JP2801250B2 - Washing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a washing machine, and more particularly to a washing machine component which suppresses the growth of microorganisms such as mold, yeast, and bacteria on the component of the washing machine. The present invention relates to a washing machine suitable for preventing discoloration and material deterioration of the above, and preventing the aforementioned microorganisms from contaminating the washing machine.

[Conventional technology]

Among the components of the washing machine, the main components that come into contact with the washing liquid,
For example, a thermoplastic resin, enamel, stainless steel, or the like mainly composed of polypropylene is used for a washing tub or a rotating blade.

By the way, when the washing machine is used for a long period of time, it is known that a portion that comes into contact with the washing liquid, such as the washing tub and the rotating blades, changes color to a so-called dull color such as black or brown. The cause is also caused by molds mainly on the surfaces of the washing machine components, such as those belonging to the genus Penicillium, Mucor, Cucuraria, Cladosporium, Alternaria, and Humicola, which are microorganisms unique to the washing machine. Has already been found to be due to the propagation of microorganisms such as yeasts and bacteria.

[Problems to be solved by the invention]

Heretofore, it has been found that there is the following problem as a problem relating to mold generated in a washing machine.

That is, during operation of the washing machine, there is a problem that mold comes into the washing water and contaminates laundry such as clothes. This is mainly caused by mold generated on the rotor. More specifically,
When drained after washing, dirt and detergent remain at the bottom of the washing tub, and the bottom of the rotor is also noticeable at the bottom, because the gap between the rotor and the washing tub is small, This is because the water stays in the gap portion and is not discharged to the outside. Particularly, in a case where the washing machine is not used for a long time due to travel abroad or the like, and then the washing machine is used, a strong water flow generated by the rotation of the rotor blades. The present inventors confirmed that the mold adhered to the back surface of the rotor blade was peeled off, and this was the main cause of coming out of the washing water.

JP-A-63-289044 entitled "Bactericidal Polyolefin Composition" discloses food containers, baskets, packaging materials,
It is exemplified that the washing tub of the washing machine may be formed of a synthetic resin containing a bacteriostatic substance together with the tana plate and the vegetable storage box in the refrigerator. Mold cannot be solved at all.

JP-A-63-289044 discloses that not only a washing tub of a washing machine, but also a washing tub and parts, that is, a washing tub and other washing machine parts, are formed of a synthetic resin which has been subjected to an antibacterial treatment. Japanese Patent Application Laid-Open No. 63-289044 specifically states which parts of a washing machine are made of a sterile synthetic resin (for example, there are many opportunities to get wet with water, In consideration of the sanitary aspect of the operation panel, which is often touched, it is not disclosed at all whether each component of the operation panel is included). Not only that, according to the above-mentioned Japanese Patent Application Laid-Open No. 63-289044, the antibacterial treatment of the washing tub itself is always mentioned above, such as the antibacterial treatment of both the washing tub and other washing machine parts. In addition, there is no suggestion as to what is particularly superior in performing the antibacterial treatment on the rotor blades as compared with the case in which the washing tub is subjected to the antibacterial treatment.

The present invention has a problem that, during operation of the washing machine, mold comes out of the washing water and contaminates laundry such as clothes, which is mainly caused by mold generated on the rotor, that is, When drained after washing, dirt and detergent remain in the lower part of the tub, and the bottom surface of the rotor is also noticeable at the lower part of the tub, because the gap between the rotor and the lower part of the tub below is small. This is because the minute stays in the gap portion and is not discharged to the outside, especially without using the washing machine for a long time,
Then, when using a washing machine, the strong water flow generated by the rotation of the rotor impinges on the back side of the rotor blades to separate the mold, based on the perception that this will come out into the washing water. The purpose of the present invention is to suppress the growth of microorganisms such as molds, yeasts, and bacteria more than ever.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a washing and dewatering tub into which clothes are put, an outer tub that stores the washing and dewatering tub, a supporting device that supports the outer tub from an outer frame with vibration isolation, In a washing machine having a rotating blade provided at the bottom of a washing and dewatering tub and a driving device for driving the washing and dewatering tub and the rotating wing, the rotating wing is heat-resistant higher than a synthetic resin injection molding temperature. Characterized in that it is formed of a synthetic resin containing a microorganism growth-inhibiting substance having the following.

[Action]

According to the present invention, since the substance has the microorganism growth suppressing substance, no mold is generated on the back surface of the rotor, and no mold is stained on the laundry.

In addition, by forming the rotor blade provided at the bottom of the washing and dewatering tub with a synthetic resin containing a microorganism growth suppressing substance having heat resistance higher than the injection molding temperature, the microorganism growth suppressing substance is converted from the synthetic resin at the time of molding. It is possible to provide a rotor blade having antibacterial properties without being separated and separated and falling off.

〔Example〕

Hereinafter, the present invention will be described based on FIG. 1 with reference to FIG. 2 taking a case where the present invention is applied to a fully automatic washing machine as an example. FIG. 1 shows a washing machine configuration showing one embodiment of the present invention. FIG. 2 is a vertical sectional view showing the internal structure of a fully automatic washing machine.

