JP2020103718A - Washing machine - Google Patents

Abstract

To provide a washing machine capable of achieving improvement in maintainability regarding a drain filter.SOLUTION: A washing machine 1 includes: a drain passage 5 for discharging the water in a washing tub 13 arranged in a housing 2 to the outside of the housing 2; and a drain filter 6 attached to/detached from the drain passage 5. The drain filter 6 includes: a body 32 arranged in the drain passage 5 according to the mounting of the drain filter 6 with respect to the drain passage 5; and a comb part 33 supported by the body 32 in a movable manner. The comb part 33 advances in the body 32 according to the mounting of the drain filter 6 with respect to the drain passage 5, and retreats from the body 32 according to the detachment of the drain filter 6 from the drain passage 5. In a state where the drain filter 6 is mounted on the drain passage 5, the drain filter 6 captures a foreign substance contained in drain water flowing in the drain passage 5 by the comb part 33 in the body 32.SELECTED DRAWING: Figure 1

Description

The present invention relates to a washing machine.

The washing/drying machine described in Patent Document 1 below includes a filter unit that captures foreign matter contained in wastewater. The filter unit has a basket in which a large number of filtration holes are formed. The wastewater in the washer/dryer flows through the basket and passes through the filter hole. At that time, foreign matter contained in the wastewater is captured by the filter hole and accumulated in the basket.

JP, 2009-125537, A

In the filter unit described in Patent Document 1, long foreign matter such as lint and hair is easily entangled in the filtration hole of the basket, and it takes time and effort to remove the foreign matter entangled in the filtration hole during maintenance.

The present invention has been made under such a background, and an object thereof is to provide a washing machine capable of improving the maintainability of a drainage filter.

The present invention provides a casing, a washing tub arranged in the casing for accommodating laundry and storing water, a drainage channel for discharging water in the washing tub to the outside of the casing, and a drainage channel. A drainage filter that is attached to and detached from the drainage channel, wherein the drainage filter is attached to the drainage channel according to the attachment of the drainage channel to the drainage channel, and the drainage filter is movably supported by the main body. In a state where the drain filter is mounted in the drainage channel, and a comb portion that advances into the main body according to the mounting of the drainage channel and retracts from the inside of the main body in accordance with the removal of the drainage filter from the drainage channel. A washing machine including: a drainage filter that captures foreign matter contained in drainage flowing through the drainage channel in the main body by the comb portion.

Further, the present invention is characterized in that the washing machine further includes a guide portion that advances and retracts the comb portion according to attachment and detachment of the drainage filter to and from the drainage channel.

Further, in the present invention, the main body is formed with an insertion hole through which the advancing/retreating comb part is inserted, and the drainage filter has a seal part for filling a gap between the peripheral part of the insertion hole and the comb part in the main body. It is characterized by further having.

According to the present invention, when the drainage filter is attached to the drainage channel of the washing machine and the main body of the drainage filter is arranged in the drainage channel, the comb portion advances into the main body. The comb portion that has advanced into the main body captures foreign matter contained in the wastewater flowing through the drainage channel in the main body. As a result, the captured foreign matter entangles with the comb in the main body, but when the drain filter is removed from the drainage channel, the comb retracts from the main body, so the foreign matter is automatically removed from the comb and collected in the main body. You can Therefore, the user can smoothly take out the foreign matter from the main body of the drainage filter that has been detached from the drainage channel for maintenance, so that the maintainability of the drainage filter can be improved.

Further, according to the present invention, the guide portion allows the comb portion to smoothly advance and retreat in accordance with attachment/detachment of the drainage filter to/from the drainage channel.

Further, according to the present invention, in the drainage filter, the comb portion at the time of advancing and retracting is inserted into the insertion hole of the main body. Since the gap between the peripheral portion of the insertion hole in the main body and the comb portion is filled with the seal portion, it is possible to prevent foreign matter from entering this gap. Therefore, it is possible to save the trouble of removing the foreign matter that has entered this gap, so that the maintainability of the drainage filter can be further improved.

FIG. 1 is a schematic vertical sectional right side view of a washing machine according to an embodiment of the present invention. FIG. 2 is a perspective view of the filter unit arranged in the washing machine. FIG. 3 is an exploded perspective view of a drainage filter that constitutes the filter unit. FIG. 4 is a perspective view of the drainage filter. FIG. 5 is a plan view of the drainage filter. FIG. 6 is a sectional view taken along the line AA of FIG. FIG. 7 is a perspective view of the drainage filter. FIG. 8 is a cross-sectional view of the drainage filter. FIG. 9 is a perspective view of a receiving portion that constitutes the filter unit. FIG. 10 is a plan view of the receiving part and the drainage filter in the middle of attachment and detachment. 11 is a sectional view taken along the line BB of FIG. FIG. 12 is a plan view of the receiving portion and the attached drainage filter. FIG. 13 is a cross-sectional view taken along the line CC of FIG.

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a schematic vertical sectional right side view of a washing machine 1 according to an embodiment of the present invention. The direction orthogonal to the plane of FIG. 1 is called the left-right direction X of the washing machine 1, the left-right direction in FIG. 1 is called the front-back direction Y of the washing machine 1, and the up-down direction in FIG. 1 is called the up-down direction Z of the washing machine 1. In the left-right direction X, the back side in the plane of FIG. 1 is called the left side X1, and the front side in the plane of FIG. 1 is called the right side X2. In the front-rear direction Y, the left side in FIG. 1 is called the front side Y1, and the right side in FIG. 1 is called the rear side Y2. Of the vertical direction Z, the upper side is called the upper side Z1 and the lower side is called the lower side Z2.

The washing machine 1 of this embodiment is a so-called drum type washer/dryer. The washing machine 1 drains from the outer tub 3 through the housing 2, the outer tub 3 arranged in the housing 2, the water supply passage 4 and the drainage passage 5 connected to the outer tub 3, and the drainage passage 5. A drainage filter 6 for capturing foreign matter from the water to be collected, an inner tub 7 arranged in the outer tub 3 for containing the laundry L, a motor 8 for rotating the inner tub 7, and a laundry L in the inner tub 7. And a drying unit 9 for drying the.

