JPH02142Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a washing tub of a washing machine used in general households.

Conventional structure and its problems Conventional washing machines are of the so-called spiral type, and as shown in Figs. 1 and 2, the bottom of the washing tub 1 is sloped at an angle of 8° to 15°. , stirring blades 3 were provided on this inclined surface 2. In addition, as shown in FIGS. 3 and 4, there was also a so-called jet type washing machine, in which the side surface of the washing tub 1 was sloped at an angle of 0° to 25°, and stirring blades 3 were provided on the sloped surface 2.

However, with these configurations, if you try to reduce the depth of the washing machine body in order to make the whole washing machine smaller, the depth of the washing machine body and the washing tub are almost the same, so it is necessary to reduce the depth of the washing tub itself. I had to. If the depth of the washing tub is reduced, the internal volume of the washing tub will be reduced unless the width and depth are increased. However, increasing the width poses a problem in terms of miniaturization, and increasing the depth poses a problem in terms of removing clothes. If the above-mentioned spiral type is adopted in such a state, the water flow stirred by the stirring blade is a horizontal water flow, so the clothes 4 are distributed between the side of the washing tub 1 on the rotating side of the stirring blade 3 and the side of the washing tub 1 opposite to the stirring blade 3. When the machine hits the machine, it stops rotating and normal cleaning results cannot be obtained.

In addition, since the stirring water flow in the case of the jet type is a vertical water flow, the clothes 4 hit the side and bottom of the washing tub 1 on the rotating side of the stirring blades 3 and stop rotating, making it impossible to obtain normal washing results.

As mentioned above, even if the clothes hit the washing tub 1 and stop rotating, the clothes will still rotate if a large stirring force is applied to the stirring blades 3, but the motor torque needs to be increased, resulting in an expensive product. In addition, if the agitation force is too large, there is a problem that damage to the clothes increases.

Purpose of the invention The present invention solves these conventional problems and provides a washing machine that can improve washing results and be downsized.

Structure of the invention The washing machine of the invention has a part of the bottom that is horizontally aligned.
A washing tub was provided with an inclined surface inclined at an angle of 40° to 70°, and a stirring blade that rotated intermittently in the left-right rotation direction was installed on the inclined surface of the washing tub. An auxiliary rotor is provided on a side surface facing the inclined surface, and the center axis of the auxiliary rotor is positioned such that the center axis of the stirring blade and the center axis of the auxiliary rotor intersect near the center top of the auxiliary rotor. The lower limit is the position above, and the upper limit is a position 1/2 the diameter of the auxiliary rotor above this lower limit.

With this configuration, even when the clothes rotated by the stirring blades hit the side of the washing tub, the auxiliary rotary blades provide smooth rotation and prevent them from clumping together. .

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on the drawings. In Figures 5 and 6, 5 is the washing machine main body;
A washing tub 6 is installed inside. The washing tub 6 has an opening at the top, and the front and rear sides 7 and 8 stand almost vertically, and the front and rear sides 7 and 8 are at an angle of θ= with respect to the horizontal plane.
Inclined surface 9 and bottom surface 10 having an angle of 45° inclination
It is tied to The angle of inclination of the inclined surface 9 is preferably set in the range of 40° to 70°. Left and right sides 11, 12
stands approximately vertically, and the portion near the bottom surface 10 has circular portions 11' and 12' connected by appropriate arcs. A stirring blade 13 is rotatably provided on the inclined surface 9 and is rotationally driven by a pulley 14, a belt 15, a motor pulley 16, and a motor 17. The length of the inclined surface 9 is set to be slightly larger than the stirring blade 13 in order to increase the internal volume of the washing tub 6. 18
is an auxiliary rotary blade rotatably mounted on the side surface 8 of the washing tub 6, facing the inclined surface 9, and the mounting position of the rotary shaft is aligned with the center axis of the stirring blade 13, as shown in FIG. a and the central axis b of the auxiliary rotor 18
The lower limit is set at a position where the auxiliary rotor blades intersect near the center top of the auxiliary rotor blade, and the upper limit is set in the vicinity of a position 1/2 the diameter of the auxiliary rotor blade 18 upward from this lower limit position.

