WO2021184959A1

WO2021184959A1 - Washing machine

Info

Publication number: WO2021184959A1
Application number: PCT/CN2021/073759
Authority: WO
Inventors: 新村光则; 竹内晴美
Original assignee: 青岛海尔洗衣机有限公司; Aqua株式会社; 海尔智家股份有限公司
Priority date: 2020-03-19
Filing date: 2021-01-26
Publication date: 2021-09-23
Also published as: JP7481701B2; CN115315553B; CN115315553A; JP2021145965A

Abstract

Provided is a washing machine, a rotating wing of which is not prone to rotating with the rotation of a water-pumping wing. The fully automatic washing machine (1) is provided with: a washing and spin-drying tub (22) rotatably configured inside an outer tub (20); a rotating wing (30) rotatably configured at the bottom of the washing and spin-drying tub (22); a water-pumping wing (40) rotatably configured between a bottom wall of the washing and spin-drying tub (22) and the rotating wing (30); a water-pumping path (26) which is arranged on a side wall of the washing and spin-drying tub (22) and is used for water supplied by means of the rotation of the water-pumping wing (40) to flow through same; a discharge port for discharging the water flowing through the water-pumping path (26) into the washing and spin-drying tub (22); a drive unit (60) capable of driving the water-pumping wing (40) without driving the rotating wing (30); and a separation plate (50) for separating the rotating wing (30) from the water-pumping wing (40).

Description

washing machine

Technical field

The invention relates to a washing machine.

Background technique

Patent Document 1 discloses a washing machine including: rotating wings, which are rotatably provided at the bottom of the washing and dehydration tub; a water pumping channel, which is provided on the side wall of the washing and dehydrating tub; and the water lifting wing is provided for washing and dehydrating. Between the bottom of the bucket and the rotating wing, the washing liquid in the washing and dewatering bucket is circulated through the water-lifting channel; and the speed increasing device makes the rotating speed of the water-lifting wing faster than the rotating speed of the rotating wing.

In the above-mentioned washing machine, the speed increasing device consists of a sun gear fixed to the bottom of the washing and dehydration tub, a planetary gear fixed to the rotating wing and rotating around the sun gear, and an outer ring fixed to the hydrofoil and meshed with the outer circumference of the planetary gear to rotate. Gear composition. When the rotating wing rotates, the rotation is accelerated by the planetary gears and the outer ring gear and then transmitted to the lifting hydrofoil, and the lifting hydrofoil rotates at a higher speed than the rotating wing.

Prior art literature

Patent literature

Patent Document 1: Japanese Patent Application Publication No. 2009-28509

Summary of the invention

The problem to be solved by the invention

In the washing machine of Patent Document 1, both the rotary blade and the hydrofoil rotate during the washing process. Therefore, in the case of washing delicate laundry, there is a hidden danger that the delicate laundry is easily damaged due to the friction of the rotating rotating wings.

Therefore, the drive unit including the drive motor may be configured to transmit the rotation of the drive motor to the hydrofoil without transmitting the rotation of the drive motor to the rotor blade. In this way, delicate laundry can be gently washed through the circulation of water in the washing and dehydrating bucket realized by the rotation of the hydrofoil.

However, in the case of adopting such a structure, when the hydrofoil rotates, the rotation will be transmitted to the rotor due to the viscosity of the water between the hydrofoil and the rotor, and there will be the rotor even if it is not driven by the drive motor. The hidden danger that will rotate.

The present invention solves such a problem, and its object is to provide a washing machine in which the rotary wing is not easy to rotate together due to the rotation of the hydrofoil.

Solutions used to solve the problem

The washing machine of the main aspect of the present invention is provided with: a washing and dewatering bucket, which is rotatably arranged in the outer tub; a rotating wing, which is rotatably arranged at the bottom of the washing and dewatering bucket; and a lifting wing, which is rotatably arranged It is arranged between the bottom wall of the washing and dewatering bucket and the rotating wing; the water lifting path is provided on the side wall of the washing and dewatering bucket for the water supplied by the rotation of the water lifting wing to flow through; the spit, The water flowing through the water lifting path is spit out into the washing and dewatering bucket; a driving part capable of driving the water lifting wing without driving the rotary wing; and a partition plate that connects the rotary wing and the Separate between the lift wings.

According to the above structure, when only the hydrofoil is driven by the drive part without driving the rotating wing, the partition plate can cut off the transmission of the viscosity of the water between the hydrofoil and the rotating wing, which is about to rotate the rotating wing.的力。 The force. As a result, it is possible to prevent a situation in which the rotor blade rotates with the rotation of the hydrofoil.

In the washing machine of this aspect, the following structure may be adopted: the water lifter is accommodated in a recess provided on the bottom wall of the washing and dewatering tub, and the outer peripheral edge of the partition plate is connected to the bottom of the washing and dewatering tub from above. The outer peripheral edge portions of the recesses on the wall overlap.

According to the above structure, the water protruding from the lifter blade hardly leaks above the recessed portion. As a result, water can be efficiently supplied from the recessed portion to the lifting channel, and the amount of water supplied to the lifting channel can be increased.

In the washing machine of this aspect, a structure further including a shaft portion, a through hole, and a restricting portion may be adopted, wherein the shaft portion extends downward from the rotating wing, and the through hole is provided in the center of the partition plate The shaft portion penetrates through the shaft portion, and the restricting portion is provided on the shaft portion to restrict upward movement of the central portion of the partition plate.

According to the above configuration, the upper movement of the central portion of the partition plate is restricted by the restricting portion, and therefore, the partition plate is unlikely to float up or deform due to the water pressure generated when the hydrofoil rotates.

In the washing machine of this aspect, it is possible to adopt a structure further provided with a shaft portion, a through hole, and an annular protrusion, wherein the shaft portion extends downward from the rotating wing, and the through hole is provided in the partition. A plate through which the shaft portion penetrates, and the ring-shaped protrusion is provided around the through hole of the partition plate and protrudes upward.

According to the above structure, when draining water from the washing and dewatering tub, etc., it is possible to prevent the foreign matter flowing to the partition plate and entering the through hole by the protrusion. As a result, it is possible to prevent foreign matter from getting stuck between the through hole and the shaft and hindering the rotation of the rotor blade.

In the washing machine of this aspect, a plurality of first holes may be formed in the rotary wing. In this case, a plurality of second holes having a hole diameter greater than or equal to the hole diameter of the first hole are formed in the partition plate.

According to the above-mentioned structure, when draining water from the washing and dewatering tub, for example, foreign matter discharged to the upper surface of the partition plate through the first hole of the rotary blade can be discharged through the second hole. This prevents foreign matter from accumulating on the upper surface of the partition plate.

In the case of adopting the above-mentioned structure, further, it may be that, in the hydrofoil, a blade is formed on the lower surface opposite to the bottom wall of the washing and dewatering bucket, and is formed with a hole larger than that of the first hole. A plurality of third holes with a diameter of φ, a suction port for sucking water from the bottom of the outer tub when the blade rotates is formed on the bottom wall of the washing and dewatering tub.

With such a structure, when draining from the washing and dewatering tub, for example, foreign matter discharged to the upper surface of the hydrofoil through the second hole of the partition plate can be discharged through the third hole. This prevents foreign matter from accumulating on the upper surface of the hydrofoil.

Furthermore, when the lifting blade rotates, the water at the bottom of the outer tub can be sucked from the suction port and supplied to the lifting channel, and the water in the washing and dewatering barrel can be taken into the lifting blade through the second hole and the third hole. The blade part is also supplied to the lifting channel. This can increase the amount of water supplied to the hoisting channel by the hydrofoil.

Invention effect

According to the present invention, it is possible to provide a washing machine in which the rotary wing does not easily rotate together due to the rotation of the hydrofoil.

The effect and significance of the present invention will become clearer through the description of the embodiments shown below. However, the following embodiment is only an example when implementing the present invention after all, and the present invention is not limited to the content described in the following embodiment.

Description of the drawings

Fig. 1 is a side cross-sectional view of a fully automatic washing machine according to an embodiment.

Fig. 2 is a longitudinal sectional view of the main part of the fully automatic washing machine showing the bottom of the outer tub and the drive unit of the embodiment.

Fig. 3 is a plan view of the rotary wing of the embodiment.

Fig. 4 (a) and (b) are respectively a plan view and a bottom view of the hydrofoil of the embodiment.

Fig. 5 (a) and (b) are respectively a plan view and a bottom view of the partition plate of the embodiment.

Fig. 6(a) is a plan view of the first pulley of the embodiment, and Fig. 6(b) is a plan view of the second pulley of the embodiment.

Fig. 7 is a longitudinal cross-sectional view of the drive unit showing the periphery of the first clutch mechanism according to the embodiment.

