JPS6173696A - Washing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention consists of a peripheral wall of a washing tub consisting of a fixed peripheral wall portion and a movable peripheral wall portion, and is mainly used to connect the peripheral wall portion and the laundry. jr! A
Contains 1ffl uM which has a cleaning action on contact of 1q.

[Technical background of the invention and its problems]

Among conventional washing machines, rotary vane type washing machines that generate a water flow using rotary vanes to obtain a cleaning effect require a large washing tank volume for their use because they essentially flow the laundry with a water flow. , this is washed 1qm - times
means less. Furthermore, when the amount of cloth is small, the water flow becomes extremely strong, resulting in excessive cleaning, while when the amount of cloth increases, the water flow speed decreases and the cleaning effect tends to decrease rapidly. Furthermore, since the laundry and the rotating blade come into contact only incidentally and only partially, it is not possible to expect a scrubbing effect over the entire laundry, and on the contrary, the laundry will be partially damaged.

On the other hand, there is a new method that has recently removed the rotating blades, in which the entire washing tank is intermittently rotated while containing water and laundry, and the cleaning effect is obtained by the speed difference between the water and the laundry. Although this method has the advantage of not damaging the laundry, it has the disadvantage that the speed difference between the washing and water is small and the movement is simple, resulting in low cleaning effectiveness. There is.

[Object of the Invention] Therefore, the object of the present invention is to be able to expect a higher cleaning effect and prevention of fabric damage than the conventional method without using the conventional rotary blade or the rotation of the entire washing tank, and to wash a large amount at one time. The objective is to provide a washing machine that can maintain a suitable cleaning effect and has a wide range of applications.

[Summary of the invention]

According to the present invention, the peripheral wall of the washing tub is formed by a fixed peripheral wall section located upwardly and a movable peripheral wall section located below, and the laundry is accommodated together with water in such a washing tub, and the movable peripheral wall section is formed. Rotate forward and backward, wash it? ff The laundry is made to flow mainly due to the frictional force of contact with the movable peripheral wall part, and is washed by a synergistic effect with the frictional force received from the fixed peripheral wall part in the upper part, so that the fixed peripheral wall of the laundry and the so-called massaging effect caused by the washing being twisted by forces in different directions from the fixed surrounding wall and the movable surrounding wall. In addition, by fitting the lower end of the fixed peripheral wall and the upper end of the movable peripheral wall into a 4-4 structure and interposing a bearing between them, both fixed and movable This prevents laundry from getting stuck between the peripheral walls.

[Embodiment of the Invention] Hereinafter, an embodiment in which the present invention is applied to a dehydrating and washing machine will be described with reference to the drawings.1 is an outer box, inside of which a water receiving tank 2 is disposed, which is attached to a hanging rod. It is elastically supported via a mechanism 3 so as to be able to swing freely. Reference numeral 4 denotes a washing tank, which essentially consists of a fixed surrounding wall and a movable surrounding wall located below the fixed surrounding wall.
In this embodiment, this is achieved by a combination of a fixed tank 5 that rotates at high speed during dewatering operation and is stopped during washing, and an agitator 6 in the form of a shallow container. To explain this in detail below, fixed W! 5 is placed in the water receptacle [2 and its outer bottom is connected to the hollow dehydration shaft 7, and the container-shaped stirring body 6 is placed in the fixed tank 5.
It is arranged below the inner circumferential wall of , and its outer bottom is connected to wash@8. At this time, the fixed tank 5 is the tank lower part 5a.
The tank upper part 5b and the tank upper part 5b are formed separately from plastic, and the tank upper part 5b is fitted inside the tank lower part 5a and connected by screws 9.

Further, the height of the peripheral wall of the container-shaped stirring body 6 is set to a height slightly smaller than the height of the peripheral wall of the lower part 5a of the tank 495, that is, the depth is set, and a gap of one inch is made so that the upper end thereof can be rotated with respect to the lower part of the upper part of the tank 5b. I try to position it at a height level that can occur.

In addition, the diameter of the container-shaped stirring body 6 is rotated within the tank lower part 5a, and the iq
The inner diameter of the tank-shaped stirring body 6 and the inner peripheral surface of the tank lower part 5b are set to the same size as the inner diameter of the tank upper part 5b, and the inner peripheral surface of the tank lower part 5b is set to the same size as the inner diameter of the tank upper part 5b. It has a continuous form. As shown in FIG. 2, an abbreviated annular wall 6a is integrally formed on the outer periphery of the upper end of the container-shaped stirring body 6 to form four substantially concave annular portions 10.
An annular convex wall 11 is integrally installed on the stepped surface of the lower end facing from above the upper end of the container-shaped agitator 6 on the back side of the tank upper part 5b which is substantially fixed as a fixed peripheral wall during washing,
This annular convex wall 11 is fitted into the annular recess 10.

