JP3258798B2 - 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, and more particularly to an improved structure of a vibration-suppressing dewatering tub ring provided at an open end of a washing and dewatering tub.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Laid-Open Publication No. 59-40089, a fully automatic washing machine is provided with a dewatering tub ring filled with a liquid at the open end of the washing and dewatering tub, and the washing and dewatering tub is provided. At the time of spin-drying at high speed, the washing and spin-drying tub is prevented from vibrating largely due to the deviation of the laundry inside, thereby reducing the vibration and noise. Further, a plurality of reinforcing ribs are radially and symmetrically arranged in the inside.

Recently, as shown in JP-B-63-11037, an input device such as a soft finish is provided in the dewatering tank ring, and the input device is partitioned into a plurality of chambers communicating with each other, and is moved a plurality of times. At the time of the dehydration step after each rinsing, a mechanism is provided so that the soft finish is sequentially moved to the next room by the centrifugal force and put into the washing tub at the last rinsing.

[0004] Here, in the case of a dewatering tank ring provided with a finishing agent dispenser, a large number of partition walls having different shapes and sizes are formed vertically and horizontally in the finishing agent dispenser, resulting in a complicated structure. See FIG. 3 of JP-B-63-11037).

Therefore, in this dewatering tank ring, the finishing agent dispenser having such a complicated structure has a high strength. However, in the conventional dehydrating tank ring, its strength is high. The reinforcement ribs were not arranged in consideration of the difference.

That is, as shown in FIG. 8, the dewatering tank ring 1 has a configuration in which the reinforcing ribs 10 are arranged at substantially equal intervals over the whole. Therefore, the strength of the dewatering tank ring 1 is not averaged, and the strength is relatively weak at the opposite portion 1c facing the finishing agent charging section 2.

The dewatering tank ring 1 is made of a resin having a hollow portion 4 inside, and an appropriate fluid such as water is sealed in the hollow portion 4. Further, in FIG.
The numeral 6 indicates the laundry in the washing / dewatering tub.

Further, FIG. 9 shows a washing and dewatering tub 7 made of synthetic resin provided with the above-mentioned conventional dewatering tub ring 1. The washing and dewatering tub 7 is rotatably disposed in an outer tub (not shown), and has a pulsator (not shown) which rotates at the bottom of the tub 7 during washing. The washing and dewatering tub 7 is rotated at a high speed by transmitting a rotational driving force at the time of dehydration, and the water of the laundry 6 in the tub 7 is centrifugally acted upon by the countless dewatering small holes 8 formed on the tub peripheral surface 7b. Dehydrate.

[0009]

However, since the conventional dewatering tub ring with a finish agent inlet has a structurally strong or weak portion as described above, the laundry in the washing and dewatering tub is deviated during dehydration. When an eccentric load is applied, in the washing and dewatering tub, as shown in FIG. 8, the opposite portion 1 </ b> C, which is weaker in strength than the finish agent input unit 2 having sufficient strength, is more greatly deformed.

That is, the washing and dewatering tub 7 is biased as shown by a solid line in which the portion 1C on the opposite side to the finishing agent charging section 2 is bent outward and swells as compared with the normal state of the circular shape shown by the dotted line in FIG. Cause deformation. The degree of the deformation and the length of the arrow are shown. When such deformation occurs, there is a problem that the outer tank is more easily hit and the vibration and noise increase.

In addition, if stress is repeatedly applied to such a portion during long-term use, the portion is bent and the life of the product is shortened.

The present invention has been made in view of the above-mentioned problems, and a reinforcing rib is arranged inside a dewatering tub ring so as to be balanced with the strength of a finishing agent charging portion so that the strength of the entire dewatering tub ring is averaged. Fully automatic, which can prevent the deformation of the washing and dewatering tub, improve the product life and suppress the phenomenon of contact with the outer tub, reduce vibration and noise, and enhance the washing function It is intended to provide a washing machine.

