JPH026940Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a new electric washing machine that employs a so-called rubbing washing method.

[Technical background of the invention] Up to now, many different types of electric washing machines have been proposed, but most of them are of the vortex type in which a vortex is generated by a stirring impeller called a pulsator. However, this whirlpool type washing machine has essential drawbacks such as severe damage to the fabric and the tendency for laundry to get tangled. On the other hand, resource conservation measures are being promoted from various aspects including water conservation.
As long as this eddy current method is adopted, it naturally has its limits.

[Purpose of the invention] This invention was created in view of the above-mentioned drawbacks of the whirlpool method.The purpose of this invention is to use a rubbing washing method instead of the whirlpool method, thereby minimizing damage to the cloth, tangles, etc. Another object of the present invention is to provide an electric washing machine that can save water and improve washing performance.

[Example] Hereinafter, an example of this invention will be described in detail with reference to the accompanying drawings.

This washing machine, as shown in Figure 1,
It has an outer box 1 consisting of a decorative panel etc.
is divided into a lower chamber 4 and an upper chamber 5 by a partition plate 2 and a seal packing 3, as is well known. A reversible rotary electric motor 6 is supported in the lower chamber 4 via an appropriate number of support springs 7, while a washing tub 8 is housed in the upper chamber 5, which is connected to the seal packing. 3 and is supported by a drive shaft 9 of an electric motor 6 that protrudes into the upper chamber 5. in this case,
The drive shaft 9 consists of a double shaft, that is, an inner rotating shaft 10 and a cylindrical outer rotating shaft 11 arranged around the inner rotating shaft 10. The inner rotating shaft 10 has a spring pin 12.
The outer rotating shaft 11 is selectively connected to the clutch shell 13 via a one-way clutch, e.g. a spring clutch 14. . As shown in FIG. 2, the spring clutch 14 consists of a coil spring wound with a diameter slightly smaller than that of the outer rotating shaft 11 and the clutch barrel 13, and this coil spring straddles the outer peripheral surfaces of both. It is fitted in such a way that it hangs. Here, if it is assumed that the spring clutch 14 is fitted in a clockwise direction when viewed from above in FIG. The outer rotating shaft 11 is separated from the clutch body 13 because it winds around and connects the two, but when the electric motor 6 rotates to the left, it unwinds slightly. In addition, the reference numeral 15 is a known brake device that turns on and off according to the driving torque of the electric motor 6.
6 is a brake drum arranged around it.

The washing tub 8 includes a bottomed cylindrical outer tub 17 made of hard synthetic resin, and a washing container 18 made of an elastic and flexible material such as soft rubber and mounted inside the outer tub. The outer tank 17 is connected to the outer rotating shaft 11 via a coupling member 19 at its bottom. Laundry container 18
is attached so as to be suspended around the opening periphery of the outer tank 17, and a folded part 20 having a V-shaped cross section is formed on the upper peripheral wall thereof, and a plurality of annular folds 21 are formed on the bottom wall. are arranged concentrically. A pressing means 22 is provided between the outer tub 17 and the washing container 18, which rolls along the outer peripheral wall of the washing container 18 while pressing the washing container 18 from the outside and elastically deforming the washing container 18. This pressing means 22 actually consists of a roller member having a vertical axis of rotation, only one of which is shown in FIG. 1 for convenience of explanation, but in this embodiment it is as shown in FIG. are placed symmetrically on the left and right. These pair of roller members 22, 22 are connected to the inner rotating shaft 10.
The rotary arm 23 is rotatably supported at both ends of a rotating arm 23 which is pivotally supported at the upper end via a suitable bearing, and is driven by the electric motor 6 via a driving force transmission mechanism including, for example, a belt. It's summery. That is, a first pulley 24 is fixed to the inner rotating shaft 10, and the roller member 22 has a roller shaft 25, which is connected to the first pulley 24 through a belt 26. A second pulley 27 that is connected to the outer tank 17 and a small gear 29 that meshes with an annular guide gear 28 provided on the bottom wall of the outer tub 17 are provided. Therefore, when the inner rotary shaft 10 is rotated by the electric motor 6, the driving force is transmitted to the roller shaft 25 via the first and second pulleys 24, 27 and the belt 26, and the roller member 22 is thereby The washing container 18 is guided by a guide gear 28 meshing with a gear 29 and revolves around the washing container 18 while rotating on its own axis. On the other hand,
The washing container 18 is provided with a stirring rod 30, which rotates eccentrically within the container 18 when the electric motor 6 rotates the roller member 22. That is, the rotating arm 2
3 has a support 32 eccentrically installed on a bearing housing 31 with respect to the inner rotating shaft 10, and a fitting 33 that projects into the washing container 18 in a watertight manner is pivotally supported on this support 32. , the stirring bar 30
is detachably supported by this fixture 33.
In this case, the stirring rod 30 is made of a hollow pipe having a height reaching near the upper opening of the washing container 18, and a plurality of openings 34 are provided in the lower peripheral wall thereof. Thereby, especially during rinsing, water can be supplied from the bottom of the washing container 18 via the stirring rod 30. Furthermore, a spirally formed stirring blade 40 is attached to the upper outer circumferential wall of the stirring rod 30. The design of the opening 34 and the mounting position of the agitating blade 40 can be changed as desired, and by providing the agitating rod 30 with a slight inclination, it is possible to impart a more complex washing action to the laundry. An inner lid 35 having a corrugated cross section and covering the upper opening of the washing container 18 is detachably attached to the stirring rod 30. On the other hand, a slider 36 is attached to the bearing housing 31 of the rotating arm 23, and a disk-shaped support plate 37 supports the bottom of the washing container 18 via the slider 36.
is installed. Note that reference numeral 38 is a balance ring attached to the upper opening of the washing tub 8.

