JP2896673B2 - Washing machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a technique for promoting equalization of contact of a pulsator of a spiral washing machine with laundry. 2. Description of the Related Art In a stirring type washing machine in which washing is performed by a swinging motion of an agitator (a motion of an agitator is usually a vibration motion and a reciprocating motion of less than one rotation with a vibration angle of about 120 °), a water flow is a spiral water flow. And no drawbacks of entanglement and twisting of the laundry. On the other hand, the spiral type washing machine in which the disk-shaped pulsator at the center of the bottom of the washing tub is rotated many times for washing has a drawback that the water flow generates a spiral water flow and the laundry is easily twisted or entangled to form a lump. By the way, if the laundry is twisted or entangled, the laundry becomes a lump, so that only the surface of the lump of the laundry contacts the rotating pulsator, and the contact of the pulsator with the laundry becomes uneven, resulting in poor cleaning effect. , Cause uneven washing. Also, apart from the problems of entanglement and twisting, in a spiral type washing machine, the laundry is drawn to the pulsator by the swirling water flow due to the rotational movement of the pulsator, but the pulled laundry is collected on the disk-shaped pulsator. However, there is a problem that it is difficult to replace the laundry with other laundry, and in this respect, there is a disadvantage that contact between the pulsator and the laundry is uneven. Therefore, in the spiral washing machine, the entanglement of the laundry
It is necessary to prevent twisting and equalize the contact of the pulsator with the laundry. Then, regarding the problem of the entanglement and twist of the laundry, it has been proposed to prevent the entanglement and twist by installing a pillar in the center of the washing tub of the spiral washing machine. For example, Japanese Utility Model Application Laid-Open No. 52-156280 freely rotates a rod from the top of a washing tub into a washing tub, and Japanese Patent Application Laid-Open No. 51-139178 directly connects a conical pillar on a pulsator. 51-37776
It was proposed that one leg of a quadruped placed in the washing tub stand upright to install a pillar to prevent entanglement and twisting of the laundry. "Problems to be Solved by the Invention" However, in the conventional washing machine in which a pillar is installed at the center of the washing tub of the spiral type washing machine, equalization of the contact of the pulsator with the laundry is still insufficient. Therefore, it is necessary to devise the method of installing the pillars and the position of the pillars to promote uniform contact of the pulsator of the spiral washing machine with the laundry. "Means for Solving the Problems" The present invention relates to an improvement in a spiral-type washing machine in which a column is installed at the center of the washing tub of the spiral-type washing machine in which a disk-shaped pulsator is installed at the center of the bottom of the above-mentioned washing tub. The present invention provides a structure capable of remarkably promoting equalization of the contact between the pulsator and the laundry by devising a method of installing the pillars and a position of the pillars. The embodiment will be described in detail with reference to other drawings. FIG. 1 is a perspective view of a main part of an embodiment of a spiral type washing machine according to the present invention, in which a columnar column 1 having a central portion on the upper surface of a disk-shaped pulsator 3 and a cylindrical column having a gap S on an upper portion is a column. The pulsator 3 is connected to the upper surface of the pulsator 3 with a space therebetween and has a rotation center at the center of the bottom of the washing tub provided with a spiral drive mechanism for rotating the pulsator many times. Is done. FIG. 2 is a vertical cross-sectional view taken along a vertical plane passing through the center point and the convex portion 4 of the disk-shaped pulsator 3 in the example of FIG. As shown in FIGS. 1 and 2, a cylindrical column 1 having a gap S at the top is coupled to a central portion of the upper surface of a disk-shaped pulsator 3 via a support column 11, and the rotation of the disk-shaped pulsator 3 is performed. The exercise creates a swirling water flow throughout the wash water in the wash tub. The water flow in the washing tub of the spiral type washing machine is released from the pulsator while rotating in the horizontal plane due to the rotational movement of the pulsator, reaches the lower part of the peripheral wall of the washing tub, and rises while rotating in the horizontal plane along the peripheral wall. And reaches the upper layer of the washing tub, and then descends from the upper layer along the peripheral wall toward the pulsator while approaching the center of the washing tub while rotating horizontally (see JP-A-58-97394, page 1, right column 3-9). Row, FIG.
