JP2022026600A - Two-tub washing machine - Google Patents

Abstract

To provide a two-tub washing machine which can achieve improvement in certainty of positioning and operability regarding a slide member for holding an expansion/contraction part of an overflow passage.SOLUTION: A two-tub washing machine includes: an overflow port cover 21 mounted on an overflow port of an inner surface part of a washing tub; and a slide member 22 supported so as to slide in the vertical direction Z by the overflow port cover 21. At the overflow port cover 21, a vertical rib 57 and a plurality of horizontal ribs 59 provided at the vertical rib 57 and arranged side by side in the vertical direction Z are provided. The slide member 22 includes: a holding part 24 for holding an expansion/contraction part of an overflow passage for taking in the water overflowing through the overflow port from the washing tub; and a positioning part 72 for positioning the slide member 22 in the vertical direction Z. The positioning part 72 includes: a body part 72C curved so as to swell to the vertical rib 57 side and fitted between the two horizontal ribs 59; and a support part 72D curved so as to swell to the opposite side from the vertical rib 57 side and for supporting the body part 72C.SELECTED DRAWING: Figure 8

Description

The present invention relates to a two-tank washing machine.

The two-tank washing machine described in Patent Document 1 below includes a washing tub and an overflow port cover mounted so as to form an overflow chamber in a part of a side wall of the washing tub. When the water level in the washing tub rises to a predetermined water level, the water in the washing tub overflows into the overflow chamber and is discharged to the outside of the machine.

Jitsukaihei 7-27484

Although there is no specific description in Patent Document 1, the two-tank type washing machine generally includes an overflow channel for discharging the water overflowing from the inside of the washing tub into the overflow chamber to the outside of the machine. Such an overflow channel has an expansion / contraction portion arranged in the overflow chamber, and the expansion / contraction portion is provided with an inlet for taking water in the overflow chamber into the overflow channel. Further, the overflow port cover is provided with a slide member that can slide in the vertical direction. The slide member has a knob portion exposed in the washing tub and a holding portion arranged in the overflow chamber to hold the stretchable portion. When the user picks the knob and moves it in the vertical direction, the slide member slides. Then, the telescopic portion held by the holding portion expands and contracts in the vertical direction, so that the height position of the entrance is changed. This makes it possible to adjust the water level in the washing tub when the water in the washing tub is discharged from the overflow chamber to the outside of the machine.

In such a configuration, a plurality of ribs arranged in the vertical direction are provided on the back surface portion of the overflow port cover facing the overflow chamber. The slide member has a positioning portion that engages with the rib. When the user slides the slide member to change the height position of the entrance of the telescopic part of the overflow channel, the positioning part gets over the rib. When the user stops sliding the slide member, the positioning portion is fitted between two ribs adjacent to each other in the vertical direction among the plurality of ribs, so that the slide member is positioned in the vertical direction. As a result, the height position of the entrance after the change is maintained.

The conventional positioning portion is a claw extending in parallel with the rib of the overflow port cover, and has relatively high rigidity. On the other hand, in each rib, there are some variations in dimensions and the like at the time of molding. When the distance between adjacent ribs is large due to variation or the like, the position of the slide member is loose, and the slide member slides freely as the water level in the washing tub rises and falls. In consideration of such variations, the conventional positioning portion is formed to be large so as to fit tightly between adjacent lateral ribs. Therefore, the slide member can be firmly positioned so as not to slide arbitrarily, but the slide member slides hard. Therefore, the operability is poor for the user who wants to slide the slide member.

The present invention has been made under such a background, and an object of the present invention is to provide a two-tank type washing machine capable of improving positioning reliability and operability of a slide member holding an expansion / contraction portion of an overflow channel. And.

The present invention is a washing tub having an inner surface portion extending in the vertical direction for washing laundry, and allows the overflow port provided on the inner surface portion and the water passing through the overflow port from the washing tub. A washing tub having an overflow chamber for receiving, a dehydration tub arranged side by side next to the washing tub for dehydrating laundry, and an overflow port cover attached to the overflow port, wherein the overflow port cover is provided. A vertical rib that protrudes into the flood chamber and extends in the vertical direction from a back surface portion facing the flood chamber, and a plurality of horizontal ribs that are provided in the vertical rib and extend in the protruding direction of the vertical rib and are lined up in the vertical direction are provided. An overflow port cover, a drainage channel connected to a portion below the overflow port in the washing tub and draining water in the washing tub, and an arrangement in the overflow chamber that can be expanded and contracted in the vertical direction. An overflow channel that has a stretchable portion and takes in water from the overflow chamber from an inlet provided in the stretchable portion and guides it to the drainage channel, and a slide member that is slidably supported in the vertical direction by the overflow port cover. The slide member is arranged on the front surface portion of the overflow port cover opposite to the back surface portion, is exposed in the washing tub, and is operated to slide the slide member. A positioning portion that positions the slide member in the vertical direction by fitting between a holding portion arranged in the flood chamber to hold the telescopic portion and two lateral ribs adjacent to each other in the vertical direction among the plurality of horizontal ribs. The positioning portion is curved so as to bulge toward the vertical rib side and fits between the two horizontal ribs, and the positioning portion bulges toward the side opposite to the vertical rib side. It is a two-tank type washing machine having a support portion that is curved to support the main body portion.

Further, the present invention is characterized in that the support portions are provided on both sides of the main body portion in the vertical direction.

Further, the present invention is characterized in that the knob portion is arranged between the positioning portion and the holding portion in the vertical direction.

Further, the present invention is characterized in that the main body portion when fitted between the two lateral ribs is arranged so as to overlap with substantially the entire area of the lateral ribs in the projecting direction when viewed from the vertical direction. ..

Further, in the present invention, the positioning portion is provided with a notch in which the support portion is cut out from the back surface portion side, and the support portion is narrower than the main body portion in the projecting direction. It is a feature.