The housing 2 is formed in a box shape. The front surface 2A of the housing 2 is, for example, a vertical surface. The front surface 2A is formed with an opening 2B that allows the inside and the outside of the housing 2 to communicate with each other. A door 10 that opens and closes the opening 2B is provided on the front surface 2A.

The outer tub 3 is elastically supported by the housing 2 via a damper (not shown). The outer tub 3 includes a cylindrical circumferential wall 3A centering on an axis J extending in the front-rear direction Y along the horizontal direction H, and a disc-shaped back wall 3B in which a hollow portion of the circumferential wall 3A is closed from the rear side Y2. , A ring-shaped front wall 3C connected to the front edge of the circumferential wall 3A. At the center of the back wall 3B, a through hole 3D is formed that penetrates the back wall 3B in the front-rear direction Y along the axis J. The front wall 3C includes an annular first portion 3E protruding from the front end edge of the circumferential wall 3A to the axis J side, a cylindrical second portion 3F protruding from the inner peripheral edge of the first portion 3E to the front side Y1, and The second portion 3F has an annular third portion 3G protruding from the front end edge toward the axis J side. Inside the third portion 3G, an inlet/outlet 3H communicating with the hollow portion of the circumferential wall 3A from the front side Y1 is formed. The doorway 3H faces and communicates with the opening 2B of the housing 2 from the rear side Y2.

The water supply passage 4 has one end (not shown) connected to a faucet (not shown) and the other end 4A connected to the back wall 3B of the outer tub 3. At the time of water supply, water from the faucet is supplied from the water supply passage 4 into the outer tub 3. In the outer tub 3, tap water or detergent water in which a detergent is dissolved is stored. A water supply valve 11 that is opened and closed to start and stop water supply is provided in the water supply path 4.

The drainage channel 5 is connected to the lower end of the outer tub 3, for example, the lower end of the first portion 3E of the front wall 3C. The water in the outer tub 3 is discharged from the drainage channel 5 to the outside of the machine, that is, outside the housing 2. A drain valve 12 that is opened and closed to start and stop drainage is provided in the middle of the drainage path 5.

The drainage filter 6 is provided in the drainage path 5 at an upstream portion closer to the outer tub 3 than the drainage valve 12. Since the front end of the drainage filter 6 is exposed to the front surface 2A of the housing 2, the user can hold the front end of the drainage filter 6 and attach/detach the drainage filter 6 to/from the housing 2. The drainage filter 6 will be described later in detail.

The inner tank 7 is slightly smaller than the outer tank 3. The outer tub 3 and the inner tub 7 form a washing tub 13. The inner tank 7 includes a cylindrical circumferential wall 7A arranged coaxially with the circumferential wall 3A of the outer tank 3, a disk-shaped rear wall 7B in which a hollow portion of the circumferential wall 7A is closed from the rear side Y2, and a circumferential wall. 7A has an annular wall 7C that extends from the front end edge toward the axis J side. A plurality of through holes 7D are formed in at least the circumferential wall 7A of the inner tub 7, and water in the outer tub 3 flows back and forth between the outer tub 3 and the inner tub 7 through the through holes 7D. Therefore, the water level in the outer tank 3 and the water level in the inner tank 7 match. A support shaft 14 extending along the axis J to the rear side Y2 is provided at the center of the back wall 7B of the inner tank 7. The rear end portion of the support shaft 14 passes through the through hole 3D of the rear wall 3B of the outer tub 3 and is arranged on the rear side Y2 of the rear wall 3B.

Inside the annular wall 7C, a doorway 7E communicating with the hollow portion of the circumferential wall 7A from the front side Y1 is formed. The entrance/exit 7E faces and communicates with the entrance/exit 3H of the outer tub 3 and the opening 2B of the housing 2 from the rear side Y2. The doorway 3H and the doorway 7E are collectively opened and closed by the door 10 together with the opening 2B. The user of the washing machine 1 puts the laundry L in and out of the inner tub 7 through the opened opening 2B, the entrance 3H, and the entrance 7E.

The motor 8 is arranged inside the housing 2 on the rear side Y2 of the back wall 3B of the outer tub 3. The motor 8 is connected to a support shaft 14 provided in the inner tank 7. The driving force generated by the motor 8 is transmitted to the support shaft 14, and the inner tank 7 rotates around the axis J together with the support shaft 14. A clutch mechanism (not shown) may be provided between the motor 8 and the support shaft 14 to transmit or disconnect the driving force of the motor 8 to the support shaft 14.

The drying unit 9 includes a circulation path 20, a blower unit 21, and a heating unit 22. The circulation path 20 is, for example, a flow path arranged in the upper side Z1 of the outer tank 3 in the housing 2. An outlet 20A is formed at one end of the circulation path 20, and a return port 20B is formed at one end of the circulation path 20. The outlet 20A is connected to a portion of the back wall 3B of the outer tub 3 that is higher than the upper limit water level in the outer tub 3, and communicates with the outer tub 3 from the rear side Y2. The return port 20B is connected to the upper end of the second portion 3F of the front wall 3C of the outer tank 3 and communicates with the inside of the outer tank 3 from the upper side Z1.

The blower unit 21 is a so-called blower, and includes a rotary blade 23 arranged in the circulation path 20 and a motor (not shown) for rotating the rotary blade 23. When the rotary vanes 23 rotate, the air in the washing tub 13, that is, the air in the outer tub 3 and the air in the inner tub 7 is taken out from the outlet 20A into the circulation path 20 as indicated by the thick dashed arrow, It is returned to the washing tub 13 through the return port 20B. As a result, the air in the washing tub 13 circulates so as to sequentially flow through the washing tub 13 and the circulation path 20.

The heating unit 22 is a heat exchanger in a heat pump or a general heater, and at least a part of the heating unit 22 is provided in the circulation path 20. The portion of the heating unit 22 provided in the circulation path 20 has a plurality of fin-shaped heat radiation units 22A, for example. When the heating unit 22 operates, the heat radiating unit 22A becomes high in temperature, so that the air flowing in the circulation path 20 is heated and becomes hot air when passing around the heat radiating unit 22A.