Fig. 8 is a perspective view of the first clutch mechanism part of the embodiment.

FIG. 9(a) is a diagram schematically showing the state of switching to the single-wing drive mode by the first clutch mechanism section of the embodiment, and FIG. 9(b) is a diagram schematically showing the state of the embodiment by the first clutch mechanism Figure showing the state where the part is switched to the double-wing drive mode.

Fig. 10 is a longitudinal cross-sectional view of a drive unit showing the periphery of a second clutch mechanism according to the embodiment.

Fig. 11 is a bottom view of the drive unit showing the periphery of the second clutch mechanism part of the embodiment.

Fig. 12 is a bottom view of the drive unit in a state in which the first pulley, the second pulley, and the clutch mechanism are removed from the periphery of the second clutch mechanism portion of the embodiment.

FIG. 13(a) is a perspective view of the clutch mechanism 910 with the upside down of the embodiment, FIG. 13(b) is a perspective view of the clutch body of the embodiment, and FIG. 13(c) is the upside-down clutch of the embodiment A perspective view of the supporting part.

Description of Reference Signs

1: Fully automatic washing machine (washing machine); 20: outer tub; 22: washing and dewatering tub; 22b: water passage (suction port); 22c: outer peripheral edge; 24: recessed portion; 25a: discharge port; 26: pumping channel; 30 : Rotating wing; 32: Water discharge hole (first hole); 33: Fixed boss (shaft portion); 33a: Large diameter portion (restriction portion) 40: Lifting wing; 45: Water passing hole (first hole); 50 : Partition plate; 50a: outer peripheral edge portion; 51: boss portion; 51a: protrusion; 51b: hole (through hole); 53: water passage hole (third hole); 60: drive unit (drive portion); 400: Rotating wing shaft (shaft part).

Detailed ways

Hereinafter, a fully automatic washing machine 1 as an embodiment of the washing machine of the present invention will be described with reference to the drawings.

Fig. 1 is a side cross-sectional view of a fully automatic washing machine 1 according to this embodiment.

The fully automatic washing machine 1 includes a cabinet 10 constituting an external appearance. The box body 10 includes a bottomed square cylindrical body portion 11 with an open upper surface, and an upper panel 12 covering the upper surface of the body portion 11. Feet 13 are provided on the outer bottom surface of the box body 10. The upper panel 12 is formed with an input port 14 for inputting laundry. The injection port 14 is covered by an upper cover 15 that can be opened and closed.

In the box body 10, a substantially cylindrical outer tub 20 having an upper surface opening is elastically suspended and supported by four hanging rods 21 having a vibration isolator. In the outer tub 20, a substantially cylindrical washing and dewatering tub 22 with an open upper surface is arranged. Many dewatering holes 22a are formed on the side wall of the washing and dewatering tub 22 throughout the entire circumference. A balance ring 23 is provided on the upper part of the washing and dewatering tub 22.

A rotating blade 30 is arranged at the bottom of the washing and dewatering tub 22. In addition, at the bottom of the washing and dewatering tub 22, a hydrofoil 40 is arranged between the rotating wing 30 and the bottom wall of the washing and dewatering tub 22. The bottom wall of the washing and dewatering tub 22 is formed with a recess 24 that is recessed in a substantially circular shape corresponding to the shape of the hydrofoil 40, and the hydrofoil 40 is accommodated in the recess 24. A partition plate 50 that partitions the rotor blade 30 and the hydrofoil 40 is arranged at the entrance of the recess 24. The detailed structure of the rotor blade 30, the lifter blade 40, and the partition plate 50 will be described later.

A plurality of water passage ports 22b are formed at the position of the recessed portion 24 on the bottom wall of the washing and dehydrating tub 22. The water passage 22b corresponds to the suction port of the present invention.

A water pumping cover 25 is attached to the side wall of the washing and dewatering tub 22, whereby the water pumping passages 26 extending in the vertical direction are arranged at three locations in the circumferential direction at substantially equal intervals. The lower end of each pumping channel 26 is connected to the recess 24. A slit-shaped discharge port 25a is formed in the upper part of each water lifting cover 25. As shown in FIG.

At the outer bottom of the outer tub 20, a driving unit 60 for driving the washing and dewatering tub 22, the rotating wing 30, and the water-lifting wing 40 is arranged. During the washing process and the rinsing process, the drive unit 60 sometimes rotates the rotary wing 30 and the hydrofoil 40 according to the washing operation process, and sometimes rotates the hydrofoil 40 without rotating the rotary wing 30. In addition, the driving unit 60 integrally rotates the washing and dewatering tub 22, the rotary wing 30, and the water-lifting wing 40 during the dehydration process. The drive unit 60 corresponds to the drive unit of the present invention. The detailed structure of the drive unit 60 will be described later.

A cylindrical drain port 20a is formed in the outer bottom of the outer tub 20. As shown in FIG. A drain valve 70 is connected to the drain port 20a. A drain hose 71 is connected to the drain valve 70. That is, the drain port 20a and the drain hose 71 constitute a drain path, and the drain valve 70 is arranged in the drain path. When the drain valve 70 is opened, the water stored in the washing and dehydrating tub 22 and the outer tub 20 is drained out of the machine through the drain hose 71.

A water supply unit 80 for supplying tap water to the washing and dehydrating tub 22 is arranged at the rear of the upper panel 12. The water supply unit 80 has a water supply valve 81. The water supply valve 81 is connected to a water tap. When the water supply valve 81 is opened, the tap water is introduced into the water supply unit 80 from the tap. The introduced tap water flows out from the water injection port 82 of the water supply unit 80 into the washing and dehydrating tub 22.

2 is a longitudinal sectional view of the main part of the fully automatic washing machine 1 showing the bottom of the outer tub 20 and the driving unit 60. As shown in FIG. FIG. 3(a) is a plan view of the rotor blade 30. (A) and (b) of FIG. 4 are a top view and a bottom view of the hydrofoil 40, respectively. (A) and (b) of FIG. 5 are a top view and a bottom view of the partition plate 50, respectively. It should be noted that the illustration of the hanging rod 21 is omitted in FIG. 2.

First, the structure of the rotary blade 30, the lifter blade 40, and the partition plate 50 will be described in detail.

2 and 3, the rotary wing 30 has a substantially circular plate shape. A plurality of blades 31 extending radially from the center are formed on the upper surface of the rotor blade 30. In addition, in the rotor blade 30, a plurality of water discharge holes 32 are formed in each area between the two blades 31. The drain hole 32 corresponds to the first hole of the present invention.

In the rotary wing 30, a columnar fixed boss 33 protruding downward is formed at the center of the lower surface. The fixed boss 33 includes an upper large-diameter portion 33a with a large outer diameter and a lower-side small-diameter portion 33b whose outer diameter is smaller than the large-diameter portion 33a by the thickness of the boss portion 51 of the partition plate 50. The fixed boss 33 is formed with a boss hole 34 into which the rotary wing shaft 400 is inserted. In addition, in the fixing boss 33, a recess 35 having a mounting hole on the bottom surface is formed on the boss hole 34.

The upper end of the rotating wing shaft 400 of the driving unit 60 is inserted into the boss hole 34 of the fixing boss 33, and the screw 91 passing through the mounting hole 35 a is fixed in the threaded hole of the upper end of the rotating wing shaft 400. Thus, the rotor shaft 400 is assembled to the rotor blade 30. As shown in FIG. The fixed boss 33 and the rotating wing shaft 400 constitute a shaft portion of the present invention extending downward from the rotating wing 30.

Referring to Fig. 2 and Fig. 4(a) and (b), the hydrofoil 40 has a substantially disc shape. The center side of the hydrofoil 40 is slightly recessed downward, thereby forming a circular recess 41. In the hydrofoil 40, a bottomed cylindrical fixing portion 42 protruding downward is formed in the center of the concave portion 41. As shown in FIG. In the fixing portion 42, a circular opening 43 is formed in the center, and a plurality of mounting holes 44 are formed around the opening 43. In the recessed portion 41, three rows of water passing holes 45 are formed in the radial direction in such a manner that a plurality of water passing holes 45 are arranged in the circumferential direction in the fixing portion 42. The diameter of the water passage holes 45 in the center row is larger than the diameter of the water passage holes 45 in the other rows. In addition, the hole diameter of the water passage hole 45 of any size is larger than the hole diameter of the water discharge hole 32 of the rotor blade 30. It should be noted that the diameters of the plurality of water passage holes 45 in all three rows may be made equal. The water passage hole 45 corresponds to the third hole of the present invention.

A plurality of blades 47 extending radially from the ring-shaped rib 46 surrounding the fixed portion 42 toward the outer peripheral side are formed on the lower surface of the hydrofoil 40. On the upper surface of the hydrofoil 40, an annular rib 48 is formed at the outer peripheral edge.

