WO2021184960A1

WO2021184960A1 - Washing machine

Info

Publication number: WO2021184960A1
Application number: PCT/CN2021/073761
Authority: WO
Inventors: 新村光则
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: JP2021145966A; CN115298382B; CN115298382A

Abstract

Provided is a washing machine capable of effectively utilizing a water-pumping wing to wash delicate laundry in a manner in which fabric is not easily damaged. A drive unit (30) comprises: a spin-drying tub shaft (200); a rotating wing shaft (300) inserted into the spin-drying tub shaft (200); a water-pumping wing shaft (400) inserted into the rotating wing shaft (300); a connecting body (60) which connects the rotating wing shaft (300) to a rotating wing (24) by means of enclosing a water-pumping wing (25), and has a space (67) for water pushed out by means of the rotation of the water-pumping wing (25) to flow out; a first engaging and disengaging mechanism portion (800) which performs switching between a double-wing drive mode and a single-wing drive mode; and a second engaging and disengaging mechanism portion (900) which performs switching between an integrated drive mode and an independent drive mode.

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.

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.

That is, it is difficult for the washing machine described above to efficiently use the hydrofoil to wash delicate laundry in a manner that does not easily damage the fabric.

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

The present invention solves such a problem, and its object is to provide a washing machine that can efficiently use the hydrofoil to wash delicate laundry in a manner that is not easy to damage the cloth.

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; and a driving part is provided under the outer tub and used to drive the washing and dewatering bucket, the rotating wing and the water lifting wing. Wherein, the driving part includes: a dehydration barrel shaft, which is fixed to the washing and dehydration barrel; a rotating wing shaft, which is inserted into the dehydration barrel shaft; A connecting body, which connects the rotating wing shaft and the rotating wing in a manner of enclosing the hydrofoil, and has an outflow portion for the water pushed out by the rotation of the hydrofoil; a drive motor; a first switching portion , Switching between a first drive mode and a second drive mode, the first drive mode is a drive mode in which the rotation of the drive motor is transmitted to the rotary wing shaft and the hydrofoil shaft, the first The second driving mode is a driving mode in which the rotation of the driving motor is not transmitted to the rotary wing shaft but is transmitted to the hydrofoil shaft; and the second switching unit switches between the third driving mode and the fourth driving mode The third drive mode is a drive mode in which the dehydration barrel shaft and the rotary wing shaft can be rotated integrally by fixing the dehydration barrel shaft and the rotating wing shaft in the circumferential direction, and the fourth drive The mode is a driving mode in which the spin wing shaft can rotate relative to the spin wing shaft by releasing the fixation of the spin wing shaft and the spin wing shaft.

It should be noted that the rotating wing shaft may be composed of one shaft or two shafts and a reduction mechanism or a speed increase mechanism provided between the two shafts.

According to the above structure, in the case of washing delicate laundry, the washing process is performed in a state where the first switching part is switched to the second driving mode and the second switching part is switched to the fourth driving mode. As a result, during the washing process, the drive motor does not rotate the rotor blades but only rotates the lifter blades, and while discharging water from the discharge port, water is circulated between the washing and dehydrating tub and the pumping path to wash delicate laundry. Therefore, it is possible to suppress fabric damage of delicate laundry caused by washing.

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

Furthermore, since there is no hydrofoil shaft between the dewatering bucket shaft and the rotating wing shaft inside, the hydrofoil will not become an obstacle, and it is easy to fix and release the dewatering bucket shaft and the rotating wing shaft. Therefore, the second switching unit does not need to use a complicated mechanism, and it is possible to suppress an increase in product cost and the like.

In the washing machine of this aspect, the following structure may be adopted: a plurality of blades are formed on the bottom wall side of the washing and dewatering bucket on the water-lifting wing, and the connecting body is provided with the blades facing each other and located at the same place. The inflow part into which the water from the outside of the connection body flows in when the said lifting hydrofoil is rotating.

According to the above structure, since the water outside the connection body can be smoothly guided to the blades of the hydrofoil enclosed in the connection body, the water can be smoothly conveyed to the water lifting path.

In the washing machine of this aspect, the following structure may be adopted: the drive motor is arranged below the outer tub such that its motor shaft is parallel to the rotating wing shaft and the hydrofoil shaft, and the motor shaft is provided There are a first motor rotation drive unit and a second motor rotation drive unit that rotate together with the motor shaft, and the rotating wing shaft and the hydrofoil shaft are respectively provided with a first motor rotation drive unit and a second motor rotation drive unit to be transmitted The first rotation driven portion and the second rotation driven portion of the rotation of the driving portion.

According to the above structure, since the rotary wing shaft and the lifter blade shaft and the drive motor are not aligned in the vertical direction, the vertical dimension of the drive portion can be made compact, and the height of the washing machine can be suppressed.

In the case of adopting the above-mentioned structure, further, the first switching part may adopt a structure including a clutch body and a power generating part, wherein the clutch body is arranged on the motor shaft to perform the first motor The rotation driving portion is fixed with respect to the motor shaft so that the rotation of the motor shaft is transmitted to the action of the first motor rotation driving portion and the fixing of the first motor rotation driving portion with respect to the motor shaft is released to make The rotation of the motor shaft is not transmitted to the operation of the first motor rotation drive unit, and the power generation unit is arranged in parallel with the motor shaft to generate power for operating the clutch body.