According to the present invention, when the user slides the slide member in the vertical direction in order to change the height position of the inlet of the expansion / contraction portion held by the holding portion of the slide member in the overflow channel, the positioning portion of the slide member. Overcomes a plurality of horizontal ribs provided on the vertical ribs on the back surface of the overflow port cover. When the user stops sliding the slide member, the positioning portion is fitted between two ribs adjacent to each other in the vertical direction among the plurality of horizontal ribs, so that the slide member is positioned in the vertical direction. As a result, the height position of the entrance after the change is maintained.
This positioning portion has a main body portion that actually fits between the two ribs and a support portion that supports the main body portion. The main body portion is curved so as to bulge toward the vertical rib side, and the support portion is Since it is curved so as to bulge to the side opposite to the vertical rib side, both the main body portion and the support portion can be elastically deformed. Therefore, even if the distance between the horizontal ribs adjacent to each other in the vertical direction is large due to variations, the main body is elastically deformed so as to spread in the vertical direction and fits tightly between these horizontal ribs. The member can be firmly positioned so as not to slide freely. On the other hand, when the user picks the gripped portion and tries to slide the slide member, both the main body portion and the support portion are elastically deformed, so that the main body portion is smoothly detached from between the adjacent lateral ribs and laterally. Since the ribs are smoothly overcome, the user can smoothly slide the slide member. As a result of the above, it is possible to improve the certainty of positioning and the operability of the slide member.

Further, according to the present invention, even if the user picks the knob portion and tries to slide the slide member to either the upper side or the lower side, the support portions provided on both sides of the main body portion in the vertical direction are elastically deformed. As a result, the main body smoothly separates from between the adjacent horizontal ribs and smoothly gets over the horizontal ribs. Therefore, the slide member can be smoothly slid to either the upper side or the lower side, so that the operability of the slide member can be further improved.

Further, according to the present invention, the grip portion is arranged at a well-balanced position between the positioning portion and the holding portion in the vertical direction, so that the user can easily pick and move the grip portion. Therefore, the operability of the slide member can be further improved.

Further, according to the present invention, the main body of the positioning portion when fitted between the two horizontal ribs is an abbreviation for the horizontal rib in the protruding direction of the vertical rib on the back surface of the overflow port cover when viewed from the vertical direction. It is placed so that it overlaps the entire area. As a result, the main body portion sandwiched between the two lateral ribs fits tighter between these lateral ribs by contacting these lateral ribs in a wide range, so that the slide member does not slide freely. It can be positioned more firmly. Therefore, the certainty of positioning of the slide member can be further improved.

Further, according to the present invention, the positioning portion is provided with a notch in which the support portion is cut out from the back surface portion side of the overflow port cover, so that the support portion is narrower than the main body portion in the protruding direction of the vertical rib. Therefore, it is possible to intentionally reduce the rigidity of the root portion of the main body portion that protrudes toward the back surface portion from the support portion.
When the user slides the slide member, the positioning portion of the slide member gets over while bending the vertical rib and the plurality of horizontal ribs. At this time, in each of the vertical ribs and the horizontal ribs, the tip portion on the side opposite to the base end portion on the back surface portion side bends, but the root portion set to have low rigidity in the main body portion of the positioning portion is the vertical rib. By being pushed by the base end portion and bending in the direction opposite to the tip portion of the vertical rib, the entire main body portion becomes a posture substantially parallel to the bent vertical rib and the horizontal rib. As a result, when the slide member stops sliding and is sandwiched between the two lateral ribs, the main body portion comes into contact with these lateral ribs over a wide area, so that the main body is fitted more tightly between these lateral ribs. , The slide member can be positioned more firmly so as not to slide freely. Therefore, the certainty of positioning of the slide member can be further improved.

It is a schematic vertical sectional front view of the two-tank type washing machine which concerns on one Embodiment of this invention. It is a perspective view of the overflow port cover and the slide member included in a two-tank type washing machine. It is a perspective view of the overflow port cover and the slide member seen from the direction different from FIG. It is a perspective view of a slide member. It is a front view of a slide member. It is a right side view of a slide member. It is a left side view of a slide member. It is a rear view of the overflow port cover and a slide member. It is a perspective view of the main part including the cross section taken along the line AA of FIG. FIG. 9 is an enlarged view of a main part of FIG. FIG. 8 is a cross-sectional view taken along the line AA of FIG. It is a schematic enlarged view about the main part of FIG.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. FIG. 1 is a schematic vertical sectional front view of a two-tank washing machine 1 according to an embodiment of the present invention. In the following, the vertical direction in FIG. 1 is referred to as the vertical direction Z of the two-tank washing machine 1, the upper side of the vertical direction Z is referred to as the upper side Z1, and the lower side is referred to as the lower side Z2. As for the left-right direction, the directions of the components of the two-tank washing machine 1 and the two-tank washing machine 1 are specified based on the left-right direction of the paper in each drawing. Therefore, the left-right direction in one figure may be opposite to the left-right direction in another figure.

The two-tank type washing machine 1 is an electric motor that rotates a housing 2 forming an outer shell thereof, a washing tub 3 arranged in the housing 2, a rotary wing 4 housed in the washing tub 3, and a rotary wing 4. Motor 5, an outer tub 6 arranged side by side with the washing tub 3 in the housing 2, a dehydration tub 7 arranged in the outer tub 6, and an electric motor 8 for rotating the dehydration tub 7. including.

The housing 2 is made of metal, for example, and is formed in a box shape. On the upper surface 2A of the housing 2, a first opening 2B and a second opening 2C that communicate the inside and outside of the housing 2 are formed side by side in the left-right direction. The first opening 2B is arranged on the left side of the second opening 2C. The upper surface 2A is provided with a first door 9A for opening and closing the first opening 2B and a second door 9B for opening and closing the second opening 2C. A display operation unit 10 composed of a touch panel or the like is provided on the upper surface 2A behind the first opening 2B and the second opening 2C.

In this embodiment, the washing tub 3 is arranged in the left region in the internal space of the housing 2. The washing tub 3 includes a substantially cylindrical circumferential wall 3A arranged along the vertical direction Z, a ring-shaped annular wall 3B protruding toward the center of the circular wall 3A while edging the upper end edge of the circumferential wall 3A. It is formed in a bottomed cylindrical shape having a bottom wall 3C that closes the hollow portion of the circumferential wall 3A from the lower side Z2. The washing tub 3 has a central axis J extending in the vertical direction Z through the center of the circle. The radial direction with respect to the central axis J is called the radial direction R. Of the radial directions R, the direction away from the central axis J is referred to as the radial outer side R1, and the direction closer to the central axis J is referred to as the radial inner side R2.