The flange-shaped upper end part of the hydrofoil shaft 300 of the drive unit 60 abuts against the fixed part 42 from below. The screws 92 passing through the mounting holes 44 are fixed in the threaded holes at the upper end of the hydrofoil shaft 300. Thus, the hydrofoil shaft 300 is assembled to the hydrofoil 40. The rotating wing shaft 400 passes through the opening 43 of the fixed portion 42.

2 and 5(a) and (b), the partition plate 50 is formed in a substantially circular shallow dish shape, and has a cross-sectional shape that gradually becomes deeper from the outer peripheral edge portion 50a toward the center portion. A cylindrical boss portion 51 is provided in the center of the partition plate 50. The upper end of the boss portion 51 is a ring-shaped protrusion 51 a that protrudes upward from the bottom surface of the recess 52 around the boss portion 51. Three rows of water passage holes 53 are formed in the radial direction in such a manner that the plurality of water passage holes 53 are arranged in the circumferential direction in the recess 52. The hole diameter of the water passage holes 53 in the center row is larger than the hole diameter of the water passage holes 53 in the other rows. In addition, the hole diameter of the water passage hole 53 of any size is larger than the hole diameter of the water discharge hole 32 of the rotor blade 30. It should be noted that the pore diameters of the plurality of water passage holes 53 in all three rows may be made equal. The water passage hole 53 corresponds to the second hole of the present invention.

In the partition plate 50, an annular rib 54 for reinforcement and a positioning piece 55 extending outward from the rib 54 are formed on the lower surface of the outer peripheral edge portion 50a. The positioning pieces 55 are formed at three places with substantially equal intervals in the circumferential direction.

The outer peripheral edge portion 22c of the recessed portion 24 on the bottom wall of the washing and dewatering tub 22 is one level lower than the outer side. The lower end portions of the three water pumping covers 25 constitute a part of the outer peripheral edge portion 22c of the recessed portion 24, and a slit groove 25b is formed in the center of the lower end portion.

The partition plate 50 is disposed on the bottom wall of the washing and dewatering tub 22 so as to cover the recessed portion 24, that is, the entirety of the hydrofoil 40 in the recessed portion 24, and its outer peripheral edge portion 50a overlaps the outer peripheral edge portion 22c of the recessed portion 24 from above. The three positioning pieces 55 of the partition plate 50 are inserted into the slit grooves 25 b of the three water lifting covers 25. As a result, the partition plate 50 is fixed to the bottom wall of the washing and dehydrating tub 22 so as not to rotate in the horizontal direction.

The small diameter portion 33b of the fixed boss 33 of the rotating wing 30 is inserted into the boss portion 51 of the partition plate 50. That is, the fixed boss 33 and the rotating wing shaft 400 penetrate the hole 51 b inside the boss portion 51. A minute gap is formed between the inner peripheral surface of the boss portion 51 and the outer peripheral surface of the small diameter portion 33b. The boss portion 51 is sandwiched between a washer 36 arranged on the bottom surface of the large-diameter portion 33 a of the fixed boss 33 and a washer 37 attached to the rotating wing shaft 400. The boss portion 51 is in contact with the large diameter portion 33a via the washer 36, whereby the upward movement of the central portion of the partition plate 50 is restricted. In addition, the hole 51b in the inside of the boss|hub part 51 corresponds to the through-hole of this invention. In addition, the large-diameter portion 33a of the fixed boss 33 corresponds to the restricting portion of the present invention.

In the state where the boss portion 51 is in contact with the large diameter portion 33a via the washer 36, the partition plate 50 is in a state where it is elastically deformed so as to be slightly upwardly warped, and its outer peripheral edge portion 50a presses the outer peripheral edge portion of the recessed portion 24 22c.

The fixed boss 33 and the rotating wing shaft 400 are in contact with the boss portion 51 via two washers 36 and 37. The two washers 36 and 37 are made of metal and have low frictional resistance. Therefore, the sliding resistance applied to the fixed boss 33 and the rotating wing shaft 400 is reduced, and the rotating wing 30 can be rotated smoothly.

Next, the structure of the drive unit 60 will be described in detail.

2, the driving unit 60 includes: a driving motor 100, a dehydration barrel shaft 200, a hydrofoil shaft 300, a rotating wing shaft 400, a bearing unit 500, a first transmission mechanism part 600, a second transmission mechanism part 700, and a first clutch mechanism Section 800 and the second clutch mechanism section 900.

The drive motor 100 is an outer rotor type DC brushless motor that generates torque for driving the washing and dewatering tub 22, the rotating wing 30, and the lifting wing 40. The driving motor 100 includes a rotor 110 and a stator 120. A motor shaft 130 is mounted in the center of the rotor 110. The motor shaft 130 is rotatably supported by the support part 150 via the upper and lower rolling

bearings

141 and 142. It should be noted that the drive motor 100 may be another type of motor such as a built-in rotor type DC brushless motor.

The dewatering bucket shaft 200, the lifting wing shaft 300, and the rotating wing shaft 400 constitute the rotating shafts of the washing and dewatering bucket 22, the lifting wing 25, and the rotating wing 24, respectively.

The dehydration barrel shaft 200 is formed by combining three members of an upper part, a middle part, and a lower part. The dehydration barrel shaft 200 is hollow, and its central part bulges outward to form a brake drum 201. Inside the dehydration barrel shaft 200, sliding

bearings

211 and 212 are provided at the upper end and the lower end, and an oil seal 213 is provided above the sliding bearing 211.

The hydrofoil shaft 300 is inserted into the dehydration barrel shaft 200. The upper part of the hydrofoil shaft 300 protrudes upward from the dehydration bucket shaft 200, and the lower part of the hydrofoil shaft 300 protrudes downward from the dehydration bucket shaft 200. The outer peripheral surface of the hydrofoil shaft 300 is received by sliding

bearings

211 and 212, and the hydrofoil shaft 300 rotates smoothly in the dewatering bucket shaft 200. In addition, the oil seal 213 can prevent water from entering between the dehydration barrel shaft 200 and the hydrofoil shaft 300. The hydrofoil shaft 300 is hollow, and sliding

bearings

311 and 312 are provided at the upper end and the lower end inside it, and an oil seal 313 is provided above the sliding bearing 311.

The rotating wing shaft 400 is inserted into the lifting wing shaft 300. The upper part of the rotary wing shaft 400 protrudes upward from the hydrofoil shaft 300, and the lower part of the rotary wing shaft 400 protrudes downward from the hydrofoil shaft 300. The outer peripheral surface of the rotary wing shaft 400 is received by sliding

bearings

311 and 312, and the rotary wing shaft 400 rotates smoothly in the hydrofoil shaft 300. In addition, the oil seal 313 can prevent water from entering between the hydrofoil shaft 300 and the rotating wing shaft 400.

The bearing unit 500 includes: a mounting base 510 having a substantially rectangular planar shape; and a bearing box 520 mounted on the central part of the mounting base 510 from below. A circular bearing recess 511 is formed in the center of the upper surface of the mounting base 510. A rolling bearing 531 is arranged in the bearing recess 511. In addition, an oil seal 540 is provided at the entrance of the bearing recess 511.

The bearing housing 520 has a bottomed cylindrical shape whose bottom 521 has a narrower diameter. A rolling bearing 532 is arranged on the bottom 521 of the bearing box 520. A flange portion 522 is formed at the upper end of the bearing box 520, and the flange portion 522 is screwed to the mounting base 510 (refer to FIG. 8). In addition, a support portion 523 that supports a rod shaft described later is formed at the upper end of the bearing box 520.

In the dewatering bucket shaft 200 into which the hydrofoil shaft 300 and the rotary wing shaft 400 are rotatably inserted, the upper part is rotatably supported by the bearing recess 511 of the mounting table 510 via the rolling bearing 531, and the lower part is rotatably supported by the bearing via the rolling bearing 532 The bottom 521 of the box 520. The brake drum 201 of the dehydration tub shaft 200 is accommodated in the bearing box 520.

The installation stand 510 is assembled on the bottom wall of the outer tub 20. The dehydration barrel shaft 200 extends into the interior of the outer barrel 20. In the outer tub 20, a dewatering tub shaft 200 is fixed to the washing and dewatering tub 22. In addition, the hydrofoil shaft 300 and the rotating wing shaft 400 extend into the interior of the washing and dewatering tub 22. Inside the washing and dewatering tub 22, as described above, the hydrofoil shaft 300 is fixed to the hydrofoil 40, and the rotating wing shaft 400 is fixed to the rotating wing 30.