With such a structure, since the motor shaft and the power generation part are not arranged in the vertical direction, the vertical dimension of the drive part can be made more compact.

Invention effect

According to the present invention, the water lifter can be efficiently used to wash delicate laundry in a way that does not easily damage the cloth.

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 diagram schematically showing a main part of a washing machine according to an embodiment.

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(a) is a plan view of the rotary blade of the embodiment, and Fig. 3(b) is a plan view of the coupling body of the embodiment.

Fig. 4 is a longitudinal cross-sectional view of a drive unit showing the periphery of a first clutch mechanism according to the embodiment.

Fig. 5(a) is a cross-sectional view of the drive unit showing the periphery of the first clutch mechanism of the embodiment, and Fig. 5(b) is a front view of the cam of the lever drive device of the embodiment.

Fig. 6(a) is a diagram schematically showing a state where the first clutch mechanism is switched to the single-wing drive mode, and Fig. 6(b) is a diagram schematically showing the first clutch mechanism is switched to the double-wing drive mode Diagram of the state.

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

Fig. 8 is a bottom view of the drive unit showing the periphery of the second clutch mechanism according to the embodiment.

Fig. 9 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 according to the embodiment.

Fig. 10 (a) and (b) are respectively a plan view and a bottom view of a connected body of a modified example.

Description of Reference Signs

1: Fully automatic washing machine (washing machine); 20: Outer tub; 22: Washing and dewatering bucket; 24: Rotary wing; 25: Lifting wing; 27a: Discharge outlet; 28: Lifting water path; 30: Drive unit (drive part); 60 : Connecting body; 65: water hole (inflow part); 67: space (outflow part); 100: drive motor; 200: dehydration barrel shaft; 300: rotating wing shaft; 400: lifting wing shaft; 610: first belt Wheel (first rotary driven part); 620: first motor pulley (first motor rotary drive part); 630: first transmission belt; 710: second pulley (second rotary driven part); 720: first motor pulley Two-motor pulley (second motor rotation driving part); 730: second transmission belt; 800: first clutch mechanism part (first switching part); 810: clutch body; 851: torque motor (power generation part); 900 : Second clutch mechanism part; 910: clutch mechanism (second switching part); 920: driving device (second switching 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.

At the bottom of the washing and dewatering tub 22, a substantially disc-shaped rotating blade 24 is arranged. A plurality of blades 24a extending radially from the center are formed on the upper surface of the rotary wing 24. In addition, at the bottom of the washing and dewatering tub 22, a substantially disk-shaped hydrofoil 25 is arranged between the rotating wing 24 and the bottom wall of the washing and dewatering tub 22. In the lifting blade 25, a plurality of blades 25a extending radially from the center are formed on the lower surface of the bottom wall side of the washing and dewatering tub 22. As shown in FIG. The bottom wall of the washing and dewatering tub 22 is formed with a recess 26 that is recessed in a substantially circular shape corresponding to the shape of the hydrofoil 25, and the hydrofoil 25 is accommodated in the recess 26. In addition, a plurality of water passages 22b are formed at the position of the recess 26 on the bottom wall of the washing and dehydrating tub 22.

A water pumping cover 27 is attached to the side wall of the washing and dewatering tub 22, whereby the water pumping channels 28 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 28 is connected to the recess 26. A slit-shaped discharge port 27a is formed in the upper part of each water lifting cover 27. As shown in FIG.

At the outer bottom of the outer tub 20, a drive unit 30 for driving the washing and dewatering tub 22, the rotating wing 24, and the water-lifting wing 25 is arranged. During the washing process and the rinsing process, the drive unit 30 sometimes rotates the rotary blade 24 and the hydrofoil 25, and sometimes rotates only the hydrofoil 25 according to the washing operation process. In addition, the driving unit 30 integrally rotates the washing and dewatering tub 22 and the rotary wing 24 during the dewatering process. The drive unit 30 corresponds to the drive unit of the present invention. The detailed structure of the drive unit 30 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 40 is connected to the drain port 20a. A drain hose 41 is connected to the drain valve 40. That is, the drain port 20a and the drain hose 41 constitute a drain path, and the drain valve 40 is arranged in the drain path. When the drain valve 40 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 41.

A water supply unit 50 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 50 has a water supply valve 51. The water supply valve 51 is connected to a tap. When the water supply valve 51 is opened, the tap water is introduced into the water supply unit 50 from the tap. The introduced tap water flows out from the water injection port 52 of the water supply unit 50 into the washing and dehydrating tub 22.

Next, the structure of the drive unit 30 will be described in detail.

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 30. As shown in FIG. FIG. 3(a) is a plan view of the rotor blade 24, and FIG. 3(b) is a plan view of the coupling body 60. As shown in FIG. It should be noted that the illustration of the hanging rod 21 is omitted in FIG. 2.

2, the driving unit 30 includes: a driving motor 100, a dehydration barrel shaft 200, a rotating wing shaft 300, a hydrofoil shaft 400, a bearing unit 500, a first transmission mechanism 600, a second transmission mechanism 700, and a first clutch mechanism Section 800 and the second clutch mechanism section 900.

