WO2019128901A1

WO2019128901A1 - Washing machine

Info

Publication number: WO2019128901A1
Application number: PCT/CN2018/122980
Authority: WO
Inventors: 樋口秀一
Original assignee: 青岛海尔洗衣机有限公司; Aqua株式会社
Priority date: 2017-12-26
Filing date: 2018-12-24
Publication date: 2019-07-04
Also published as: JP2019115391A; CN111511973B; CN111511973A; JP7126152B2

Abstract

A washing machine. The washing machine can effectively collect lint in a wash tub by means of a lint filter even when the water level or the strength of a water flow in the wash tub changes. The washing machine (1) comprises: a wash tub (4); a first support shaft (7), disposed in the wash tub (4) and extending in a vertical direction (z); and a lint filter (9), supported by the first support shaft (7) in a way that the lint filter can rotate about the first support shaft (7) and move up and down along the first support shaft (7). The lint filter (9) comprises: a lint entry (23A); a fin portion (30E), disposed at a side of the first support shaft (7) opposite to the entry (23A) for receiving the water flow in the wash tub (4) so as to rotate the lint filter (9); and a floating plate portion (28) for creating the buoyancy.

Description

washing machine

Technical field

The present invention relates to a washing machine.

Background technique

The washing machine described in Patent Document 1 includes a washing tub that can store washing water, a pump casing that is disposed at a bottom of the washing tub, a pulsator that is disposed in a recess of the pump casing, and a suction flow path and a discharge flow path. Stand up along the side of the wash tub. The lower end of the suction flow path is connected to a space that communicates with the recess of the pump casing from the lower side. The lower end of the discharge flow path is connected to the recess of the pump housing. When the washing starts, the pulsator rotates. The washing water in the washing tub is sucked into the suction flow path through the centrifugal pump effect of the centrifugal blade on the back side of the pulsator, and passes through the space and the recess enters the discharge flow path from the upper end of the discharge flow path The outlet is discharged into the washing tub. A cable dust filter is assembled at the discharge port. The lint filter traps the lint contained in the wash water discharged from the discharge port.

In general, the swarf filter is fixed to the upper portion of the washing tub like the washing machine described in Patent Document 1. In this case, when the water level in the washing tub is lowered or the strength of the water flow in the washing tub is weakened, the washing water in the washing tub does not reach the wire dust filter, and thus the wire dust filter is difficult to effectively collect from the washing water. Wire shavings.

Prior art literature

Patent literature

Patent Document 1: Japanese Laid-Open Patent Publication No. 2000-140477

Summary of the invention

Problems to be solved by the invention

The present invention is an invention completed under such a background, and an object of the invention is to provide a washing machine capable of effectively trapping a line in a washing tub through a wire filter even if a water level and a water flow intensity in the washing tub are changed. Chips.

Solution to solve the problem

The washing machine of the present invention comprises: a washing tub for accommodating laundry and storing water; a support shaft disposed in the washing tub and extending in an up-and-down direction; and a lint filter to be rotatable around the support shaft and capable of The state in which the support shaft is raised and lowered is supported by the support shaft to trap the wire in the washing tub, the wire filter has a wire take-up port, and the fin portion is disposed opposite to the support The opposite side of the inlet port of the shaft receives the flow of water in the washing tub to rotate the chip filter; and the floating plate portion generates buoyancy.

Further, the washing machine of the present invention is characterized in that it further includes a restricting portion that limits a range of rotation of the lint filter.

Further, the present invention is characterized in that the lower end of the support shaft is disposed to be away from the bottom wall of the washing tub to the upper side, and the washing machine further includes another support shaft to be movable in the up-down direction from the bottom wall The support is elastically supported and supported from the lower side.

Effect of the invention

According to the invention, the lint filter supported by the support shaft extending in the up-and-down direction in the washing tub is lifted and lowered along the support shaft by the buoyancy generated by the floating plate portion. Thereby, the wire ingestion port in the wire filter is always disposed at a water level in the washing tub or a position lower than the water level, so that the wire dust contained in the water in the washing tub can be effectively captured. Further, the fin portion receives the flow of water in the washing tub, and the swarf filter rotates around the support shaft so as to flow toward the water in the washing tub with respect to the inlet port on the opposite side of the fin portion of the support shaft. Thereby, since the intake port is always disposed at a position where the water flow in the washing tub flows, the wire dust contained in the water flow can be efficiently captured. Therefore, even if the water level in the washing tub or the intensity of the water flow changes, the lint in the washing tub can be efficiently trapped by the lint filter.