The inner peripheral surface of the circumferential wall 3A is an inner surface portion 3D extending in the vertical direction Z in the washing tub 3. An overflow port 3E is provided in the middle of the inner surface portion 3D in the vertical direction Z. The overflow port 3E is a vertically long opening. The circumferential wall 3A is provided with a hollow projecting portion 3F that projects laterally while edging the overflow port 3E. The internal space of the protruding portion 3F is an overflow chamber 3G recessed laterally from the overflow port 3E, specifically, to the right in FIG. In the following, the overflow chamber 3G is regarded as a space inside the washing tub 3, that is, a space different from the internal space 3H of the washing tub 3. The overflow chamber 3G is arranged on the radial outer side R1 with respect to the internal space 3H, and is in a state of communicating with the internal space 3H via the overflow port 3E.

Inside the annular wall 3B, an entrance / exit 3I communicating with the upper side Z1 is formed in the hollow portion of the circumferential wall 3A. The doorway 3I faces the first opening 2B of the housing 2 from the lower side Z2 and communicates with the first opening 2B. The annular wall 3B is provided with a lid 11 for opening and closing the doorway 3I. The user opens the first door 9A and the lid 11 to open the first opening 2B and the doorway 3I, and puts the laundry L1 in and out of the washing tub 3. The bottom wall 3C is formed in a disk shape extending substantially horizontally, and a through hole 3J penetrating the bottom wall 3C is formed at the position of the center of the circle of the bottom wall 3C.

The two-tank washing machine 1 includes a water supply channel 12 connected to a faucet, a water supply valve 13 provided in the middle of the water supply channel 12, a drainage channel 14 drawn out of the machine, that is, to the outside of the housing 2, and a drainage channel. Further includes a drain valve 15 provided in the middle of 14.

The water supply channel 12 branches into a first branch path 12A and a second branch path 12B, and the first branch path 12A is connected to the annular wall 3B from the upper side Z1. The second branch path 12B is connected to the outer tank 6. A switching member 16 is provided at a branch position between the first branch path 12A and the second branch path 12B in the water supply channel 12. The switching member 16 supplies tap water from the faucet to the first branch path 12A and the second branch path in response to the operation of a lever (not shown) arranged around the display operation unit 10 on the upper surface 2A of the housing 2. Flow to either 12B. The tap water flowing through the first branch road 12A is supplied to the washing tub 3 and collects in the washing tub 3. When the water level in the washing tub 3 exceeds the lower end of the overflow port 3E of the circumferential wall 3A of the washing tub 3, the water in the washing tub 3 flows into the overflow chamber 3G through the overflow port 3E and enters the overflow chamber 3G. Accepted. The water supply valve 13 is provided in the upstream portion 12C of the water supply channel 12 closer to the faucet than the branch position, and is opened and closed to start and stop the water supply.

The drainage channel 14 is connected to a portion of the washing tub 3 below Z2 below the overflow port 3E, specifically, the bottom wall 3C, and drains the water in the washing tub 3 to the outside of the machine. The drain valve 15 is opened and closed to start and stop drainage of the washing tub 3.

The two-tank washing machine 1 is slidably supported in the vertical direction Z by an overflow channel 20 for discharging water in the overflow chamber 3G, an overflow port cover 21 attached to the overflow port 3E, and an overflow port cover 21. Further includes the slide member 22.

The overflow channel 20 has an expansion / contraction portion 20A arranged in the overflow chamber 3G as an upper end portion thereof. The overflow channel 20 extends from the expansion / contraction portion 20A through the lower wall 3K of the protruding portion 3F of the washing tub 3 to the lower side Z2, and is connected to the downstream portion of the drainage channel 14 closer to the outside of the machine than the drain valve 15. Will be done. The gap between the lower wall 3K and the overflow channel 20 is sealed so that water does not leak. The telescopic portion 20A is composed of, for example, a bellows hose, and can be expanded and contracted in the vertical direction Z. The expansion / contraction portion 20A is provided with an inlet 20B. As an example, the inlet 20B is provided at the upper end of the telescopic portion 20A and is in a state of being opened toward the upper side Z1. In the overflow channel 20, the downstream portion 20C closer to the drainage channel 14 than the telescopic portion 20A may be configured by a bellows hose like the telescopic portion 20A, or may be composed of a hose having flexibility but no bellows. May be good.

The overflow port cover 21 is formed in the shape of a vertically long plate. The overflow port cover 21 covers the overflow chamber 3G from the radial inner side R2. In the overflow port cover 21 in this state, the front surface portion 21A of the radial inner side R2 faces the inside of the washing tub 3, and the back surface portion 21B of the radial outer side R1 faces the inside of the overflow chamber 3G. The front surface portion 21A is arranged on the side opposite to the back surface portion 21B in the overflow port cover 21. The overflow port cover 21 is formed with a plurality of slit-shaped water passage holes 21C that penetrate the overflow port cover 21 in the plate thickness direction, that is, in the radial direction R. Strictly speaking, the water flowing from the washing tub 3 through the overflow port 3E into the overflow chamber 3G flows into the overflow chamber 3G through the water passage hole 21C. The overflow port cover 21 will be described in detail later.

The slide member 22 is a holding portion arranged on the surface portion 21A of the overflow port cover 21 and exposed in the washing tub 3 and a holding portion arranged in the overflow chamber 3G to hold the expansion / contraction portion 20A of the overflow channel 20. It has 24 and. The user accesses the slide member 22 from the first opening 2B of the housing 2 and the entrance / exit 3I of the washing tub 3, picks the grip portion 23, and operates the slide member 22 in the vertical direction Z, thereby moving the entire slide member 22 up and down. It can be slid in direction Z. Since the telescopic portion 20A expands and contracts in the vertical direction Z according to the slide of the slide member 22, the height position of the inlet 20B of the telescopic portion 20A is changed. The slide member 22 will also be described in detail later.

The rotary blade 4 is a so-called pulsator, is formed in a disk shape centered on the central axis J, and is arranged on the bottom wall 3C of the washing tub 3. The rotary blade 4 is provided with a rotary shaft 30 extending from the center of the circle to the lower side Z2 along the central axis J. The lower end of the rotating shaft 30 passes through the through hole 3J of the bottom wall 3C, is located on the lower side Z2 of the bottom wall 3C, and is connected to the motor 5. When the motor 5 operates, the driving force of the motor 5 is transmitted to the rotary shaft 30 to rotate the rotary blade 4.