The drive motor 100 is an inner rotor type DC brushless motor, and generates torque for driving the washing and dewatering tub 22, the rotating wing 24, and the lifting wing 25. 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 an outer rotor type DC brushless motor.

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, 212, and 213 are provided at the upper end, the middle part, and the lower end, and an oil seal 214 is provided above the sliding bearing 211 at the upper end.

The rotating wing shaft 300 is inserted into the dehydration barrel shaft 200. The rotary wing shaft 300 is composed of an input shaft 310, an output shaft 320, and a speed reduction mechanism 330. The lower part of the input shaft 310, that is, the lower part of the rotary wing shaft 300, protrudes downward from the dehydration tub shaft 200, and the upper part of the output shaft 320, that is, the upper part of the rotary wing shaft 300 protrudes upward from the dehydration tub shaft 200. The outer peripheral surface of the input shaft 310 is received by the sliding bearing 213, and the input shaft 310 rotates smoothly in the dehydration tub shaft 200. The outer peripheral surface of the output shaft 320 is received by the sliding

bearings

211 and 212, and the output shaft 320 rotates smoothly in the dehydration tub shaft 200. In addition, the oil seal 214 can prevent water from entering between the dehydration barrel shaft 200 and the rotating wing shaft 300.

The input shaft 310 is hollow, and sliding

bearings

311 and 312 are provided at the upper end and the lower end inside the input shaft 310. The output shaft 320 is hollow, and sliding

bearings

321 and 322 are provided at the upper end and the lower end in the inside thereof, and an oil seal 323 is provided above the sliding bearing 321.

The deceleration mechanism 330 is a planetary gear mechanism, which is arranged inside the brake drum 201 of the dehydration barrel shaft 200, and includes a sun gear 331, an annular internal gear 332 surrounding the sun gear 331, and a gap between the sun gear 331 and the internal gear 332 A plurality of planetary gears 333 in between and a planetary carrier 334 that rotatably holds these planetary gears 333. The sun gear 331 is integrally formed on the upper end of the input shaft 310, the internal gear 332 is fixed to the inner peripheral surface of the brake drum 201, and the planet carrier 334 is fixed to the lower end of the output shaft 320. The deceleration mechanism 330 decelerates the rotation of the input shaft 310 and transmits it to the output shaft 320.

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

bearings

311, 312, 321, and 322, and the hydrofoil shaft 400 rotates smoothly in the rotary wing shaft 300. In addition, the oil seal 323 can prevent water from entering between the rotating wing shaft 300 and the lifting hydrofoil 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, at the upper end of the bearing housing 520, a support portion 523 for supporting a rod shaft described later is formed.

In the dewatering bucket shaft 200 rotatably inserted by the rotary wing shaft 300 and the lifter wing shaft 400, 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. It should be noted that the upper rolling bearing 532 is a bearing with a one-way clutch, and the dewatering tub shaft 200 can only rotate in the direction in which the brake band of the brake mechanism described later is tightened, and cannot rotate in the direction in which the brake band is slack. Therefore, the direction in which the dehydration tub shaft 200 can rotate is the rotation direction of the washing and dehydration tub 22 during dehydration.

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 rotating wing shaft 300 and the lifting wing shaft 400 extend into the interior of the washing and dewatering tub 22. In the washing and dewatering tub 22, the tip of the hydrofoil shaft 400 is inserted into the boss hole of the fixing boss 25b formed in the center of the hydrofoil 25 and fixed by the screw 71, whereby the hydrofoil shaft 400 is fixed to the hydrofoil 25.

Inside the washing and dewatering tub 22, the rotary wing 24 and the rotary wing shaft 300 are connected by a connecting body.

As shown in FIGS. 2 and 3(a), a plurality of bottomed cylinders are formed on the outer peripheral edge of the rotor blade 24 at predetermined intervals in the circumferential direction so as to protrude from the lower surface of the rotor blade 24 Shaped boss portion 24b. A mounting hole 24c is formed in the bottom surface of the boss portion 24b.

As shown in (b) of FIG. 2 and FIG. 3, the connecting body 60 includes a disc-shaped main body portion 61. The main body portion 61 has an outer diameter larger than the outer diameter of the hydrofoil 25, and the outer peripheral portion 61b is slightly inclined upward with respect to the inner peripheral portion 61a. A bottomed cylindrical fixing portion 62 protruding downward is formed in the center of the main body portion 61. In the fixing portion 62, a circular opening portion 63 is formed in the center, and a plurality of mounting holes 64 are formed around the opening portion 63. In addition, in the inner peripheral portion 61a of the main body portion 61, a plurality of circular water passage holes 65 are formed so as to be aligned in the circumferential direction.

A plurality of cylindrical boss portions 66 extending upward are provided on the outer peripheral edge portion of the main body portion 61 located on the outside of the hydrofoil 25 at a predetermined interval in the circumferential direction. The position of each boss portion 66 corresponds to the position of each boss portion 24b of the rotary wing 24.

