JPS59135095A - Stirring blade of washer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a stirring blade for a washing machine.

Conventional structure and its problems Traditionally, in Japan, so-called whirlpool washing machines have been put into practical use, in which stirring blades are installed at the bottom of the washing tub, and the rotation of the blades generates a whirlpool agitating water flow. ing.

The stirring blade (4)' of the washing machine is generally called a pulsator, and as shown in FIG. 1, it is attached to the bottom of the washing tub (2)' so as to slightly protrude into the tub.

In this cleaning method that uses a rotating pulsator, the cleaning power is very high in the parts of the clothes that are directly exposed to the pulsator, but on the other hand, the cleaning power is weaker for the parts of the clothes that are away from the agitating blades. There was a problem in that the unevenness increased and the sagging of clothing in the area that directly contacted the stirring blades increased.

However, the outer diameter of the pulsator is relatively small and the rotation speed is usually about 300 revolutions per minute or more, making it difficult to uniformly wash the clothes in the washing tub. Therefore, in order to wash clothes at a distance of 9 points from the pulsator, the clothes near the pulsator must be twisted and tangled to some extent to apply agitation force to the entire clothes in the washing tub. I couldn't help but notice that my clothes were becoming more and more kinked and tangled.

In the United States, it is still popular to install a stirring blade called an agitator at the bottom of the washing tub, and to wash the clothes by rotating the agitator within one rotation. This method has less uneven washing, less damage to clothes, and less kinking, but its overall cleaning power is weak, and the agitating blades are equipped with rod-shaped objects that reach the upper area of the washing tub, making it easy to put in and take out laundry. The problem was that it was difficult to handle unless the washing tub was large and had a relatively large capacity.

Purpose of the Invention The present invention solves the above-mentioned conventional drawbacks, ensures good washability, provides a wide range of detergency to washed clothes, reduces uneven washing, and also reduces twisting and tangling of clothes. The present invention aims to provide an agitating blade that improves overall washing performance.

Structure of the Invention The agitating blade of the washing machine according to the present invention has a main structure in which a plurality of radial peaks are provided on a base that rises outward in a curved surface from a horizontal plane located at a lower level than the outer periphery and reaches the outer periphery. A stirring blade section is provided with a plurality of ridges projecting outward on a substantially conical base column at the center thereof, and a plurality of ridges projecting outward are provided as a main column section, and the ridges of the main column section are the same as those of the main stirring blade. It is located in the valley between the two.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

Figure 2 is a sectional view showing the overall structure of a fully automatic washing machine equipped with the agitating blade of the present invention, in which (1) is the main body outer plate, and (2) is a washing tub with a large number of dehydration holes (3). Dehydration tank (hereinafter referred to as washing tank). (4) is a stirring blade rotatably attached to the bottom of the washing tub (2), (5) is a water tank, (6) is a balancer for balancing during spin-drying, and (7) houses a switch, etc. This is the operation panel. (8) is a motor, and the rotation of the motor (8) is decelerated through the pulley (9), the belt (10), the pulley (1υ), and the deceleration drive mechanism (12), and the rotation of the motor (8) is reduced to the stirring blade (4). It can be conveyed to (
131 is a damping rod that absorbs vibrations of the ice-free water, ■ is a rod for hanging the structure, 5) is a drain valve, and (I6) is a drain hose.

The stirring blade (4) will be explained based on FIG. 3 and subsequent figures.

This stirring blade consists of a main stirring blade (1η), a main pillar part (18), and a force 1, each of which is molded separately, and the main stirring blade α7N.
-1 A plurality of radial peaks (22) are provided on the base (2I) that rises outward on a curved surface (20) from a horizontal plane 09) located at a lower position than the outer circumference and reaches the outer circumference, and these peaks (22 )
The cross section of the cross section changes as shown in Fig. 6C9D, E, F, G, and H.

Here, the cross-sectional positions are the positions C to H along the line A-0 in FIG. 3, and are shown with the same reference numerals in FIG. 6.

Next, the main pillar part (181 is the diameter / from the bottom to the top)
A hollow, almost conical base pillar (23) with a mountain C (a)
The mountain (24) is the base pillar (23).
It protrudes outward from the top and is low at the top and high at the bottom, and the ridges (24) of the base pillar (23) form the valleys for the ridges (22) and 1 of the ridges of the main stirring blade 07). The lower end is in contact with the base (21).

Here, the main column part 1181 is shown to be formed separately from the main stirring g (171, but the two may be formed integrally.)
] When molding the main stirring blade (17) as shown in the figure.
Tighten with screws etc. from the back side. In this case, the lower part of the main column has an uneven shape (25) that matches the unevenness of the upper surface of the main stirring blade (17I), as shown in Fig. 5.
A cap (26) is removably fitted to the upper end of the main column (18), and when tightening the main stirring blade to the rotating shaft of the washing machine, this cap (z6) is fitted to the rotating shaft at 9. Joint (2
′? Fit the l and tighten with screws.