The washing machine 1 includes a control unit 24 configured as a microcomputer. The control unit 24 executes the washing operation by controlling the operations of the motor 8, the water supply valve 11, the drain valve 12, the blower unit 21 and the heating unit 22. The washing operation includes a washing process, a rinsing process, a dehydrating process, and a drying process.

Prior to the start of the washing process, the detergent is put into the inner tank 7. In the washing process, the control unit 24 opens the water supply valve 11 for a predetermined time to supply water to the outer tub 3 and the inner tub 7 with the drain valve 12 closed, and then causes the motor 8 to rotate the inner tub 7. As a result, the laundry L in the inner tub 7 is tapped and washed. In tapping, tumbling is repeated in which the laundry L is lifted to some extent and then falls naturally on the water surface. The stains are removed from the laundry L by the impact of tumbling and the detergent components contained in the water accumulated in the inner tub 7. When the control unit 24 opens the drain valve 12 and drains the water after a predetermined time has passed from the start of the tumbling, the washing process ends.

In the rinsing step, the control unit 24 opens the water supply valve 11 for a predetermined time to supply water to the outer tub 3 and the inner tub 7 with the drain valve 12 closed, and then causes the motor 8 to rotate the inner tub 7. Then, since the tumbling described above is repeated, the laundry L is rinsed with the tap water in the inner tub 7. When the control unit 24 drains water after a predetermined time has elapsed from the start of tumbling, the rinsing process ends. The rinsing process may be repeated multiple times. In the dehydration process, the control unit 24 rotates the inner tank 7 for dehydration with the drain valve 12 opened. The laundry L in the inner tub 7 is dehydrated by the centrifugal force generated by the dehydration rotation of the inner tub 7. The water leached from the laundry L due to the dehydration is discharged from the drainage channel 5 to the outside of the machine. The dehydration step may be performed not only after the rinsing step but also after the washing step.

In the drying process, the control unit 24 causes the air blowing unit 21 and the heating unit 22 to generate hot air, circulate the hot air between the inner tub 7 and the circulation path 20, and supply the hot air to the laundry L in the inner tub 7. Thereby, the laundry L is dried. The washing machine 1 may be a washing machine in which the drying unit 9 is omitted, and in the washing operation in that case, the drying step is omitted.

Next, the drainage filter 6 will be described in detail. The washing machine 1 includes a filter unit 30 having a drainage filter 6. FIG. 2 is a perspective view of the filter unit 30. The filter unit 30 also has a receiving portion 31 in addition to the drainage filter 6. The receiving portion 31 is a member that constitutes a part of the drainage channel 5 and to which the drainage filter 6 is attached and detached. In the following description, the respective directions of the drainage filter 6 and the receiving portion 31 are specified using the left-right direction X, the front-back direction Y, and the up-down direction Z described above. Each component of the filter unit 30 is made of resin unless otherwise specified below.

FIG. 3 is an exploded perspective view of the drainage filter 6. The drainage filter 6 has a main body 32 for containing the captured foreign matter, and a comb portion 33 for actually capturing the foreign matter from the wastewater flowing in the drainage channel 5. The main body 32 has a box-shaped accommodating portion 34 elongated in the front-rear direction Y, an operating portion 35 connected to the front end of the accommodating portion 34, an attachment 36 and a seal portion 37 accommodated in the accommodating portion 34. ..

The housing portion 34 includes a rectangular plate-shaped bottom wall 38 that is long in the front-rear direction Y, a rectangular plate-shaped right wall 39 that rises from the right end of the bottom wall 38, and a rectangular plate-shaped left wall that rises from the left end of the bottom wall 38. 40 and. The housing portion 34 includes a rectangular plate-shaped rear wall 41 that rises from the rear end of the bottom wall 38 and is installed between the rear ends of the right wall 39 and the left wall 40, and the bottom wall 38, the right wall 39, and the left wall 40. And a disc-shaped front wall 42 connected to each front end. A storage chamber 34</b>A that is long in the front-rear direction Y and is open to the upper side Z<b>1 is surrounded by the bottom wall 38, the right wall 39, the left wall 40, the rear wall 41, and the front wall 42.

At the rear end of the bottom wall 38, a substantially rectangular outlet 38A is formed which penetrates the bottom wall 38 in the up-down direction Z and communicates with the storage chamber 34A (see also FIG. 5, which will be described later). A plurality of circular insertion holes 38B penetrating the bottom wall 38 in the vertical direction Z are formed in a region of the bottom wall 38 on the front side Y1 of the outlet 38A (see FIG. 6 described later). These insertion holes 38B are regularly arranged in a matrix or staggered arrangement pattern.

A rib-shaped right lateral guide portion 39A that projects to the right side X2 and extends in the front-rear direction Y is provided in the entire upper end of the right wall 39. The right lateral guide portion 39A is formed such that the rear end portion thereof projects to the right side X2 by one step. At the rear end portion of the right wall 39, a substantially rectangular outlet 39B that penetrates the right wall 39 in the left-right direction X and communicates with the storage chamber 34A is formed. A pair of front and rear right vertical guide portions 39C and a pair of front and rear right engaging portions 39D are provided in a region on the right side of the right wall 39 on the front side Y1 of the outlet 39B.

Each right vertical guide portion 39C is a rib extending in the vertical direction Z from the lower end of the right wall 39 to the front of the right horizontal guide portion 39A. One right vertical guide portion 39C is provided at each of a front end portion of the right surface of the right wall 39 and a portion of the right surface of the right wall 39 adjacent to the outlet 39B. The right engagement portion 39D is formed in a claw shape protruding to the right side X2 at the lower end portion of the right surface of the right wall 39. The right engaging portion 39D of the front side Y1 is disposed adjacent to the lower end of the right vertical guide portion 39C of the front side Y1 from the rear side Y2, and the right engaging portion 39D of the rear side Y2 is the right vertical guide of the rear side Y2. It is disposed adjacent to the lower end of the portion 39C from the front side Y1.