In this embodiment, the outer tub 6 is arranged in the right region in the internal space of the housing 2, and is arranged in the washing tub 3 from the right side. The outer tank 6 is formed in a bottomed cylindrical shape having an entrance / exit 6A at the upper end. The doorway 6A faces the second opening 2C of the housing 2 from the lower side Z2 and communicates with the second opening 2C. The outer tank 6 is provided with a lid 31 that opens and closes the doorway 6A. At the position of the center of the circle on the bottom wall of the outer tank 6, a through hole 6B that penetrates the bottom wall in the vertical direction Z is formed.

The dehydration tank 7 is formed in a bottomed cylindrical shape that is one size smaller than the outer tank 6, and is coaxially housed in the outer tank 6. The dehydration tub 7 can accommodate the laundry L2 inside. A doorway 7A is formed at the upper end of the dehydration tank 7. The doorway 7A is in a state of communicating with the doorway 6A of the outer tank 6 and the second opening 2C of the housing 2 from the lower side Z2. The user opens the second door 9B and the lid 31 to open the second opening 2C, the doorway 6A, and the doorway 7A, and puts the laundry L2 in and out of the dehydration tub 7.

The dehydration tank 7 housed in the outer tank 6 is rotatable around a central axis (not shown) extending in the vertical direction Z. A plurality of through holes 7B are formed in the dehydration tank 7. On the bottom wall of the dehydration tank 7, a rotation shaft 33 extending to the lower side Z2 along the central axis of the dehydration tank 7 is provided. The lower end of the rotating shaft 33 passes through the through hole 6B of the bottom wall of the outer tank 6 and is located on the lower side Z2 of the bottom wall and is connected to the motor 8. When the motor 8 operates, the driving force of the motor 8 is transmitted to the rotating shaft 33 to rotate the dehydration tank 7.

The second branch passage 12B of the water supply channel 12 described above is connected to the upper part of the outer tank 6 from the upper side Z1 and faces the entrance / exit 7A of the dehydration tank 7 from the upper side Z1. The bottom wall of the outer tank 6 and the downstream portion of the drainage channel 14 that is closer to the outside of the machine than the connection portion with the overflow channel 20 are connected by the outflow channel 32. The tap water that has flowed through the second branch passage 12B flows down from the inlet / outlet 7A into the dehydration tank 7, then flows out from the outer tank 6 through the outflow passage 32, flows through the drainage passage 14, and is discharged to the outside of the machine.

The two-tank washing machine 1 further includes a control unit 40 configured by a microcomputer or the like. A motor 5, a motor 8, a display operation unit 10, a water supply valve 13, and a drain valve 15 are electrically connected to the control unit 40. The control unit 40 executes the washing operation by controlling the operations of the motor 5, the water supply valve 13, and the drain valve 15. The washing operation includes a washing step of washing the laundry L1 in the washing tub 3 and a rinsing step of rinsing the laundry L1 in the washing tub 3. In the washing operation, the washing step and the rinsing step may be continuously executed, or only one of the washing step and the rinsing step may be executed. The control unit 40 executes a dehydration operation for dehydrating the laundry L2 in the dehydration tub 7 by controlling the operations of the motor 8 and the water supply valve 13.

In the case of the washing operation, the user operates the lever (not shown) described above in advance so that tap water from the faucet flows through the first branch passage 12A in the water supply channel 12. In the case of the dehydration operation, the user operates the lever in advance so that the tap water from the faucet flows through the second branch passage 12B in the water supply channel 12.

When the user who puts the laundry L1 into the washing tub 3 and closes the first door 9A and the lid 11 operates the display operation unit 10 to instruct the execution of the washing process of the washing operation, the control unit 40 first operates the display operation unit 10. Water is supplied to the washing tub 3 by opening the water supply valve 13 for a predetermined time with the drain valve 15 closed. The user may open the first door 9A and put the detergent into the washing tub 3 at the timing before or after the water supply.

When the water level in the washing tub 3 rises to a predetermined upper limit water level lower than the inlet 20B of the overflow channel 20, the control unit 40 rotates by operating the motor 5 after closing the water supply valve 13 and stopping the water supply. Rotate the wing 4. A part of the water in the washing tub 3 higher than the overflow port 3E is in a state of flowing into the overflow chamber 3G through the water passage hole 21C of the overflow port cover 21, and the internal space 3H of the washing tub 3 The water level in the flood chamber 3G and the water level in the overflow chamber 3G are in the same state. Due to the rotation of the rotary blade 4, the laundry L1 in the washing tub 3 is washed by being agitated or by decomposing dirt with a detergent. Finally, the control unit 40 drains the washing tub 3 by stopping the motor 5 and opening the drain valve 15. This completes the washing process.

In the rinsing process, the laundry L1 is rinsed with tap water stored in the washing tub 3 up to the above-mentioned upper limit water level, and the laundry L1 is constantly supplied with water from the water supply channel 12 into the washing tub 3. There is a "water injection rinse process" for rinsing. In the reservoir rinsing step, the control unit 40 first accumulates tap water in the washing tub 3 by opening the water supply valve 13 for a predetermined time with the drain valve 15 closed. The control unit 40 that has finished supplying water rotates the rotary blade 4 by operating the motor 5. As a result, the laundry Q in the washing tub 3 is sooted.

In the water injection rinsing step, the control unit 40 first supplies water to the washing tub 3 by opening the water supply valve 13 with the drain valve 15 closed. When the water level in the washing tub 3 rises above the lower end of the overflow port 3E, the water in the washing tub 3 flows into the overflow chamber 3G through the water passage hole 21C of the overflow port cover 21. The water level in the washing tub 3 and the water level in the overflow chamber 3G match. Then, even if the water level in the washing tub 3 rises to the inlet 20B of the overflow channel 20, the water supply valve 13 is still open, so that the water flowing into the overflow chamber 3G from the washing tub 3 is from the inlet 20B. By being taken into the overflow channel 20, it overflows to the outside of the washing tub 3. The water taken into the overflow channel 20 falls in the overflow channel 20 and is guided to the drainage channel 14. The water that has fallen in the overflow channel 20 and reached the drainage channel 14 is discharged from the drainage channel 14 to the outside of the machine. As described above, the height position of the inlet 20B is the height position when the overflow from the washing tub 3 is started, and is hereinafter referred to as "overflow height".