On the mounting table 510, the drive motor 100 is mounted on the side of the bearing box 520 with the motor shaft 130 facing downward. Thereby, under the outer tub 20, the motor shaft 130 is in a state parallel to the rotating wing shaft 400 and the hydrofoil shaft 300. In addition, the mounting base 510 is equipped with a drain valve 70 on the side opposite to the drive motor 100 with respect to the bearing box 520.

FIG. 6(a) is a plan view of the first pulley 610, and FIG. 6(b) is a plan view of the second pulley 710. As shown in FIG.

2 and 6(a), the first transmission mechanism 600 includes: a first pulley 610, a first motor pulley 620, and a first transmission belt 630 connecting the first pulley 610 and the first motor pulley 620 .

The first pulley 610 is fixed to the lower part of the rotary wing shaft 400 exposed from the hydrofoil shaft 300 below the outer tub 20. The first pulley 610 includes a disc-shaped pulley portion 611 and a clutch shell portion 612 fitted in the upper center of the pulley portion 611. A plurality of engagement recesses 613 having predetermined intervals in the circumferential direction are formed on the upper end surface of the clutch shell portion 612.

The first motor pulley 620 includes a pulley portion 621 having a flange at the lower end and a hub portion 622 integrally formed on the upper side of the pulley portion 621.

The first motor pulley 620 is rotatably supported by the motor shaft 130 of the drive motor 100. That is, the hub 622 of the first motor pulley 620 is assembled to the tip of the motor shaft 130 via two rolling bearings 640. The first motor pulley 620 rotates smoothly with respect to the motor shaft 130 through the rolling bearing 640.

The outer diameter of the pulley portion 611 of the first pulley 610 is larger than the outer diameter of the pulley portion 621 of the first motor pulley 620. A first transmission belt 630 is wound between the pulley portion 611 of the first pulley 610 and the pulley portion 621 of the first motor pulley 620.

When the first motor pulley 620 is fixed to the motor shaft 130 by the switching operation of the first clutch mechanism 800, the rotation of the drive motor 100 is transmitted to the rotating wing shaft 400 through the first transmission mechanism 600. At this time, the rotation of the drive motor 100 is decelerated according to the reduction ratio determined by the ratio of the outer diameters of the pulley portion 611 and the pulley portion 621.

2 and 6(b), the second transmission mechanism 700 includes: a second pulley 710, a second motor pulley 720, and a second transmission belt 730 connecting the second pulley 710 and the second motor pulley 720 .

The second pulley 710 has a disc shape, and is fixed to the lower portion of the hydrofoil shaft 300 exposed from the dehydration barrel shaft 200 below the outer tub 20. The second pulley 710 is located above the first pulley 610 in parallel with the first pulley 610. A groove portion 711 in which the second transmission belt 730 is wound is formed on the outer peripheral portion of the second pulley 710. In addition, the second pulley 710 is formed with a plurality of through holes 712 having a predetermined interval in the circumferential direction. The through hole 712 has approximately the same shape and approximately the same size as the engagement recess 613.

The second motor pulley 720 has a dish shape with an open lower surface, and is fixed above the first motor pulley 620 of the motor shaft 130. A groove portion 721 in which the second transmission belt 730 is wound is formed on the outer peripheral portion of the second motor pulley 720.

The outer diameter of the second pulley 710 is equal to the outer diameter of the second motor pulley 720. A second transmission belt 730 is wound between the second pulley 710 and the second motor pulley 720.

Through the second transmission mechanism 700, the rotation of the drive motor 100 is transmitted to the hydrofoil shaft 300 at the same speed.

The first clutch mechanism part 800 switches between a double-wing drive mode and a single-wing drive mode by making the rotation energy of the motor shaft 130 or not be transmitted to the rotary wing shaft 400 via the first transmission mechanism part 600, wherein the double-wing drive mode is The rotation of the drive motor 100 is transmitted to the drive mode of both the rotary wing 30 and the hydrofoil 40, and the single-wing drive mode is a drive mode in which the rotation of the drive motor 100 is not transmitted to the rotary wing 30 but is transmitted to the hydrofoil 40.

FIG. 7 is a longitudinal cross-sectional view of the drive unit 60 showing the periphery of the first clutch mechanism 800. FIG. 8 is a perspective view of the first clutch mechanism 800.

7 and 8, the first clutch mechanism 800 includes a clutch body 810, a spring 820, a clutch lever 830, a lever support portion 840, a lever driving device 850 and a mounting plate 860.

The clutch body 810 is arranged on the motor shaft 130 so as to be located between the first motor pulley 620 and the second motor pulley 720. The clutch body 810 includes a clutch part 811, a surrounding part 812 and a rolling bearing 813. The clutch portion 811 has a substantially cylindrical shape, and is arranged such that the outer diameter of the lower portion 811a is larger than the outer diameter of the upper portion 811b. An engagement recess 814 having an inner diameter approximately equal to the outer diameter of the hub 622 of the first motor pulley 620 is formed in the lower portion 811a. The first spline 815 is formed on the inner peripheral surface of the engaging recess 814 over the entire circumference. Corresponding to the first spline 815, a spline 623 is formed over the entire circumference on the outer peripheral surface of the boss portion of the first pulley 620.

The second spline 816 is formed over the entire circumference on the inner peripheral surface of the upper side portion 811b. Corresponding to the second spline 816, at a position between the first motor pulley 620 and the second motor pulley 720 on the motor shaft 130, a spline 131 is formed on the outer peripheral surface over the entire circumference. The vertical size of the spline 131 is larger than the vertical size of the second spline 816.

The second spline 816 of the clutch part 811 is engaged with the spline 131 of the motor shaft 130. By this engagement, the clutch part 811 is movable in the axial direction of the motor shaft 130 with respect to the motor shaft 130 and can be combined with the motor shaft 130. The state of rotation.

The surrounding portion 812 is formed in an annular shape and surrounds the clutch portion 811 via a rolling bearing 813 such that the clutch portion 811 is rotatable. With the rolling bearing 813, the clutch portion 811 rotates smoothly with respect to the surrounding portion 812. In the surrounding portion 812, a pair of shaft portions 817 whose outer peripheral surfaces face away from each other are formed along the direction in which the dehydration tub shaft 200 and the motor shaft 130 are arranged (hereinafter referred to as the shaft arrangement direction).

The clutch body 810 moves to the engagement position where the first spline 815 of the clutch portion 811 engages with the spline 623 of the hub portion 622 of the first motor pulley 620, thereby fixing the first motor pulley 620 to the motor shaft 130 to transmit the rotation of the motor shaft 130 to the motion of the first motor pulley 620. In addition, the clutch body 810 moves to the release position where the engagement between the first spline 815 and the spline 623 is released, thereby releasing the fixation of the first motor pulley 620 to the motor shaft 130 so that the rotation of the motor shaft 130 is not transmitted. Give the first motor the action of the wheel 620. When the clutch body 810 is at the release position, almost the entire clutch body 810 is accommodated inside the second motor pulley 720.

The spring 820 is arranged between the clutch body 810 and the second motor pulley 720 and urges the clutch body 810 to the first motor pulley 620 side, that is, the engagement position side.

The clutch lever 830, the lever support portion 840, the lever driving device 850, and the mounting plate 860 are arranged on the clutch body 810 along a direction orthogonal to the axis arrangement direction.

The clutch lever 830 includes a lever main body 831, a pair of arms 832, and an operating plate 833. The rod main body 831 has a rectangular shape that is long in the axis arrangement direction. The pair of arms 832 extend from the lever main body 831 to the clutch body 810, and the receiving portion 832a provided at the tip portion receives the shaft portion 817 of the surrounding portion 812 from below. The operating piece 833 is provided on the side of the lever main body 831 opposite to the arm 832 and protrudes toward the lever driving device 850 side.

The lever support portion 840 includes a pair of support pieces 841 extending from the mounting plate 860 and a support shaft 842 that is fixed to the top end of the pair of support pieces 841 and penetrates the lever body 831, and the clutch lever 830 is rotatable about the support shaft 842 Way to support.

The rod driving device 850 includes a torque motor 851 and a cam 852. The torque motor 851 generates torque, which is power for operating the clutch body 810. The cam 52 has a disk shape, and is rotated around a horizontal axis by the torque of the torque motor 851. On the front of the cam 852, a circular cam groove 853 is formed by two layers of ribs on the inner and outer sides. The center of the cam groove 853 is shifted from the center of rotation of the cam 852. The operating piece 833 of the clutch lever 830 is accommodated in the cam groove 853.

The rod driving device 850 is fixed to the mounting plate 860. The mounting plate 860 is fixed to the mounting table 510 of the bearing unit 500. Thereby, the torque motor 851 which is the rod drive device 850 is arranged in parallel with the motor shaft 130 below the tub 20.

