JPH07108097A - Spin basket for washing machine - Google Patents

Abstract

PURPOSE:To provide an inexpensive spin basket for washing machine having high mechanical strength and thus no problem for adhesion of soil and generation of noise. CONSTITUTION:In a spin basket which has spinning holes 21 on the whole body of the circumferential side part and conducts wash spinning through the spinning holes 21 by being rotated, an outer layer body is superposed and molded, on an inner layer body formed by means of a foaming molding in which the foaming density of a surface part (an inner surface part 15a, an outer surface part 15b and a spinning hole circumferential surface part 21a) is enhanced by using plastics as the material, or a non-foaming molding by using plastics as the material, by means of the foaming molding in which the foaming density of the surface part is enhanced by using plastics as the material. In this case, the material of the inner layer body and the material of the outer layer body are formed of the plastics of the same series. Further, an antibacterial agent is blended into the plastic material to be foamed and molded.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a dewatering basket for a plastic washing machine.

[0002]

2. Description of the Related Art Conventionally, a dewatering basket of a washing machine is usually made of plastic. On the other hand, in recent years or in the old days, those formed from a metal plate are also provided.

[0003]

The dewatering basket of a washing machine is formed of plastic because the required shape can be easily obtained and therefore inexpensive. However, this plastic dewatering basket has the drawback of low mechanical strength. In particular, the spin basket of the washing machine spins the laundry by centrifugal force due to rotation,
Depending on the rotation speed when dehydrating, it will be 100G to 200
G acceleration is applied (ordinary gravitational acceleration is 1G).
Therefore, an unbalanced load of 1 [kg] is 100 [kg]
To 200 [kg], it means that the dehydration basket is deformed.
In order to prevent this, a large number of reinforcing ribs 1 are formed in both the vertical and horizontal directions on the outer surface of the dehydration basket as shown in FIG.

However, stains tend to adhere to and remain on the outer surface of the dehydration basket having the above-mentioned reinforcing ribs 1, causing mold and odor. Further, when the dehydration basket is rotated, a swirl of air is generated by the reinforcing ribs 1, and so-called wind noise is generated as noise.

On the other hand, the dehydration basket formed from a metal plate has high mechanical strength and can withstand a large load during dehydration without forming the reinforcing rib 1 unlike the dehydration basket made of plastic. . However, the dehydration basket made of a metal plate is expensive due to the difficulty of manufacturing, and the price is twice or more than that of the plastic basket.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a dewatering basket for a washing machine which is low in price, high in mechanical strength, and free from problems such as dirt adhesion and noise generation. To provide.

[0007]

In order to achieve the above object, in the dehydrating basket of the washing machine of the present invention, the first
In addition, there is a dehydration hole on the entire peripheral side part, which is dehydrated from the dehydration hole by being rotated, and is formed by foam molding using plastic as a material and increasing the foam density of the surface part. Characterize.

In the dewatering basket of the washing machine of the present invention, secondly, there is a dewatering hole in the entire peripheral side portion, and the dewatering hole is dehydrated by being rotated. The non-foam-molded inner layer body is formed by stacking the outer layer body by foam molding using plastic as a material to increase the foam density of the surface portion.

In this case, the material of the inner layer body and the material of the outer layer body may be the same series of plastics.

Further, an antibacterial agent may be added to the plastic material to be foam-molded.

[0011]

According to the above means, all of them are mainly formed by foam molding using plastic as a material, so that they can be manufactured at low cost. Then, according to the first means, in the foam molding, by increasing the foam density of the surface portion, the inner surface portion and the outer surface portion of the basket are hardened, and further, the dehydration holes existing in the entire peripheral side portion are formed. The respective peripheral surface portions are also hardened so that they connect the inner surface portion and the outer surface portion of the basket so that sufficient mechanical strength is obtained as a whole.

According to the second means, the foam-molded outer layer body is connected to the non-foam-molded inner layer body at the surface portion where the foam density is increased and the cured portion is connected.
As a whole, sufficient mechanical strength can be obtained.

Therefore, even though it is made of plastic, it can withstand a large load at the time of dehydration without forming reinforcing ribs on the outer surface thereof, and the reinforcing ribs cause mold, odor, and wind noise. Can be eliminated.