The flange-shaped upper end of the rotating wing shaft 300 abuts against the fixing portion 62 from below, and screws 72 passing through the mounting holes 64 are fixed to the upper end of the rotating wing shaft 300. As a result, the connecting body 60 is assembled to the rotary wing shaft 300. As shown in FIG. The rotating wing shaft 400 passes through the opening portion 63 of the fixed portion 62. Each boss portion 66 of the connecting body 60 abuts on each boss portion 24b of the corresponding rotating wing 24 from below, and a screw 73 passing through each mounting hole 24c is fixed to each boss portion 66. As a result, the rotary wing 24 is assembled to the connecting body 60.

The connecting body 60 avoids the hydrofoil 25 existing between the rotating wing 24 and the rotating wing shaft 300 and is connected to the rotating wing 24 from the outer side of the hydrofoil 25. Therefore, the hydrofoil 25 is in a state of being enclosed by the connecting body 60. The water passage hole 65 of the connecting body 60 faces the blade 25a of the hydrofoil 25.

In addition, the water-passing hole 65 of the connection body 60 corresponds to the inflow part of this invention. In addition, the space 67 between the two boss portions 66 on the connecting body 60 corresponds to the outflow portion of the present invention.

2, the first transmission mechanism part 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 corresponds to the first rotation driven portion of the present invention, and the first motor pulley 620 corresponds to the first motor rotation driving portion of the present invention.

The first pulley 610 has a disc shape, and is fixed to the lower part of the rotating wing shaft 300 exposed from the dehydration drum shaft 200 below the outer tub 20. A groove portion 611 in which the first transmission belt 630 is wound is formed on the outer peripheral portion of the first pulley 610.

The first motor pulley 620 includes a pulley portion 621 and a hub portion 622 integrally formed on the upper side of the pulley portion 621. A groove portion 623 in which the first transmission belt 630 is wound is formed on the outer peripheral portion 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 first motor pulley 620 is assembled to the middle portion 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 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 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 300 through the first transmission mechanism 600. At this time, the rotation of the drive motor 100 is reduced in accordance with the reduction ratio determined by the ratio of the outer diameters of the first pulley portion 610 and the pulley portion 621 of the first motor pulley 620.

2, 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 corresponds to the second rotation driven portion of the present invention, and the second motor pulley 720 corresponds to the second motor rotation driving portion of the present invention.

The second pulley 710 has a disc shape, and is fixed to the lower part of the hydrofoil shaft 400 exposed from the rotating wing shaft 300 below the outer tub 20. The second pulley 710 is located below 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.

The second motor pulley 720 has a disc shape and is fixed to the front end 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 larger than 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.

The rotation of the drive motor 100 is transmitted to the hydrofoil shaft 400 by the second transmission mechanism part 700. At this time, the rotation of the drive motor 100 is decelerated according to a reduction ratio determined by the ratio of the outer diameters of the second pulley 710 and the second motor pulley 720.

The first clutch mechanism part 800 switches between the double-wing drive mode and the single-wing drive mode by making the rotation energy of the motor shaft 130 or not be transmitted to the rotary wing shaft 300 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 rotor blade 24 and the hydrofoil 25, and the single-wing drive mode is a drive mode in which the rotation of the drive motor 100 is not transmitted to the rotor blade 24 but is transmitted to the hydrofoil 25. The first clutch mechanism 800 corresponds to the first switching unit of the present invention. The double-wing drive mode is equivalent to the first drive mode of the present invention, and the single-wing drive mode is equivalent to the second drive mode of the present invention.

FIG. 4 is a longitudinal cross-sectional view of the drive unit 30 showing the periphery of the first clutch mechanism 800. FIG. 5(a) is a cross-sectional view showing the driving unit around the first clutch mechanism 800, and FIG. 5(b) is a front view of the cam 852 of the lever driving device 850.

4 to 5(b), 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 rotor 110 and the first motor pulley 620. 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. The lower side portion 811a has an inner diameter approximately equal to the outer diameter of the hub portion 622 of the first motor pulley 620, and a first spline 814 is formed on its inner peripheral surface over the entire circumference. Corresponding to the first spline 814, a spline 624 is formed on the outer peripheral surface of the hub portion 622 of the first motor pulley 620 over the entire circumference.

On the inner peripheral surface of the upper side portion 811b, second splines 815 are formed over the entire circumference. Corresponding to the second spline 815, at a position between the rotor 110 and the first motor pulley 620 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 815.

The second spline 815 of the clutch part 811 is engaged with the spline 131 of the motor shaft 130. By this engagement, the clutch part 811 can move in the axial direction of the motor shaft 130 with respect to the motor shaft 130 and can work together 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. The surrounding portion 812 is formed with a pair of shaft portions 816 whose outer peripheral surfaces face away from each other.

The clutch body 810 moves to the engagement position where the first spline 814 of the clutch portion 811 engages with the spline 624 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 814 and the spline 624 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.

The spring 820 is arranged between the clutch body 810 and the rotor 110 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 the arrangement direction of the dehydration tub shaft 200 and the motor shaft 130.

The clutch lever 830 includes a lever body 831, a pair of arms 832, and an operating plate 833. The rod main body 831 has a substantially rectangular shape. The pair of arms 832 extend from both ends of the lever main body 831 toward the clutch body 810. The shaft portion 816 of the surrounding portion 812 is inserted into the ring-shaped connecting portion 832 a provided at the tip portion of each arm 832. 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 formed integrally with the mounting plate 860, and a support shaft 842 that is fixed to the upper portion 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 852 has a disc 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 double 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 cam groove 853 accommodates the operating plate 833 of the clutch lever 830 inside. It should be noted that the torque motor 851 corresponds to the power generation unit of the present invention.