In this way, in the water injection rinsing step, the water in the washing tub 3 is constantly replaced by continuing the water supply to the washing tub 3 and the overflow from the overflow channel 20, and in this state, the control unit 40 controls the motor 5. Rinse the laundry L1 in the washing tub 3 by operating and rotating the rotary blade 4. In the water injection rinsing step, when the amount of laundry L1 is large, the user picks and slides the grip portion 23 of the slide member 22 in advance so that all the laundry L1 is immersed in the water in the washing tub 3. The member 22 is slid to the upper side Z1 and the inlet 20B of the overflow channel 20 is arranged at a high position. When the amount of laundry L1 is small, in order to save water, the user picks the grip portion 23 in advance, slides the slide member 22 to the lower side Z2, and arranges the inlet 20B of the overflow channel 20 at a low position. I will do it. In this embodiment, the height position of the inlet 20B, that is, the overflow height is set in three stages of the highest "high position", the lowest "low position", and the "middle position" between the high position and the low position. Can be adjusted. The overflow height may be adjustable stepwise in addition to the three steps, or may be adjustable steplessly.

In both the reservoir rinsing step and the water injection rinsing step, the user may open the first door 9A and put the softener into the washing tub 3 before, after, or during the water supply. The softener permeates the laundry L1. Finally, the control unit 40 stops the motor 5 and drains the washing tub 3.

When the user who puts the laundry L2 into the dehydration tub 7 and closes the second door 9B and the lid 31 operates the display operation unit 10 to instruct the execution of the dehydration operation, the control unit 40 operates the motor 8. By causing the dehydration tank 7, the dehydration tank 7 is rotated at a predetermined dehydration rotation speed. As a result, the laundry L2 in the dehydration tub 7 is dehydrated by the action of centrifugal force. The laundry L2 may be the laundry L1 which has just been transferred from the washing tub 3 to the dehydration tub 7 by the user after finishing the washing operation. Further, the control unit 40 may open the water supply valve 13 during the dehydration operation to supply water into the dehydration tank 7. As a result, the laundry L2 in the dehydration tub 7 is dehydrated and rinsed.

Next, the overflow port cover 21 and the slide member 22 will be described in detail in order. FIG. 2 is a perspective view of the overflow port cover 21 and the slide member 22 as viewed from the radial inner side R2. For example, each of the lower end, the upper end of the left edge, and the upper end of the right edge of the overflow port cover 21 is provided with a claw-shaped engaging portion 50 that engages with the circumferential wall 3A of the washing tub 3. A horizontally long grip portion 51 protruding inward R2 in the radial direction is provided at the upper end portion of the surface portion 21A of the overflow port cover 21. The user grips the grip portion 51 when attaching / detaching the overflow port cover 21 to / from the overflow port 3E. A vertically long recess 52 recessed to the radial outer side R1 is provided in the substantially lower half of the surface portion 21A. A filter (not shown) for capturing foreign matter such as lint removed from the laundry L1 during the washing operation is attached to the recess 52.

In the substantially upper half of the surface portion 21A, specifically, in the region between the grip portion 51 and the recess 52, a vertically long groove 53 recessed to the radial outer side R1 is provided. A slit 53B extending in the vertical direction Z and penetrating the groove bottom 53A in the radial direction is formed in the groove bottom 53A of the groove 53. The plurality of water passage holes 21C described above form a row arranged in the vertical direction Z by arranging them in the vertical direction Z. The rows of the water passage holes 21C are arranged one row on each of the left and right sides of the recesses 52 and the grooves 53 arranged in the vertical direction Z. Each water passage hole 21C is, for example, a horizontally long slit. The shape and size of all the water passage holes 21C may be the same, and as in this embodiment, the water passage holes 21C around the recess 52 are left and right of the water passage holes 21C around the groove 53. It may be narrow in the direction.

Marks M1 representing each of the above-mentioned "high position", "middle position", and "low position" are displayed on both sides of the groove 53 in the left-right direction in the substantially upper half of the surface portion 21A. In this embodiment, the mark M1 on the left side of the groove 53 is written in English, and the mark M1 on the right side of the groove 53 is written in Japanese. The back surface portion 21B of the overflow port cover 21 is provided with a stopper 21D that contacts the slide member 22 so that the slide member 22 cannot rise any further when the overflow height is at a high position (FIG. 11 described later). See).

FIG. 3 is a perspective view of the overflow port cover 21 and the slide member 22 as viewed from the radial outer side R1. At the upper end of the back surface portion 21B of the overflow port cover 21, a horizontally long recess 54 located on the back side of the above-mentioned grip portion 51 (see FIG. 2) and recessed in the radial inner direction R2 is provided. In the substantially lower half of the back surface portion 21B, a vertically long convex portion 55 located on the back side of the above-mentioned recess 52 (see FIG. 2) and projecting outward in the radial direction R1 is provided. The groove bottom 53A of the groove 53 described above is arranged in a substantially upper half of the back surface portion 21B, specifically, in the region between the concave portion 54 and the convex portion 55. In the back surface portion 21B, a plurality of reinforcing ribs 56 extending in the left-right direction are provided at positions avoiding the water passage holes 21C on both the left and right sides of the convex portions 55 arranged in the vertical direction Z and the groove bottom 53A.

The back surface portion 21B of the overflow port cover 21 is provided with a pair of left and right vertical ribs 57 projecting from the left edge and the right edge of the groove bottom 53A of the groove 53 in the radial direction, that is, into the overflow chamber 3G and parallel to each other. Be done. Of the pair of left and right vertical ribs 57, the vertical rib 57A located on the left side in FIG. 3 extends in the vertical direction Z along the left edge of the groove bottom 53A, and the vertical rib 57B located on the right side in FIG. 3 is the groove bottom. It extends in the vertical direction Z along the right edge of 53A. A guide groove 58 extending in the vertical direction Z is formed between the pair of left and right vertical ribs 57. The groove bottom 53A of the groove 53 also serves as the groove bottom of the guide groove 58.

In these vertical ribs 57, a plurality of horizontal ribs 59 arranged at equal intervals in the vertical direction Z are provided on the facing surfaces facing each other, that is, almost the entire right surface of the vertical ribs 57A and the left surface of the vertical ribs 57B. Each lateral rib 59 is arranged in the guide groove 58 and extends in the projecting direction of the vertical rib 57, that is, in the radial outer direction R1. The vertical cross section of each horizontal rib 59 provided on the right side of the left vertical rib 57A is formed in a semicircular shape bulging to the right, and the end face of the radial outer side R1 in each horizontal rib 59 is the diameter of the vertical rib 57A. It is flush with the end face of R1 outside the direction. The vertical cross section of each horizontal rib 59 provided on the left surface of the vertical rib 57B is formed in a semicircular shape bulging to the left, and the end surface of the radial outer R1 in each horizontal rib 59 is the radial outer side in the vertical rib 57A. It is flush with the end face of R1.