Further, according to the present invention, the rotation range of the swarf filter is restricted so that the intake opening does not deviate from the position at which the swarf can be effectively captured, so that the line inside the washing tub can be more effectively captured by the swarf filter Chips.

Further, according to the present invention, the support shaft supports the wire filter in a state where the lower end thereof is away from the bottom wall of the washing tub to the upper side, and the other support shaft supports the wire filter from the lower side. Since the other support shaft is elastically supported by the bottom wall of the washing tub in such a manner as to be movable in the up-down direction, when the other support axially lower side is deviated, the support shaft and the other support shaft The space between them expands in the up and down direction. Assembled in such a manner that when the other of the support shafts is returned to the original position on the upper side after the swarf filter is disposed in the space, the swarf filter is supported by both the support shaft and the other support shaft . Therefore, the assembly of the wire filter is improved.

DRAWINGS

Fig. 1 is a longitudinal sectional view showing a washing machine in accordance with an embodiment of the present invention.

Figure 2 is an enlarged view of the lint filter of Figure 1.

Fig. 3 is a side view of the wire filter viewed from the axial side of the washing tub.

Figure 4 is a top plan view of the chip filter.

Figure 5 is a bottom view of the chip filter.

Fig. 6 is a longitudinal sectional view of the washing machine when the swarf filter is raised to the upper limit position.

Figure 7 is a schematic plan view of the inside of the washing tub.

Figure 8 is a schematic plan view of the inside of the washing tub.

Description of the reference numerals

1: washing machine; 4: washing tub; 4C: bottom wall; 7: first support shaft; 7A: lower end; 8: second support shaft; 9: swarf filter; 17: restricting portion; 23A: intake port; 28: floating plate portion; 30B: lower guiding groove; 30E: fin portion; Z: up and down direction; Z1: upper side; Z2: lower side; Q: washing.

Detailed ways

Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings. Fig. 1 is a longitudinal sectional view of a washing machine 1 according to an embodiment of the present invention. The washing machine 1 includes not only a washing machine that performs a washing operation of the laundry, a rinsing operation, and a dehydrating operation, but also a washing and drying machine that also performs a drying operation. The vertical direction in FIG. 1 is referred to as the vertical direction Z of the washing machine 1, and the upper side is referred to as the upper side Z1 and the lower side is referred to as the lower side Z2. The washing machine 1 includes a casing 2, an outer tub 3, a washing tub 4, a motor 5, a pulsator 6, a first support shaft 7 as an example of a support shaft, a second support shaft 8 as an example of another support shaft, and Chip filter 9.

The case 2 is made of, for example, metal, and is formed in a box shape. An opening 2B that communicates inside and outside the casing 2 is formed on the upper surface 2A of the casing 2. A door 11 that opens and closes the opening 2B is provided on the upper surface 2A.

The outer tub 3 is made of, for example, a resin, and is formed into a bottomed cylindrical shape having a bottom wall 3A at its lower end. An opening 3B is formed at an upper end of the outer tub 3. The outer tub 3 is elastically supported by the casing 2 via a boom 12 suspended from a metal frame (not shown) constituting a part of the casing 2 from the upper portion of the casing 2. A water supply path 13 connected to the tap of the tap water is connected to the upper portion of the outer tub 3. At the time of water supply, water from the water supply path 13 is accumulated in the outer tub 3 from the side of the bottom wall 3A.