[0013]

SUMMARY OF THE INVENTION The present invention provides an outer tub elastically suspended and supported in a machine frame, a washing and dewatering tub rotatably disposed in the outer tub, and a washing and dewatering tub. A dewatering tank ring made of resin is provided at an upper end opening of the water tank and a liquid is sealed therein, and a finishing agent charging section is provided at a predetermined location in the dewatering tank ring, and inside the dewatering tank ring. In a fully automatic washing machine having a structure in which a plurality of reinforcing ribs are integrally formed over the entire circumference, the thickness of the reinforcing ribs in the vicinity of the finishing agent introduction section is reduced.
And reinforcement of the portion facing the finishing agent charging section.
The thickness of the rib is increased .

[0014]

The dewatering tub ring provided at the upper end of the washing and dewatering tub is arranged so that the reinforcing ribs therein maintain the strength of the entire dewatering tub ring in a balanced manner. Therefore, the dewatering tub ring reduces the deformation of the washing and dewatering tub due to the eccentric load during the dewatering operation, and further reduces the contact between the washing and dewatering tub and the outer tub caused by the deformation, thereby eliminating noise and vibration. Dehydration operation smoothly.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. The same or equivalent components as those of the conventional device shown in FIGS. 8 and 9 are denoted by the same reference numerals.

First, an outline of the fully automatic washing machine 15 will be described with reference to FIG. Reference numeral 16 denotes a machine frame, and an outer tub 19 is suspended and supported by a hanging rod 18 in the machine frame 16, and the washing and dewatering tub 7 is rotatably arranged in the outer tub 19. At the opening end of the washing and dewatering tub 7, a dewatering tub ring 1 in which liquid is sealed is provided. Reference numeral 22 denotes a motor whose driving force is a V-belt 23.
Thus, the pulsator 25 rotates during washing. On the other hand, at the time of dehydration in the washing step, the washing and dewatering tub 7 itself rotates at a high speed, and blows out the moisture of the laundry in the innumerable dewatering small holes 8 provided on the peripheral surface of the washing and dewatering tub 7 for dehydration.

Here, FIGS. 1 and 3 show a dewatering tank ring 1 according to the present invention having a structure in which the finishing agent charging section 2 is provided in the dewatering tank ring 1.

As shown in FIG. 1, the reinforcing ribs 10 provided radially inside the dewatering tank ring 1 are sparsely arranged with a large interval between the reinforcing ribs 10 in the vicinity of the finishing agent charging section 2 having a high strength. And, the interval is narrowed as it goes to the opposite portion 1C, which is the weakest in strength, facing the finishing agent charging section 2, and is arranged densely.

Further, in addition to the arrangement of the reinforcing ribs 10 which are made dense and dense, in order to balance the overall strength of the dewatering tank ring 1, the length and the thickness of the reinforcing ribs 10 are provided. The position is different.

That is, the reinforcing rib 10a in the sparse position like the reinforcing rib 10a in FIG. 3 is thin (d1) and has a low mounting height from below (h1) as shown in FIG. Those at close positions, such as the reinforcing ribs 10c, have a thickness (d3)
And its mounting height is high (h3) as shown in FIG. Then, the two ribs 10a, 10c
Of the reinforcing rib 10b at an intermediate position of the intermediate thickness (d
In 2), the mounting height is also formed at an intermediate height (h2) as shown in FIG.

Therefore, in the thickness, the reinforcing rib 10c
(D3)> reinforcement rib 10b (d2)> reinforcement rib 10a
(D1), and at the mounting height, the reinforcing rib 10c (h3)> the reinforcing rib 10b (h2)> the reinforcing rib 1
0a (h1).

As described above, the reinforcing ribs 10 radially provided inside the dewatering tank ring 1 in which the liquid is sealed are arranged in different shapes such as the mounting position and the thickness and the length.
The strength is also balanced with the finishing agent input section 2 having high strength,
The balance of the strength of the entire dewatering tank ring 1 and the dewatering tank ring 1 whose strength is increased as a whole can be obtained.