A large number of balls 12 as bearings are interposed between the lower end of the tank upper part 5b and the upper end of the container-shaped stirring body 6, which have a fitting structure in this way, that is, the annular recess 10 of the upper part of the container-shaped stirring body 6. A ball 12 is accommodated therein in a movable manner, and the annular convex wall 11 at the lower end of the tank upper part 5b is brought into contact with the D ball 12. On the other hand, in this embodiment, the washing tank 4 also serves as a dehydration tank, and for this purpose, dehydration holes 13.1/I are formed in the peripheral wall of the fixed tank 5 and the peripheral wall of the container-shaped stirring body 6. 1
5. It has a power control a'l1811 structure, which transmits the rotational force of the washing iM machine motor 16 to the washing @ 8 at a reduced speed and alternately reverses during washing, and also to the spindle shaft 7 and washing shaft 8 during spin-drying. A deceleration mechanism, a clutch mechanism, and a brake R are used to transmit and rotate the fixed tank 5 together with the container-shaped agitator 6.
Built-in m etc. Reference numeral 17 is a timer, which automatically controls each process from washing to final dehydration. Reference numeral 18 denotes a drain valve that allows water in the washing tank 4 to be drained from the bottom of the water receiving tank 2 to the outside of the r-4'S through one drain hose.

In the above configuration, during the washing operation (L fixed + 1! 15 is restrained by the brake mechanism so as not to rotate, the container-shaped Ij
214' Since the body 6 is rotated forward and backward, the container-like stirring (
The peripheral wall of the tank upper part 5b of the fixed tank 5 exposed upward from the peripheral wall of 4G is made to function as a fixed peripheral wall part of the peripheral wall of the washing tank 4, and the peripheral wall of the container-shaped stirring body 6 is made to function as a movable peripheral wall part. There is.

Next, the operation of the above configuration will be explained. During washing, a conventional rotating blade type washing system is installed in the water receiving tank 2 and therefore in the washing tank 4.
Approximately the same amount of water as in case H is supplied and laundry is thrown in. The washing operation is carried out by rotating only the container-shaped agitator 6 in forward and reverse directions while the fixed tank 5 is restrained by a brake mechanism so as not to rotate. In this embodiment, the rotation speed of the container-shaped stirring body 6 is within the range of 120 to 180 revolutions per minute, and the direction of rotation is reversed approximately every 2 to 3 revolutions.

In such a washing operation, since the laundry comes into contact with the peripheral wall of the container-shaped agitator 6 and the peripheral wall of the tank upper part 5b, rotational force is applied from the container-shaped agitator 6 to the lower part due to frictional contact therewith. The upper part receives a restraining force due to frictional contact with the tank upper part 5b, and by simultaneously receiving these frictional forces in different directions, it gives a twisting or compressing effect to the washed items. As this process is repeated, the laundry is pushed toward the circumferential wall of the container-shaped agitator 6 due to the centrifugal force accompanying the rotation of the container-shaped agitator 6, and the laundry is moved up and down by receiving the reaction inward from the circumferential wall of the upper tub 5b. It also creates a reversal effect, giving a complex movement. So is your laundry like this? ! 2
While the cloth receives a drift washing effect due to large friction between the cloths due to rough movements and large friction with the circumferential wall of the tank upper part 5b and the circumferential wall of the container-shaped agitator 6, it also produces a type of massaging effect due to repeated twisting and pressure. The cleaning effect is shown in Figure 3 as an example of the results of a comparative experiment.
shows the cleaning ratio characteristics when according to the present invention, B when using the conventional rotating blade method, and C when using the washing tank rotating method considered prior to this invention, and the cleaning performance according to the present invention is superior. I understand that.