The washing tub 4 is formed into a bottomed cylindrical shape that is slightly smaller than the outer tub 3. The washing tub 4 has a substantially cylindrical peripheral wall 4B having an inlet and outlet 4A at its upper end and a bottom wall 4C having a disk shape, and a hollow portion of the circumferential wall 4B is blocked from the lower side Z2. For example, the circumferential wall 4B is made of metal, and in the bottom wall 4C, the center portion is made of metal, and the outer peripheral portion is made of resin. The outer peripheral edge portion of the bottom wall 4C is formed in a tubular shape bent toward the upper side Z1, and can be regarded as a lower end portion of the circumferential wall 4B. The bottom wall 4C and the lower end portion of the circumferential wall 4B connected to the bottom wall 4C constitute the bottom portion 4D of the washing tub 4. The washing tub 4 is housed coaxially in the outer tub 3 and supported by the bottom wall 3A of the outer tub 3. The washing tub 4 in this state is rotatable about an axis J that passes through the center of the washing tub 4 and extends in the up and down direction Z.

The axis J of the washing tub 4 is also the center of the outer tub 3, and the rotation direction of the washing tub 4 coincides with the respective circumferential directions P of the outer tub 3 and the washing tub 4. Hereinafter, a radial direction centered on the axis J is referred to as a radial direction R, and among the radial directions R, a side of the axis J side, that is, a side toward the axis J is referred to as a radially inner side R1, and a side facing away from the axis J The side is called the radially outer side R2. The circumferential direction P and the radial direction R are both directions in the horizontal direction H.

The inlet and outlet 4A of the washing tub 4 is in a state of being in communication with the opening portion 3B of the tub 3. The opening 3B and the door 4A are opened and closed by the door 11. The user of the washing machine 1 can take the laundry Q into the washing tub 4 via the open port 4A. A through hole 4E is formed in each of the circumferential wall 4B and the bottom wall 4C, and water in the outer tub 3 is passed between the outer tub 3 and the washing tub 4 via the through hole 4E. Thereby, the washing tub 4 stores water from the side of the bottom wall 4C to the same level as the water level of the outer tub 3. At the time of drainage, the water stored in the outer tub 3 and the washing tub 4 is discharged to the outside of the machine via the drain passage 14 connected to the bottom wall 3A of the outer tub 3.

The inner peripheral surface 4F of the circumferential wall 4B is an example of the inner peripheral portion of the washing tub 4. The circumferential direction P is the extending direction of the inner peripheral surface 4F. An annular balancer 15 in the circumferential direction P is attached to the upper end portion of the inner peripheral surface 4F. The balancer 15 is a member for reducing the vibration of the washing tub 4 at the time of rotation, and a liquid such as salt water for assisting in reducing vibration is accommodated in the cavity 15A inside the balancer 15.

The motor 5 is disposed in the casing 2 on the lower side Z2 of the bottom wall 3A of the outer tub 3. The output shaft of the motor 5 branches into a tubular first output shaft 5A extending along the axis J to the upper side Z1, and a second output shaft 5B that is inserted into the first output shaft 5A with play. In addition, in FIG. 1 and FIG. 6 which will be described later, the left half of each of the first output shaft 5A and the second output shaft 5B is shown in cross section. The motor 5 can selectively output a driving force from either one of the first output shaft 5A and the second output shaft 5B. The first output shaft 5A extends to the upper side Z1 and penetrates the center of the bottom wall 3A. The upper end portion of the first output shaft 5A is coupled to the washing tub 4 by being fixed to the bottom wall 4C of the washing tub 4. When the motor 5 drives and transmits a driving force to the first output shaft 5A, the washing tub 4 rotates.

The pulsator 6 is a disk that is disposed in the horizontal direction H at the bottom 4D of the washing tub 4. The circumferential direction of the pulsator 6 coincides with the circumferential direction P of the washing tub 4, and the radial direction of the pulsator 6 coincides with the radial direction R of the washing tub 4. The upper surface constituting the surface of the pulsator 6 is provided with a plurality of convex portions 6A arranged in the circumferential direction P. Each of the convex portions 6A is formed as a rib that is convex along the radial direction R of the pulsator 6 and convex toward the upper side Z1. An upper end portion of the second output shaft 5B of the motor 5 that protrudes further toward the upper side Z1 than the first output shaft 5A passes through the bottom wall 4C of the washing tub 4, and is fitted to the center portion of the pulsator 6. When the motor 5 is driven and transmits a driving force to the second output shaft 5B, the pulsator 6 rotates about the axis J.