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. 6(a) is a diagram schematically showing a state where the first clutch mechanism unit 800 is switched to a single-wing drive mode, and Fig. 6(b) is a diagram schematically showing a state where the first clutch mechanism unit 800 is switched to a 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 Fig. 6 (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. 6(a), the cam groove 853 is at the lowermost position, the operating piece 833 is pressed down, and the top end of the arm 832, that is, the connecting 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 814 of the clutch body 810 is in a disengaged state from the spline 624 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 400 that is the hydrofoil 25, but is not transmitted to the first motor pulley 620, and is not transmitted to the rotating wing shaft 300 that is the rotor wing 24.

On the other hand, in the double-wing drive mode, as shown in FIG. 6(b), the cam groove 853 is at the uppermost position, the operating piece 833 is pushed up, and the connecting portion 832a of the arm 832 is pushed down. As a result, the clutch body 810 is pressed down to the engagement position by the force of the spring 820, the first spline 814 is engaged with the spline 624, 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 400, that is, the hydrofoil 25, and the rotating wing shaft 300, that is the rotor 24.

FIG. 7 is a longitudinal cross-sectional view of the drive unit 30 showing the periphery of the second clutch mechanism part 900. FIG. 8 is a bottom view of the driving unit 30 showing the periphery of the second clutch mechanism part 900. 9 is a bottom view of the drive unit 30 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.

It should be noted that in FIG. 7, for convenience of description, only the right half of the clutch wheel housing 911, the clutch spring 912 and the ratchet wheel 913 are shown. In addition, in FIG. 9, for convenience of description, the bearing box 520 only shows its trunk in a cross-section.

Referring to FIGS. 7 to 9, the second clutch mechanism part 900 includes a clutch mechanism 910 and a driving device 920 for driving the clutch mechanism 910. Through the clutch mechanism 910 and the driving device 920, it is possible to switch between the integrated driving mode and the independent driving mode. A driving mode that can rotate integrally with the rotary wing shaft 300. The independent driving mode is a driving mode in which the rotary wing shaft 300 can rotate relative to the dehydrating drum shaft 200 by releasing the circumferential fixation of the dehydrating bucket shaft 200 and the rotating wing shaft 300 . The clutch mechanism 910 and the driving device 920 constitute the second switching part of the present invention. The integrated drive mode corresponds to the third drive mode of the present invention, and the independent drive mode corresponds to the fourth drive mode of the present invention.

Furthermore, the second clutch mechanism part 900 includes a braking mechanism 930 for braking the dehydration tub shaft 200 and an opening and closing mechanism 940 for opening and closing the drain valve 40. 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 wheel housing 911, a clutch spring 912, a ratchet wheel 913, a clutch lever 914, a lever shaft 915, a spring 916, and a connecting body 917.

The clutch wheel housing 911 is fixed to the lower part of the rotating wing shaft 300 that is the input shaft 310 so as to be continuous with the lower part of the dewatering tub shaft 200. The outer diameter of the clutch wheel housing 911 is equal to the outer diameter of the lower part of the dehydration tub shaft 200. The clutch spring 912 is plated between the dewatering tub shaft 200 and the clutch wheel housing 911, and the clutch wheel housing 911, that is, the rotating wing shaft 300, is fixed to the dewatering tub shaft 200 by its tightening force. The ratchet 913 is arranged around the clutch spring 912. One end of the clutch spring 912 is connected to the ratchet gear 913. The ratchet wheel 913 can rotate in a direction in which the clutch spring 912 expands and relaxes.

The rod shaft 915 is supported by the support portion 523 of the bearing box 520 and extends downward. A clutch lever 914 is rotatably mounted on the lower part of the lever shaft 915. As shown in FIG. The clutch lever 914 is formed with a first arm portion 914a extending in the direction of the ratchet gear 913, and a clutch plate 918 that can be engaged with the ratchet gear 913 is attached to the tip of the first arm portion 914a. In addition, the clutch lever 914 is formed with a second arm portion 914 b extending in a direction away from the dehydration tub shaft 200. It should be noted that the rod shaft 915 is also used for the braking mechanism 930.

The spring 916 is a coil spring and is attached to the lever shaft 915 to urge the clutch lever 914 to rotate the clutch lever 914 in the direction in which the clutch plate 918 and the ratchet wheel 913 are engaged. When the clutch plate 918 engages with the ratchet gear 913, the ratchet gear 913 rotates in a direction in which the clutch spring 912 is loosened. When the clutch spring 912 relaxes and stretches, the fixation of the rotary wing shaft 300 with respect to the dehydration tub shaft 200 is released.

The connecting body 917 is arranged between the driving device 920 and the drain valve 40, and has a first connecting portion 917a and a second connecting portion 917b. The second arm portion 914b of the clutch lever 914 is connected to the first connecting portion 917a. In addition, in the connection body 917, a first attachment portion 917c is provided at the end on the drive device 920 side, and a second attachment portion 917d is provided at the end on the drain valve 40 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 915. The brake lever 932 is formed with an arm portion 932 a extending in a direction away from the dehydration tank shaft 200. The arm portion 932a is connected to the second connecting portion 917b of the connecting body 917.

