JPH06154471A - Washing machine - Google Patents

Abstract

PURPOSE:To prevent a foreign matter such as a hairpin from intruding to a water exhaust hole when the water in a washing tub is to be exhausted. CONSTITUTION:A pulsator 5 is rotatably accommodated in a recess 3a formed at the inside bottom of a washing tub 3, and the first rib 24 in the form of a ring is formed upright at the periphery of the recess 3a in such a way that the top is positioned close to the pulsator 5, and further a second rib 29 is furnished as surrounding the periphery of a water exhaust hole 10 which is located within the recess 3a and exhausts the water in the tub 3 to outside the machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine for preventing foreign matter from entering a drain when draining water in a washing tub.

[0002]

2. Description of the Related Art Conventionally, in a washing machine, especially a two-tub type washing machine, a pulsator is rotatably housed and disposed in a recess formed by recessing the bottom of the inside of the washing tub, and a drain port is also provided in the recess. A circular rib is erected on the peripheral edge of the recess so that the upper end is close to the pulsator, and the recess is substantially closed by this rib and the pulsator to discharge the water during drainage. In addition, foreign matter such as hairpins did not flow into the drainage.

[0003]

However, if the foreign matter blocked here is accumulated on the annular rib, the foreign matter will eventually get over the rib, and eventually,
It sometimes flowed into the drain. If the pulsator has a drainage hole due to the concave shape, the foreign matter enters the drainage hole directly from the drainage hole, not from the periphery of the pulsator. The drainage hose could be damaged or clogged. The present invention has been made in view of the above circumstances, and it is an object of the present invention to prevent foreign matter from entering a drain port.

[0004]

In order to achieve the above object, in the present invention, a pulsator is rotatably accommodated in a recess formed in the bottom of the washing tub.
A ring-shaped first rib that is provided upright on the periphery of the recess and is formed so that the upper end is close to the pulsator, and surrounds the periphery of the drain port that discharges the water in the washing tub to the outside of the machine in the recess. It is characterized by having a second rib. Further, when the drain hole is formed in the pulsator, it is characterized in that it is formed so as to face a portion between the first rib and the second rib.

[0005]

According to the above means, the water stored in the tank at the time of drainage is the gap between the pulsator and the tank or the pulsator.
It flows through the drainage hole of the tank to the drainage port. At that time, of course, the foreign matter that has flowed in from the gap between the pulsator and the tank is blocked by the first rib, and even if the foreign matter flows over the first rib and enters the recess, the foreign matter does not flow around the drain port. The surrounding second rib can prevent foreign matter from entering the drain outlet. Further, even when a foreign matter such as a hairpin flows in directly from the drainage hole of the pulsator together with the drainage, the second rib can also prevent the foreign matter from entering the drainage port.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. First, in FIGS. 5 and 6 showing the two-tub type washing machine, reference numeral 1 is an outer box in the shape of a rectangular tube, in which a tub 2 is arranged. The tub 2 is divided into a washing tub 3 and a dehydration tub 4 by a partition wall 2a. A recess 3a is formed in the washing tub 3 by recessing the bottom as will be described later, and the pulsator 5 is rotatably disposed in the recess 3a. On the other hand, a washing motor 7 is mounted on the base plate 6 provided so as to close the lower surface of the outer box 1.
The washing motor 7 and the pulsator 5 are connected by a belt transmission mechanism 8 so that the pulsator 5 is driven to rotate as the washing motor 7 operates. On the other hand, washing tub 3
A drainage port 10 is formed at the bottom of the pulsator 5, that is, in the recess 3a, and a connection pipe 9 is led from the drainage port 10 from the outer bottom side of the washing tub 3. The connecting pipe 9 is discharged from the drainage port 10 and connected to the drainage hose 12 via the drainage valve 11, so that the water in the washing tub 3 is operated through the drainage hose 12 by the operation of the drainage valve 11. It is designed to be discharged outside. On the other hand, a dehydration basket 13 is provided in the dehydration tank 4. Dehydrated basket 13
Is connected to a dehydrating motor 14 mounted on the base plate 6, and is directly driven to rotate with the operation of the dehydrating motor 14, and the dehydrated water is connected via a connecting pipe 15. The water is discharged from the drain hose 12 to the outside of the machine. On the other hand, 16 is an overflow chamber formed by bulging the right back corner of the washing tub outward, and an overflow port 17 is formed on the lower surface of the overflow chamber 16. An overflow pipe 19 connects the overflow port 17 and the drain hose 12.

On the upper part of the outer box 1, an operation panel 20 is provided.
The operation panel 20 has a water supply hose receptacle 20a, a washing timer 20b, and a dehydration timer.
20c, the drain cock 20d, etc. are provided. A hose hook (not shown) is provided above the side surface of the outer box 1. By hooking the hook 21 of the drain hose 12 on the hose hook, the drain hose 12 is leaned against. I'm supposed to leave it.