The accommodating portion 34 is configured symmetrically. Therefore, a left lateral guide portion 40A having the same shape as the right lateral guide portion 39A is provided on the entire upper end of the left wall 40 so as to be symmetrical with the right lateral guide portion 39A. An outlet 40B having the same shape as the outlet 39B of the right wall 39 is formed at the rear end of the left wall 40. The outlet 40B communicates with the storage chamber 34A. On the left surface of the left wall 40, a pair of front and rear left vertical guide portions 40C having the same shape as the right vertical guide portion 39C are provided so as to be bilaterally symmetrical to the right vertical guide portion 39C. On the left surface of the left wall 40, a pair of front and rear left engaging portions 40D having the same shape as the right engaging portion 39D are provided so as to be symmetrical with the right engaging portion 39D. However, the left and right components such as the engaging portion in the accommodating portion 34 do not necessarily have to be symmetrical.

In the lower region of the rear wall 41, a substantially rectangular outlet 41A that penetrates the rear wall 41 in the front-rear direction Y is formed. The outlet 41A communicates with the accommodation chamber 34A. When viewed in the front-rear direction Y, the rear wall 41 is smaller than the front wall 42 and is arranged inside the contour of the front wall 42. An annular rib 42A extending along the circumferential direction is provided on the outer peripheral surface of the front wall 42. An annular packing 43 made of, for example, a rubber O-ring is fitted to a portion of the outer peripheral surface of the front wall 42 that is on the rear side Y2 of the rib 42A.

The operation portion 35 has a disk portion 35A arranged coaxially with the front wall 42, and a handle 35B protruding from the front surface of the disk portion 35A to the front side Y1. A lock groove 35C extending in the circumferential direction is formed on the outer peripheral surface of the disk portion 35A. There may be a plurality of lock grooves 35C, and in that case, they are provided side by side in the circumferential direction of the disk portion 35A. The operation portion 35 is rotatable relative to the storage portion 34 around a rotation axis (not shown) extending in the front-rear direction Y through the center of the disk portion 35A.

The attachment 36 has a rectangular plate-shaped bottom plate 36A that is long in the front-rear direction Y, a rectangular plate-shaped right plate 36B that rises from the right end of the bottom plate 36A, and a rectangular plate-shaped left plate 36C that rises from the left end of the bottom plate 36A. However, it is formed in a substantially U shape when viewed from the front-rear direction Y. The entire attachment 36 is housed in the housing chamber 34A of the housing portion 34. In this state, the bottom plate 36A overlaps the portion of the bottom wall 38 of the accommodating portion 34 on the front side Y1 of the outlet 38A from the upper side Z1. In the bottom plate 36A, circular insertion holes 36D that penetrate the bottom plate 36A in the vertical direction Z are formed in the same number as the insertion holes 38B of the bottom wall 38. The insertion hole 36D is slightly larger than the insertion hole 38B. The insertion holes 36D are regularly arranged in the same arrangement pattern as the insertion holes 38B. Therefore, when viewed in the vertical direction Z, the insertion hole 36D and the insertion hole 38B overlap one by one (see FIG. 6).

The seal portion 37 has a rectangular plate-shaped base 37A that is long in the front-rear direction Y, and a cylindrical portion 37B that projects from the upper surface of the base 37A to the upper side Z1. The cylindrical portions 37B are provided in the same number as the insertion holes 36D and the insertion holes 38B, and are regularly distributed in the same arrangement pattern as these insertion holes. The outer diameter of the cylindrical portion 37B is the same as the inner diameter of the insertion hole 36D. Inside each cylindrical portion 37B, a circular through hole 37C that penetrates both the cylindrical portion 37B and the base 37A in the vertical direction Z is formed. The inner diameter of the through hole 37C is the same as the inner diameter of the insertion hole 38B of the bottom wall 38 of the housing portion 34.

In the seal portion 37, the base 37A is arranged between the bottom wall 38 of the accommodating portion 34 and the bottom plate 36A of the attachment 36, and each cylindrical portion 37B is one from the lower side Z2 with respect to the insertion hole 36D of the bottom plate 36A. Each is fitted exactly. When viewed from the vertical direction Z, the insertion hole 36D, the insertion hole 38B, and the through hole 37C of the cylindrical portion 37B overlap one by one (see FIG. 6).

The comb portion 33 has a rectangular plate-shaped bottom plate 33A that is long in the front-rear direction Y, and right engaging portions 33B that are respectively provided at the front end and the rear end of the right end of the bottom plate 33A and project from the bottom plate 33A to the upper side Z1. The bottom plate 33A has a left engaging portion 33C that is provided at each of a front end portion and a rear end portion of the left end and that projects from the bottom plate 33A to the upper side Z1. The comb part 33 is configured symmetrically. In the bottom plate 33A, the left end portion and the right end portion are inclined toward the upper side Z1, and the central portion between the left end portion and the right end portion is flat. A plurality of elongated cylindrical pins 33D extending toward the upper side Z1 are formed on the upper surface of the central portion of the bottom plate 33A. The same number of the pins 33D as the through holes 37C of the seal portion 37 are provided, and the pins 33D are regularly arranged in the same arrangement pattern as the through holes 37C. These pins 33D form comb teeth in the comb portion 33. The outer diameter of the pin 33D is the same as the inner diameter of the through hole 37C.

A right guide hole 33BA, which is long in the vertical direction Z, is formed in each of the right engaging portions 33B so as to penetrate the right engaging portion 33B in the left-right direction X. A left guide hole 33CA that is long in the up-down direction Z is formed in each of the left engaging portions 33C by penetrating the left engaging portion 33C in the left-right direction X.

The comb portion 33 has a right side plate 33E extending from the space between the pair of front and rear right engaging portions 33B at the right end of the bottom plate 33A to the upper side Z1. The right side plate 33E is formed in the shape of a right triangle having an upper end that extends obliquely rearward and upward. A rib-shaped right lateral guide portion 33EA protruding to the right side X2 is provided in the entire upper end of the right side plate 33E.

The comb portion 33 has a left side plate 33F extending between the front and rear left engaging portions 33C at the left end of the bottom plate 33A to the upper side Z1. The left side plate 33F is formed in the same right triangle shape as the right side plate 33E. A rib-shaped left lateral guide portion 33FA protruding to the left side X1 is provided in the entire upper end of the left side plate 33F.