The groove bottom 53A of the groove 53 is provided with a pair of left and right guide ribs 60 projecting radially outward R1 from each of the left edge and the right edge of the slit 53B in the guide groove 58 and parallel to each other. Of the pair of left and right guide ribs 60, the left guide rib 60 extends in the vertical direction Z along the left edge of the slit 53B, and the right guide rib 60 extends in the vertical direction Z along the right edge of the slit 53B. The end of the radial outer R1 in each guide rib 60 is located radially inner R2 with respect to the end of the radial outer R1 in the vertical rib 57.

FIG. 4 is a perspective view of the slide member 22. The slide member 22 has a base portion 70, a connecting portion 71, a knob portion 23 and a holding portion 24 described above, and a positioning portion 72.

The base portion 70 includes a vertically long box-shaped main body portion 70A, a lower end portion 70B arranged below the main body portion 70A and extending in the left-right direction, and an intermediate portion 70C connecting the main body portion 70A and the lower end portion 70B. Has. The end face of the radial inner R2 in the main body 70A is the surface 70D of the main body 70A. On the end face of the radial inner R2 at the lower end 70B, one claw portion 70E protruding toward the radial inner R2 is provided at both ends in the left-right direction. The claw portion 70E when viewed from the left-right direction has a right-angled triangular shape that expands toward the inner side R2 in the radial direction toward the upper side Z1. The intermediate portion 70C is a columnar column of a vertically elongated rectangular parallelepiped, and is erected between the central portion in the left-right direction in the main body portion 70A and the central portion in the left-right direction in the lower end portion 70B.

The connecting portion 71 has a flat plate portion 71A arranged radially inside R2 of the surface portion 70D of the base portion 70, and a columnar portion 71B connecting the surface portion 70D and the flat plate portion 71A. The flat plate portion 71A is arranged in parallel with the surface portion 70D. On the surface of the radial inner side R2 of the flat plate portion 71A, a mark M2 indicating the slide direction of the slide member 22 is displayed. The columnar portion 71B is a vertically elongated rectangular parallelepiped columnar shape, and is erected between the central portion of the surface portion 70D in the left-right direction and the central portion of the flat plate portion 71A in the left-right direction.

The knob portion 23 is formed in a plate shape bent in the radial direction from the lower end of the flat plate portion 71A to the inner side R2. The holding portion 24 is connected to the upper end portion of the base portion 70, and in FIG. 4, is arranged so as to project radially outward R1 and to the right from the upper end portion of the base portion 70. The holding portion 24 is curved in a substantially C shape in a plan view, and the opening portion 24A is arranged toward the outer side R1 in the radial direction. The expansion / contraction portion 20A of the overflow channel 20 is fitted into the holding portion 24 from the opening portion 24A. The holding portion 24 sandwiches and holds the telescopic portion 20A. The inlet 20B of the telescopic portion 20A is arranged on the upper side Z1 of the holding portion 24.

FIG. 5 is a front view of the slide member 22 as seen from the radial inner side R2. A pair of left and right positioning portions 72 are provided, and one is arranged on each side of the intermediate portion 70C of the base portion 70 in the left-right direction. These positioning portions 72 are symmetrically configured with reference to the intermediate portion 70C. Of the pair of left and right positioning portions 72, the positioning portion 72A located on the right side in FIG. 5 is between the right end of the lower end surface of the main body portion 70A in the base portion 70 and the right end of the upper end surface of the lower end portion 70B in the base portion 70. Will be erected in. Of the pair of left and right positioning portions 72, the positioning portion 72B located on the left side in FIG. 5 is installed between the left end of the lower end surface of the main body portion 70A and the left end of the upper end surface of the lower end portion 70B.

Each of the positioning portions 72 is provided on both sides of the main body portion 72C curved so as to bulge away from the intermediate portion 70C of the base portion 70 in the left-right direction and one on each side of the main body portion 72C in the vertical direction Z. It is an integrally molded product made of resin that integrally has a support portion 72D curved so as to bulge in a direction approaching the intermediate portion 70C in the direction.

The main body portion 72C has a U-shaped curved plate shape and has a certain width in the radial direction R (see FIG. 4). The main body 72C of the right positioning portion 72A bulges to the right, and the main body 72C of the left positioning portion 72B bulges to the left. In each positioning portion 72, the main body portion 72C is supported by these support portions 72D by being erected between the support portions 72D on both sides in the vertical direction Z.

Each support portion 72D has a U-shaped curved plate shape opposite to that of the main body portion 72C. Each support 72D in the right positioning portion 72A bulges to the left, and each support 72D in the left positioning portion 72B bulges to the right. In the positioning portion 72A, the upper end of the support portion 72D of the Z1 above the main body portion 72C is connected to the right end of the lower end surface of the main body portion 70A of the base portion 70, and the lower end of the support portion 72D of the Z2 below the main body portion 72C. Is connected to the right end of the upper end surface of the lower end portion 70B of the base portion 70. In the positioning portion 72B, the upper end of the support portion 72D of Z1 above the main body portion 72C is connected to the left end of the lower end surface of the main body portion 70A, and the lower end of the support portion 72D of the lower Z2 below the main body portion 72C is the lower end portion. It is connected to the left end of the upper end surface of 70B.

With reference to FIG. 6 which is a right side view of the slide member 22 and FIG. 7 which is a left side view of the slide member 22, each positioning portion 72 is provided with a support portion 72D on the back surface of the overflow port cover 21. A notch 73 cut out from the portion 21B side, that is, the radial inner side R2 is provided. As a result, in each of the positioning portion 72A (see FIG. 6) and the positioning portion 72B (see FIG. 7), each of the support portions 72D of the upper Z1 and the lower Z2 is narrower than the main body portion 72C in the radial direction R. be. Further, the above-mentioned knob portion 23 is arranged between the respective positioning portions 72 and the holding portion 24 in the vertical direction Z, specifically, at a substantially central position in the vertical direction Z of the slide member 22.