As shown in FIG. 3, the finishing agent charging section 2 has a plurality of chambers 15a, 15b, 15c, and 15d formed by a partition wall 14.
It is divided into. Here, the finishing agent is put into, for example, the room 15a before the washing is performed. In the rinsing step in which the rinsing-dehydration is repeated several times, each time the washing / dehydrating tub 7 rotates by dehydration, the centrifugal force acts, for example, the chamber 15a → 15b → 15
Then, the finishing agent is charged into the washing and dewatering tub 7 from the chamber 15d at the time of the last rinsing.

Therefore, according to the dewatering tank ring 1 of the structure of the present invention,
Since the strength of the entire dewatering tub ring is increased, when the washing and dewatering tub 7 is dehydrated at a high speed, there is no uneven deformation such that a certain part projects as in the related art.

Therefore, contact with the outer tub of the washing and dewatering tub 7 can be avoided, vibration and noise can be minimized, and a smooth dewatering operation can be performed.

[0026]

As described above, according to the present invention, the deformation of the washing and dewatering tub due to the eccentric load during the dewatering operation can be easily achieved by arranging the reinforcing ribs so as to balance the strength of the entire dewatering tub ring. This can improve the life of the product and solve the problem that the washing and dewatering tub comes into contact with the outer tub, generating vibration and noise.

Also, since the washing and dewatering tub is small in deformation, it is possible to produce a product with a minimum clearance without providing an extra gap with the outer tub, and to increase the diameter of the washing and dewatering tub to increase Increased capacity, shortened washing time, etc., enable efficient washing, and minimize waste water between washing and dewatering tub and outer tub. can do.

[Brief description of the drawings]

FIG. 1 is a plan sectional view showing the internal structure of a dewatering tank ring according to the present invention.

FIG. 2 is a configuration front view of a washing and dewatering tub provided with the same dewatering tub ring.

FIG. 3 is a cross-sectional plan view illustrating the internal configuration of the dewatering tank ring in more detail.

FIG. 4 is a side sectional view of a dehydration tub ring in a portion where a reinforcing rib 10c is provided in FIG. 3;

FIG. 5 is a side sectional view of a dewatering tank ring at a portion where a reinforcing rib 10b is provided in FIG. 3;

FIG. 6 is a side sectional view of a dewatering tank ring in a portion where a reinforcing rib 10a is provided in FIG. 3;

FIG. 7 is a longitudinal sectional view schematically showing the internal structure of the fully automatic washing machine.

FIG. 8 is a plan cross-sectional view of a conventional dewatering tub ring for explaining that tub deformation occurs due to an eccentric load of laundry.

FIG. 9 is a front view showing the configuration of a washing and dewatering tub provided with the conventional dewatering tub ring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dehydration tank ring 2 Finishing agent charging part 6 Laundry 7 Washing and dehydration tank 10 Reinforcement rib

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-56-66295 (JP, A) JP-A-59-40089 (JP, U) JP-B-63-11037 (JP, B1) JP-B-60-60 75 (JP, B1) (58) Field surveyed (Int. Cl. ⁷ , DB name) D06F 37/12

Claims (1)

(57) [Claims] 1. An outer tub elastically suspended and supported in a machine frame, a washing and dewatering tub rotatably disposed in the outer tub, and provided at an upper end opening of the washing and dewatering tub. A dewatering tank ring made of resin in which liquid is sealed is provided, and a finishing agent charging section is provided at a predetermined position in the dewatering tank ring, and a plurality of reinforcing ribs are provided around the entire circumference inside the dewatering tank ring. In a fully automatic washing machine having an integrally formed structure, the thickness of the reinforcing ribs near the finishing agent charging section is reduced.
In addition, the thickness of the reinforcing rib at a portion facing the finishing agent charging section
Fully automatic washing machine characterized by thickening .