The stirring blade having the above-mentioned configuration is reversed from clockwise rotation to fixed rotation to counterclockwise rotation, and the rotation speed is I) 2o per minute.

Rotate at a relatively low speed or less.

In general, the cleaning effect that is imparted to the clothes being washed can be broadly divided into two types: the effect of the water flow caused by the rotation of the agitating blade, and the effect that the piles of the agitating blade directly move the clothes, but the agitating blade of the present invention As shown by the arrows in Figures 2 and 4, the water flow generated from the hemispherical surface of the bow core descends to reach the flat surface, and from there rises along the wall of the washing tub. As it rises, it becomes a large arcing water flow at the top. The characteristic of this stirring blade is that it spreads outward from the base from the center to the outer periphery, creating a large circular arc of water as it rises. This creates a large shi, which is different from the formation of a small swirling flow. In particular, the main column has an almost cylindrical shape with a curved surface at the bottom and expands outward.
The base of the main stirring blade has a curved surface that rises outward from the horizontal part, so the water flow that descends from above spreads outward and becomes a rising water flow, which requires a smooth change of direction. This water flow improves the cleaning effect.

However, since the main pillar part is shaped to protrude inward from the washing tub, the agitation effect on the clothes in the center and upper part of the washing tub is better than that of conventional whirlpool washing machines.

Furthermore, since there is no bar-like object in the upper part 1 of the washing tub unlike in agitator-type washing machines, there is no need to put in or take out the laundry or get stuck.

In addition, the outer diameter d+ of the lower part of the main pillar part crest (foundation) is approximately 1/2 of the outer diameter C12 of the main stirring blade part, and the height mirror of the main pillar part is the main pillar part crest (24). Good performance was shown when the diameter was approximately equal to or less than the outer diameter surface below. Further, good results were obtained when the height of the main column was approximately equal to or less than the lower outer diameter d. However, good performance was obtained when the horizontal part of the base was set approximately 15% below the outer diameter of the outer circumferential surface.

Although the overall configuration has been described with reference to a so-called fully automatic dehydrating washing machine, a so-called two-tub type washing machine can also have similar effects.

Effects of the Invention The stirring blade of the washing machine of the present invention consists of a main stirring blade part and a main pillar part, and the main blade part is provided with a plurality of radial peaks on a base that rises in a curved surface outward from a horizontal plane. The main column is a base column with a curved line that expands from the top to the bottom, with multiple outlets protruding from the base to smoothly channel the water flowing down from above from the outside. The direction of the water flow is changed to an upward direction, which increases the influence of the water flow compared to conventional products, reduces uneven washing and sagging of clothes, and provides good washing performance.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing the overall structure of a conventional washing machine, Fig. 2 is a cross-sectional view of the overall structure showing an embodiment of the present invention, and Fig. 3 is a cross-sectional view showing an embodiment of the stirring blade of the washing machine of the present invention. Enlarged plan view, 4th
The figure is an enlarged sectional view of the same, Fig. 5 is an enlarged perspective view of the main column, and Fig. 6 is an enlarged perspective view of the main column.
The figure is a sectional view showing the mountain shape of the main stirring blade at the position shown in FIG. 3. '(2)...Washing tub, (4)...Agitation blade,
07) Main stirring blade part, (18) Main column part, (19)
... horizontal plane, f201-curved surface, (2]] = base, (
z2)...Mountain of main stirring blade, (23)...Base pillar, (24)
...The mountain of the main pillar. Agent Patent Attorney Oshima - Figure 1, Figure 2, Figure 3, Figure 4, Figure 6, Figure 6 -

Claims (3)

[Claims] (1) As an agitating blade that is rotatably attached to the bottom of the washing tub, multiple radial peaks are formed on the base that rises outward in a curved surface from the horizontal surface located lower than the outer periphery and reaches the base. A main stirring blade is provided, and a base pillar with a substantially conical shape at the center of the main stirring blade has a large diameter at the bottom, and protrudes outward from the base pillar, and is located in the valley between the peaks of the main stirring blade. An agitation blade for a washing machine, which is composed of a main pillar part having a plurality of positioned peaks. (2) As a support section, the outer diameter d below the peak of the support section]
The agitation blade for a washing machine according to claim 1, wherein d2 is approximately 1/2 of the outer diameter d2 of the main agitation blade. (3) The washing machine according to claim 1, wherein the horizontal plane of the main agitating blade is approximately 15% lower than the outer diameter of the main agitating blade with respect to the height of the outer circumferential surface of the main agitating blade. stirring blade.