JPS6326677B2 - - Google Patents

Description

[Detailed Description of the Invention] Field of Application of the Invention The present invention includes a washing and dehydrating tank inside a washing receiving tank,
The present invention relates to a one-tub type dehydrating washing machine equipped with an agitating blade at the center of the bottom of the washing/dehydrating tub.

Conventionally, in this type of one-tub type dehydrating washing machine, when the washing tub 1 is elastically supported on the washing machine outer frame 2 using the vibration-proof support mechanism 3, as shown in FIG.
A vibration-proof support mechanism 3 is received at an appropriate location on the bottom or outer peripheral side of the washing tub 1, and is reinforced and fixed with a hanging metal fitting 4 to withstand the static or dynamic load of the internal mechanism of the washing machine. Since a fixing fitting 6 is required to fix the hanging fitting part 4 to the washing tub 1, the number of parts increases and manufacturing and assembly costs increase.Also, the metal fitting itself requires strength, which increases material costs. There were drawbacks such as being expensive.

Further, as shown in FIG. 3, in the case where the washing tub 1 and the hanging fitting part 4 are integrally molded from synthetic resin, this receiving part 1 is designed to reinforce the anti-vibration support receiving part 5 corresponding to the hanging fitting part 4. There is also a reinforcing part 6 that is integrally molded to sandwich part 5 and reinforce only the lower part of the receiving part or across the upper and lower parts of the receiving part, but when used at a water temperature of about 60°C during washing, However, when used at a water temperature of 80°C, the laundry receptacle will undergo creep deformation due to thermal stress if used for a long time. As a result, the gap G between the washing and dewatering tub 10 and the washing tub 1 becomes narrower, and in some cases, the amount of deformation is large and G=0. Therefore, depending on the size of the unbalanced laundry or its position during spin-drying, the washing/spin-drying tub 10 may hit the laundry receiving tub 1 and make an abnormal noise, or the spin-drying rotation may be locked, and the temperature of the motor 11 may rise. The problem may even develop.

Purpose of the Invention The present invention was invented in view of the above points,
SUMMARY OF THE INVENTION An object of the present invention is to provide a single-tank dehydrating washing machine having a laundry receiving tank that can keep the amount of thermal deformation small even when used under high-temperature conditions for a long period of time, and that can be washed without any trouble in actual use. .

Summary of the Invention The present invention solves the problem that the laundry receptacle of a single-tub dehydration washing machine, in which the hanging metal part is integrally molded, undergoes creep deformation under long-term high-temperature usage, resulting in a narrowing of the gap G between the laundry receptacle and the washing/dehydration tank. was confirmed through experiments, and the amount of creep deformation was kept extremely small.
In order to avoid problems during actual use, the bearing section that receives the anti-vibration support mechanism section is sandwiched between 2.
The vertical reinforcing part of the book is extended from the top to the bottom of the side of the washing tub, and the horizontal reinforcing parts spanning between these two vertical reinforcing parts are also integrally molded from synthetic resin, and the bending moment is reduced. In particular, in order to increase the strength near the bearing part, the pitch of the lower horizontal reinforcing part is made smaller, and the pitch of the horizontal reinforcing part is made larger in the upper part where the influence of bending moments is less.

More specifically, the present invention includes: an outer frame, a laundry receptacle placed within the outer frame, a washing and dehydration tank rotatably provided within the laundry receptacle, and a rotatably provided washing and dehydration tank. a stirring blade that is
a balancer provided on the upper end side of the washing and dehydrating tank; a motor attached to the lower outer surface side of the washing receiving tub and driving the washing and dehydrating tank and the stirring blade;
It consists of an anti-vibration support mechanism section consisting of a plurality of hanging rods hanging from the upper side of the outer frame, and a bearing section formed on the outer periphery of the washing tub to support the anti-vibration support mechanism section,
In a single-tank dehydrating washing machine in which the laundry tub and bearing part are integrally formed from synthetic resin, two vertical reinforcing parts running up and down are provided to sandwich the bearing part from both sides. The shape is shaped like a rib that rises outward from the surface, and above the bearing part there are multiple horizontal reinforcing parts spanning between vertical reinforcing parts, and these horizontal reinforcing parts and vertical reinforcing parts are washed with synthetic resin. In addition to being formed integrally with the receiving tank,
The horizontal reinforcement part is characterized by having a narrow pitch on the side closer to the bearing part and a rough pitch on the side farther from the bearing part.

Embodiment of the Invention An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a washing tank, in which water is stored for washing or rinsing. 2 is an outer frame, and 3 is a vibration-proof support mechanism section, which is supported by a bearing section 5 formed integrally with the washing tub 1 and suspended from the outer frame 2. Reference numeral 8 denotes an internal mechanism section, which includes a stop device and a motor 11 that control the rotation speed of the stirring blade 12 during washing and the rotation speed of the washing/dehydration tank 10 during spin-drying.
Contains. Therefore, in this configuration, the maximum load applied to the bearing part 5 is (washing tank 1 and water inside it) + (washing and dehydration tank) + (internal mechanism part) ≒ 60 to 80 kg
Therefore, if this is supported at four locations, a load of approximately 15 to 20 kg will be applied to one bearing portion 5. Although the calculation of the bending moment and stress due to this load will be omitted, the point of the present invention is to disperse this bending moment and stress and to minimize the amount of creep deformation of the laundry receiving tub 1. That is, by extending the vertical reinforcing part 6 that sandwiches the bearing part 5 to the top of the washing tub 1 at a height H, and also integrally molding the horizontal reinforcing part 9 that spans between these two vertical reinforcing parts 6, The stress can be reduced by increasing the section modulus Z of the reinforcing portion that supports the bearing portion 5.
Also, as shown in Figure 4, the pitch of the horizontal reinforcement
By setting P ₁ (lower portion) < P ₂ (upper portion), the stress due to the load applied to the bearing portion 5 can be further reduced.

