JPS62172992A - One-tub electric washing machine - 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 [Object of the Invention] The present invention relates to an improvement of a single-tub type electric washing machine. Automated single-tank dehydrating washing machines have recently become popular, but older single-tank electric washing machines remain in strong demand because they are simple in structure and operation, and can be obtained at low cost. Improvements are requested. The present invention answers this need. A conventional electric washing machine of this type, which is an object of the improvement of the present invention, will be explained with reference to FIG. 1 is the outer tank of the main body, leaving space at the rear and bottom and the inner tank (
(washing tub) 2. The inner tank 2 has a rotary blade 3 on its rear wall, the rotary shaft 4 of which is supported by a bearing 6 in the rear space 5, and is installed in the bottom space 1° via an impeller pulley 7, a belt 8 and a motor pulley 9. The rotary shaft 12 of the motor 11 is connected to the rotary shaft 12 of the motor 11 .

13 is a drain port provided at the bottom of the inner tank 2; 14 is a drain valve; 1
5a is a drainage hose, and 16 is a time switch.

By the way, in the above-mentioned conventional washing machine, the laundry put into the inner tub 2 is washed by being given multiple rotations by the water flow generated by the rotation of the rotary blades 3, but the inner tub 2 is rectangular and has corners. The corners prevent the laundry from rotating smoothly, making it difficult to wash the laundry effectively. In addition, if the laundry cannot be rotated smoothly even if you increase the size of the rotary blade 3 or increase the number of rotations to make the water flow more powerful in order to improve the cleaning effect, wash the laundry that has become entangled in the rotary blade 3. Objects may act as brakes and burn out the motor.

Furthermore, since the bottom surface of the inner tub 2 is flat, if the laundry comes in close contact with the drain port 13 provided on the flat bottom surface and stops, water cannot be drained. An object of the present invention is to provide a single-tank electric washing machine that solves the above-mentioned problems. An inner tank is housed inside the tank with a space left at the rear and bottom, a rotary blade is attached to the rear wall of the inner tank, and the rotating shaft of the motor is provided in the bottom space of the outer tank, and a pulley and In the structure connected via a belt, the inner tank has a rectangular cross section in the vertical and horizontal directions, the rotation axis of the rotor is located at the center of the rear wall in the longitudinal direction, and the inner tank has a rectangular cross section in the vertical and horizontal directions, The bottom surface of the tank has a semicircular shape centered on the axis of rotation of the rotary blade, and has a plurality of continuous mountain-shaped irregularities on its surface, and the rotor blade has a plurality of agitating blades standing upright around it. It is characterized by having a rod and a and.

An embodiment of the invention will be described with reference to FIGS. 1 and 2. FIG. In the figure, except for the inner tank 2 and the rotor blade 3, the other parts 1 to 16 are different from the conventional example shown in FIG. 3 in many respects. The inner tank 2 of the present invention has a rectangular cross section in the vertical and horizontal directions, and the rotation axis 4 of the rotor blade 3 is located at the center of the rear wall in the longitudinal direction. It is formed in a semicircular shape with a center, and its surface is provided with a plurality of continuous chevron-shaped unevenness 17. In this mountain-shaped unevenness 17, the oblique side of the mountain is at an angle α to the vertical line and an angle β to the horizontal line.
The angles α of the peaks and valleys are obtuse angles. Further, the rotary blade 3 of the present invention has a plurality of stirring rods 18 (two in the embodiment shown in the drawings) standing upright around the rotary blade 3. The bottom of the inner tub 2 of the machine has a semicircular shape centered around the rotation axis 4 of the rotor 34, so the water flow generated by the rotation of the rotor 3 circulates smoothly along the bottom, preventing the laundry from spreading or spreading. Since they are stirred by the stirring rod 18 and rotate smoothly without becoming entangled with each other, cleaning can be carried out effectively.

The nine concave and convex portions 17 provided on the bottom of the inner tub 2 create turbulence in the water flow to promote dissolution of the detergent and also rub the laundry to improve the cleaning effect. In this unevenness 17, the hypotenuse of the mountain is at an angle α with respect to the vertical line.
Since it has an inclination of , when the mold for molding the inner tank 2 is configured by X%Y, it has the effect of making the mold cutting operation in the direction of the arrow Z smooth and easy. Further, the slope of the angle β with respect to the horizontal line has the effect of facilitating the flow of washing water in the valley. The bottom surface of the drain port 13 is formed in a semicircular shape and has unevenness 17, so that a gap is created between the drain port 13 and the laundry.
The laundry won't get stuck and become clogged. Therefore, it has the effect of achieving the purpose of the invention.

[Brief explanation of drawings]

Figure 1 and 2 are diagrams showing an embodiment of the one-tub electric washing machine of the present invention, in which (a) is a front sectional view, (b) is a side sectional view, (/→ is a plan sectional view, and ) is the main part. Perspective view Figure 2: An enlarged sectional view of the inner tank of the one-tub electric washing machine of the present invention Figure 3: A sectional view of the conventional single-tank electric washing machine, where (a) is a front view and (b) is a front view. Side view 1...Main body outer tank, 2...Inner tank, 3...Rotor blade, 4
... Rotating shaft, 5... Rear space, 6... Bearing, 7-
・Impeller pulley, 8...Belt, 9...Motor pulley, 10...Bottom space, 11...Motor, Tsuji...
・Rotating shaft, 13...Drain port, 14-...Drain valve, 15
...Drainage hose, 16...Time switch, 17.
...Irregularities, 18...Stirring bar Figure 1 (A)
(B) %2 Figure 3 (B) (B)

Claims (2)

[Claims] (1) An inner tank is housed inside the outer tank of the main body with space left at the rear and bottom, a rotary blade is attached to the rear wall of the inner tank, and a motor is provided with its rotating shaft in the bottom space of the outer tank. In the structure connected to the rotating shaft via a pulley and a belt, the inner tank has a rectangular cross section in the vertical and horizontal directions,
The rotation axis of the rotor blade is located at the center of the rear wall in the longitudinal direction, and the bottom surface of the inner tank forms a semicircle centered on the rotation axis of the rotor blade, and a plurality of continuous grooves are formed on the surface of the inner tank. 1. A single-tub electric washing machine, wherein the rotary blade has a plurality of stirring rods standing upright around the rotor blade. (2) The plurality of mountain-shaped irregularities are characterized in that the hypotenuses of the mountains are inclined with respect to the horizontal line and the vertical line, and the angles of the peaks and valleys are obtuse angles. Single-tub electric washing machine.