The comb portion 33 is arranged so as to cover the housing portion 34 of the main body 32 from the lower side Z2. In the comb portion 33, the bottom plate 33A faces the region of the bottom wall 38 of the housing portion 34 on the front side Y1 of the outlet 38A from the lower side Z2, and each right engaging portion 33B and the right side plate 33E include the right wall 39 of the housing portion 34. From the right side X2, and the left engaging portions 33C and the left side plate 33F face the left wall 40 of the housing portion 34 from the left side X1. In the right guide hole 33BA of each right engaging portion 33B, one right engaging portion 39D provided on the right surface of the right wall 39 is fitted from the left side X1. The left engaging portions 40D provided on the left surface of the left wall 40 are fitted into the left guide holes 33CA of the left engaging portions 33C one by one from the right side X2. Thereby, the comb part 33 is connected to the main body 32 and is supported by the main body 32.

The comb portion 33 moves in the vertical direction Z in a range in which the right engaging portion 39D can move in the vertical direction Z in the right guide hole 33BA, in other words, in a range in which the left engaging portion 40D can move in the vertical direction Z in the left guide hole 33CA. You can slide to. Thereby, the comb portion 33 can move relative to the main body 32. The right vertical guide portion 39C adjacent to the right engaging portion 39D on the front side Y1 from the front side Y1 and the right vertical guide portion 39C adjacent to the right engaging portion 39D on the rear side Y2 from the rear side Y2 move the comb portion 33. Be guided. By the left vertical guide portion 40C adjacent to the left engaging portion 40D (not shown) on the front side Y1 from the front side Y1, and the left vertical guide portion 40C adjacent to the left engaging portion 40D on the rear side Y2 from the rear side Y2. The movement of the comb portion 33 is guided.

FIG. 4 is a perspective view of the drainage filter 6. FIG. 5 is a plan view of the drainage filter 6. FIG. 6 is a sectional view taken along the line AA of FIG. The comb portion 33 shown in each of FIGS. 4, 5, and 6 is at the lowermost retracted position.

In the comb portion 33 in the retracted position, the bottom plate 33A is separated from the bottom wall 38 of the accommodation portion 34 of the main body 32 to the lower side Z2, and the right engagement portion of the accommodation portion 34 is provided at the upper end of the right guide hole 33BA of each right engagement portion 33B. 39D is located, and the left engagement portion 40D of the accommodation portion 34 is located at the upper end of the left guide hole 33CA of each left engagement portion 33C. Further, most of the right lateral guide portion 33EA and the left lateral guide portion 33FA are located lower than the bottom wall 38. In each pin 33D projecting from the bottom plate 33A of the comb portion 33 to the upper side Z1, the upper end portion thereof has an insertion hole 38B at a corresponding position on the bottom wall 38 and an insertion hole 36D at a corresponding position on the bottom plate 36A of the attachment 36. , The through hole 37C of the cylindrical portion 37B at a corresponding position in the seal portion 37 is inserted from the lower side Z2. However, the upper end portion of each pin 33D does not protrude from the through hole 37C to the upper side Z1, but is in a state of being retracted from the accommodating chamber 34A of the accommodating portion 34 to the lower side Z2.

The drainage filter 6 further includes biasing members 44 arranged one each in the right guide hole 33BA of each right engaging portion 33B and the left guide hole 33CA of each left engaging portion 33C (see FIG. 4). The biasing member 44 is a spring that can expand and contract in the longitudinal direction of each of the right guide hole 33BA and the left guide hole 33CA. The urging member 44 in the right guide hole 33BA is in a state of being compressed on the lower side Z2 than the right engaging portion 39D, and always urges the right engaging portion 33B to the lower side Z2. The biasing member 44 in the left guide hole 33CA is in a state of being compressed on the lower side Z2 than the left engaging portion 40D, and always biases the left engaging portion 33C to the lower side Z2 (not shown). As a result, the comb portion 33 is constantly biased by the biasing member 44 toward the retracted position. In addition, in each drawing other than FIG. 4, illustration of the biasing member 44 is omitted.

When the comb portion 33 is raised from the retracted position against the urging force of the urging member 44, the comb portion 33 is arranged at the uppermost advanced position. That is, the comb portion 33 can move back and forth between the advanced position and the retracted position. FIG. 7 is a perspective view of the drainage filter 6 when the comb portion 33 is at the advanced position. FIG. 8 is a cross-sectional view of the drainage filter 6 when the comb portion 33 is in the advanced position, cut at the same cutting position as in FIG.

In the comb portion 33 in the advanced position, the bottom plate 33A contacts the bottom wall 38 of the housing portion 34 of the main body 32 from the lower side Z2, and the right engaging portion of the housing portion 34 is engaged with the lower end of the right guide hole 33BA of each right engaging portion 33B. The portion 39D is located, and the left engagement portion 40D of the accommodation portion 34 is located at the lower end of the left guide hole 33CA of each left engagement portion 33C. Further, the entire right side plate 33E is located higher than the bottom wall 38 and faces the right wall 39 of the accommodating portion 34 from the right side X2. Further, the entire left side plate 33F is at a position higher than the bottom wall 38 and faces the left wall 40 of the accommodating portion 34 from the left side X1. In each pin 33D protruding from the bottom plate 33A of the comb portion 33 to the upper side Z1, most of the pin 33D including the upper end portion is inserted into the through hole 38B at the corresponding position on the bottom wall 38 and the cylindrical portion at the corresponding position on the seal portion 37. It is in a state of protruding through the through hole 37C of 37B from the through hole 37C to the upper side Z1 and advancing into the accommodation chamber 34A of the accommodation portion 34.

FIG. 9 is a perspective view of the receiving portion 31. The receiving portion 31 includes a case 51 formed in a box shape elongated in the front-rear direction Y, a cylindrical portion 52 connected to a front end of the case 51, a rear end portion of the case 51, and a cylindrical portion 52. It has a bracket 53 protruding inward and a vertical plate 54 connected to the front end of the cylindrical portion 52.