Now, the essential parts of the present invention will be described in detail with reference to FIG. 1 and FIG. 2. Reference numeral 24 is a ring-shaped surrounding of the recess 3a and has notches 23 at appropriate plural positions. One rib forms an annular groove 25 between the rib and the concave portion 3a, and a flange portion 26 formed by hanging the peripheral end portion of the pulsator 5 is faced in the groove 25. Therefore, the first rib 24 is arranged close to the back surface of the pulsator 5. The recess 3a is formed one step deeper inward than the first rib 24, and the drainage port 10 also opens outward on the bottom surface 31 thereof. The drain port 10 is located at a position lower than the bottom surface 31 of the recess 3a, and the inclined surface 32 extends from the drain port 10 toward the center of rotation of the pulsator 5 to reach the bottom surface 31 of the recess 3a.
Is formed, and the inclined surface 32 guides the water in the recess 3 a to the drainage port 10. The inclined surface 32 is formed around the portion where the drainage port 10 is formed.
A horseshoe-shaped main rib 27 having an open side, and a straight sub-rib 28 at the open entrance of the main rib 27 are arranged at three positions by shifting the front-back direction, so that the main rib 27 and the sub-rib 28 allow the drainage port 10 to be provided. The surrounding second rib 29 is configured.

To explain the operation of the above construction, first, a predetermined amount of water is supplied into the washing tub 3, laundry and detergent are put in, and the washing timer-20b is set. The rotation is started and the laundry is agitated.
This stirring is continued for a predetermined time and the washing timer-20b is turned off.
Then, drain the washing water. In this case, this is done by operating the drain cock 20d to open the drain valve 11. By this operation, water flows in the order of the inside of the washing tub 3 to the recess 3a, the drainage port 10, the connecting pipe 9, the drainage valve 11 and the drainage hose 12, and finally discharged to the outside of the washing machine. At this time, if a foreign matter such as a matchstick or a hairpin is mixed in the laundry, it also tries to get out of the machine along with the water flow, but the first rib 24 and the pulsator 5 are also discharged. Even if water can pass therethrough, the foreign matter stops here because the gap between and is small, thereby preventing the foreign matter from reaching the drain valve 11. In addition, even if foreign matter gets over this due to dust accumulated near the first rib 24, the main rib 27 or the sub-rib 28 of the second rib 29 again dams the foreign matter and the foreign matter is removed as much as possible. 11 can be prevented. When the water in the washing tub 3 is discharged to the outside of the machine, the water accumulated in the groove 25 flows from the notch 23 into the recess 3a and the inclined surface 32
Through the notch 23 or directly into the drainage port 10. This notch 23
Has a sufficient width for water to pass therethrough, but is narrow enough for foreign matter such as hairpins to pass therethrough, so there is almost no risk of foreign matter flowing out to the drainage port 10.

Next, referring to FIG. 3, a second embodiment will be described. In the pulsator 33 of this embodiment, the second rib 29 surrounding the drainage port 10 and the center of the pulsator 33 are provided. There is a deepest deepest bottom that is located between and, and a drain hole 30 is appropriately formed near this bottom. The second rib 29 is erected so as to be divided into two main ribs 27 and sub ribs 28, as described above. In this case, the foreign matter in the drainage flowing through the gap between the pulsator 33 and the washing tub 3 to the drainage port 10 after washing is stopped by the first rib 24 and the second rib 29 along the way. In addition, foreign matter that directly flows in through the drainage hole 30 is prevented by the main rib 27 or the sub rib 28 of the second rib 29, so that the foreign matter can be prevented from reaching the drain valve 11 as much as possible.

Next, referring to FIG. 4, a third embodiment of the present invention will be described. The second rib 29 surrounding the drainage port 10 is a main rib 27 and a sub-rib as in the first and second embodiments. Rib 2
8, the drainage port 10 is provided slightly closer to the rotation center of the pulsator, unlike the first and second embodiments. Further, the pulsator 34 has a deepest recessed bottom portion located between the first rib 24 and the second rib 29 on the bottom surface in the vicinity of the outer peripheral portion, and a drain hole near this bottom portion. 35 is formed appropriately. Also in the case of this one, foreign matter in the water directly drained from the washing tub 3 through the drain hole 35 after washing is
It is stopped by the main rib 27 and the sub rib 28. Further, foreign substances in the drainage flowing through the gap between the pulsator 34 and the washing tub 3 to the drainage port 10 are also stopped by the first ribs 24 or the second ribs 29 in the same way as above.

[0012]

According to the present invention, it is possible to prevent foreign matters such as pins from entering the drainage port and clogging or damaging the drainage valve or drainage hose when draining water from the washing tub.

[Brief description of drawings]

FIG. 1 is a plan view of an essential part showing a partly cutaway in a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line II-II in FIG.

FIG. 3 is a diagram corresponding to FIG. 2 in the second embodiment of the present invention.

FIG. 4 is a diagram corresponding to FIG. 2 in the third embodiment of the present invention.

FIG. 5 is a rear view of the two-tub washing machine according to the present invention.

FIG. 6 is an external perspective view of the two-tub type washing machine of the present invention.

[Explanation of symbols]

 3 ・ ・ ・ ・ ・ ・ Washing tub 3a ・ ・ ・ ・ Recessed part 5,33,34 ・ ・ Pulsator 10 ・ ・ ・ ・ Drainage port 24 ・ ・ ・ ・ ・ ・ ・ First Rib 29 ・ ・ ・ ・ ・ ・ Second rib 30, 35 ・ ・ ・ ・ Drainage hole

Claims (2)

[Claims] 1. A pulsator rotatably supported on the inner bottom of a washing tub, and the pulsator is housed and disposed in a recess formed by recessing the inner bottom of the washing tub, and the recess is formed. An annular first rib standing upright on the peripheral edge and formed so that its upper end is close to the pulsator, a drain port for discharging the water in the washing tub to the outside of the machine in the recess, and A washing machine comprising: a second rib surrounding a drainage port. 2. A washing machine according to claim 1, wherein the pulsator is provided with a drain hole at a position facing between the first rib and the second rib.