of the washing and dewatering tub is quickly peeled off when rinsing the pool. Rinsing efficiency is improved.

[0012] Further, when the user himself / herself carries out the detergent introduction, there is an advantage that the detergent is easily dissolved in water regardless of the position where the detergent is introduced in any of the washing and dewatering tubs.

[0013]

FIG. 1 shows an embodiment of a washing machine according to the present invention.
This will be described with reference to FIGS. FIG. 1 is a longitudinal sectional view showing the entire configuration of the washing machine, FIG. 2 is a top perspective view of a main part of the washing machine, FIG. 3 is a top view of an outer tub cover of the washing machine, and FIG. FIG. 5 is a top view of a washing and dewatering tub (balance ring), FIG. 6 is a sectional view taken along line C1-C2 of FIG. 5, and FIG. 7 is a water inlet port along line A1-A2 of FIG. It is sectional drawing of a tank cover and a balance ring.

In the washing machine 1, an outer tub 3 is supported by four hanging rods (not shown) inside the outer box 2. The washing and dewatering tub 4 is rotatably supported on a rotating shaft 5 provided on the bottom wall thereof. A rotating blade 6 is rotatably provided at the bottom in the washing and dewatering tub 4. The power switching mechanism 7 allows the rotating blade 6 and the washing and dewatering tub 4 to rotate integrally or Only the rotation is switched. A motor 8 is arranged below the bottom wall of the outer tub 3, and the rotation of the motor 8 is controlled by a motor pulley 9, a belt 10, and a main pulley 1.
1 to the power switching mechanism 7.

A water supply port 12 connected to a water tap by a hose is provided behind the upper plate 2a constituting the outer box 2.
A water supply valve 13 is disposed immediately below the water supply port 12. A bellows-shaped water supply pipe 14 connected to the water supply valve 13 is connected to a water inlet 15. A drain pipe 17 is connected to the back of the bottom wall of the outer tub 3, and a drain solenoid valve 1 is provided in the middle thereof.
8 are provided.

The outer tank cover 3a attached near the upper end of the outer tank 3 has a water inlet 15 as shown in FIGS.
The rib 3 extending upward at a position located below
A water receiving portion 30 is formed so as to be surrounded by the first and outermost ribs 32 provided on the outermost periphery. In addition, two openings 33 are provided in a fan shape on the lower surface of the water receiving portion 30.

On the other hand, as shown in FIGS. 5 and 6, the balance ring 4a attached to the upper end of the washing and dewatering tub 4 is vertically divided into three parts in the radial direction. A groove that is used as a balancer in which liquid is injected into the inside and a groove whose upper surface on the inner peripheral side is open is used as a water channel 42. On the lower surface of the water channel 42, small holes 4 are formed at substantially equal intervals.
3 are provided. The opening 33 in the water receiving portion 30 of the outer tub cover 3a is formed at a position corresponding to the upper surface of the water channel 42 (a position indicated by a broken line in FIG. 5).

As shown in FIG. 7, the water injection port 15 comprises a water injection pipe 20 having a plurality of small holes 21 on a lower wall thereof, and a concave portion 22 located below the water injection pipe 20. A detergent container 23 which can be put in and taken out from the front is attached to the concave portion 22, and a detergent is put into the detergent container 23 in advance when washing a reserved course. A rear wall opening 24 is provided in the lower portion of the rear wall of the detergent container 23, and a gap 25 exists between the lower surface of the detergent container 23 and the lower wall of the concave portion 22 when the detergent container 23 is mounted in the concave portion 22. I do. This gap 25 communicates with the detergent container 23 through the rear wall opening 24.

When the water supply valve 13 is opened in a state where the detergent container 23 is mounted in the recess 22, water that has passed through the water supply pipe 14 reaches the water supply port 15, and a plurality of small pipes of the water supply pipe 20 are provided. It drops into the detergent container 23 from the hole 21 and flows into the gap 25 through the rear wall opening 24 together with the detergent in the detergent container 23 (when the detergent is stored). The water containing the detergent flows out of the water inlet 15 through the water outlet 26 in front of the gap 25.

This water falls on the water receiving portion 30 of the outer tub cover 3a under the water and fills the water receiving portion 30. Further, this water falls from the opening 33 on the lower surface to the innermost water passage 42 of the balance ring 4a below, and flows all around the water passage 42. At this time, water falls downward from the small holes 43 on the lower surface of the water channel 42 and falls into the washing / dewatering tub 4 in a shower shape. This falling water falls to a position near the inner peripheral wall surface of the washing and dewatering tub 4.
Therefore, it is possible to almost uniformly pour water on the laundry located at any position in the washing and dewatering tub 4 without rotating the washing and dewatering tub 4.

In the above embodiment, the water passage 42 is formed on the innermost periphery of the balance ring 4a. However, other portions may be used as the water passage. Since the opening 33 of the water receiving portion 30 formed in the outer tank cover 3a needs to be aligned with the position of the water channel 42, as is apparent from FIG. It is necessary to increase the protrusion of the part 30 toward the inner peripheral side. This water receiver 30
Is an obstacle when taking the laundry in and out of the washing and dewatering tub 4. In order to facilitate the taking in and out of the laundry, the water passage 42 is arranged on the outer peripheral side of the balance ring 4a as much as possible, Is preferably reduced.

It is to be noted that the configuration described above is merely an example, and it is apparent that the shape can be appropriately modified and changed in accordance with the gist of the present invention.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing the entire configuration of a washing machine according to an embodiment of the present invention.

FIG. 2 is a top perspective view of a main part of the washing machine.

FIG. 3 is a top view of an outer tub cover of the washing machine.

FIG. 4 is a sectional view taken along line B1-B2 in FIG. 3;

FIG. 5 is a top view of a washing and dewatering tub (balance ring) of the washing machine.

6 is a sectional view taken along line C1-C2 in FIG. 5;

FIG. 7 is a sectional view of a water inlet, an outer tank cover, and a balance ring taken along line A1-A2 in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 3 ... Outer tub 3a ... Outer tub cover 4 ... Washing and dehydration tub 4a ... Balance ring 14 ... Water supply pipe 15 ... Filling port 30 ... Water receiving part 33 ... Opening 42 ... Water channel 43 ... Small hole

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D06F 37/12 D06F 39/08 D06F 39/12

Claims (2)

(57) [Claims] 1. A washing machine in which a rotatable washing and dewatering tub is arranged in an outer tub, comprising: a) a water supply pipe for guiding water supplied from outside; and b) an internal water pipe connected to an end of the water supply pipe. A) a water supply port provided with a detergent container, c) a water path formed around the entire circumference integrally with a balance ring attached to the upper end of the washing and dewatering tub, and a water supply hole formed on the lower surface thereof; d) An outer tub cover attached to the inner periphery near the upper end of the outer tub, wherein a water receiving portion is formed below a water discharge portion of the water inlet, and the water receiving portion faces the upper surface of the water channel at the water receiving portion. An outer tub cover provided with a water injection opening at a location. 2. The balance ring is divided into a plurality in the radial direction, and one of the divided rings is opened to form the water channel, and the other divided hollow body is used as a balancer. 2. The washing machine according to 1.