FIG. 9(a) is a diagram schematically showing the state where the first clutch mechanism unit 800 is switched to the single-wing drive mode, and FIG. 9(b) is a diagram schematically showing the state where the first clutch mechanism unit 800 is switched to the double-wing drive mode. Diagram of the state of the drive mode.

When the cam 852 is rotated by the operation of the torque motor 851, as shown in FIGS. 9(a) and (b), the operating plate 833 of the clutch lever 830 is guided by the cam groove 853 to rotate downward or upward, and the clutch lever 830 The arm 832 rotates in a direction opposite to the operating piece 833, that is, upward or downward.

In the single-wing drive mode, as shown in FIG. 9(a), the cam groove 853 is at the lowest position, the operating piece 833 is pressed down, and the top end of the arm 832, that is, the receiving portion 832a, is pushed up. As a result, the clutch body 810 is pushed up to the release position against the force of the spring 820, and the first spline 815 of the clutch body 810 is in a disengaged state from the spline 623 of the first motor pulley 620, and the first motor belt The wheel 620 is not fixed to the motor shaft 130. The rotation of the motor shaft 130 is transmitted to the second motor pulley 720, and is transmitted to the hydrofoil shaft 300 that is the hydrofoil 40, but is not transmitted to the first motor pulley 620, and is not transmitted to the rotating wing shaft 400 that is the rotor wing 30.

On the other hand, in the double-wing drive mode, as shown in FIG. 9(b), the cam groove 853 is at the uppermost position, the operating piece 833 is pushed up, and the receiving portion 832a of the arm 832 is pushed down. Thereby, the clutch body 810 is pressed down to the engagement position by the force of the spring 820, the first spline 815 is engaged with the spline 623, and the first motor pulley 620 is fixed to the motor shaft 130. The rotation of the motor shaft 130 is transmitted to both the second motor pulley 720 and the first motor pulley 620, and is transmitted to both the hydrofoil shaft 300, that is, the hydrofoil 40, and the rotating wing shaft 400, that is the rotor 30.

FIG. 10 is a longitudinal cross-sectional view of the drive unit 60 showing the periphery of the second clutch mechanism part 900. FIG. 11 is a bottom view of the driving unit 60 showing the periphery of the second clutch mechanism part 900. FIG. 12 is a bottom view of the drive unit 60 showing the periphery of the second clutch mechanism part 900 in a state where the first pulley 610, the second pulley 710, and the clutch mechanism 910 are removed. FIG. 13(a) is a perspective view of the clutch mechanism 910 turned upside down. FIG. 13(b) is a perspective view of the clutch body 950, and FIG. 13(c) is a perspective view of the clutch support portion 970 turned upside down.

It should be noted that, for convenience of explanation, FIG. 11 shows a state in which the dewatering bucket shaft 200, the lifting wing shaft 300, the rotating wing shaft 400, and the clutch body 950 are cut at a position higher than the second pulley 710. In FIG. 12, for convenience of description, the bearing box 520 only shows its trunk in a cross-section.

Referring to FIGS. 10 to 13( c ), the second clutch mechanism part 900 includes a clutch mechanism 910 and a driving device 920 for driving the clutch mechanism 910. The clutch mechanism 910 and the drive device 920 switch between the integrated drive mode and the independent drive mode. The integrated drive mode is capable of restricting the rotation of the rotating wing shaft 400 and the lifting wing shaft 300 relative to the dehydration bucket shaft 200. The rotating wing 30 and the water-lifting wing 40 rotate integrally with the washing and dewatering bucket 22. The independent driving mode is to release the rotation restriction of the rotating wing shaft 400 and the water-lifting wing shaft 300 with respect to the dewatering bucket shaft 200 to make the rotating wing 30 and the water-pumping A driving mode in which the wing 40 rotates relative to the washing and dehydrating tub 22.

It should be noted that, in this embodiment, the upper end of the hydrofoil shaft 300 is fixed to the hydrofoil 40 and the upper end of the rotary wing shaft 400 is fixed to the rotary wing 30 located higher than the hydrofoil 40 Structurally, the rotating wing shaft 400 is located on the inner side of the lifting hydrofoil shaft 300. As a result, there is a hydrofoil shaft 300 between the dewatering bucket shaft 200 and the rotating wing shaft 400, so it is difficult to realize a structure that restricts only the rotation of the rotating wing shaft 400 with respect to the dewatering bucket shaft 200. Thereby, the clutch mechanism 910 is set so that when the rotation of the rotary wing shaft 400 with respect to the dehydration tub shaft 200 is restricted in the integrated drive mode, the rotation of the hydrofoil shaft 300 is also restricted.

Furthermore, the second clutch mechanism part 900 includes a brake mechanism 930 for braking the dehydration tub shaft 200 and an opening and closing mechanism 940 for opening and closing the drain valve 70. The driving device 920 is used to drive the braking mechanism 930 and the opening and closing mechanism 940.

The clutch mechanism 910 includes a clutch body 950, a moving mechanism 960, and a clutch support portion 970.

The clutch supporting portion 970 has a cylindrical shape and is fixed to the bottom portion 521 of the bearing housing 520. A ring-shaped uneven portion 971 is formed on the lower surface of the clutch support portion 970.

The clutch body 950 is arranged between the clutch support portion 970 and the second pulley 710 on the dehydration tub shaft 200. The clutch body 950 is formed in a cylindrical shape whose upper end portion has an outer diameter larger than that of the other portions, and has a hub portion 951 inside. A plurality of engagement protrusions 952 protruding downward, that is, to the second pulley 710 side, are formed at the lower end of the clutch body 950 at predetermined intervals in the circumferential direction. The engagement protrusion 952 has substantially the same cross-sectional shape as the engagement recess 613 and the through hole 712. In addition, the upper end portion of the clutch body 950 is formed with an annular uneven portion 953 that meshes with the uneven portion 971 of the clutch support portion 970 on the inner peripheral surface over the entire circumference. Furthermore, a spline 954 is formed on the inner peripheral surface of the hub 951 over the entire circumference.

A spline 214 is formed on the outer peripheral surface at a position between the bearing box 520 and the second pulley 710 on the dehydration tub shaft 200 over the entire circumference. The vertical dimension of the spline 214 is larger than the vertical dimension of the spline 954 of the hub 951.

The spline 954 of the hub 951 is engaged with the spline 214 of the dehydration barrel shaft 200. By this engagement, the clutch body 950 is movable relative to the dehydration barrel shaft 200 in the axial direction of the dehydration barrel shaft 200 and can be connected to the dehydration barrel shaft 200. The state of 200 rotating together.

The moving mechanism 960 moves the clutch body 950 between a restriction position and a release position, where the restriction position is where the engagement protrusion 952 is engaged with the engagement recess 613 and the rotation of the rotary wing shaft 400 with respect to the dehydration tub shaft 200 is restricted. The position and the release position are the positions where the engagement protrusion 952 is separated from the engagement recess 613 and the rotation restriction of the rotary wing shaft 400 with respect to the dehydration tub shaft 200 is released. When the clutch body 950 moves to the release position, the uneven portion 953 of the clutch body 950 meshes with the uneven portion 971 of the clutch support portion 970, and the dehydration tub shaft 200 is fixed to the bearing housing 520 via the clutch support portion 970 and becomes unable to rotate.

The moving mechanism 960 includes a first spring 961, a first rod 962, a rod support portion 963, a relay wire 964, a second rod 965, a rod shaft 966, a second spring 967, and a connecting body 968.

The first spring 961 is arranged between the clutch body 950 and the rolling bearing 532 of the bearing housing 520 and urges the clutch body 950 to the second pulley 710 side, that is, the restriction position side.

The first rod 962 includes a substantially semicircular arc-shaped head 981 along the outer peripheral surface of the portion of the clutch body 950 lower than the upper end, and a rod 982 extending upward from the head 981. At the tip portions on both sides of the head 981, pressing portions 983 that contact the upper end portion of the clutch body 950 from below and press the upper end portion upward are formed.

The lever support portion 963 includes a pair of support pieces 963a integrally formed with the clutch support portion 970 and a support shaft 963b that is fixed to the top end of the pair of support pieces 963a and penetrates the lower end of the lever portion 982. The first lever 962 can be The support shaft 963b is supported in a center-rotating manner.

The relay wire 964 connects the first rod 962 and the second rod 965. A spring 964a is integrally formed at the intermediate position of the relay wire 964. One end of the relay wire 964 is fitted to the upper end of the rod 982 of the first rod 962.

The rod shaft 966 is supported by the support portion 523 of the bearing box 520 and extends downward. A second rod 965 is rotatably mounted on the lower part of the rod shaft 966. The second rod 965 is formed with an arm portion 965 a extending in a direction away from the dehydration tub shaft 200. A mounting pin 965b is formed in the middle of the arm portion 965a, and the other end of the relay wire 964 is mounted on the mounting pin 965b. It should be noted that the rod shaft 966 is also used for the braking mechanism 930.