The first support shaft 7 is a cylindrical tube made of, for example, resin or metal that extends linearly in the vertical direction Z. The first support shaft 7 is disposed in the washing tub 4, and is disposed away from the inner circumferential surface 4F of the washing tub 4 toward the radially inner side R1 and away from the pulsator 6 toward the radially outer side R2. The upper end of the first support shaft 7 is disposed at the upper end portion of the washing tub 4, and is disposed at substantially the same height as the lower end surface 15B of the balancer 15, and is fixed to the upper end portion of the inner peripheral surface 4F via the support member 16. The support member 16 can be integrated with the first support shaft 7 as a part of the first support shaft 7. The lower end 7A of the first support shaft 7 is disposed, for example, at the same height as the vicinity of the center of the washing tub 4 in the up-and-down direction Z, and is disposed such that the upper side Z1 is away from the bottom wall 4C of the washing tub 4.

The region facing the first support shaft 7 from the radially outer side R2 in the inner peripheral surface 4F of the washing tub 4, that is, the same region as the first support shaft 7 in the circumferential direction P, is formed with a radially outer R2 circle. The accommodation groove 4G which is recessed in an arc shape and extends in the vertical direction Z (see also FIG. 7 described later). In both ends of the accommodation groove 4G in the circumferential direction P, a rib-shaped restricting portion 17 that protrudes inward in the radial direction R1 and extends in the vertical direction Z is provided one by one (see Fig. 7).

In association with the second support shaft 8, a portion exposed to the inside of the washing tub 4 in the outer peripheral portion of the bottom wall 4C of the washing tub 4 is integrally provided with a projecting portion 4H that projects toward the radially inner side R1. The projecting portion 4H is provided with, for example, a hollow protruding portion 4I that protrudes toward the upper side Z1, and a cylindrical projection 4J that protrudes toward the upper side Z1 is provided on the upper surface of the protruding portion 4I. The second support shaft 8 is formed, for example, in a columnar shape having substantially the same thickness as the projection 4J, and is disposed directly above the projection 4J. The second support shaft 8 is located at substantially the same position as the first support shaft 7 in the circumferential direction P, and is disposed closer to the radially inner side R1 than the first support shaft 7 and closer to the radially outer side R2 than the pulsator 6. The second support shaft 8 is coupled to the projection 4J via the elastic member 18. The elastic member 18 is, for example, a coil spring, and is fitted to both the projection 4J and the second support shaft 8 so as to surround at least an upper portion of the projection 4J and at least a lower portion of the second support shaft 8 . Thereby, the second support shaft 8 is elastically supported by the bottom wall 4C so as to be movable at least in the vertical direction Z.

The swarf filter 9 is supported by the first support shaft 7 from the upper side Z1 and supported by the second support shaft 8 from the lower side Z2. Hereinafter, the swarf filter 9 will be described with reference to the state supported by the first support shaft 7 and the second support shaft 8 in the radial direction R and the circumferential direction P. FIG. 2 is an enlarged view of the lint filter 9 of FIG. 1. Fig. 3 is a side view of the wire filter 9 viewed from the radially inner side R1. 4 is a plan view of the chip filter 9. FIG. 5 is a bottom view of the swarf filter 9. Referring primarily to FIG. 2, the swarf filter 9 has a retaining member 21 and a filter member 22.

The holding member 21 is formed, for example, in a box shape made of resin. The holding member 21 integrally includes a front panel 23, a pair of side plates 24 (refer to FIG. 3), a top plate 25, and a bottom plate 26. The front panel 23 has a plate thickness direction substantially coincident with the radial direction R, and is a flat plate extending in the circumferential direction P, strictly speaking in a tangential direction with respect to the circumferential direction P (see FIG. 4). In a lower region of the front panel 23, for example, a rectangular intake opening 23A that penetrates the front panel 23 in the radial direction R is formed. The side plates 24 are connected to the both ends of the front panel 23 in the circumferential direction P one by one, and are orthogonal to the front panel 23 and extend to the radially outer side R2.