In one embodiment of the present invention, the horizontal reinforcing part 9 is fixed only within the vertical reinforcing part 6, but the horizontal reinforcing part 9 may extend outside the vertical reinforcing part 6. If reinforced in an annular shape, the rigidity of the washing tub 1 will further increase and it will be strong against thermal stress.

Effects of the Invention As described above, the present invention provides an outer frame, a laundry receptacle placed within the outer frame, a washing and dehydrating tank rotatably provided within the laundry receptacle, and a washing and dehydrating tank that is rotatably provided within the laundry receptacle. A rotatable stirring blade, a balancer installed at the upper end of the washing and dehydrating tank, a motor attached to the lower outer surface of the washing tank and driving the washing and dehydrating tank and the stirring blade, and a motor that drives the washing and dehydrating tank and the stirring blade. It consists of an anti-vibration support mechanism consisting of a plurality of hanging rods hanging from the top and a bearing formed on the outer periphery of the laundry tub to support the anti-vibration support mechanism.The laundry tub and the bearing are integrated with synthetic resin. In a single-tank dehydrating washing machine formed in A plurality of horizontal reinforcing parts are formed above the bearing part to extend between the vertical reinforcing parts, and these horizontal reinforcing parts and vertical reinforcing parts are integrally formed with the washing tub using synthetic resin. The part is characterized by having a narrow pitch on the side closer to the bearing part and a rougher pitch on the side farther from the bearing part.

This configuration has the following advantages.

(1) There is no need for a separate metal hanger, reducing the number of parts and improving productivity.

(2) It is possible to obtain a product with less thermal deformation when using hot water without using metal hanging fittings.

(3) Due to vibrations during dewatering, the two vertical reinforcing sections are subjected to bending stress in the vertical direction that causes them to wave from side to side when viewed from the outside. When the rib-shaped vertical reinforcing section that rises outward is tilted due to this bending stress, the length of the vertical reinforcing section is substantially reduced, so the rib's function as a vertical reinforcing section is reduced, and the wall surface of the washing tank may bend inward. If it bends, it will come into contact with the washing and dehydrating tub that is spinning.

However, since the two vertical reinforcing sections are connected by a plurality of horizontal reinforcing sections, the vertical reinforcing sections do not tilt even when subjected to bending stress that swings in a waveform as described above. Since the function of the vertical reinforcing portion as a rib does not deteriorate, the wall surface of the washing tub does not bend inward and does not come into contact with the washing/drying tub.

(4) The bending stress that oscillates in a waveform is strong in the vertical reinforcement part near the bearing part. Therefore, the pitch of the horizontal reinforcing parts closer to the bearing part is narrower than that of the horizontal reinforcing parts further away, so that the vertical reinforcing parts can withstand strong bending stress.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of a conventional one-tub type dehydrating washing machine having an integrally molded laundry receptacle, and Fig. 2 is an enlarged sectional view of essential parts of a conventional single-tub dehydrating washing machine with a separate bearing part. FIG. 3 is an enlarged sectional view of the main part of FIG. 1, and FIG. 4 is a perspective view of the washing tank of the present invention. DESCRIPTION OF SYMBOLS 1... Laundry receiving tub, 2... Outer frame, 3... Vibration isolation mechanism section, 5... Bearing section, 6... Vertical reinforcement section, 9... Horizontal reinforcement section.

Claims (1)

[Scope of Claims] 1. An outer frame, a washing tub placed within the outer frame, and a washing/drying tub rotatably provided within the washing tub;
A stirring blade rotatably installed in the washing/dehydrating tank, a balancer installed at the upper end of the washing/dehydrating tank, and a balancer installed on the outer surface of the lower part of the washing tank and driving the washing/dehydrating tank and the stirring blade. It consists of a motor, an anti-vibration support mechanism consisting of a plurality of hanging rods hanging from the top of the outer frame, and a bearing formed on the outer periphery of the laundry tub to support the anti-vibration support mechanism. In a single-tank dehydrating washing machine whose parts are integrally made of synthetic resin, two vertical reinforcing parts running up and down are installed so as to sandwich the bearing part from both sides, and these vertical reinforcing parts extend outward from the outer peripheral surface of the washing tank. It has a rib-like shape that stands up, and above the bearing part, there are multiple horizontal reinforcing parts spanning between the vertical reinforcing parts, and these horizontal reinforcing parts and vertical reinforcing parts are integrated with the laundry tub using synthetic resin. A one-tank type dewatering tank machine characterized in that the horizontal reinforcement part has a narrow pitch on the side near the bearing part and a rough pitch on the side far from the bearing part.