In FIG. 2, 1 indicates a rotating tub of a fully automatic washing machine,
This rotary tub 1 has a function as a washing and dewatering tub.
At the center of the bottom of the rotary tub 1, a mounting seat 5 into which a flange 4 for mounting the rotary wing 2 to the shaft 3 is formed, and an annular rib 6 is formed concentrically with the mounting seat 5, A radial rib 7 is formed in the radial direction of the mounting seat 5 so as to cross the annular rib 6. A horizontal rib 8 running in the horizontal direction and a vertical rib 9 running in the vertical direction are formed on the outer peripheral side portion of the rotary tub 1 so as to intersect with each other. Is formed. On the other hand, on the peripheral wall of the rotating tub 1, a large number of dehydration holes 13, 13,... Are formed in portions that do not interfere with the ribs 6, 7, 8, 9. On the other hand, the rotating tank 1
The water tub 15 is rotatably supported in a water tub 15 provided in the outer frame 14 of the washing machine, and has a function as an outer tub of the rotary tub 1. A clutch 17 for transmitting rotation from the motor 16 to the shaft 3 of the rotary wing 2 is provided at a lower bottom portion of the water receiving tank 15. Further, the water receiving tank 15 is elastically suspended and supported on the outer frame 14 by suspension rods 18, 18 via springs 19, 19. In FIG. 2, reference numeral 20 denotes an outer frame cover, and 51 denotes an operation panel.

In FIG. 2, the components of the washing machine shown in FIG. 1 are used for the rotor 2 and in FIG. 1, polypropylene resin which is the main material of the components of the washing machine is used.
In order to further improve the rigidity of the components of the washing machine, 10% of talc 23 is blended in 22.
2,3,5,6 tetrachloro-4 (methylsulfonyl) pyridine 24, which has excellent heat resistance and a large antibacterial effect, based on the total amount of
%. Here, as inorganic materials used for the purpose of increasing the amount of components of the washing machine and improving the rigidity, etc., besides talc 23, calcium carbonate, barium sulfate,
An arbitrary amount of a particulate inorganic material such as mica or a fibrous inorganic material such as glass fiber can be added as needed. In addition, as the antibacterial substance, in addition to 2,3,5,6 tetrachloro-4 (methylsulfonyl) pyridine 24, 2,4,
5,6 (tetrachloroisophthalonitrile) is also an excellent antibacterial substance for use in the practice of the present invention because it has excellent heat resistance and also has a large antibacterial action. You may make it. Further, additives such as an antioxidant and a dispersant may be blended in addition to the above-mentioned materials, and coloring by adding a pigment is also possible.

 Next, the operation will be described.

Due to the rotation of the rotary wing 2, a strong water flow is generated at the back blade formed on the back surface of the rotary wing 2. This water flow becomes a circulating flow in which the washing water between the outer tub (water receiving tub) 15 and the washing and dewatering tub 1 is sucked by the action of the back blade and is discharged inside the washing and dewatering tub 1.

With this strong water flow, the back surface of the rotary wing 2 is washed strongly, but no mold is generated due to the antibacterial function of the microorganism-propagating substance, so that the mold does not flow out on the strong water flow. For this reason, it does not occur that the washing water is stained with mold and the laundry is stained with mold.

〔The invention's effect〕

As described above, the present invention provides a washing and dewatering tub into which clothes are put, an outer tub for storing the washing and dewatering tub, a support device for supporting the outer tub from an outer frame with vibration isolation, and In a washing machine having a rotating blade provided at the bottom of a combined spin-drying tub and a driving device for driving the washing and spin-drying tub and the rotating blade, the rotating blade has a heat resistance higher than a synthetic resin injection molding temperature. A washing machine characterized by being formed of a synthetic resin mixed with a microorganism growth inhibiting substance.

 According to this configuration, the following advantages can be expected.

(1). On the back side of the rotation provided on the inner bottom of the washing and dewatering tub placed in the outer tub, a strong water flow spewing out with the rotation of the rotating wings, but the antibacterial action of the microorganism-propagating substance does not allow mold to flow, so the washing water There is no mold stain, and no mold stain on the laundry.

[Brief description of the drawings]

FIG. 1 is a partially detailed view of the components of a washing machine showing one embodiment of the present invention, and FIG. 2 is a longitudinal sectional view showing the internal structure of a fully automatic washing machine. 1 ... rotating tank, 2 ... stirring blade, 15 ... water receiving tank, 22 ... polypropylene resin, 23 ... talc, 24 ... 2,3,5,6 tetrachloro-4 (methylsulfonyl) pyridine.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Shingo Tsuneyoshi 1-1-1 Higashitaga-cho, Hitachi City, Ibaraki Prefecture Inside the Taga Plant of Hitachi, Ltd. (56) References JP-A-63-28044 (JP, A) 1988-110258 (JP, A)

Claims (4)

(57) [Claims] 1. A washing and dewatering tub into which clothes are put, an outer tub for accommodating the washing and dewatering tub, a supporting device for supporting the outer tub from an outer frame with vibration isolation, and a bottom of the washing and dewatering tub In the washing machine having a driving device for driving the rotating blade provided in the washing and dewatering tub and the rotating blade, the rotating blade has a microorganism growth suppressing substance having heat resistance higher than the injection molding temperature of synthetic resin. A washing machine characterized by being formed of a blended synthetic resin. 2. The washing machine according to claim 1, wherein the microorganism growth suppressing substance contains 2,4,5,6 (tetrachloroisophthalonitrile). 3. The washing machine according to claim 1, wherein the microorganism growth suppressing substance comprises 2,3,5,6 tetrachloro-4 (methylsulfonyl) pyridine. 4. The washing machine according to claim 1, wherein the washing and dewatering tub is formed of metal.