The top plate 25 is a flat plate extending in the horizontal direction H, and is connected to the front plate 23 and the upper ends of the respective side plates 24. A portion of the top plate 25 that is closer to the radially outer side R2 than the side plate 24 is formed in a substantially triangular shape in which the width of the circumferential direction P is narrowed toward the radially outer side R2 (refer to FIG. 4). The holding member 21 has a circular tubular upper guide portion 27 that extends in the vertical direction Z at the end portion of the radially outer side R2 of the top plate 25. The internal space of the upper guide portion 27 is a cylindrical upper guide hole 27A that penetrates the upper guide portion 27 in the vertical direction Z. In the inner peripheral surface of the upper guide portion 27 in which the upper guide hole 27A is defined, a tapered chamfered portion 27B which is formed by chamfering the upper end of the inner peripheral surface is formed. The lower end of the upper guide portion 27 is located lower than the upper surface of the top plate 25, and the upper end of the upper guide portion 27 is located higher than the upper surface of the top plate 25. The holding member 21 further includes a partition plate 29 that extends from the lower end of the upper guide portion 27 toward the radially inner side R1 to be connected to the front panel 23. The partition plate 29 is disposed on the lower side Z2 of the top plate 25 and extends in parallel with the top plate 25.

A floating plate portion 28 is provided at a position higher than the intake opening 23A in the holding member 21, for example. An example of the floating plate portion 28 is sandwiched by the top plate 25 and the partition plate 29 from the vertical direction Z, and is sandwiched by the upper portion of the front plate 23 and the upper guide portion 27 from the radial direction R, and passes through the pair of side plates 24 from the circumferential direction P. The space that is enclosed and sealed is the so-called air trap. It is to be noted that the floating plate portion 28 may be formed of a material that generates buoyancy from foamed styrene or the like instead of the space.

The bottom plate 26 is a flat plate extending in the horizontal direction H, and is connected to the front plate 23 and the lower ends of the respective side plates 24. The holding member 21 has a lower guide portion 30 that is provided in a region on the radially outer side R2 of the bottom plate 26. A cylindrical lower guide hole 30A that penetrates the lower guide portion 30 in the vertical direction Z is formed at a position overlapping the upper guide hole 27A of the upper guide portion 27 in a plan view of the lower guide portion 30. The upper guide hole 27A and the lower guide hole 30A are disposed on the same straight line along the vertical direction Z. A portion of the lower guide portion 30 where the lower guide hole 30A is formed may be formed in the same circular shape as the upper guide portion 27 (refer to FIG. 5).

A lower guide groove 30B recessed toward the upper side Z1 is formed in the radially inner side R1 of the lower guide hole 30A in the lower end surface of the lower guide portion 30. The lower guide groove 30B extends in a circular arc shape in the circumferential direction around the lower guide hole 30A (refer to FIG. 5). In the inner peripheral surface of the lower guide portion 30 in which the lower guide groove 30B is defined, a chamfered portion 30C in which the lower end of the inner peripheral surface is chamfered is formed. It is also possible to form the through hole 30D in the region between the lower guide hole 30A and the lower guide groove 30B at the lower end surface of the lower guide portion 30. A portion of the lower guide hole 30 in the radially outer side R2 of the lower guide hole 30 is a thin plate-like fin portion 30E in the circumferential direction P. The fin portion 30E constitutes an end portion of the holding member 21 on the radially outer side R2. The upper guide hole 27A and the lower guide hole 30A are located between the floating plate portion 28 and the fin portion 30E in plan view (see FIG. 4).

The internal space 21A of the holding member 21 located on the lower side Z2 of the floating plate portion 28 is exposed from the intake opening 23A of the front panel 23 to the radially inner side R1. The internal space 21A also passes between the upper guide hole 27A and the lower guide hole 30A and is exposed to the radially outer side R2.

The filter member 22 is formed in a bag shape composed of, for example, a net or the like, and is fixed to the holding member 21. The filter member 22 is disposed in the internal space 21A of the holding member 21, and the opening 22A of the filter member 22 is exposed from the intake port 23A. The end portion 22B of the filter member 22 on the side opposite to the opening 22A may protrude from the inner space 21A toward the radially outer side R2. The end portion 22B can be branched into, for example, two in such a manner that the upper guide hole 27A and the lower guide hole 30A do not overlap in plan view (see FIGS. 4 and 5).