In particular, in the case where the material of the inner layer body and the material of the outer layer body are the same series of plastics, the connection between the inner layer body and the outer layer body is improved, and the overall mechanical strength can be increased.

When a plastic material to be foam-molded is mixed with an antibacterial agent, generation of mold and other fungi can be suppressed more effectively.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, FIG. 3 shows the overall structure of a washing machine, and in particular, a washing machine for combined use of dehydration, and a hanging mechanism 14 mainly composed of a plurality of water tanks 12 (only one is shown) hanging rods 13 in an outer box 11. The dehydration basket 15 is disposed in the water tank 12, and the stirring member 16 for washing is disposed at the bottom of the dehydration basket 15.

A drain valve 17 and a drain hose 18 for draining water from the inside of the water tank 12 are arranged below the water tank 12 and a drive mechanism 20 mainly composed of a motor 19 is arranged. The drive mechanism 20 stops the dehydration basket 15 to rotate the stirring body 16 at the time of washing, and rotates the dehydration basket 15 together with the stirring body 16 at the time of dehydration.

Here, the dewatering basket 15 has a large number of dewatering holes 21 on the entire peripheral side portion, and dewaters from each of the dewatering holes 21 when rotated as described above. Further, in particular, the dehydration basket 15 is formed by foam molding in which a plastic such as polypropylene is used as a material, and a foaming agent is added to the plastic to mold while foaming in the mold. Further, at the time of molding, the mold is cooled. By cooling with water or the like, the portion of the molding material that is in contact with the molding die is cooled, thereby suppressing foaming of that portion (surface portion) and increasing the foaming density.

Dewatering basket 15 formed as described above
According to this, since it is formed by foam molding using the plastic exemplified as polypropylene as a material, it can be manufactured at a lower cost than that manufactured from a metal plate. Further, in the foam molding, by increasing the foam density of the surface portion, as shown in FIGS. 1 and 2, the inner surface portion 15a and the outer surface portion 15b of the dehydration basket 15 are cured, and further,
Since the peripheral surface portions 21a of the dehydration holes 21 existing in the entire peripheral side portion are also hardened to connect the inner surface portion 15a and the outer surface portion 15b, the dehydration basket 15 as a whole has sufficient mechanical strength. Like Further, although not shown, the dehydration basket 15 has a plurality of drainage holes at the bottom, and the peripheral surface portions of the drainage holes are also hardened to connect the inner surface portion 15a and the outer surface portion 15b. The mechanical strength of 15 can be further increased. Thus, although the dehydration basket 15 is made of plastic, the dehydration basket 15 can withstand a large load during dehydration without forming a reinforcing rib on its outer surface portion 15b unlike the conventional one. Generation of mold, odor, and wind noise (noise) can be eliminated.

By the way, a structure similar to the dehydration basket 15 described above is conventionally disclosed in JP-A-47-40854. However, this is not a dehydration basket, but a water tank (corresponding to the water tank 12) around the dehydration basket is formed by molding similar to the dehydration basket 15, and this water tank has a dehydration hole because of the function of accumulating water. Therefore, the function of connecting the hardened inner surface portion and the hardened outer surface portion at each of the hardened peripheral surface portions of the dewatering hole cannot be obtained, and the high mechanical strength of the dewatering basket 15 cannot be obtained. Further, since the water tank is not rotated at a high speed for spin-drying and is not rotated at all, it is necessary to enhance mechanical strength like the spin-drying basket 15 without applying a strong centrifugal force. Absent.

In contrast to the above, FIG. 4 shows a second embodiment of the present invention in which the molding structure of the dehydration basket 15 is changed, and only the differences from the first embodiment will be described. For example, the inner layer body 2 corresponding to the inner surface portion 15a of the first embodiment.
2 is formed by non-foaming molding, for example, ordinary injection molding, using plastic, for example, polypropylene as a material, as described above, and an outer layer body 23 corresponding to the outer surface portion 15b is formed in the same series as that of the material of the plastic, especially the inner layer body 22. As described above, the surface portion 23a is made of polypropylene.
It is provided by superposing by foam molding to increase the foam density.