The spring 933 is a coil spring, and is assembled to the lever shaft 915, and urges the brake lever 932 to rotate the brake lever 932 in the direction in which the brake band 931 is pulled. In this state, since the brake shoe 934 of the brake band 931 contacts 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 42 of the drain valve 40 and is connected to the valve body 43 movably arranged in the valve chamber 42. 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 917d of the connecting body 917. The working body 941 and the connecting rod 942 move toward or away from the drain valve 40, whereby the valve body 43 closes or opens the drain port 44 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 clutch mechanism 910, the brake 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 assembled to the mounting portion 924, and the other end is assembled to the first mounting portion 917c of the connecting body 917.

In the independent driving mode, as shown in FIG. 7, the clutch spring 912 is in a relaxed state when the clutch plate 918 is engaged with the ratchet wheel 913. As the clutch spring 912 relaxes and expands, the fixation of the dehydration tub shaft 200 and the rotary wing shaft 300 is released, and the rotary wing shaft 300 is in a state of rotating independently of the dehydration tub shaft 200. That is, the rotating blade 24 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. That is, the washing and dehydrating tub 22 is in a state in which it cannot rotate. In addition, the drain valve 40 is in a state where the valve body 43 is closed by the opening and closing mechanism 940.

When switching from the independent driving mode to the integrated driving mode, as shown in FIG. 8, the cam 922 is rotated by the operation of the torque motor 921, and the connecting body 917 is pulled by the connecting wire 923 to move to the driving device 920 side. As a result, the clutch lever 914 rotates to the driving device 920 against the biasing force of the spring 916, and the clutch plate 918 is disengaged from the ratchet gear 913. As a result, the ratchet wheel 913 rotates in the direction in which the clutch spring 912 is tightened. By tightening the clutch spring 912, the dewatering tub shaft 200 and the rotating wing shaft 300 are fixed in the circumferential direction, and the dewatering tub shaft 200 and the rotating wing shaft 300 can rotate integrally. That is, it is in a state where the washing and dehydrating tub 22 and the rotary blade 24 can rotate integrally.

In the integrated driving mode, when the connecting body 917 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 is loosened, and the brake shoe 934 is separated from 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 40. As a result, the valve body 43 of the drain valve 40 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 state without rotating, and the rotating blade 24 and the water-lifting blade 25 are in a rotatable state. 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 24 and the hydrofoil 25.

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 24 and the lifting blade 25 rotate clockwise and counterclockwise at intervals. At this time, the deceleration rate of the second transmission mechanism portion 700 is lower than the deceleration rates of the first transmission mechanism portion 600 and the deceleration mechanism 330, and the hydrofoil 25 rotates at a higher speed than the rotary vane 24.

The rotation of the rotary wing 24 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 blade 24a of the rotating wing 24.

When the hydrofoil 25 rotates, the water between the washing and dehydrating tub 22 and the outer tub 20 is sucked into the recess 26 through the water passage 22b. The water sucked into the recessed portion 26 passes through the water through hole 65 of the connecting body 60 and flows into the inside of the connecting body 60 where the hydrofoil 25 is located. The inflowing water is pushed out by the blades 25 a of the hydrofoil 25, passes through the space 67 between the two boss portions 66 on the connection body 60, flows out from the inside of the connection body 60, and is sent to the respective lifting water passages 28. The water that has flowed into each pumping channel 28 flows through each pumping channel 28 and is discharged into the washing and dehydrating tub 22 from each discharge port 27a. The laundry on the water surface side in the washing and dehydrating tub 22 is knocked and washed by the falling water.

In this way, the standard laundry is washed well by the action of the vortex caused by the rotation of the rotary blade 24 and the circulation of water caused by the rotation of the hydrofoil 25. It should be noted that in the cleaning process, the cleaning performance of the detergent is also exerted.

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 24 but is transmitted to the hydrofoil 25.

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 25 rotates in a state where the rotating blade 24 is stopped. At this time, the drive motor 100 and the hydrofoil 25 may continuously rotate in either the clockwise direction and the counterclockwise direction, or may rotate intermittently. In the case where the drive motor 100 and the hydrofoil 25 rotate intermittently, they may rotate clockwise and counterclockwise intermittently.

The laundry in the washing and dewatering tub 22 is washed by being hit by the detergent-containing water discharged from the discharge port 27a of the pumping channel 28. 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, thereby washing the laundry. At this time, the rotor blade 24 is not rotationally driven by the drive motor 100, so no eddy current is generated, and it is difficult to generate friction between the laundry. In addition, the laundry is also hard to be rubbed by the blade 24a of the rotary wing 24.

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 the water caused by the rotation of the hydrofoil 25, delicate laundry can be 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 rotating wing 24 and the hydrofoil 25 are rotated by the vortex caused by the rotation of the rotating wing 24 and caused by the rotation of the hydrofoil 25 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 25 rotates, and by the circulation of water caused by the rotation of the hydrofoil 25, the delicate 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 dewatering tub shaft 200 and the rotating wing shaft 300 are combined, and the washing and dewatering tub 22 and the rotating wing 24 can rotate integrally. In addition, by the first clutch mechanism 800, the driving mode is switched to the double-wing driving mode. As a result, the rotation of the drive motor 100 is transmitted to the rotary blade shaft 300 via the first transmission mechanism portion 600 and is transmitted to the hydrofoil shaft 400 via the second transmission mechanism portion 700.