The case 51 is configured to be inclined with respect to the horizontal direction H so as to descend toward the rear side Y2. Therefore, the case 51 includes a bottom wall 55 that is inclined so as to descend toward the rear side Y2, and a rectangular plate-shaped ceiling that is arranged on the upper side Z1 of the bottom wall 55 and that is inclined toward the rear lower side similarly to the bottom wall 55. And a wall 56. The case 51 includes a rectangular plate-shaped right wall 57 that is installed between the right ends of the bottom wall 55 and the top wall 56, and a rectangular plate-shaped left wall 58 that is installed between the left ends of the bottom wall 55 and the top wall 56. It has a bottom wall 55, a top wall 56, a right wall 57, and a rear wall 59 connected to the respective rear ends of the left wall 58. The inner space 51A of the case 51 is closed from both sides in the vertical direction Z by the bottom wall 55 and the top wall 56, closed from both sides in the left-right direction X by the right wall 57 and the left wall 58, and is closed by the rear wall 59. It is blocked from the rear side Y2. The inner space 51A is inclined so as to descend toward the rear side Y2.

The bottom wall 55 is curved in a U shape when viewed from the front-rear direction Y. In the middle of the ceiling wall 56, a cylindrical rib 56A protruding to the upper side Z1 is provided. A portion surrounded by the ribs 56A is an inlet 56B, which penetrates the ceiling wall 56 and communicates with the internal space 51A of the case 51 from the upper side Z1.

On the left surface of the right wall 57 facing the internal space 51A of the case 51, an upper right guide groove 57A extending linearly while being inclined along the ceiling wall 56 at an upper end portion of the left surface, and a lower side Z2 below the upper right guide groove 57A. A lower right guide groove 57B extending to the rear side Y2 is formed. The upper right guide groove 57A extends from the front end portion of the right wall 57 to the front side of the rear wall 59, and the front end of the upper right guide groove 57A is opened to the front side Y1.

On the left surface of the right wall 57, a lower right rib 57C that partitions the lower right guide groove 57B from the lower side Z2 and an upper right rib 57D that partitions the lower right guide groove 57B from the upper side Z1 are provided. The lower right rib 57C extends substantially horizontally and approaches the upper right guide groove 57A toward the rear side Y2. The upper right rib 57D gradually descends toward the rear Y2 and approaches the lower right rib 57C, and a rear portion 57DB that extends from the rear end of the front portion 57DA to the rear Y2 in parallel with the lower right rib 57C. Have and. Therefore, the groove width of the lower right guide groove 57B in the vertical direction Z becomes narrower toward the rear side Y2 in the region between the front portion 57DA and the lower right rib 57C, and between the rear portion 57DB and the lower right rib 57C. Is constant in the area of. The rear end of the rear portion 57DB is located on the front side Y1 with respect to the rear end of the lower right rib 57C. The front end of the lower right guide groove 57B is opened to the front side Y1.

On the right surface of the left wall 58 facing the internal space 51A of the case 51, an upper left guide groove 58A extending linearly while being inclined along the ceiling wall 56 at an upper end portion of the right surface, and a lower side Z2 below the upper left guide groove 58A. And a lower left guide groove 58B extending to the rear side Y2 is formed (see FIG. 11 described later). The upper left guide groove 58A is configured symmetrically with the upper right guide groove 57A. The upper left guide groove 58A extends from the front end portion of the left wall 58 to the front of the rear wall 59, and the front end of the upper left guide groove 58A is opened to the front side Y1.

The lower left guide groove 58B is configured symmetrically with the lower right guide groove 57B. On the right surface of the left wall 58, a lower left rib 58C that partitions the lower left guide groove 58B from the lower side Z2 and an upper left rib 58D that partitions the lower left guide groove 58B from the upper side Z1 are provided (see FIG. 11). The lower left rib 58C extends substantially horizontally and approaches the upper left guide groove 58A toward the rear side Y2. The upper left rib 58D has a front portion 58DA which gradually descends toward the rear side Y2 and approaches the lower left rib 58C, and a rear portion 58DB which extends from the rear end of the front portion 58DA to the rear side Y2 in parallel with the lower left rib 58C. Have. Therefore, the groove width of the lower left guide groove 58B in the vertical direction Z becomes narrower toward the rear side Y2 in the region between the front portion 58DA and the lower left rib 58C, and in the region between the rear portion 58DB and the lower left rib 58C. Be constant. The rear end of the rear portion 58DB is located on the front side Y1 with respect to the rear end of the lower left rib 58C. The front end of the lower left guide groove 58B is opened to the front side Y1.

At the rear end of the left wall 58, a cylindrical rib 58E protruding to the left side X1 is provided. A portion surrounded by the rib 58E is an outlet 58F, which penetrates the left wall 58 and communicates with the rear end portion of the internal space 51A of the case 51 from the left side X1 (see FIG. 10 described later). The inlet 56B of the top wall 56 and the outlet 58F of the left wall 58 are connected in the middle of the drainage channel 5 (see FIGS. 9 and 10). As a result, the case 51 is incorporated in the drainage channel 5, and the internal space 51A of the case 51 constitutes a part of the drainage channel 5.

The inner space of the cylindrical portion 52 communicates with the inner space 51A of the case 51 from the front side Y1 as a circular inlet/outlet 52A. In the cylindrical portion 52, an annular step portion 52B is provided in the middle of the inner peripheral surface that defines the entrance 52A. As a result, on the inner peripheral surface of the cylindrical portion 52, the front region on the front side Y1 of the step portion 52B has a larger diameter than the rear region of the rear side Y2 of the step portion 52B. A lock claw 52C extending in the circumferential direction is provided in the front region of the inner peripheral surface of the cylindrical portion 52. A plurality of lock claws 52C may be provided, and in that case, they are arranged side by side in the circumferential direction of the inner peripheral surface of the cylindrical portion 52.

A through hole 53A is formed in each bracket 53. By inserting a screw (not shown) into the through hole 53A and assembling it into the housing 2, the entire receiving portion 31 is fixed to the housing 2. The receiving portion 31 may be regarded as a part of the housing 2.

