JPH0525599Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a washing machine having an agitating blade at the inner bottom of the water tank.

Conventional Structure and Problems Recently, in this type of washing machine, the bottom surface of the washing tub A is made horizontal and a large agitating blade B is installed approximately in the center of the washing tub A, as shown in Figs. 1 and 2. A device has been developed that aims to reduce the amount of tangling and damage to the laundry by providing the stirring blade B with a shorter operating and resting time and applying a strong stirring force to the laundry in small increments. However, with this configuration, when there is a small amount of laundry, the agitation force is strong, causing the laundry to be moved momentarily by a large amount, which causes water in the washing tub A to flow out of the washing machine.

Purpose of the Invention The present invention takes these conventional problems into consideration and provides a washing machine in which less water spills out of the washing machine, regardless of the amount of laundry.

Structure of the Device In order to achieve the above object, the device has four substantially straight sides, four arcuate corners connecting these sides, a stirring blade provided at the bottom in the center, and four flat walls. The washing tub has a structure in which a plurality of protrusions are provided at the lower end, and even when a small amount of laundry is washed, the movement of the laundry is suppressed by the protrusions, and the amount of water in the tub is reduced. This reduces the amount of water flowing out of the tank.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In Figures 3 to 8, 1 indicates four vertical walls 1a made of almost straight lines, and 4 connecting them.
The washing tub 1 has an open top end and consists of two arc-shaped corner walls 1b, and a protrusion 2 that projects toward the inside of the tub is provided at the lower part of the vertical wall 1a of the washing tub 1. A rotatable stirring blade 3 is provided approximately at the center bottom of the washing tub 1, and the stirring blade 3 is connected to a motor and rotated by driving the motor. 4 is a drain port.

To explain the operation in the above configuration, when there is not much laundry in the washing tub, as shown in Figs. The laundry tries to rotate violently, but the protruding part 2 provided below the vertical wall of the washing tub hits the protruding part 2 as shown by the arrow in the figure, suppressing the rotational force of the laundry, and the water surface as the laundry rotates. The vertical movement of the tank is also suppressed, and water in the tank is less likely to jump out of the tank. This protrusion 2 is provided only on the vertical wall closest to the rotation center of the laundry, and is not provided on the corner wall, so the lower part of the washing tub is more rectangular, so there is no restriction on the rotation of the laundry. Power is great. In addition, when there is a large amount of laundry as shown in Figures 7 and 8, the protrusion 2 is provided only at the bottom of the washing tub, so the rotational force of the rotary blades 3 is difficult to transmit to the upper layer of the washing tub. The part with strong downward rotational force is the protruding part 2, which does not interfere with the laundry.
Since it rotates while hitting the laundry, it is easy to change the top and bottom of the laundry, improving cleaning performance.

Effects of the Invention As is clear from the above embodiments, the washing machine of the present invention is particularly characterized in that the washing tub is provided with a plurality of protrusions that protrude inwardly, avoiding the corners, under the opposing inner walls of the washing tub. This prevents the water in the tub from jumping out of the washing machine when washing with a small load, and increases the number of times the laundry changes from top to bottom in the tub. At the corner portions, changes occur due to flow velocity, etc., resulting in a complicated process, and this can improve washing performance.

[Brief explanation of drawings]

Fig. 1 is a plan view showing a conventional two-tub washing machine, Fig. 2 is a sectional view thereof, Fig. 3 is a plan view showing a two-tub washing machine according to an embodiment of the present invention, and Fig. 4 is the same sectional view. The sectional view, FIG. 5, FIG. 6, FIG. 7, and FIG. 8 are explanatory views of the same effect. 1...Washing tub, 2...Protrusion, 3...Rotary blade.

Claims (1)

[Scope of utility model registration request] In a washing machine in which rotary blades, which are rotated with a rest period in between, are arranged at the center of the bottom of the washing tub, the washing tub is constructed so that its planar shape is approximately rectangular, and the washing tub is opposite to each other except for the corner portions. A washing machine in which a plurality of inwardly protruding protrusions are formed at the lower end of the inner surface.