JPH0346160B2 - - Google Patents

Description

[Detailed description of the invention] (b) Industrial application fields The present invention relates to a washing machine.

(b) Conventional technology The washing machine that corresponds to the conventional example is
This is shown in the publication (D06F17/06), and will be explained based on FIG.

1 is a washing tub installed inside the machine frame 2; 3 is a rotary blade pivotally supported at the center of the bottom of the washing tub 1; 4 is a motor connected to the rotary blade 3 via pulleys 5 and 6;
Reference numeral 7 denotes a holding plate detachably attached to the tip of a rod 8 protruding from the center of the rotary blade 3, and has a back blade 9 on its lower surface.

The rotary blade 3 is reversed by the motor 4 to agitate the laundry, and the presser plate 7 prevents the laundry from floating. Further, the back blade 9 of the presser plate 7 also forms a water flow in the tank.

However, as mentioned above, the purpose of this presser plate 7 is to prevent laundry from floating, and when washing is carried out at a lower water level than the presser plate 7, for example when washing a small amount of laundry, It serves no purpose and does not necessarily contribute to improving cleaning power.

(C) Problems to be Solved by the Invention The present invention provides a washing machine that is particularly excellent in cleaning heavily soiled small items.

(d) Means for Solving the Problems The washing machine of the present invention includes a washing tub, a rotary blade disposed at the bottom of the washing tub, and a rotary blade installed at the center upper part of the rotary blade that rotates synchronously with the rotary blade. The auxiliary wing is provided with a diameter smaller than that of the rotary wing, and a back blade is provided on the lower surface of the aileron wing, and the aileron wing is spaced apart from the upper surface of the rotary wing by a predetermined distance. and is located below the lowest water level in the washing tub, and furthermore, the upper surface of the aileron is sloped downward from the center toward the periphery.

(E) Effect: In other words, remove heavily soiled small items such as socks and work gloves.
It is placed between the rotary wing and the aileron, and by rotating both wings, the blades of the aileron and the rotor are strongly scrubbed.

Furthermore, even if these small items were to be thrown onto the aileron, the upper surface of the aileron is sloped downward toward the periphery, so the small items would fall onto the periphery of the aileron according to this inclination. It moves and is quickly guided from the periphery between the rotor and the underside of the aileron.

(f) Embodiments Examples of the present invention will be described based on the drawings.
However, the same symbols are used for the same parts as in the conventional example,
The explanation will be omitted.

Reference numeral 10 denotes a blade shaft to which the driving force from the motor 4 is transmitted, and to which the rotary blade 3 is attached. The rotary blade 3 has a large diameter that occupies most of the bottom surface of the washing tub 1, has a mountain-shaped shape, and has three blades 11 every 120 degrees along the ridgeline.

12 is an overflow filter, and the water level is displayed as high, medium, and low to serve as a guide when washing clothes.

Now, reference numeral 13 denotes an auxiliary blade having a smaller diameter than the rotor blade 3, and has back blades 14 formed radially on the lower surface, and a fitting hole 15 in the center that fits into the top of the rotor blade 3. is formed. Further, the upper surface of the aileron 13 is sloped downward by C from the center to the peripheral edge. The upper hole edge of the fitting hole 15 provided in the aileron 13 is threaded, and the top of the rotary wing 3 is also threaded to allow the aileron 13 to rotate. Wings 3
After fitting onto the top of the holder, a bolt-shaped fitting 16 is used to connect the two. Here, the aileron 13 and the rotary blade 3 are such that the upper surface of the aileron 13 is located below the low water level during washing, and small items such as socks and work gloves are placed between the aileron 13 and the rotary blade 3. Distance D large enough to fit the class
Its height is adjusted so that it is formed.

In such a washing machine, in order to wash small items such as heavily soiled socks and work gloves, these small items are placed between the rotary blade 3 and the auxiliary blade 13 so that the rotary blade 3 is auxiliary. It is reversed left and right together with the blade 13 at low speed and in a short period. Then, the back blade 1 of the aileron 13
4 and the blades 11 of the rotary blades 3, it is possible to scrub strongly.

Further, since the upper surface of the aileron 13 is inclined, even if the small items are placed on the upper surface of the aileron 13, the small items will descend along the upper surface, and the space between the aileron 13 and the washing tub 1 will be lowered. can be quickly guided between the ailerons 13 and the rotor blades 3.

FIG. 4 shows another embodiment of the rotary blade and the auxiliary blade, in which the shape of the blade and the connection mechanism between the blades are changed. That is, the rotary blade 17 has a planar shape, and a triangular prism-shaped blade boss 19 protruding from the center is connected to the blade shaft 10 and into which the auxiliary blade 18 is fitted.

On the other hand, the auxiliary wing 18 has an outer fitting part 20 integrally provided vertically from the periphery of the opening 18a provided at the center thereof, and further extends from the end of the outer fitting part 20 to the wing boss. An inner fitting portion 21 having an inverted U-shaped cross section is formed to be fitted into the inner fitting portion 19 . and,
The opening 18a is provided on the outer surface of the inner fitting portion 21.
A fixing member 22 having a convex cross section is fitted from above via a spring 23. 24 is the opening 1
8a, and is for restricting the upward movement of the fixing member 22 urged by the spring 23, and the cylindrical part 24a into which the protrusion 22a of the fixing member 22 is inserted is a cap. It is erected.