Next, the operation of this washing machine will be explained. First, the laundry is put into the washing container 18 and water is poured into it, but in this case, unlike the whirlpool type, a large amount of water is not required, and the amount of water that is sufficient to soak the laundry is sufficient. When a switch (not shown) is operated to rotate the electric motor 6 to the left, the spring clutch 14 is disengaged as described above, so that only the inner rotating shaft rotates. Therefore, the first and second
The rotational driving force of the electric motor 6 is transmitted to the roller shaft 25 via the pulleys 24, 27 and the belt 26,
The roller member 22 is guided by a guide gear 28 meshing with a small gear 29, and rolls along the outer peripheral wall of the washing container 18 while elastically deforming the washing container 18 as shown in FIG. Meanwhile, the stirring rod 30 also rotates eccentrically. Thereby, the laundry is washed by rubbing or pressing. According to this washing method, compared to the conventional whirlpool method, there is extremely less damage and tangles to the cloth, and there is no uneven washing, resulting in superior cleaning performance. in this case,
The eccentric rotation of the stirring rod 30 loosens the clumps of laundry in the center of the container, and the stirring blades 40
Effective washing is achieved by this action, and even a small amount of laundry can be washed without any problem. Furthermore, it is also possible to dissolve powdered soap made from animal and vegetable oils, which are difficult to dissolve using the vortex method. Dewatering is performed by rotating the electric motor 6 in the reverse direction. That is, when a switch (not shown) is operated to rotate the electric motor 6 to the left, the spring clutch 14 wraps around the outer rotating shaft 11 and the clutch barrel 13, thereby connecting them. Therefore, since both the inner rotating shaft 10 and the outer rotating shaft 11 are rotationally driven in the same direction and at the same speed, the outer tank 17,
The washing container 18 and the roller member 22 rotate together at high speed. Due to the strong centrifugal force generated during this high-speed rotation, the washing water in the washing container 18 is discharged from the gap between the container 18 and the balance ring into the upper chamber 5 of the outer box 1, and then to the outside through the drain port 39 of the partition plate 2. Drained. By repeating this several times, rinsing and dehydration can be performed in the washing container 18. In this case, by supplying water from the lower part of the washing container 18 through the inside of the stirring rod 30 and the opening 34, it is possible to further reduce waste of rinse water.

[Effects] As is clear from the above-mentioned embodiments, according to this invention, laundry can be washed in a washing container by massaging or pushing. Therefore, compared to the whirlpool type, there is extremely less damage to the cloth, tangles, etc., and it is possible to achieve excellent cleaning without uneven removal. In this case, since a stirring rod that rotates eccentrically is provided inside the laundry container, the clumps of laundry in the center of the container are loosened, and the action of the stirring blades promotes the vertical movement of the laundry. More effective washing is performed, and even a small amount of laundry can be washed without any problem. Furthermore, this washing method has excellent detergent solubility, so it is easy to use various powder soaps that are difficult to dissolve in the whirlpool method. On the other hand, when washing and rinsing, there is no need to use a large amount of water as with the whirlpool type, and the amount of water is sufficient to soak the laundry, making it possible to save a lot of water and reduce the amount of water used in the washing tub. It is possible to downsize and design the whole compactly.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of an electric washing machine according to this invention, FIG. 2 is a drawing for explaining a spring clutch, and FIG. 3 is a cross-sectional view taken along the line - in FIG. In the figure, 1 is the outer box, 6 is the electric motor, 8 is the washing tub,
9 is a drive shaft, 17 is an outer tank, 18 is a washing container, 22
is a roller member, and 30 is a stirring bar.

Claims (1)

[Claims for Utility Model Registration] A cylindrical laundry container with a bottom made of elastic and flexible material such as soft rubber, and its outer circumferential wall being partially pressed inward in the radial direction from the outside of the laundry container to cause elastic deformation. a pressing roller arranged to rotate around the axis of the container while rotating; and a pressing roller erected at a position eccentric to the axis at the bottom of the washing container;
a stirring rod having a length whose upper end reaches near the upper opening of the container; an electric motor; and a stirring rod connected between the electric motor and the pressing roller to rotate the pressing roller about the axis of the washing container. a first rotary driving force transmitting means; and a second rotary driving force transmitting means that is located between the electric motor and the stirring bar and rotates the stirring rod about the axis, No, the pressing roller rotates around the washing container, and the stirring rod rotates around the axis within the washing container. An electric washing machine characterized by being provided with stirring blades formed in a shape.