FIG. 8 is a rear view of the overflow port cover 21 and the slide member 22 as seen from the radial outer side R1. FIG. 9 is a perspective view of a main part including the cross section taken along the line AA of FIG. In the slide member 22 supported by the overflow port cover 21, the knob portion 23 and the flat plate portion 71A of the connecting portion 71 are arranged in the groove 53 of the surface portion 21A of the overflow port cover 21, and the connecting portion 71 The columnar portion 71B is arranged in the slit 53B of the groove bottom 53A of the groove 53 (see FIG. 2 and FIG. 11 described later). Further, the holding portion 24, the base portion 70, and the positioning portion 72 are arranged on the back surface portion 21B of the overflow port cover 21. In the base portion 70, the portion of the radial inner side R2 and most of the left and right pair of positioning portions 72 are arranged in the guide groove 58 between the pair of left and right vertical ribs 57 in the back surface portion 21B. The pair of left and right claws 70E at the lower end 70B of the base 70 are arranged in the guide groove 58 with the slit 53B interposed therebetween.

FIG. 10 is an enlarged view of a main part surrounded by a two-dot chain line in FIG. The intermediate portion 70C of the base portion 70 is in a state of facing the slit 53B of the groove bottom 53A of the groove 53 and the guide ribs 60 provided on the left and right edges of the slit 53B from the radial outer side R1. Of the pair of left and right positioning portions 72, the positioning portion 72A located on the left side in FIG. 10 is adjacent to the left vertical rib 57A in the pair of left and right vertical ribs 57 from the right side, and is positioned on the right side in FIG. The portion 72B is adjacent to the right vertical rib 57B in the pair of left and right vertical ribs 57 from the left side.

In the positioning portion 72A on the left side, the main body portion 72C is in a state of bulging to the left side in the vertical rib 57A side, that is, in FIG. It is on the opposite side of the 57A side, that is, in a state of bulging to the right in FIG. 10 (see also FIG. 8). In the positioning portion 72B on the right side, the main body portion 72C is in a state of bulging to the right side in the vertical rib 57B side, that is, in FIG. It is on the opposite side of the 57B side, that is, in a state of bulging to the left in FIG. 10 (see also FIG. 8).

In FIG. 10, the main body 72C of the positioning portion 72A is in a state of being fitted between two horizontal ribs 59 adjacent to each other in the vertical direction Z among the plurality of horizontal ribs 59 in the vertical rib 57A, and the main body of the positioning portion 72B. The portion 72C is in a state of being fitted between two horizontal ribs 59 adjacent to each other in the vertical direction Z among the plurality of horizontal ribs 59 in the vertical ribs 57B (see also FIG. 8). As a result, the entire slide member 22 is in a state of being positioned in the vertical direction Z. In this state, the portion of the slide member 22 other than the positioning portion 72B is not in contact with the overflow port cover 21. However, when the overflow height is at a high position, the stopper 21D provided at the upper part of the groove bottom of the guide groove 58 of the back surface portion 21B of the overflow port cover 21 is a claw at the lower end portion 70B of the base portion 70 of the slide member 22. Contact the portion 70E from the upper side Z1 (see FIG. 8).

FIG. 11 is a cross-sectional view taken along the line AA of FIG. FIG. 12 is a schematic enlarged view of the main part of FIG. In each of the positioning portion 72A and the positioning portion 72B, the main body portion 72C when fitted between two lateral ribs 59 adjacent to each other in the vertical direction Z is viewed from the vertical direction Z, that is, the direction perpendicular to the paper surface of FIG. , Is arranged so as to overlap with substantially the entire area of the horizontal rib 59 in the radial direction R that coincides with or substantially coincides with the protruding direction of the vertical rib 57.

When the user slides the slide member 22 in the vertical direction Z in order to change the height position of the inlet 20B of the expansion / contraction portion 20A held by the holding portion 24 of the slide member 22 in the overflow channel 20, the slide member 22 Each positioning portion 72 gets over a plurality of horizontal ribs 59 provided on the corresponding vertical ribs 57. When the user stops sliding the slide member 22, the positioning portion 72 fits between two ribs adjacent to each other in the vertical direction Z among the plurality of horizontal ribs 59, so that the slide member 22 is positioned in the vertical direction Z. As a result, the height position of the entrance 20B after the change, that is, the above-mentioned overflow height is maintained.

The positioning portion 72 is curved so as to bulge toward the vertical rib 57 side and is curved so as to bulge toward the side opposite to the vertical rib 57 side and the main body portion 72C that actually fits between the two horizontal ribs 59. It integrally has a support portion 72D that supports the main body portion 72C. In such a positioning portion 72, both the main body portion 72C and the support portion 72D can be elastically deformed. Therefore, even if the distance between the lateral ribs 59 adjacent to each other in the vertical direction Z is large due to variations or the like, the main body portion 72C is elastically deformed so as to spread in the vertical direction Z, and these variations are absorbed. It fits tightly between the lateral ribs 59 of the (see also FIG. 8). Therefore, even if the buoyancy of water in the washing tub 3 or the restoring force generated by the expansion / contraction portion 20A of the overflow channel 20 acts on the slide member 22, the slide member 22 is firmly prevented from sliding. Can be positioned.

On the other hand, when the user picks the grip portion 23 and tries to slide the slide member 22, both the main body portion 72C and the support portion 72D are elastically deformed. As a result, the main body portion 72C can make a large stroke particularly in the left-right direction. Therefore, the main body portion 72C smoothly disengages from between the adjacent lateral ribs 59 and smoothly gets over the lateral ribs 59, so that the user can smoothly slide the slide member 22 with a constant light force. As a result of the above, it is possible to improve the certainty of positioning and the operability of the slide member 22.

Further, even if the user picks the knob portion 23 and slides the slide member 22 to either the upper side Z1 or the lower side Z2, the support portions 72D provided on both sides of the main body portion 72C in the vertical direction Z are elastically deformed. As a result, the main body portion 72C smoothly disengages from between the adjacent horizontal ribs 59 and smoothly gets over the horizontal ribs 59. Therefore, since the slide member 22 can be smoothly slid to both the upper side Z1 and the lower side Z2, the operability of the slide member 22 can be further improved.

Further, since the grip portion 23 is arranged at a well-balanced position between the positioning portion 72 and the holding portion 24 in the vertical direction Z, it is easy for the user to pick and move the grip portion 23. Therefore, the operability of the slide member 22 can be further improved.