Now, several cone-shaped recesses 25 are formed along the peripheral wall of the wing boss 19, and
Holes 26 are formed in the inner fitting portion 21 at positions corresponding to the recesses 25, and the diameters of the holes 26 are gradually reduced from the outside to the inside. Further, recesses 27 are also formed in the inner peripheral wall of the fixing member 22 slightly above the holes 26. Therefore, normally, the outside of the hole 26 is closed by the inner circumferential wall 22b of the fixing member 22.

28 is a spherical body disposed within the hole 26, and its diameter is set slightly larger than the inner diameter of the hole 26 and the wall thickness of the inner fitting part 21. Normally, a portion of the hole protrudes inward from the hole 26.

In order to attach the auxiliary blade 18 to the rotary blade 17, first, the fixing member 22 is pushed down so that it corresponds to the recess 27...the hole 26....
Then, the sphere 28 moves into the recess 27 along the slope of the inner surface of the hole 26.
In this state, the inner fitting portion 21 is attached to the wing boss 19.
(state shown in Figure 4 A). Then, when you release your hand, the fixing member 22 moves to the spring 23.
The recess 27 returns upward due to the bias of the
also moves upward, and the spheres 28 are pushed to the left by the inner circumferential wall 22b of the fixing member 22, and a part of them protrudes inward from the hole 26, that is, into the recess 25. Figure 4 (b) condition). In this way, the spheres 28 engage with the recesses 25, thereby preventing the ailerons 18 from slipping upward.

To remove the auxiliary blades 18, the reverse operation may be performed, and by pushing down the fixing member 22, the engagement of the spheres 28 with the recesses 25 is released.

In such an embodiment, the attachment and detachment of the aileron 18 becomes easier, and the rotor blade 17 - the aileron 18 can be easily attached and detached after washing.
It is easy to take out the laundry in between.

FIG. 5 shows the second embodiment in which the aileron 18 is screwed to the wing boss 19 with bolts 29, and although it is less easy to attach and detach, it is useful for cleaning small items. Basically, this is the way to fasten it.

Furthermore, if the height of the rear blade 14 of the aileron blade 18 is made higher toward the outer circumference, small objects can be easily removed from the rotor blade.
7 and the aileron 18, and is held there for a long time, so that a stronger frictional effect can be applied.

FIG. 6 shows the results of an experiment in which the rotary blade 17 and the auxiliary blade 18 of the second embodiment were employed in a two-tub washing machine. From this figure, by lowering the peripheral edge of the aileron 18 compared to the center (solid line in the figure), small items are guided downward and quickly enter between the rotary blade 17 and the aileron 18. , it can be seen that the cleaning ratio is higher than when the upper surface of the aileron 18 is made into a flat plate shape (the peripheral edge is not lowered, indicated by the dotted line in the figure). Furthermore, the diameter A of the aileron 18
It can be seen that a high cleaning ratio can be obtained by setting the diameter B to 70 to 90% of the diameter B of the rotary blade 17.

Note that this experiment targeted only small items, and the purpose was to wash between the rotary blade 17 and the aileron 18, so the water level was set to just above the top of the aileron 18 (the amount of water was approximately 15 cm). . Therefore, the water level line just above the top surface of the aileron 18 becomes the lowest water level in the present invention. This water level line may be displayed on the washing machine.

(G) Effects of the Invention The washing machine of the present invention disposes heavily soiled small items such as socks and work gloves between the rotary blade and the aileron blade, and scrubs the small items strongly with the rotary blade and the back blade of the aileron blade. It can exert a strong frictional effect on small items, and is highly effective in cleaning these small items.

Furthermore, since the upper surface of the aileron is sloped downward toward the periphery, small objects on the upper surface of the aileron can be quickly guided between the rotary blade and the aileron.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the main parts of the washing tub in the washing machine of the present invention, Fig. 2 is a plan sectional view thereof, Fig. 3 is a bottom view of the aileron, and Fig. 4 A and B are the second embodiment. 5 is a sectional view of the main parts in the third embodiment, FIG. 6 is a cleaning characteristics diagram of the washing machine of the second embodiment, and FIG. A sectional view of a main part of a conventional washing machine, FIG. 8 is a bottom view of the aileron, and FIG. 9 is a side view of the same. 1...Washing tub, 3,17...Rotary blade, 13,1
8... Aileron, 14... Back blade, D... Spacing.

Claims (1)

[Claims] 1. A washing tub, a rotary blade disposed at the bottom of the washing tub, and an auxiliary blade provided at the upper center of the rotary blade so as to rotate in synchronization with the rotary blade and having a diameter smaller than that of the rotary blade. , and a back blade provided on the lower surface of the aileron blade, the aileron blade being positioned at a predetermined distance from the upper surface of the rotary blade and below the lowest water level in the washing tub. established so that
Furthermore, the washing machine is characterized in that the upper surface of the ailerons is sloped downward from the center toward the periphery.