In this case, the foamed outer layer body 23 does not have a sufficiently glossy surface, and the outer layer body 23 is never visible when the lid of the washing machine is opened.
Since the inner layer body 22 is visible, the inner layer body 22 is non-foam-molded so as to have a glossy surface and give a high-class feeling. Therefore, the dehydration hole 24 is also formed in the inner layer body 22 because of its good finish, but it may be formed in the outer layer body 23. In any case, the outer layer body 23 formed by foam molding is connected to the inner layer body 22 at a portion where the foam density of the surface portion is increased and hardened, and as a whole, a sufficient mechanical strength is obtained as in the first embodiment. Since the desired strength can be obtained, the same effect as that of the first embodiment can be obtained.

Further, in this case, ribs 24, which are lower than the conventional reinforcing ribs, are formed on the outer surface of the inner layer body 22, which reduces molding strain when the outer layer body 23 is overmolded on the inner layer body 22. In addition, the connection of the outer layer body 23 to the inner layer body 22 can be strengthened.

Further, in this case, the material of the inner layer body 22 and the material of the outer layer body 23 are plastics of the same series, so that the connection between the inner layer body 22 and the outer layer body 23 can be further strengthened, and the whole mechanical The strength can be further increased.

The present invention is not limited to the embodiments described above and shown in the drawings. Particularly, by adding an antibacterial agent such as thiazoline to a plastic material to be foam-molded, mold and other fungi can be prevented. The generation can be suppressed more effectively. Further, the application target is not limited to the dehydration basket of the combined washing machine and the dehydration basket of the two-tub type washing machine, and the same application can be performed.

[0026]

The dewatering basket of the washing machine of the present invention is as described above, and has the following effects. First
In addition, there is a dehydration hole in the entire peripheral side portion, and when dehydration is performed from the dehydration hole by being rotated, by using a plastic material and forming it by foam molding to increase the foam density of the surface part, High mechanical strength at a price,
It is possible to avoid problems such as adhesion of dirt and generation of noise.

Secondly, in the one having a dehydration hole in the entire peripheral side portion and dehydrated from the dehydration hole by being rotated, the outer layer body and the outer layer body are made of plastic and non-foamed. The material is made by lap molding by foam molding to increase the foam density of the surface part, so that it has the same low price, high mechanical strength, and the problem of dirt adhesion and noise generation as described above. it can.

Thirdly, the material of the inner layer body and the material of the outer layer body are made of the same series of plastics, whereby the mechanical strength can be further enhanced.

Fourthly, the addition of an antibacterial agent to the above-mentioned foam-molded plastic material makes it possible to more effectively suppress the generation of mold and other fungi.

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional view of a dehydration basket showing a first embodiment of the present invention.

FIG. 2 is a partial perspective view of the basket.

FIG. 3 is a cutaway side view of the entire washing machine.

FIG. 4 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 5 is a view corresponding to FIG. 2 showing a conventional example.

[Explanation of symbols]

15 is a dehydration basket, 15a is an inner surface portion (surface portion), 1
5b is an outer surface portion (surface portion), 21 is a dehydration hole, 21a is a peripheral surface portion (surface portion), 22 is an inner layer body, 23 is an outer layer body, 23a.
Indicates a surface portion, and 24 indicates a dehydration hole.

Claims (4)

[Claims] 1. A dehydrator having a dehydration hole on the entire peripheral side portion, which is dehydrated from the dehydration hole by being rotated,
A dewatering basket for a washing machine, which is made of plastic and formed by foam molding to increase the foam density of the surface. 2. A device having a dehydration hole on the entire peripheral side portion and dehydrated from the dehydration hole by being rotated,
A dewatering basket for a washing machine, comprising an inner layer body made of plastic as a non-foamed body and an outer layer body made of plastic as a material and superposed by foam molding to increase the foam density of the surface portion. 3. The dewatering basket for a washing machine according to claim 2, wherein the material of the inner layer body and the material of the outer layer body are plastics of the same series. 4. A dewatering basket for a washing machine according to claim 1, wherein an antibacterial agent is mixed with the plastic material to be foam-molded.