When switching to the integrated driving mode, the drain valve 40 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.

After the drainage is completed, the drive motor 100 rotates in one direction at a high speed. As a result, the rotating wing shaft 300 and the dewatering bucket shaft 200 integrated with the rotating wing shaft 300 rotate at high speed, and the washing and dewatering bucket 22 and the rotating wing 24 rotate together at high speed. The laundry is dehydrated by the centrifugal force generated in the washing and dehydrating tub 22.

The hydrofoil 25 rotates at a speed different from that of the rotary wing 24 and the washing and dewatering tub 22, and therefore rotates relative to the rotary wing 24 and the washing and dewatering tub 22. However, since the hydrofoil 25 is not exposed from the inside of the washing and dehydrating tub 22, the rotating hydrofoil 25 does not contact the laundry.

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 rotary blade 24 and the hydrofoil 25 rotate and a period during which only the hydrofoil 25 rotates are generated.

As described above, according to this embodiment, in the case of washing delicate laundry, the washing process is performed in a state where the first clutch mechanism 800 is switched to the single-wing drive mode and the second clutch mechanism 900 is switched to the independent drive mode. . As a result, in the washing process, delicate laundry can be washed by the following method: the drive motor 100 does not rotate the rotor blade 24 but only rotates the hydrofoil 25, and discharges water from the outlet 27a while allowing the water to flow in the washing and dewatering tub. Circulate between 22 and the raising waterway 28. Therefore, it is possible to suppress fabric damage of delicate laundry caused by washing.

In addition, according to this embodiment, since there is no hydrofoil shaft 400 between the dewatering bucket shaft 200 and the rotating wing shaft 300 inside, the hydrofoil shaft 400 does not become an obstacle, and it is easy to connect the dewatering bucket shaft 200 and the rotating wing shaft 300. Fixed and fixed release. Therefore, the clutch mechanism 910 of the second clutch mechanism part 900 can be realized without using a complicated mechanism, that is, for example, it can be realized by an existing mechanism using the clutch wheel housing 911, the clutch spring 912, the ratchet gear 913, etc., and the product cost can be reduced. The increase and so on.

Further, according to the present embodiment, in the hydrofoil 25, a plurality of blades 25a are formed on the bottom wall side of the washing and dewatering tub 22, and the connecting body 60 is provided to face the blades 25a and provide for connection when the hydrofoil 25 rotates. The water passage 65 through which water from the outside of the body 60 flows. Thereby, since the water outside the connecting body 60 can be smoothly guided to the blades 25a of the hydrofoil 25 enclosed in the connecting body 60, the water can be smoothly conveyed to the lifting channel 28.

Further, according to the present embodiment, the following structure is adopted: the drive motor 100 is arranged below the outer tub 20 such that the motor shaft 130 is parallel to the rotary wing shaft 300 and the hydrofoil shaft 400, and the drive motor 100 is arranged on the rotary wing shaft 300 and the hydrofoil The shaft 400 is provided with a first pulley 610 and a second pulley 710, respectively. The motor shaft 130 is provided with a first motor pulley 620 and a second motor pulley 720. The first motor pulley 620 is connected to the The first pulley 610 and the second motor pulley 720 are connected to the second pulley 710 via a second transmission belt 730. As a result, the rotary wing shaft 300 and the hydrofoil shaft 400 and the drive motor 100 are not aligned in the vertical direction, so the vertical dimension of the drive unit 30 can be made compact, and the height of the fully automatic washing machine 1 can be suppressed.

Furthermore, according to the present embodiment, the first clutch mechanism 800 adopts a structure in which the torque motor 851 for generating power for operating the clutch body 810 is arranged in parallel with the motor shaft 130 of the drive motor 100. As a result, the motor shaft 130 and the torque motor 851 are not aligned in the vertical direction, so the vertical dimension of the drive unit 30 is more compact.

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-mentioned embodiment, the connecting body 60 includes a disc-shaped main body portion 61 and a plurality of boss portions 66 provided on the outer peripheral edge of the main body portion 61. The structure of the space 67 of the outflow part. However, the structure of the connected body 60 is not limited to such a structure. For example, as shown in (a) and (b) of FIG. 10, the connecting body 60 may be provided with a peripheral wall 68 rising from the outer peripheral edge of the main body 61, and an opening 69 that serves as an outflow portion is formed in the peripheral wall 68. Structure. With this structure, the connecting body 60 can be reinforced by the peripheral wall 68. In addition, the shape of the water passage hole 65 formed in the connecting body 60 serving as the inflow portion may not be the circular shape as in the above-mentioned embodiment, and may be, for example, an elliptical shape elongated in the radial direction or other shapes. Further, the connecting body 60 may also adopt a structure formed integrally with the rotary wing shaft 300.