The operation in the above configuration will be explained. First, when the stirring blades 13 are rotated, the clothes rotate at approximately the same number of rotations as the stirring blades 13 because the inner volume of the washing tub 6 is small. Therefore, the clothes rotated together with the stirring blades 13 immediately come into contact with the washing tub 6 and stop, and the clothes are not allowed to move normally. For this reason, if the rotation of the stirring blade 13 is intermittently rotated left and right, and the number of rotations per operation period is 1 to 3, normal movement is given to the clothes. Even in this case, if the inclination angle θ of the inclined surface 9 is less than 40°, the rotation radius of the clothes is small and the clothes immediately stop hitting the washing tub 6. As the angle of inclination θ increases, the radius of the rotating blade of the clothes increases, and the movement of the clothes becomes smoother, but when the angle of inclination θ is small, the clothes float upward due to buoyancy compared to when stirring. Since the stirring blades 13 act to lift the clothes, the load resistance of the motor increases, and as a result, there is a tendency for power consumption to increase. Furthermore, if the inclination angle θ is 70° or more, the clothes move too smoothly and do not make complicated movements, resulting in poor cleaning results. Therefore, looking at the correlation between motor input and cleaning results, it is preferable to set the inclination angle θ between 40° and 70°.

As shown in FIG. 9, the auxiliary rotary blade 18 is positioned upwardly from a position where the central axis a of the stirring blade 13 and the central axis b of the auxiliary rotary blade 18 intersect near the center top of the auxiliary rotary blade 18. Diameter A of rotor blade 18
If the agitating blades 13 are rotated, the clothes 19 will rotate together with the agitating blades 13, so the clothes 19 will come into contact with the side surface of the washing tub 6. Since there is no rotor 18, there is no effective operation. Furthermore, if the center axis a of the stirring blade 13 and the center axis b of the auxiliary rotor 18 intersect near the center top of the rotor 18, as shown in FIG. It covers the wings and stops rotating. As a result, the mounting position of the auxiliary rotary blade 18 is set at a position where the central axis a of the stirring blade 13 and the central axis b of the auxiliary rotary blade 18 intersect near the center top of the auxiliary rotary blade 18, and from this lower limit. If the auxiliary rotor 18 is provided above a position outside the upper limit of a position 1/2 the diameter of the auxiliary rotor 18, there will be no effect of smooth rotation on the clothing. When an auxiliary rotary blade is provided within the above range, the clothes 19 rotated by the stirring blade 13 hit the side surface 8 of the washing tub 6, but the auxiliary rotary blade 18
It also applies to Since the auxiliary rotary blades 18 are rotatably provided, the clothes are not pressed against the side surface 8 of the washing tub and can rotate smoothly.

Effects of the invention This invention reduces the depth of the washing machine by rotating the clothes intermittently from side to side using the agitating blades installed on the inclined surface, and smoothing the rotation of the clothes by using the auxiliary rotary blades installed oppositely. This makes it possible to downsize the washing machine itself and improve the washing results.

[Brief explanation of the drawing]

Figure 1 is a plan view of the washing tub of a conventional washing machine;
3 is a sectional view of another conventional example, FIG. 4 is a front view of the same, FIG. 5 is a sectional view of a washing machine showing an embodiment of the present invention, and FIG. 6 is a front view of the washing machine. Cross section, 7th
8 is a front view of the washing tub shown in FIG. 7, and FIGS. 9 and 10 are side views when the position of the auxiliary rotary blade is changed. 5...Washing machine body, 6...Washing tub, 7, 8, 1
1, 12... Side surface, 9... Inclined surface, 10... Bottom surface, 13... Stirring blade, 18... Auxiliary rotary blade.

Claims (1)

[Claims for Utility Model Registration] (1) A part of the bottom of the washing tub is an inclined surface inclined at an angle of 40° to 70° with respect to the horizontal, and a stirring blade that rotates intermittently in the left-right rotation direction is provided on this inclined surface. At the same time, an auxiliary rotor blade is rotatably provided on the side surface facing the inclined surface, and the position of the auxiliary rotor blade is such that the center axis of the stirring blade and the center axis of the auxiliary rotor blade are aligned with each other. A washing machine characterized in that the lower limit is a position where the auxiliary rotor blades intersect in the vicinity of the top, and the upper limit is a position in the vicinity of a position moved approximately one-half the diameter of the auxiliary rotary blades. (2) The washing machine according to claim 1, wherein the stirring blade rotates intermittently in alternating left and right rotation directions, and one operation period in one direction is 1 to 3 rotations.