In the case where such a swarf filter 9 is assembled to the first support shaft 7 and the second support shaft 8, referring to Fig. 1, the operator shifts the second support shaft 8 to the lower side Z2, thereby making the first The space S between the lower end 7A of the support shaft 7 and the upper end 8A of the second support shaft 8 is enlarged in the vertical direction Z. In this state, the operator arranges the swarf filter 9 in the space S, and inserts the lower end 7A of the first support shaft 7 from the upper side Z1 into the upper guide hole 27A of the holding member 21 of the swarf filter 9. Then, when the operator returns the second support shaft 8 to the original position of the upper side Z1, the upper end 8A of the second support shaft 8 is inserted into the lower guide groove 30B of the holding member 31 from the lower side Z2. Thereby, the assembly of the lint filter 9 is completed. It is to be noted that the first support shaft 7 is smoothly inserted into the upper guide hole 27A through the chamfered portion 27B of the upper end of the upper guide hole 27A, and the second support shaft 8 is smoothly inserted through the chamfered portion 30C of the lower end of the lower guide groove 30B. Lower guide groove 30B (refer to FIG. 2). In order to smoothly insert in this manner, the same chamfered portion can be provided on each of the first support shaft 7 and the second support shaft 8.

The swarf filter 9 in the assembled state is supported by the first support shaft 7 in a state of being rotatable around the first support shaft 7 and being movable up and down along the first support shaft 7, and as described above by the second support shaft 8 from below Side Z2 support. In the swarf filter 9, the above-described fin portion 30E is provided on the opposite side of the inlet port 23A of the first support shaft 7, and is housed in the accommodating groove 4G of the inner peripheral surface 4F of the washing tub 4 (refer to FIG. 7). ). The outline of the accommodation groove 4G is along the rotational locus of the tip end of the fin portion 30E accompanying the rotation of the wire filter 9 in plan view. When the swarf filter 9 is rotated about the first support shaft 7, the tip end of the fin portion 30E is in contact with any one of the pair of restricting portions 17 provided at both ends of the accommodating groove 4G in the circumferential direction P, and thus the wire is filtered. The device 9 cannot be further rotated in the same direction (see FIGS. 7 and 8). Thereby, the rotation range of the swarf filter 9 is restricted by the regulating portion 17 so that the fin portion 30E does not leave the accommodating groove 4G. The range of rotation of the chip filter 9 is, for example, 120 degrees.

The swarf filter 9 shown in Fig. 1 is located at the lower limit position. When the wire filter 9 is at the lower limit position, the lower end 7A of the first support shaft 7 is in a state of being inserted into the upper portion of the upper guide hole 27A of the wire filter 9, and the upper end 8A of the second support shaft 8 is from the lower side. The side Z2 is inserted into the state of the lower guide groove 30B. The swarf filter 9 at the lower limit position is elastically supported by the elastic member 18 connected to the second support shaft 8. As described above, since the lower guide groove 30B is an elongated hole extending in the circumferential direction around the lower guide hole 30A (refer to FIG. 5), the wire filter 9 can be rotated around the first support shaft 7 even at the lower limit position.

When the water level in the washing tub 4 rises by the water supply, the entire swarf filter 9 rises together with the water level by the buoyancy generated by the floating plate portion 28 of the swarf filter 9. Thereby, the first support shaft 7 is deeply inserted into the upper guide hole 27A of the holding member 21 of the swarf filter 9, and further penetrates the internal space 21A of the holding member 21 and also inserts the lower guide hole 30A of the holding member 21. Further, as the swarf filter 9 rises from the lower limit position, the second support shaft 8 is detached from the lower guide groove 30B of the holding member 21.