Further, the main body 72C of the positioning portion 72 when sandwiched between the two lateral ribs 59 reaches the back surface portion 21B side of the overflow port cover 21, that is, the base end portion 59A of the lateral rib 59 when viewed from the vertical direction Z. Extend. Therefore, the main body portion 72C is arranged so as to overlap the entire area of the horizontal rib 59 in the protruding direction of the vertical rib 57 of the back surface portion 21B of the overflow port cover 21, that is, the radial direction R when viewed from the vertical direction Z. As a result, the main body portion 72C sandwiched between the two lateral ribs 59 comes into contact with the lateral ribs 59 in a wide range, so that the sliding member 22 is arbitrarily fitted between the lateral ribs 59. It can be positioned more firmly so that it does not slide. Therefore, the certainty of positioning of the slide member 22 can be further improved.

Further, the positioning portion 72 is provided with a notch 73 in which the support portion 72D is cut out from the back surface portion 21B side of the overflow port cover 21, so that the support portion 72D is larger than the main body portion 72C in the protruding direction of the vertical rib 57. Since the width is narrow, the rigidity of the root portion 72E protruding toward the back surface portion 21B from the support portion 72D in the main body portion 72C can be intentionally reduced. Although the rigidity of the root portion 72E can be reduced by adjusting the thickness of the positioning portion 72, it is better to form the notch 73 than to adjust the thickness of the positioning portion 72. The rigidity of the can be reduced accurately and surely.

When the user slides the slide member 22, the positioning portion 72 of the slide member 22 gets over the vertical rib 57 and the plurality of horizontal ribs 59 while bending them in the left-right direction, as shown in FIG. At this time, in each of the vertical ribs 57 and the horizontal ribs 59, the tip portions 57D and 59B on the side opposite to the base end portions 57C and 59A on the back surface portion 21B side are bent, and the pair of left and right vertical ribs 57 are on the tip portion 57D side. Open your legs. Then, the root portion 72E whose rigidity is set to be low in the main body portion 72C is pushed by the base end portion 57C of the vertical rib 57 and is oriented in the opposite direction to the tip portion 57D of the vertical rib 57 (see arrow Y in FIG. 12). Bend. As a result, the entire main body portion 72C is in a posture substantially parallel to the bent vertical ribs 57 and horizontal ribs 59.

Therefore, when the slide member 22 stops sliding and is sandwiched between the two lateral ribs 59, the main body portion 72C comes into contact with the lateral ribs 59 in a wide range, and thus between the lateral ribs 59. Since it fits tighter, the slide member 22 can be positioned more firmly so as not to slide arbitrarily. Therefore, the certainty of positioning of the slide member 22 can be further improved. The width W1 of the tip portion 72F of the main body portion 72C in the radial direction and the root portion 72E so that the entire main body portion 72C is in a posture substantially parallel to the bent vertical rib 57 and the horizontal rib 59. It is preferable that the width W2 in the radial direction R has a relationship of 1: 1 or more and 3: 2 or less.

The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims.

For example, in the above-described embodiment, the control unit 40 controls the opening and closing of the water supply valve 13 and executes each operation, but another configuration may be possible. Specifically, the water supply valve 13 may be manually opened and closed by the operation of the display operation unit 10 by the user, or the water supply valve 13 itself is omitted, and the faucet faucet (not shown) by the user. Water supply may be started or stopped directly by opening and closing. Further, the washing operation and the dehydration operation may be executed according to a schedule designated by a mechanical timer (not shown) provided in the two-tank washing machine 1.

1 Two-tank washing machine 3 Washing tub 3D Inner surface 3E Overflow port 3G Overflow chamber 7 Dehydration tank 14 Drainage channel 20 Overflow channel 20A Telescopic part 20B Inlet 21 Overflow port cover 21A Front part 21B Back side 22 Slide member 23 Grip part 24 Part 57 Vertical rib 59 Horizontal rib 72 Positioning part 72C Main body part 72D Support part 73 Notch L1 Laundry L2 Laundry R Radial direction Z Vertical direction Z2 Lower side

Claims (5)

A washing tub having an inner surface portion extending in the vertical direction for washing laundry, and an overflow port provided on the inner surface portion and an overflow chamber for receiving water passing through the overflow port from the inside of the washing tub. With a washing tub and
A dehydration tub that is placed side by side next to the washing tub to dehydrate the laundry,
An overflow port cover attached to the overflow port, the vertical rib protruding vertically from the back surface portion of the overflow port cover facing the overflow chamber to the overflow chamber, and the vertical rib provided on the vertical rib. An overflow port cover provided with a plurality of horizontal ribs extending in the protruding direction of the ribs and lining up in the vertical direction.
A drainage channel connected to a portion of the washing tub below the overflow port and draining water in the washing tub.
An overflow channel that is arranged in the overflow chamber and has a telescopic portion that can expand and contract in the vertical direction, and that takes in water from the overflow chamber from an inlet provided in the telescopic portion and guides it to the drainage channel.
Including a slide member slidably supported in the vertical direction by the overflow port cover.
The slide member is
A knob portion that is arranged on the front surface portion of the overflow port cover opposite to the back surface portion, is exposed in the washing tub, and is operated to slide the slide member.
A holding portion arranged in the overflow chamber to hold the telescopic portion, and a holding portion.
It has a positioning portion for positioning the slide member in the vertical direction by fitting between two horizontal ribs adjacent to each other in the vertical direction among the plurality of horizontal ribs.
The positioning portion is curved so as to bulge toward the vertical rib side and fits between the two horizontal ribs, and the main body is curved so as to bulge toward the side opposite to the vertical rib side. A two-tank washing machine with a support part that supports the part. The two-tank washing machine according to claim 1, wherein the support portions are provided on both sides of the main body portion in the vertical direction. The two-tank washing machine according to claim 1 or 2, wherein the grip portion is arranged between the positioning portion and the holding portion in the vertical direction. One of claims 1 to 3, wherein the main body portion when fitted between the two lateral ribs is arranged so as to overlap with substantially the entire area of the lateral ribs in the projecting direction when viewed from the vertical direction. Two-tank washing machine described in. The positioning portion is provided with a notch in which the support portion is cut out from the back surface portion side.
The two-tank washing machine according to claim 4, wherein the support portion is narrower than the main body portion in the protruding direction.

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