Furthermore, as mentioned above, the laundry is moved by the frictional contact with the peripheral wall of the tank el (5b) and the peripheral wall of the container-shaped agitating body 6, so as the number of cloth m increases, the frictional force also increases, and the laundry increases due to the increase in the amount of cloth. The rate of decrease in the degree of movement of the laundry is small, and therefore the rate of decrease in the cleaning effect is small.Moreover, when the amount of laundry is small, the frequency of contact with the peripheral wall of the container-shaped agitator 6 is low, and the contact friction force is extremely small, so that the surface area is reduced as dirt. Due to the low speed rotation of the large container-shaped agitator 6, the water is flowed and washed by the water flow generated over almost the entire inside of the fixed tank 5.
Unlike the conventional rotary blade system, the water flow does not become extremely strong, so there is no excessive cleaning, and an appropriate degree of cleaning can be ensured regardless of the amount of cloth. These facts mean that the range of cloth amounts that can maintain an appropriate cleaning effect is wider than in the case of the prior art described above (see FIG. 3).

By the way, at J3 during the above-mentioned washing, the laundry is inserted in the direction of the peripheral wall by the centrifugal force accompanying the rotation of the container-shaped agitator 6. In this case, assuming that the annular recess 10 and the annular convex wall 11 are not provided, the upper end of the peripheral wall of the container-shaped agitator 6 that rotates the laundry pushed in the direction of the peripheral wall and the lower end of the tank upper part 5b of the fixed tank 5 It is bitten into the gap between the containers, and is pulled out for a long time into the tank lower part 5a over the upper end of the container-shaped stirring body 6, making it difficult to return to the tank upper part 5b or into the container-shaped stirring body 6. , the problem arises that the container-shaped stirring body 6 continues to rub it for a long period of time, causing it to be torn into pieces. However, in this embodiment, the space between the upper end of the container-shaped agitator 6 and the lower end of the tank upper part 5b is closed by the annular convex wall 11 and the ball 12, so that the laundry cannot be washed. Even if it gets stuck in the gap between the lower end of the tank upper part 5b and the upper end of the container-shaped stirring body 6, it will not be able to get over the upper end of the container-shaped stirring member 6 and be pulled out well into the tank lower part 5a. The laundry bitten into the gap can easily return to the upper part of the tank 5b or into the container-shaped agitator 6, and there is a risk that the laundry will be rubbed by the container-shaped agitator 6 for a long time and be torn into pieces. disappears. In addition, since the container-shaped agitator 6 rotates while rolling the balls 12, its rotational resistance is small, and the ball 12 maintains a constant gap with the lower end of the tank upper part 5b, so that it does not slide against the lower end of the borrowed part 5b. Since there is no contact, the size of the gap can be made as small as possible, and it is possible to prevent the washed items from digging into the gaps, and also to prevent the risk of the laundry sliding against the upper end of the container-shaped agitator 6 and being abraded. .

On the other hand, the dewatering operation of this embodiment is carried out by opening the drain valve 18, releasing the fixed tank 5 from its restraint by the brake mechanism, and rotating the fixed tank 5 and the container-shaped stirring body 6 together in one direction. However, during this dehydration operation, the washed material is also pushed to the top 5 of the tank due to centrifugal force.
There is no possibility that it will enter the gap between b and the container-shaped stirring body 6. Therefore, when a dehydration operation is performed after detergent washing, the problem that the laundry is torn to pieces between the tub upper part 5b and the container-shaped agitator 6 during the next rinsing operation does not occur.

Note that the bearing is not limited to the ball 12, but may be constructed of an annular plate coated with a fluororesin having a small coefficient of friction, for example.An annular recess 10 is formed at the lower end of the tank upper part 5b, and an annular convex wall 11 is formed at the lower end of the tank upper part 5b. It may be formed at the upper end of the shaped stirring body 6. Furthermore, the present invention may be applied to a washing machine without a dewatering function, and in this case, the peripheral wall of the fixed tank may be made non-porous to store water within itself, and the water receiving tank may be removed. Further, it goes without saying that the means for forming the fixed peripheral wall and the movable peripheral wall that form the peripheral wall of the washing tank are not limited to the combination of the fixed tank and the container-shaped agitator in the above-mentioned specific shapes.

〔Effect of the invention〕

According to the present invention, as described above, the laundry mainly comes into contact with the fixed peripheral wall and the movable peripheral wall and is moved by the synergistic effect of the respective frictional forces. Therefore, if the volume of the washing tank is the same, the number of clothes that can be washed in one cycle is much larger than that of conventional methods.Moreover, it is possible to expect better cleaning effects than conventional methods, and there is less damage to the fabric, allowing for proper washing. Since the range of the amount of cloth that can maintain the effect is wide, it is possible to avoid excessive or insufficient cleaning effect due to the cloth.