The second spring 967 is a coil spring and is assembled to the rod shaft 966 to urge the second rod 965 so that the second rod 965 rotates in the direction in which the rod portion 982 of the first rod 962 is pulled.

The connecting body 968 is arranged between the driving device 920 and the drain valve 70, and has a first connecting portion 968a and a second connecting portion 968b. The arm portion 965a of the second lever 965 is connected to the first connecting portion 968a. In addition, in the connection body 968, a first attachment portion 968c is provided at the end on the drive device 920 side, and a second attachment portion 968d is provided at the end on the drain valve 70 side.

The brake mechanism 930 includes a brake band 931, a brake lever 932, and a spring 933. A brake shoe 934 is attached to the back of the brake band 931. The brake band 931 is wound around the brake drum 201 of the dehydration drum shaft 200 in the bearing box 520. In the bearing housing 520, two holes 524 are formed on the support portion 523 side. One end of the brake band 931 extends from a hole 524 to the outside of the bearing box 520 and is fixed to the bearing box 520 by screws 935. In addition, the other end of the brake band 931 extends from the other hole 524 to the outside of the bearing box 520 and is fixed to the brake lever 932 by a pin 936.

The brake lever 932 is rotatably assembled to the upper part of the lever shaft 966. The brake lever 932 is formed with an arm portion 932 a extending in a direction away from the dehydration tub shaft 200. The arm portion 932a is connected to the second connecting portion 968b of the connecting body 968.

The spring 933 is a coil spring, and is attached to the lever shaft 966, and urges the brake lever 932 so that the brake lever 932 rotates in the direction in which the brake band 931 is pulled. In this state, since the brake shoe 934 of the brake band 931 is in contact with the brake drum 201, the rotation of the brake drum 201 is restrained.

The opening and closing mechanism includes a working body 941 and a connecting rod 942. The working body 941 is inserted into the valve chamber 72 of the drain valve 70 and is connected to the valve body 73 movably arranged in the valve chamber 72. One end of the connecting rod 942 is connected to the working body 941, and the other end is assembled to the second mounting portion 968d of the connecting body 968. The working body 941 and the connecting rod 942 move toward or away from the drain valve 70, whereby the valve body 73 closes or opens the drain port 74 connected to the drain port 20a.

The driving device 920 includes a torque motor 921, a cam 922, and a connecting wire 923. The torque motor 921 generates torque, which is power for operating the moving mechanism 960 of the clutch mechanism 910, the braking mechanism 930, and the opening and closing mechanism 940. The cam 922 has a disk shape and rotates around a horizontal axis by the torque of the torque motor 921. On the front surface of the cam 922, a mounting portion 924 is provided on the outer peripheral edge portion. One end of the connecting wire 923 is mounted on the mounting portion 924, and the other end is mounted on the first mounting portion 968c of the connecting body 968.

In the independent driving mode, as shown in FIGS. 7 and 8, the rod 982 of the first rod 962 is pulled by the second rod 965 via the relay wire 964, and the head 981 of the first rod 962 is pushed up. state. The pressing portion 983 of the head 981 is in contact with the clutch body 950 to push the clutch body 950 upward, and the uneven portion 953 of the clutch body 950 meshes with the uneven portion 971 of the clutch support portion 970. As a result, the dewatering tub shaft 200 is fixed to the bearing box 520 and cannot be rotated, and the rotating wing shaft 400 and the lifting wing shaft 300 can rotate independently of the dewatering tub shaft 200. That is, the rotating blade 30 and the lifting blade 40 can be rotated independently of the washing and dehydrating tub 22.

In the independent driving mode, the brake shoe 934 of the brake band 931 contacts the brake drum 201, and the dehydration tub shaft 200, that is, the washing and dehydration tub 22 is stopped by the braking mechanism 930. In addition, the drain valve 70 is in a state where the valve body 73 is closed by the opening and closing mechanism 940.

It should be noted that in FIGS. 11 and 13(a), the spring 964a of the relay wire 964 is depicted in a natural length state, but in fact, in the independent driving mode, the spring 964a is in a slightly extended state. As a result, the clutch body 950 is applied with a pressing force from the pressing portion 983, so that the

uneven portions

953 and 971 can be firmly engaged with each other.

When switching from the independent driving mode to the integrated driving mode, the cam 922 is rotated by the operation of the torque motor 921, and the connecting body 968 is pulled by the connecting wire 923 to move to the driving device 920 side. As a result, the second rod 965 rotates toward the driving device 920 against the force of the second spring 967, the first rod 962 is pushed by the relay wire 964 to rotate, and its head 981 is pressed down. As shown by the broken line in FIG. 7, the clutch body 950 is pressed down by the urging force of the first spring 961, the engagement between the concave and

convex portions

953 and 971 is released, and the engagement protrusion 952 of the clutch body 950 penetrates the second pulley 710 The through hole 712 is engaged with the engagement recess 613 of the first pulley 610. As a result, the rotary wing shaft 400 and the hydrofoil shaft 300 are fixed to the dewatering bucket shaft 200, and the dewatering bucket shaft 200, the rotary wing shaft 400, and the hydrofoil shaft 300 can rotate integrally. That is, it is in a state where the washing and dewatering tub 22, the rotary blade 30, and the hydrofoil 40 can rotate integrally.

In the integrated driving mode, when the connecting body 968 moves to the driving device 920 side, the brake lever 932 resists the applied force of the spring 933 and rotates to the driving device 920 side, the brake band 931 relaxes, and the brake shoe 934 leaves the brake drum. 201. As a result, the spin-drying tub shaft 200, that is, the washing and spin-drying tub 22, is in a state that is not stopped by the brake mechanism 930. In addition, in the opening and closing mechanism 940, the working body 941 and the connecting rod 942 move in a direction away from the drain valve 70. As a result, the valve body 73 of the drain valve 70 is opened.

The fully automatic washing machine 1 performs washing operations in various operation courses. In the washing operation course, in addition to the standard course of washing standard laundry, it also includes the delicate course of washing delicate laundry. In the washing operation, the washing process, the intermediate dehydration process, the rinsing process, and the final dehydration process are sequentially performed.

During the cleaning process, the driving mode is switched to the independent driving mode through the second clutch mechanism part 900. As a result, the washing and dewatering tub 22 is in a fixed non-rotating state, and the rotating blade 30 and the lifting blade 40 are in a state that can rotate with respect to the washing and dewatering tub 22. It should be noted that the switch to the independent drive mode is performed at the end of the final rinsing process in the last washing operation. At this time, the driving motor 100 is stopped by the brake mechanism 930, and the inertially rotating washing and dehydrating tub 22 is braked.

Further, in the washing process, when the washing course is a standard course, the driving mode is switched to the double-wing driving mode through the first clutch mechanism part 800. As a result, the rotation of the drive motor 100 is transmitted to both the rotary blade 30 and the hydrofoil 40.

In a state where the washing and dehydrating tub 22 contains detergent-containing water, the drive motor 100 rotates clockwise and counterclockwise at intervals. Thereby, the rotating blade 30 and the lifting blade 40 rotate clockwise and counterclockwise at intervals. At this time, the hydrofoil 40 rotates at a higher speed than the rotary wing 30.

The rotation of the rotary wing 30 generates a vortex in the washing and dewatering tub 22. The laundry in the washing and dewatering tub 22 is stirred or rubbed against each other by the action of the vortex to be washed. In addition, the laundry is also washed by being rubbed by the blades 31 of the rotating wing 24.

When the hydrofoil 40 rotates, the water between the washing and dehydrating tub 22 and the outer tub 20 is sucked into the recessed portion 24 through the water passage 22b. The sucked water is pushed out by the hydrofoil 40 to be sent to each pumping channel 26, flows through each pumping channel 26, and is discharged into the washing and dewatering tub 22 from each discharge port 25a. The laundry on the water surface side in the washing and dehydrating tub 22 is knocked and washed by the falling water. It should be noted that in the cleaning process, the cleaning performance of the detergent is also exerted.

In this way, the standard laundry is washed well by the action of the vortex caused by the rotation of the rotor blade 30 and the circulation of water caused by the rotation of the hydrofoil 40.

On the other hand, during the washing process, when the washing course is a delicate course, the driving mode is switched to the single-wing driving mode through the first clutch mechanism 800. Thus, the rotation of the drive motor 100 is not transmitted to the rotor blade 30 but is transmitted to the hydrofoil 40.