The vertical plate 54 is formed in a substantially rectangular frame shape when viewed from the front side Y1. The entrance/exit 52A of the cylindrical portion 52 is exposed from the inside of the vertical plate 54 to the front side Y1. The front ends of the upper right guide groove 57A, the lower right guide groove 57B, the upper left guide groove 58A, and the lower left guide groove 58B in the case 51 are opened from the entrance 52A to the front side Y1. The vertical plate 54 may form a part of the front surface 2A (see FIG. 1) of the housing 2. The entrance/exit 52A and these guide grooves face the front side Y1 from the front surface 2A of the housing 2. The lower portion of the vertical plate 54 constitutes a part of the bracket 53 on the front side Y1.

Next, attachment/detachment of the drainage filter 6 to/from the receiving portion 31 will be described. FIG. 10 is a plan view of the receiving portion 31 and the drainage filter 6 which is being attached and detached. 11 is a sectional view taken along the line BB of FIG. FIG. 12 is a plan view of the receiving portion 31 and the installed drainage filter 6. FIG. 13 is a cross-sectional view taken along the line CC of FIG.

When mounting the drainage filter 6, referring to FIG. 11, the user first grips the handle 35B of the operating portion 35 of the main body 32 of the drainage filter 6, and the front side Y1 of the entrance/exit 52A of the receiving portion 31 of the main body 32. Move to. At this time, the comb portion 33 of the drainage filter 6 is in the retracted position (see FIG. 4). Then, the user moves the main body 32 to the rear side Y2 and inserts the main body 32 into the doorway 52A from the accommodation section 34 side.

Then, the accommodation portion 34 is accommodated in the internal space 51A of the case 51 of the receiving portion 31 through the entrance 52A. Further, the right lateral guide portion 39A of the accommodating portion 34 is received by the front end of the upper right guide groove 57A in the case 51, and advances to the rear side Y2 in the upper right guide groove 57A (see FIGS. 4 and 9). Further, the left lateral guide portion 40A of the housing portion 34 is received by the front end of the upper left guide groove 58A in the case 51, and advances to the rear side Y2 in the upper left guide groove 58A. Further, the right lateral guide portion 33EA of the comb portion 33 of the drainage filter 6 is received by the front end of the lower right guide groove 57B in the case 51, and advances to the rear side Y2 in the lower right guide groove 57B (FIGS. 4 and 9). reference). Further, the left lateral guide portion 33FA of the comb portion 33 is received by the front end of the lower left guide groove 58B in the case 51, and advances to the rear side Y2 in the lower left guide groove 58B.

As described above, the lower right rib 57C (see FIG. 9) that partitions the lower right guide groove 57B from the lower side Z2 approaches the upper right guide groove 57A as it goes toward the rear side Y2. Further, the lower left rib 58C that divides the lower left guide groove 58B from the lower side Z2 approaches the upper left guide groove 58A as it goes toward the rear side Y2. Therefore, as the housing portion 34 is housed in the internal space 51A, the right lateral guide portion 33EA and the left lateral guide portion 33FA of the comb portion 33 are pushed up from the lower side Z2 by the lower right rib 57C and the lower left rib 58C, respectively. As a result, the comb portion 33 moves up from the retracted position toward the advanced position. As described above, the lower right rib 57C and the lower left rib 58C function as an example of a guide portion that advances the comb portion 33 to the advanced position side according to the attachment of the drainage filter 6 to the receiving portion 31. The lower right rib 57C and the lower left rib 58C allow the comb portion 33 to smoothly advance.

As shown in FIG. 13, when the packing 43 of the front wall 42 of the accommodating portion 34 comes into contact with the step 52B at the entrance 52A of the accommodating portion 34 from the front side Y1, the entire accommodating portion 34 is accommodated in the internal space 51A. Thus, the mounting of the drainage filter 6 on the receiving portion 31 is completed. In this state, the inner space 51A is closed from the front side Y1 by the front wall 42, and the gap between the front wall 42 and the step portion 52B is closed by the packing 43. The user rotates the operation unit 35 by gripping and twisting the handle 35B of the operation unit 35. As a result, when the lock claw 52C (see FIG. 9) in the entrance 52A enters the lock groove 35C (see FIG. 4) of the disk portion 35A of the operating portion 35, the operating portion 35 cannot move in the front-rear direction Y. Is locked in the state that it is attached to the receiving portion 31.

In the drainage filter 6 mounted on the receiving portion 31, the housing portion 34 of the main body 32 is arranged in the internal space 51A of the case 51 of the receiving portion 31, that is, the drainage path 5, and the comb portion 33 is arranged at the housing position. That is, the comb portion 33 moves to the accommodation position in accordance with the attachment of the drainage filter 6 to the receiving portion 31, and the pins 33D of the comb portion 33 advance into the accommodation chamber 34A in the accommodation portion 34 of the main body 32 (see FIG. 8). ). The accommodating portion 34 in the drainage path 5 is arranged to be inclined with respect to the horizontal direction H so as to descend toward the rear side Y2 according to the inclination of the case 51.

When the washing operation is executed in the washing machine 1 with the drainage filter 6 attached to the receiving portion 31, and the drainage valve 12 is opened at that time, the drainage flowing from the washing tub 13 into the drainage channel 5 is transferred to the ceiling of the case 51. From the inlet 56B of the wall 56, it flows down into the storage chamber 34A of the storage portion 34 in the internal space 51A of the case 51. The drainage flows down to the rear side Y2 in the accommodation chamber 34A, flows out from any of the outlet 38A, the outlet 39B, the outlet 40B, and the outlet 41A in the accommodation portion 34, and passes through the outlet 58F of the left wall 58 of the case 51 and the drainage path 5. Toward the downstream end of. The drainage flowing to the rear side Y2 in the storage chamber 34A passes around any of the pins 33D in the comb portion 33 at the advanced position, and thus the foreign matter F contained in the drainage is caught by the pins 33D (see FIG. 8). ). As a result, the captured foreign substance F is entangled with the pin 33D in the main body 32.