When the maximum amount of water is accumulated in the washing tub 4, the swarf filter 9 reaches the upper limit position shown in FIG. At this time, since the upper end of the upper guide portion 27 of the holding member 21 of the swarf filter 9 comes into contact with the support 16 of the first support shaft 7 from the lower side Z2, the swarf filter 9 cannot be further raised. Further, the lower end 7A of the first support shaft 7 is in a state of protruding from the lower guide hole 30A of the swarf filter 9 located at the upper limit position to the lower side Z2. When the water level in the washing tub 4 is lowered by the drainage, the entire swarf filter 9 is lowered together with the water level, and finally reaches the lower limit position (refer to Fig. 1). At this time, the second support shaft 8 on the side of the washing tub 4 is inserted into the lower guide groove 30B of the wire filter 9 from the lower side Z2.

As described above, the swarf filter 9 ascends and descends as the water level in the washing tub 4 changes. Moreover, regardless of the water level in the washing tub 4, the holding member 21 intake opening 23A of the swarf filter 9 is always disposed at a position equal to or lower than the water level in the washing tub 4.

Next, the washing performed in the washing machine 1 will be described. Referring to Fig. 1, before the start of the washing operation, the user opens the door 11, and closes the door 11 after the laundry Q is accommodated in the washing tub 4 via the inlet and outlet 4A. The water in which the detergent is dissolved is stored as washing water in the outer tub 3 and the washing tub 4 by the subsequent water supply. With the water supply, the swarf filter 9 rises from the lower limit position as described above. When the water level in the washing tub 4 rises to a prescribed water level, the water supply is stopped. Then, the pulsator 6 is rotated in a state where the washing tub 4 is stationary, thereby generating a water flow of the washing water in the washing tub 4. The laundry Q on the pulsator 6 in the washing tub 4 is stirred by the water flow and the convex portion 6A of the rotating pulsator 6. The laundry Q is washed by being stirred or by decomposing the dirt by the detergent contained in the washing water. When the outer tub 3 and the washing tub 4 are drained after a predetermined time elapses from the start of the rotation of the pulsator 6, the washing operation ends. The swarf filter 9 descends to the lower limit position with the drainage.

In the rinsing operation after the washing operation, the tap water is stored as the rinsing water in the outer tub 3 and the washing tub 4 to a predetermined water level, and the pulsator 6 is rotated while the washing tub 4 is stationary. Thereby, a water flow of the rinsing water is generated in the washing tub 4. The laundry Q in the washing tub 4 is rinsed by the water flow. When the outer tub 3 and the washing tub 4 are drained after a predetermined time elapses from the start of the rotation of the pulsator 6, the rinsing operation ends.

The dehydration operation can be carried out as the final dewatering after the rinsing operation, but it can also be carried out as the intermediate dehydration after the washing operation. In the dehydrating operation, the washing tub 4 is dehydrated and rotated at a high speed. Thereby, moisture oozes out from the laundry Q in the washing tub 4 and is discharged from the through hole 4E of the washing tub 4. When the final dehydration ends, the washing of the washing machine 1 ends. The user opens the door 11 to take out the laundry Q in the washing tub 4 from the entrance 4A of the washing tub 4.

In the washing operation and the rinsing operation, the water flow in the washing tub 4 flows in the same direction as the rotation direction of the pulsator 6 substantially in the circumferential direction P. For example, as shown in Fig. 7, when the water flow flows clockwise in a plan view (refer to the white hollow arrow), the fin portion 30E of the swarf filter 9 receives a part of the water flow. Thereby, the entire swarf filter 9 is rotated clockwise (refer to the black arrow) around the first support shaft 7, and the swarf filter 9 intake port 23A is opposed to the water flow (refer to the white hollow arrow) from the downstream side. Thereby, the chips (not shown) which are detached from the laundry Q and flow together with the water flow in the washing tub 4 enter the filter member 22 of the swarf filter 9 from the intake port 23A and are collected.

On the other hand, as shown in FIG. 8, when the water flow in the washing tub 4 flows counterclockwise in plan view (refer to the white hollow arrow), the fin portion 30E of the swarf filter 9 is shown in FIG. Take part of this water flow. Thereby, the entire swarf filter 9 is rotated counterclockwise (refer to the black arrow) around the first support shaft 7, and the squirrel filter 9 intake port 23A is opposed to the water flow (refer to the white hollow arrow) from the downstream side. Thereby, the chips (not shown) which are detached from the laundry Q and flow together with the water flow in the washing tub 4 enter the filter member 22 of the swarf filter 9 from the intake port 23A and are collected.