Further, according to the present invention, the lower end of the fixed peripheral wall and the lower end of the movable peripheral wall are fitted into each other, and a bearing is interposed between them, so that the laundry can slide onto the upper end of the movable peripheral wall on which the laundry rotates. This has significant effects such as being able to prevent the occurrence of ``@'' conditions such as being cut by contact or being bitten between the fixed peripheral wall part and the movable peripheral wall part, resulting in a piece of cloth.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal side view;
FIG. 2 is an enlarged longitudinal sectional view of the main part, and FIG. 3 is a cleaning ratio characteristic curve diagram. In the figure, 4 is a washing tank, 5 is a fixed tank, 5b is the upper part of the tank (fixed peripheral wall part), 6 is a container-shaped 1j2 stirring part (movable peripheral wall part), 10 is an annular recess, 11 is an annular convex wall, and 12 is a ball. (bearing). No. 1, No. 2, No. 3, No. 6, Amendment to the procedure to be amended, 1981 New Ko 1, 1, Indication of the case, Japanese Patent Application No. 1983-196094, No. 2, Title of the invention: Washing machine 3, Person making the amendment Relationship to the case Patent applicant Doorshiba (307) Toshiba Corporation 4, agent The same parts as in Figure 2 are given the same reference numerals, and different parts of the detailed description of Claim 2 of the invention and drawings are attached. Each column with a brief explanation and drawings. 7. Contents of amendment <1) ￥r The scope of claims is amended as shown in the attached sheet. (2) "Fitting...(Ai formation)" written in the second to third lines of page 4 of the specification is corrected to "closing J, which brings them into contact with each other through bearings." (3 ) "Drawings" written on page 4, line 9 of the same page are corrected to "Figures 1 to 3." (4) "Sa II IC" written on page 6, line 8 of the same page is corrected. ``On the other hand,'' ``The upper end of the J dust tank upper part 5b and the upper end of the container-shaped stirring body 6 are in contact with each other via the ball 12.'' is done by one person. . (5) Add the following sentence on a new line between "Good." and "Furthermore" written on page 12, line 7. The fourth cabinet is an embodiment of the pond of the present invention, and will only be described in detail. At the upper end of the tank upper part 5b and the container-shaped stirring body 6, there are annular recesses 20 that open downward and upward, respectively. and 21, and an annular protrusion 20a protrudes from the center of the tank upper part 5b.A ball 22 serving as a bearing is inserted into both the recesses 20.
and 21, and the annular projection 20a is brought into contact with the ball 22. In this case, the depth of the annular recess 21 of the agitator 6 on the container is set to half the diameter of the ball 22, and the tips of the circumferential walls of the annular recesses 20 and 21, which face each other with a slight gap, are both connected to the ball 22. It is positioned at approximately medium heat in the height direction. Even in this case, the same effect as that of the above embodiment can be obtained. (6) "Furthermore" written on page 12, line 7 of the same document is corrected to "furthermore," with a new line. (7) "Because of the fitting structure..." stated in the 6th to 7th lines of page 13, the statement has been corrected to "because the fitting structure was made to face each other through a bearing." (8) "The drawings" written on page 13, line 13 are corrected to "Figures 1 to 3." (9) "is" written on page 13, line 15 of the same document is corrected to "is, and FIG. 4 is a diagram equivalent to FIG. 2 showing another embodiment." (10) Add Figure 4 to the drawings as attached. 2. Claim 1: The peripheral wall of the washing tank is placed above 7j1. ：The fixed peripheral wall part located below and the fixed peripheral wall part which is located below and is driven in forward and reverse rotation.
A movable circumferential wall section is formed, and the laundry is flown together with water in the washing tub, and the laundry is caused to flow mainly by vibration with the movable circumferential wall section. With the above 8
Igff that receives the fixed foot fixed peripheral wall part of jjq at 1i position
Flll! l! Washing and W is performed by a synergistic effect with the J cavity force, and the upper end of the fixed peripheral wall and the upper end of the movable peripheral wall are brought into contact with each other via a bearing. Washiyaku Kai featuring. 4 Figure

Claims (1)

[Claims] 1. The peripheral wall of the washing tank is composed of a fixed peripheral wall located above and a movable peripheral wall located below that is driven to rotate in forward and reverse directions, and the laundry is stored together with water in the washing tank and the laundry is washed. is made to flow mainly due to the contact friction force with the movable peripheral wall part, and is washed by a synergistic effect with the contact friction force received from the fixed peripheral wall part in the upper part, the fixed peripheral wall part A washing machine characterized in that the lower end of the movable peripheral wall and the upper end of the movable peripheral wall are fitted into each other, and a bearing is interposed between the two.