In the drainage filter 6 attached to the receiving portion 31, the handle 35B is exposed from the front surface 2A of the housing 2. When detaching the drainage filter 6, the user first grips the handle 35B and rotates the operation unit 35 in the direction opposite to that at the time of mounting. As a result, the lock claw 52C (see FIG. 9) in the entrance/exit 52A is disengaged from the lock groove 35C (see FIG. 4) of the disk portion 35A of the operating portion 35, so that the drainage filter 6 is unlocked and the operating portion 35 moves forward and backward. You can move in direction Y. Next, the user moves the main body 32 to the front side Y1 by grasping the handle 35B and pulling it toward the front side Y1.

Then, as shown in FIG. 11, the accommodating portion 34 of the main body 32 moves from the internal space 51A of the case 51 of the receiving portion 31 to the front side Y1 and is pulled out from the entrance 52A. Further, the right lateral guide portion 39A of the housing portion 34 moves to the front side Y1 and comes out of the upper right guide groove 57A in the case 51 (see FIGS. 4 and 9). Further, the left lateral guide portion 40A of the housing portion 34 moves to the front side Y1 and comes off from the upper left guide groove 58A in the case 51. Further, the right lateral guide portion 33EA of the comb portion 33 of the drainage filter 6 moves to the front side Y1 in the lower right guide groove 57B of the case 51 (see FIGS. 4 and 9). Further, the left lateral guide portion 33FA of the comb portion 33 moves to the front side Y1 in the lower left guide groove 58B of the case 51.

The rear portion 57DB of the upper right rib 57D that divides the lower right guide groove 57B from the upper side Z1 moves away from the upper right guide groove 57A as it goes toward the front side Y1 (see FIG. 9). The rear portion 58DB of the upper left rib 58D that divides the lower left guide groove 58B from the upper side Z1 moves away from the upper left guide groove 58A as it goes toward the front side Y1. Therefore, as the accommodating portion 34 of the main body 32 is pulled out to the front side Y1 from the internal space 51A and the entrance 52A of the case 51 of the receiving portion 31, the right lateral guide portion 33EA and the left lateral guide portion 33FA of the comb portion 33 move to the upper right. The rear portion 57DB of the rib 57D and the rear portion 58DB of the upper left rib 58D are pressed down from the upper side Z1. As a result, the comb portion 33 descends from the accommodation position to the retracted position. Thus, the upper right rib 57D and the upper left rib 58D function as an example of a guide portion that retracts the comb portion 33 to the retracted position side in accordance with the removal of the drainage filter 6 from the receiving portion 31. The comb portion 33 can be smoothly retracted by the upper right rib 57D and the upper left rib 58D.

When the entire accommodating portion 34 of the main body 32 is pulled out to the front side Y1 of the inlet/outlet 52A of the receiving portion 31, the detachment of the drainage filter 6 from the receiving portion 31 is completed. At this time, the comb portion 33 of the drainage filter 6 is arranged at the retracted position. That is, in accordance with the removal of the drainage filter 6 from the receiving portion 31, the comb portion 33 moves to the retracted position, and each pin 33D of the comb portion 33 retracts and is hidden from the accommodation chamber 34A in the accommodation portion 34 of the main body 32. (See Figure 6). At this time, since the above-mentioned biasing member 44 constantly biases the comb portion 33 toward the retracted position, each pin 33D is assisted so as to be completely hidden from the accommodation chamber 34A.

As described above, when the drain filter 6 is detached from the receiving portion 31, the comb portion 33 retreats from the accommodation chamber 34A, so that the foreign matter F entangled with the pin 33D of the comb portion 33 is automatically removed from the pin 33D and the accommodation chamber 34A. (See FIG. 6). Therefore, the user can smoothly take out the foreign matter F from the storage chamber 34A of the drainage filter 6 that has been removed for maintenance, and thus the maintenance of the drainage filter 6 becomes easy. Further, since there is no small hole in the accommodating portion 34 where long foreign matter F such as lint or hair is easily entangled, the user does not need to remove the foreign matter F entangled in the accommodating portion 34. Therefore, the maintainability of the drainage filter 6 can be improved.

In the comb part 33 that moves back and forth between the advanced position and the retracted position, the pins 33D of the comb part 33 are inserted into the insertion holes 36D of the bottom plate 36A of the attachment 36. The gap between the pin 33D and the peripheral edge of the insertion hole 36D in the bottom plate 36A is filled with the cylindrical portion 37B of the seal portion 37 (see FIGS. 6 and 8). Therefore, it is possible to prevent the foreign matter F from entering the gap. Therefore, it is possible to save the trouble of removing the foreign matter F that has entered this gap, and therefore the maintainability of the drainage filter 6 can be further improved. At least one of the seal portion 37 and the attachment 36 may be integrally formed with the housing portion 34.

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 drum type washing machine 1 in the above-described embodiment, the inner tub 7 may be arranged so that the axis J is inclined in the horizontal direction H. Further, the washing machine 1 may be a vertical washer/dryer in which the axis J extends vertically.

1 Washing Machine 2 Housing 5 Drainage Channel 6 Drainage Filter 13 Washing Tank 32 Main Body 33 Comb 36D Insertion Hole 37 Sealing Part 57C Lower Right Rib 57D Upper Right Rib 58C Lower Left Rib 58D Upper Left Rib F Foreign Material L Laundry

Claims (3)

A housing,
A laundry tub that is disposed in the housing, stores laundry, and stores water;
A drainage channel for discharging the water in the washing tub to the outside of the casing;
A drainage filter that is attached to and detached from the drainage channel,
A body arranged in the drainage channel according to the mounting of the drainage filter to the drainage channel,
A comb portion that is movably supported by the main body, advances into the main body in accordance with the attachment of the drainage filter to the drainage channel, and retracts from the main body in response to the removal of the drainage filter from the drainage channel. Have,
A washing machine including: a drainage filter that captures foreign matter contained in drainage flowing through the drainage channel in the main body by the comb section in a state where the drainage filter is attached to the drainage channel. The washing machine according to claim 1, further comprising a guide portion that advances and retracts the comb portion according to attachment and detachment of the drainage filter to and from the drainage channel. The main body is formed with an insertion hole through which the advancing and retracting comb portion is inserted,
The washing machine according to claim 1 or 2, wherein the drainage filter further includes a seal portion that fills a gap between the comb portion and the peripheral portion of the insertion hole in the main body.

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