Many others. Due to the spiral water flow generated by this pulsator, the water current descending toward the pulsator while approaching the center of the washing tub while rotating horizontally from the upper layer along the peripheral wall,
In the spiral washing machine of the present invention, one part is separated near the gap S between the cylindrical pillars and one of them descends along the outer wall of the pillar 1 (lower precipitation Fo along the outer wall of the pillar: arrow Fo in FIG. 2), and the other. Flows into the cylindrical column through the gap S between the cylindrical columns 1 and descends without being hindered by the laundry (lower precipitation flow Fi in the column: arrow F in FIG. 2).
i) Then, after flowing out from the lower end 13 of the cylindrical column 1 to the center of the upper surface of the disk-shaped pulsator 3, the column is connected to the central portion of the disk-shaped pulsator 3 at intervals. On the outer peripheral part 14 of the upper pulsator. What is important is that the cylindrical column 1 has a gap at the top.
When connecting to the pulsator 3 of the spiral washing machine, the lower end 13 of the pillar and the upper surface of the pulsator 3 are connected to the center of the upper surface of the disc-shaped pulsator 3 via the support 11 as a connecting method. Are separated by an interval. If the position of the pillar is not the central part of the pulsator but the pillar covers the entire pulsator, the laundry is prevented from contacting the pulsator. If the column is directly connected to the pulsator without any space between the bottom of the column and the top of the pulsator,
Fi cannot wash away the laundry on the pulsator. If the column is suspended from above to make a space between the column and the pulsator, the laundry gets caught between the column and the pulsator. If a column is provided at the center of the bottom of the basket placed in the washing tub so that an interval is provided between the column and the pulsator, the laundry in the basket cannot contact the pulsator. In the present invention, when the cylindrical column 1 having a gap at the top is coupled to the pulsator 3 of the spiral washing machine, the coupling method is as follows. At the center of the upper surface, the laundry is joined with a gap between the lower end 13 of the pillar and the upper surface of the pulsator 3, so that the laundry can be prevented from being in contact with the rotating pulsator 1 having a large washing effect. And the lower precipitation flow Fi in the above column
The laundry that has flowed upward and is on the pulsator 3 can be washed away from the pulsator 3 to promote uniform contact of the laundry with the pulsator 3. The height of the support 11, that is, the distance between the lower end 13 of the column and the upper surface of the pulsator 3, is such that the water of the spiral water flow generated by the rotational movement of the pulsator 3 flows into the column 1 from the gap S between the cylindrical columns. The shape of the washing tub of the washing machine, the shape and capacity of the pulsator, and the shape of the column, so that the flow from the lower end 13 descending in the column 1 to the upper surface of the pulsator 3 is secured and not too high or too low. It is appropriately selected according to the shape and the like. The lower part 14 of the pulsator 3 is moved down the cylindrical column 1
By selecting the height of the column 11 so that the flow flowing upward is secured, the laundry drawn to the pulsator 3 by the swirling water flow generated by the rotational movement of the pulsator,
Accumulation on the pulsator 3 is prevented. The concave portion 12 on the pulsator 3 secures a flow path of water between the pulsator 3 and the laundry thereon, and is particularly effective when the amount of laundry is large. When the lower precipitation flow Fi in the column 1 is promoted using the water flow promotion means, the column 1 descends, flows out from the lower end 13 to the center of the pulsator 3, and is connected from the center of the upper surface of the pulsator via the column 11. The water flowing out onto the peripheral portion 14 on the upper surface of the pulsator outside the central portion of the disk-shaped pulsator 1 is promoted, the flow of pushing the laundry from the pulsator 3 is strengthened, and the contact of the laundry with the pulsator 3 is improved. Equalization is further enhanced. As a water flow promoting means in the pillar for promoting the lower precipitation flow Fi, for example, a fixed wing is installed inside the lower part of the pillar by expanding the diameter of the lower part of the cylindrical pillar. When the diameter of the lower part of the column on which the wing is installed is widened, the effect of promoting the descending water flow by the wing installed there is improved. And the pillar can also be connected to the pulsator via a pillar which is wider than the diameter of the lower part of the pillar. Also, the struts can be joined or integrated with the wings inside the lower portion of the struts, and the struts can be joined to the protrusions on the pulsator. Further, as the water flow promoting means, for example, a rotating blade in which the inclination of the blade is reversed in accordance with the change of the rotating direction and the water is always supplied downward can be used. Such a rotor effectively promotes the flow of water in a washing machine having a driving device of a conventional spiral type washing machine in which a pulsator rotates a number of times in one direction and then rotates a number of times in reverse. be able to. FIG. 3 and FIG. 4 show such a water flow promoting means.