In a state where water containing detergent is stored in the washing and dehydrating tub 22, the motor 100 is driven to rotate. As a result, the hydrofoil 40 rotates in a state where the rotor blade 30 is stopped. At this time, the drive motor 100 and the hydrofoil 40 may continuously rotate in either the clockwise direction and the counterclockwise direction, or may rotate intermittently. When the drive motor 100 and the hydrofoil 40 rotate intermittently, they may rotate clockwise and counterclockwise intermittently.

The laundry in the washing and dehydrating tub 22 is washed by being hit by the detergent-containing water discharged from the discharge port 25a of the pumping channel 26. In addition, a water flow from the water surface side to the bottom side is generated in the washing and dewatering tub 22, and the water passes through the laundry, so that the laundry is washed. At this time, the rotor blade 30 is not rotationally driven by the drive motor 100, so eddy currents are not generated, and it is difficult to generate friction between the laundry. In addition, it is difficult for the laundry to be rubbed by the blade 31 of the rotary wing 30.

Among them, a partition plate 50 is sandwiched between the rotary wing 30 and the lifting wing 40. Therefore, when the hydrofoil 40 rotates, the partition plate 50 can cut off the force that is transmitted due to the viscosity of the water between the hydrofoil 40 and the rotor 30 to rotate the rotor 30. In this way, it is possible to prevent a situation in which the rotor blade 30 rotates with the rotation of the hydrofoil 40.

In addition, the outer peripheral edge portion 50a of the partition plate 50 overlaps the outer peripheral edge portion 22c of the recessed portion 24 on the bottom wall of the washing and dewatering tub 22. Therefore, when the hydrofoil 40 rotates, the water pushed out from the blade 47 hardly leaks to the recessed portion 24. Above. Furthermore, since the outer peripheral edge portion 50a of the partition plate 50 is in a state of pressing the outer peripheral edge portion 22c of the recessed portion 24, it is more difficult for water to leak from the recessed portion 24. As a result, water can be efficiently supplied from the recessed portion 24 to the water pumping passage 26, and the amount of water supplied to the water pumping passage 26 can be increased.

Furthermore, since the partition plate 50 and the water lifter blade 40 are provided with water passage holes 53, 45, the water in the washing and dehydration tank 22 can be taken into the part of the blade 47 of the water lifter blade through these water passage holes 53, 45. . As a result, the water supply amount of the hydrofoil 40 to the hoisting water passage 26 can be further increased.

Furthermore, the upward movement of the central portion of the partition plate 50 is restricted by the large diameter portion 33 a of the fixed boss 33 of the rotating wing 30. Therefore, even if it is pushed upward by the water pressure generated by the rotation of the hydrofoil 40, the partition plate 50 is unlikely to float or deform.

It should be noted that by performing intermittent rotation of the rotor blade for a short time, the circulating water can be efficiently brought into contact with the laundry while moving the laundry little by little.

In this way, by the circulation of water caused by the rotation of the hydrofoil 40, the delicate laundry is washed well in such a way that damage to the cloth is suppressed.

In the rinsing process, similar to the washing process, when the washing course is a standard course, the rotary wing 30 and the hydrofoil 40 rotate through the action of the vortex caused by the rotation of the rotary wing 30 and the rotation of the hydrofoil 40 The circulation of the water is discharged, and the standard laundry is rinsed well. In addition, when the washing course is an exquisite course, only the hydrofoil 40 rotates, and by the circulation of water caused by the rotation of the hydrofoil 40, the exquisite laundry is well cleaned in such a way that damage to the cloth is suppressed.

It should be noted that during the rinsing process, immediately after the intermediate dehydration process is completed, the switch to the independent driving mode is performed, and the driving motor 100 is stopped by the brake mechanism 930, and the inertially rotating washing and dehydrating tub 22 is braked.

During the intermediate dehydration process and the final dehydration process, the driving mode is switched to the integrated driving mode through the second clutch mechanism part 900. As a result, the dehydration bucket shaft 200, the hydrofoil shaft 300, and the rotary wing shaft 400 are combined, and the washing and dehydration bucket 22, the rotary wing 30, and the hydrofoil 40 can rotate integrally. In addition, by the first clutch mechanism 800, the driving mode is switched to the single-wing driving mode. Thereby, the rotation of the drive motor 100 is not transmitted to the rotary wing shaft 400 via the first transmission mechanism portion 600 but is transmitted to the hydrofoil shaft 300 via the second transmission mechanism portion 700.

When switching to the integrated driving mode, the drain valve 70 is opened by the opening and closing mechanism 940. As a result, water is drained from the washing and dehydrating tub 22 and the outer tub 20.

When draining water from the washing and dewatering tub 22, the fine foreign matter is discharged to the upper surface of the partition plate 50 through the drain hole 32 of the rotating wing 30 together with water. The foreign matter is collected in the recess 52 in the center of the partition plate 50 together with water, and is discharged to the upper surface of the hydrofoil 40 through the plurality of water passage holes 53. At this time, since the water passage hole 53 of the partition plate 50 is larger than the water discharge hole 32, foreign matter easily passes through the water passage hole 53. In addition, since the central part of the partition plate 50 is provided with a ring-shaped protrusion 51a as the upper end of the boss part 51, the protrusion 51a can prevent foreign matter flowing to the central part and prevent foreign matter from entering the boss part. 51 and the fixed boss 33 of the rotating wing 30.

The foreign matter discharged to the upper surface of the hydrofoil 40 together with water passes through a plurality of water passage holes 45 formed in the hydrofoil 40 and is discharged below the hydrofoil 40 from the water passage 22b of the bottom wall of the washing and dewatering tub 22 to the bottom wall. And the bottom wall of the outer tub 20. At this time, since the water passage hole 45 of the hydrofoil 40 is larger than the water discharge hole 32, it is easy for foreign matter to pass through the water passage hole 45.

After the draining of the washing and dehydrating tub 22 and the outer tub 20 is completed, the driving motor 100 rotates in one direction at a high speed. Since the speed increase or decrease does not occur in the second transmission mechanism part 700, the hydrofoil shaft 300, the dehydration bucket shaft 200 and the rotary wing shaft 400 integrated with the hydrofoil shaft 300 rotate at the same speed as the drive motor 100. As a result, the washing and dewatering tub 22, the rotating blade 30, and the lifting blade 40 rotate integrally at a high speed at the same speed as the drive motor 100. The laundry is dehydrated by the centrifugal force generated in the washing and dehydrating tub 22.

In the refined course, compared with the standard course, the rotation speed of the drive motor 100 during dehydration can be reduced or the dehydration time can be shortened so that the laundry is not easily damaged.

It should be noted that, as a washing course, a fabric damage reduction course can be set in which standard laundry is washed while suppressing fabric damage. Under the fabric damage reduction process, the first clutch mechanism 800 is used to switch between the double-wing drive mode and the single-wing drive mode at regular intervals during the washing process and the rinsing process. As a result, a period during which both the rotor blade 30 and the hydrofoil 40 rotate and a period during which only the hydrofoil 40 rotates are generated.

As described above, according to the present embodiment, delicate laundry can be washed in the following manner: the drive unit 60 does not rotate the rotor blade 30 but only the hydrofoil 40 rotates, and the water is discharged from the outlet 25a while the water is being washed and dehydrated. Circulate between the barrel 22 and the pumping channel 26. Therefore, it is possible to suppress fabric damage of delicate laundry caused by washing.

In addition, since the partition plate 50 is provided between the rotor blade 30 and the hydrofoil 40, it is possible to prevent the rotation of the hydrofoil 40 from being transmitted to the rotor blade due to the viscosity of the water between the hydrofoil 40 and the rotor blade 30 when the hydrofoil 40 rotates. 30 and the rotating wing 30 rotates together.

In addition, according to the present embodiment, the outer peripheral edge portion 50a of the partition plate 50 overlaps with the outer peripheral edge portion 22c of the recessed portion 24 on the bottom wall of the washing and dehydrating tub 22 from above, so when the hydrofoil 40 rotates, it is pushed out from the blade 47 It is difficult for the water to leak above the recessed portion 24. As a result, water can be efficiently supplied from the recessed portion 24 to the water pumping passage 26, and the amount of water supplied to the water pumping passage 26 can be increased.

Further, according to the present embodiment, since the upward movement of the central portion of the partition plate 50 is restricted by the large diameter portion 33a of the fixed boss 33 of the rotary wing 30, the partition plate 50 is less likely to be generated when the hydrofoil 40 rotates. Floating or deformed under the water pressure.

Further, according to the present embodiment, since the annular protrusion 51a is provided at the center of the partition plate 50, when draining water from the washing and dehydrating tub 22, etc., the protrusion 51a can prevent the flow to the separator. The partition plate 50 contains foreign matter that will enter the hole 51 b of the boss portion 51. As a result, it is possible to prevent foreign matter from getting stuck between the boss portion 51 and the fixed boss 33 of the rotating wing 30 and obstructing the rotation of the rotating wing 30.

