JPS6317429Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a washing machine for use in general households.

(Configuration of conventional example and its problems) Conventionally, commonly seen washing machines are of the so-called spiral type, and as shown in Figs. 1 and 2,
The bottom surface of the washing tub 1 is sloped at an angle of 0° to 15°, and stirring blades 3 are provided on the sloped surface 2 to rotate the clothes 4. It was common to use a so-called jet type, in which the side surface was sloped at an angle of 0° to 25°, and stirring blades 3 were provided on the sloped surface 2 and rotated.

However, with this configuration, when reducing the depth of the washing machine body to save space, the difference in depth between the washing machine body and the washing tub is small, so a significant effect cannot be seen unless the depth of the washing tub is reduced.

The internal volume of a washing tub is determined by the width, depth, and depth, and making up for the decrease in internal volume when reducing the depth by increasing the width poses a problem in terms of space saving. Increasing the size makes it difficult to use when taking out clothes. Therefore, the internal volume of the washing tub is reduced, and the clothes are moved in a smaller washing tub than before.

In such a state, in the case of the above-mentioned spiral type, the water flow stirred by the stirring blade is a horizontal water flow, and the clothes 4 are separated from the side of the washing tub on the rotating side of the stirring blade 3 and the stirring blade 3.
When the washing machine hits the side of the washing tub facing the washing machine, it stops rotating and the normal washing effect cannot be obtained. In addition, in the case of a jet type, the stirring water flow is a vertical water flow, and the clothes 4
hits the side and bottom of the washing tub on the rotating side of the stirring blade 3 and stops rotating, making it impossible to obtain a normal cleaning effect.

In addition, when the clothes 4 hit the washing tub 1 and stop rotating as described above, the cloth will rotate if a large stirring force is applied to the stirring blades 3, but in order to do so, it is necessary to increase the torque of the motor. As a result, it becomes expensive, and 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 improves the cleaning effect and saves space.

(Structure of the invention) The washing machine of the invention has four side walls, one bottom surface, and a washing machine that connects the side walls and the bottom surface and is inclined with respect to the horizontal plane.
The washing tub has two sloped surfaces, the side walls and the ridges of the side walls are curved, and the radius of curvature of both end ridges of the side wall facing the slope is smaller than the radius of curvature of both end ridges on the slope side. A stirring blade is rotatably mounted on the inclined surface of the washing tub, and the stirring blade is driven intermittently in right and left rotation for a short period of time.

(Description of Embodiment) Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. In FIGS. 5 and 6, reference numeral 5 denotes a washing machine main body, in which a washing tub 6 is installed. The washing tub 6 has an opening 6' at the top, and the front and rear side walls 7, 8 stand almost vertically. are tied together. The left and right side surfaces 11 and 12 stand approximately vertically, and the portions near the bottom surface 10 have bottom curved portions 11' and 12' connected by appropriate circular 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 16, and a motor pulley 17. 18 is a drain hole of the washing tub 6, 19 is a drain plug, and 20 is a drain hose.

Next, the operation of the washing machine having the above configuration will be explained. When the stirring blades 13 are rotated, the clothes are rotated at approximately the same rotation speed 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, the stirring blade 13
Normal movement of clothing can be obtained by rotating the garment intermittently from side to side for a short period of time.

Furthermore, as shown in FIG.
The radius of curvature is R1, the front side wall 8 and the left and right side walls 1
The radius of curvature of the curved surface portions 8' provided on the ridges 1 and 12 is R2, and the shape is such that R1>R2. The clothes in the washing tub 6 receive force from the stirring blades 13 so that the clothes in the upper part move to the lower part and the clothes in the lower part move to the upper part. As shown in Fig. 5, the space in the washing tub becomes smaller as it moves toward the bottom, so the clothes moving toward the bottom of the washing tub 6 are pushed into the tub. Since the space becomes smaller, it is difficult to move the lower garment upward again, and the load resistance of the motor 16 increases. The curved surface 7' of the washing tub 6 is located above the stirring blade 13, and the clothes 4 near this curved surface 7' are agitated from below by the upper part of the stirring blade 13, so that the clothes 4 are removed from the washing tub 6. resistance is small, and even if the agitation force from the agitation blades 13 is small compared to the clothes 4 in the front part of the washing tub 6, the clothes move easily and do not make complicated movements. For this reason, the radius of curvature R1 of the curved surface portion 7' of the washing tub 6 is made larger than the radius of curvature R2 of the curved surface portion 8', thereby reducing the space between the washing tub 6 and the stirring blade 13 and complicating the movement of clothes. ing.

Therefore, by setting the radius of curvature of the curved surfaces 7' and 8' of the washing tub 6 to R1>R2, the torque of the motor 6 can be reduced and the cleaning effect can be improved.

(Effects of the Invention) As is clear from the above-mentioned embodiments, according to the present invention, it is possible to provide a washing machine that simultaneously improves washing performance and saves space with a simple configuration.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a washing tub showing a conventional example, Fig. 2 is a sectional view of the same side, Fig. 3 is a side sectional view of the washing tub showing another conventional example, and Fig. 4 is a front sectional view of the same. FIG. 5 is a side sectional view of a washing machine showing an embodiment of the present invention, FIG. 6 is a front sectional view thereof, and FIG. 7 is a plan view thereof. 5...Washing machine body, 6...Washing tub, 7, 8, 1
1, 12...Side wall, 7', 8'...Curved surface part, 9...
Inclined surface, 10... Bottom surface, 13... Stirring blade.

Claims (1)

[Scope of utility model registration request] It has four side walls, one bottom surface, and one sloping surface that connects the side walls and the bottom surface and is inclined with respect to the horizontal plane, and the ridges of the side walls and the side walls are curved, and both end ridges of the side wall opposite to the sloping surface are formed. A washing tub is formed by making the radius of curvature of the ridge smaller than the radius of curvature of the ridges at both ends on the slope side, and a stirring blade is rotatably installed on the slope of the washing tub, and the stirring blade is used for a short period of time. A washing machine characterized by being driven by intermittent left and right rotation.