In FIG. 3, the wing 5 is supported at its upper part by a support shaft 6 connected to the inner wall of the cylinder 1 so as to be freely rotatable and suspended. When the cylinder rotates clockwise as viewed from above, the wing 5 rotates counterclockwise when viewed from the outside of the cylinder with the support shaft 6 as a fulcrum due to the resistance of water, and a part 7 of the lower end of the wing 5 contacts the inner wall of the cylinder, Since the water is fixed in an inclined state, the water is promoted downward. Conversely, when the cylinder rotates counterclockwise, water is similarly promoted downward. When the support shaft 6 is inclined upward, the rotation angle of the blade 5 is widened, and when the support shaft 6 is inclined downward, the rotation angle of the blade 5 is reduced. Wing length,
The shape is also a determining factor of the rotation angle. FIG. 4 shows that the wing 5 is rotatably supported at its upper part on a support shaft 6 connected to the mandrel within a certain rotation angle range,
It is suspended. That is, for example, as shown in FIG. 5, the inclination of the wing 5 is limited by the stopper 9 installed on the support shaft 6. In this example, the mandrel 8 can rotate regardless of the cylinder, so that the mandrel 8 can be rotated at a high speed to strongly promote. The mandrel 8 is coupled to, for example, rotation transmission means which is coaxial with the pulsator 3 but rotates independently. The stopper 9
Can also be used for the rotor of FIG. On the other hand, when the wing 5 is supported by the support shaft 6 in the lower part of the rotating wings, the water is always promoted upward regardless of the rotating direction of the wing. In the present invention in which the column 1 is connected to the pulsator 3 by the column 11, as shown in FIG. 6, the column is rotatably connected to the lower portion 2 of the column via a bearing or the like from the rotational movement of the pulsator 3. You can also. In this case, even if the rotation speed of the pulsator is high, one
The danger of touching the hand is prevented, and the laundry does not have to worry about winding around the pillar 1. Further, the column 1 may be coupled so that the column 1 is free to rotate when the resistance applied to the column reaches a certain value or more. For example, instead of a bearing, a combination of a gear-shaped ring and a claw that comes in and out with a spring may be used. [Effect of the Invention] In the present invention, even if a cylindrical column is installed at the center of the washing tub of the spiral washing machine, the laundry can contact the rotating pulsator, and the laundry can be placed between the column and the pulsator. Without clogging, the water flow descending in the cylindrical column, after descending in the column, flows out from the lower end of the column to the center of the pulsator, and then the upper surface of the rotating body where the column is connected via the column The laundry that has flowed out onto the pulsator outside the central part, that is, onto the pulsator peripheral part, is strongly washed away from the peripheral part on the pulsator upper surface, and the next laundry comes into contact with the pulsator, and one after another. As this is repeated, the equalization of the contact of the rotating pulsator with the laundry is significantly facilitated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a main part of a washing machine according to an embodiment of the present invention in which a pillar and a pulsator are connected via a support, and FIG. 2 is a perspective view of FIG. It is a longitudinal cross-sectional view of a pillar and a pulsator, which are main parts of the washing machine of the embodiment, which are connected via a pillar, wherein a water flow at the time of washing is indicated by an arrow.
FIG. 4 is a perspective view showing the water flow promoting means, FIG. 5 is a partial view of the water flow promoting means, and FIG. 6 is a vertical cross-sectional view of a portion freely rotatably connected at the lower part of the column. DESCRIPTION OF SYMBOLS 1 ... pillar, 2 ... lower part of pillar, 3 ... pulsator 4 ... convex part, 5 ... wing of water flow promotion means, 6 ... support shaft 7 ... part of lower part of wing, 8 ... mandrel , 9 ... stopper 11 ... pillar, 12 ... recess, 13 ... lower end of cylindrical pillar 14 ... peripheral part of pulsator upper surface, Fi ... lower rainfall flow in pillar Fo ... lower rainfall flow along pillar outer wall , 10 ... bearing, S ...
… Gap

Claims (1)

(57) [Claims] In a spiral washing machine having a disk-shaped pulsator having a rotation center at the center of the washing tub, a column having a cylindrical shape and a gap at an upper portion is spaced apart from a lower end of the column and an upper surface of the disk-shaped pulsator. Is connected to the central portion of the upper surface of the pulsator via a support, and the water flowing into the cylindrical pillar from the gap descends through the cylindrical pillar due to the rotational movement of the pulsator, and a disk is formed from the lower end of the cylindrical pillar. After flowing out to the center of the upper surface of the pulsator, the column flows from the center of the upper surface of the pulsator onto the peripheral portion of the upper surface of the pulsator outside the central portion of the disk-shaped pulsator to which the pillar is connected via a support. A swirl-type washing machine characterized by flushing laundry on a pulsator.