Furthermore, according to the present embodiment, since the partition plate 50 is provided with a plurality of water passage holes 53 larger than the water discharge holes 32 of the rotary wing 30, it is possible to pass through when draining water from the washing and dewatering tub 22, etc. The foreign matter discharged to the upper surface of the partition plate 50 from the water discharge hole 32 of the rotor blade 30 is discharged through the water passage hole 53. As a result, it is difficult for foreign matter to accumulate on the upper surface of the partition plate 50.

Furthermore, according to the present embodiment, since the lift blade 40 is provided with a plurality of water passage holes 45 larger than the water discharge holes 32 of the rotary blade 30, it is possible to divide the passage when draining water from the washing and dewatering tub 22, etc. The foreign matter discharged from the water passage hole 53 of the plate 50 to the upper surface of the hydrofoil 40 is discharged through the water passage hole 45. This prevents foreign matter from accumulating on the upper surface of the hydrofoil 40.

As mentioned above, the embodiment of the present invention has been described, but the present invention is not limited to the above-mentioned embodiment or the like at all. In addition, the embodiment of the present invention can also be modified in various ways other than the above.

For example, in the above-described embodiment, the partition plate 50 is formed in a dish shape that gradually becomes deeper from the outer peripheral edge portion 50a toward the center portion. However, the shape of the partition plate 50 is not limited to the above-mentioned shape. For example, the partition plate 50 may be formed in a dish shape that becomes deeper from the outer peripheral edge portion 50a toward the center portion by tilting the bottom surface thereof. Alternatively, the partition plate 50 may be formed in a flat disc shape instead of a dish shape.

In addition, in the above-described embodiment, the boss portion 51 of the partition plate 50 is arranged at the position of the fixed boss 33 of the rotary wing 30 into which the rotary wing shaft 400 is inserted. However, the boss portion 51 may be arranged at a position lower than the fixed boss 33. In this case, only the rotary wing shaft 400 penetrates the hole 51 b of the boss portion 51. In addition, in this case, it is also possible to adopt a structure in which the fixed boss 33 becomes the restricting portion and its bottom surface is in contact with the upper end of the boss portion 51, and it is also possible to adopt a configuration in which the rotary wing shaft 400 is provided with, for example, the boss portion 51 The flange part abutting on the upper end serves as the structure of the restricting part.

Furthermore, in the above-mentioned embodiment, the hole diameters of the water passing holes 45 of the hydrofoil 40 and the water passing holes 53 of the partition plate 50 are larger than the hole diameters of the water discharge holes 32 of the rotating blade 30. However, the hole diameter of these

water passing holes

45 and 53 may be equal to the hole diameter of the water discharge hole 32.

Furthermore, in the above-mentioned embodiment, the hydrofoil shaft 300 does not contain a speed reduction mechanism or a speed increase mechanism, and is constituted by a single shaft. However, the hydrofoil shaft 300 may also adopt a structure including an input shaft, an output shaft, and a speed reduction mechanism or speed increasing mechanism, wherein the input shaft is fixed to the second pulley 710, the output shaft is fixed to the hydrofoil 40, and the speed reduction mechanism or speed increasing mechanism The mechanism is arranged between the input shaft and the output shaft.

Furthermore, in the above-mentioned embodiment, the first clutch mechanism 800 is provided on the side of the motor shaft 130. However, the first clutch mechanism 800 may be provided on the side of the rotary wing shaft 400. In this case, the first pulley 610 is rotatable with respect to the rotating wing shaft 400, and the clutch body 810 is arranged on the rotating wing shaft 400. In this structure, when switching to the single-wing drive mode, the first pulley 610 rotates idly and the rotating wing shaft 400 does not rotate, and when switching to the double-wing drive mode, the first pulley 610 rotates together with the rotating wing shaft 400.

Further, in the above embodiment, the second motor pulley 720 is fixed to the motor shaft 130, and the rotation of the motor shaft 130 is always transmitted to the second motor pulley 720. However, it is also possible that a third clutch mechanism part having the same structure as the first clutch mechanism part 800 is provided between the motor shaft 130 and the second motor pulley 720. Alternatively, the third clutch mechanism part may also be provided between the second pulley 710 and the hydrofoil shaft 300. In this case, the third clutch mechanism can be used to switch between a state in which the rotation of the motor shaft 130 is transmitted to the hydrofoil shaft 300 and a state in which the rotation of the motor shaft 130 is not transmitted. When the third clutch mechanism is provided in this way, the first clutch mechanism 800 is used to switch the rotation of the motor shaft 130 to the rotary wing shaft 400, and the third clutch mechanism is used to switch the motor shaft 130. The rotation of φ is not transmitted to the switching of the hydrofoil shaft 300, thereby achieving a drive mode in which the hydrofoil shaft 300, that is, the hydrofoil 40, does not rotate, but the rotating wing shaft 400, that is, the rotor wing 30 rotates.

It should be noted that in the case where the third clutch mechanism part is provided as described above, it may also be switched to the hydrofoil shaft 300 when the second clutch mechanism part 900 is switched to the integrated drive mode during the dehydration process. A driving mode in which the rotating wing shaft 400 rotates without rotating.

Further, as long as the first clutch mechanism 800 can switch between the single-wing drive mode and the double-wing drive mode, a structure other than the structure listed in the above-mentioned embodiment may also be adopted. Similarly, as long as the second clutch mechanism portion 900, that is, the clutch mechanism 910 and the driving device 920, can switch between the integrated drive mode and the independent drive mode, a structure other than the structure listed in the above embodiment may also be adopted.

Furthermore, in the above-mentioned embodiment, the second clutch mechanism part 900 adopts a structure in which the driving device 920 not only drives the moving mechanism 960 but also drives the opening and closing mechanism 940 that opens and closes the drain valve 70. However, it is also possible to adopt a structure in which the second clutch mechanism portion 900 does not include the opening and closing mechanism 940 and adopt a structure in which the opening and closing mechanism 940 is driven by a driving source different from the driving device 920.

Furthermore, in the above-mentioned embodiment, the discharge port 25a is provided in the upper part of the pumping channel 26, but it may be provided in other positions, such as a center part. In addition, the discharge port 25a may have any shape.

Further, in the above-mentioned embodiment, an example in which the present invention is applied to a fully automatic washing machine 1 not equipped with a clothes drying function is shown. However, the present invention can also be applied to a fully automatic washer-dryer equipped with a clothes drying function.

In addition, the embodiments of the present invention can be appropriately modified in various ways within the scope of the technical idea shown in the claims.

Claims

A washing machine, characterized in that it has:

The washing and dewatering barrel is arranged in the outer barrel in a rotatable manner;

The rotating wing is rotatably arranged at the bottom of the washing and dewatering bucket;

The hydrofoil is rotatably arranged between the bottom wall of the washing and dewatering bucket and the rotating wing;

The water lifting path is provided on the side wall of the washing and dewatering bucket for the water supplied by the rotation of the water lifting wing to flow through;

The spit outlet is for the water flowing through the pumping channel to be spit out into the washing and dewatering bucket;

A driving part capable of driving the hydrofoil without driving the rotating wing; and

A partition plate separates the rotary wing and the water-lifting wing.
The washing machine according to claim 1, wherein:

The hydrofoil is accommodated in a recess provided on the bottom wall of the washing and dewatering bucket,

The outer peripheral edge of the partition plate overlaps with the outer peripheral edge of the recess on the bottom wall of the washing and dewatering tub from above.
The washing machine according to claim 1 or 2, further comprising:

A shaft extending downward from the rotating wing;

A through hole is provided in the central part of the partition plate for the shaft to pass through; and

The restriction portion is provided on the shaft portion and restricts the upward movement of the central portion of the partition plate.
The washing machine according to any one of claims 1 to 3, further comprising:

A shaft extending downward from the rotating wing;

A through hole is provided in the partition plate for the shaft to pass through; and

A ring-shaped protrusion is provided around the through hole on the partition plate and protrudes upward.
The washing machine according to any one of claims 1 to 4, characterized in that:

A plurality of first holes are formed in the rotary wing,

A plurality of second holes having a hole diameter greater than or equal to the hole diameter of the first hole is formed in the partition plate.
The washing machine according to claim 5, wherein:

In the hydrofoil, a blade is formed on the lower surface opposite to the bottom wall of the washing and dewatering bucket, and a plurality of third holes having a hole diameter greater than or equal to the hole diameter of the first hole are formed,

The bottom wall of the washing and dehydrating tub is formed with a suction port for sucking water from the bottom of the outer tub when the blade rotates.