As described above, in the washing machine 1, the lint filter 9 supported by the first support shaft 7 is lifted and lowered along the first support shaft 7 by the buoyancy generated by the floating plate portion 28 (see Figs. 1 and 6). Thereby, the lint intake port 23A of the lint filter 9 is always disposed at a water level in the washing tub 4 or a position lower than the water level, so that the lint contained in the water in the washing tub 4 can be efficiently captured. Further, the fin portion 30E receives the water flow in the washing tub 4, so that the swarf filter 9 faces the water in the washing tub 4 with respect to the intake opening 23A on the opposite side of the fin portion 30E of the first support shaft 7. The method is rotated about the first support shaft 7 (refer to FIGS. 7 and 8). Thereby, the intake port 23A is always disposed at a position where the water flow in the washing tub 4 flows, so that the lint contained in the water flow can be efficiently captured. Therefore, even if the water level and the intensity of the water flow in the washing tub 4 are changed, the lint in the washing tub 4 can be efficiently trapped by the lint filter 9.

Further, the rotation range of the lint filter 9 is restricted by the restricting portion 17 so that the intake port 23A does not deviate from the position at which the lint can be effectively captured, so that the washing tub can be more efficiently trapped by the lint filter 9. Wire scraps within 4. It should be noted that when the wire filter 9 is at the lower limit position, the lower guide groove 30B formed in the wire filter 9 and the second support shaft 8 inserted into the lower guide groove 30B may also serve as the restriction chip filter 9. The action of the restriction portion of the rotation range (see Figs. 7 and 8).

As described above, when the second support shaft 8 elastically supported by the bottom wall 4C of the washing tub 4 is displaced to the lower side Z2 in such a manner as to be movable in the up-down direction Z, the first support shaft 7 and the other second support The space S (see FIGS. 1 and 6) between the shafts 8 is enlarged in the vertical direction Z. It is assembled in such a manner that when the second filter shaft 8 is returned to the original position of the upper side Z1 after the swarf filter 9 is disposed in the space S, the swarf filter 9 is composed of the first support shaft 7 and the other second Both of the support shafts 8 are supported (see Fig. 1). Therefore, the assembly of the wire filter 9 is improved.

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the invention.

For example, although the washing machine 1 is a vertical dryer in which the axis J of the washing tub 4 is vertically extended in the vertical direction Z, the washing machine 1 may include a configuration in which the axis J is slightly inclined with respect to the vertical direction Z. Further, the first support shaft 7 may extend in the vertical direction as described above or may extend slightly obliquely. In the case where the first support shaft 7 is disposed obliquely, the swarf filter 9 can be raised and lowered while being inclined with respect to the vertical direction.

Further, the swarf filter 9 that rotates around the first support shaft 7 may have a waiting position in the rotational direction. For example, the position of the lint filter 9 when the intake port 23A faces the radially inner side R1 is an example of the waiting position. Further, a urging member (not shown) may be provided in the washing tub 4 and the swarf filter 9, and the urging member rotates the swarf filter 9 to the waiting position as the water flow in the washing tub 4 is weakened.

Claims

A washing machine, comprising:

Washing the bucket, accommodating the laundry and storing water;

a support shaft disposed in the washing tub and extending in an up and down direction;

a lint filter supported by the support shaft to be capable of rotating around the support shaft and capable of ascending and descending along the support shaft, trapping the wire in the washing tub, the wire filter having: a wire a chip intake port; a fin portion disposed on an opposite side of the intake port with respect to the support shaft, receiving a flow of water in the washing tub to rotate the wire filter; and a floating plate portion, Generate buoyancy.
A washing machine according to claim 1, wherein

A limiter is also included to limit the range of rotation of the chip filter.
A washing machine according to claim 1 or 2, characterized in that

The lower end of the support shaft is disposed to be away from the bottom wall of the washing tub to the upper side,

The washing machine further includes another support shaft that is elastically supported by the bottom wall in a movable manner in the up-down direction and supports the lint filter from the lower side.