In addition, in the above-mentioned embodiment, the rotary wing shaft 300 includes an input shaft 310 fixed to the first pulley 610, an output shaft 320 fixed to the connecting body 60, and a reduction gear provided between the two

shafts

310 and 320. The structure of the agency 330. However, the structure of the rotary wing shaft 300 is not limited to the above-mentioned structure. For example, the rotating wing shaft 300 may include a speed increasing mechanism instead of the speed reducing mechanism 330. Alternatively, the rotary wing shaft 300 may not include the speed reduction mechanism 330 and may be constituted by a single 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 300. In this case, the first pulley 610 is rotatable with respect to the rotating wing shaft 300, and the clutch body 810 is arranged on the rotating wing shaft 300. In this structure, when switching to the single-wing drive mode, the first pulley 610 idly rotates and the rotating wing shaft 300 does not rotate, and when switching to the double-wing drive mode, the first pulley 610 rotates together with the rotating wing shaft 300.

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 400. In this case, the third clutch mechanism can switch between a state in which the rotation of the motor shaft 130 is transmitted to the hydrofoil shaft 400 and a state in which it 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 300, 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 400, so that a drive mode in which the hydrofoil shaft 400, that is, the hydrofoil 25 does not rotate, but the rotating wing shaft 300, that is, the rotating wing 24 rotates, can be realized. This drive mode corresponds to the first drive mode of the present invention, and the first switching unit of the present invention is composed of a first clutch mechanism unit 800 and a third clutch mechanism unit.

It should be noted that when the third clutch mechanism part is provided as described above, it may also be switched to the hydrofoil shaft 400 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 300 rotates without rotating. In this way, the power consumption of the drive motor 100 can be reduced by the amount of torque that does not require the rotation of the hydrofoil 25.

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 clutch mechanism 910 but also drives the opening and closing mechanism 940 that opens and closes the drain valve 40. However, it is also possible to adopt a structure in which the second clutch mechanism part 900 does not include the opening and closing mechanism 940 and 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 27a is provided in the upper part of the pumping channel 28, but it may be provided in other positions, such as a center part. In addition, the discharge port 27a may have any shape.

Further, in the above embodiment, the first transmission mechanism part 600 is composed of the first pulley 610, the first motor pulley 620, and the first transmission belt 630, and the second transmission mechanism part 700 is composed of the second pulley 710, the second pulley The motor pulley 720 and the second transmission belt 730 are constituted. However, the first transmission mechanism portion 600 may also be composed of a first motor gear provided on the motor shaft 130 and a first gear provided on the rotating wing shaft 400 and meshed with the first motor gear, and the second transmission mechanism portion 700 may also be composed of A second motor gear provided on the motor shaft 130 and a second gear provided on the hydrofoil shaft 300 and meshed with the second motor gear are formed. In this case, the first motor gear and the first gear respectively correspond to the first motor rotation driving portion and the first rotation driven portion of the present invention, and the second motor gear and the second gear respectively correspond to the second motor rotation drive portion and the first rotation follower portion of the present invention. The motor rotation driving part and the second rotation driven part.

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;

A spouting port for the water flowing through the lifting channel to be spouted into the washing and dehydrating barrel; and

The driving part is arranged below the outer tub and is used to drive the washing and dewatering tub, the rotating wing and the lifting wing,

The driving part includes:

The dehydration barrel shaft is fixed to the washing and dehydration barrel;

The rotating wing shaft is inserted into the dehydration barrel shaft;

A hydrofoil shaft inserted into the rotating wing shaft and fixed to the hydrofoil;

A connecting body that connects the rotary wing shaft and the rotary wing in a manner of enclosing the water-lifting wing, and has an outflow portion for the water pushed out by the rotation of the water-lifting wing to flow out;

Drive motor

The first switching unit switches between a first drive mode and a second drive mode, the first drive mode being a drive mode in which the rotation of the drive motor is transmitted to the rotary wing shaft and the hydrofoil shaft , The second driving mode is a driving mode in which the rotation of the driving motor is not transmitted to the rotary wing shaft but is transmitted to the hydrofoil shaft; and

The second switching part switches between a third drive mode and a fourth drive mode. The third drive mode is to fix the dehydration barrel shaft and the rotating wing shaft in the circumferential direction to make the dehydration barrel A drive mode in which the shaft and the rotary wing shaft can rotate integrally, and the fourth drive mode is to enable the rotary wing shaft to be relative to the dehydration bucket by releasing the fixation of the dehydration barrel shaft and the rotary wing shaft. Drive mode for shaft rotation.
The washing machine according to claim 1, wherein:

A plurality of blades are formed on the bottom wall side of the washing and dewatering bucket in the water lifter blade,

The connecting body is provided with an inflow portion opposed to the blades and into which water from the outside of the connecting body flows when the hydrofoil rotates.
The washing machine according to claim 1 or 2, characterized in that:

The drive motor is arranged under the outer tub in such a way that its motor shaft is parallel to the rotating wing shaft and the hydrofoil shaft,

The motor shaft is provided with a first motor rotation driving portion and a second motor rotation driving portion that rotate together with the motor shaft,

The rotary wing shaft and the hydrofoil shaft are respectively provided with a first rotary driven part and a second rotary driven part to which rotations of the first motor rotary drive part and the second motor rotary drive part are transmitted.
The washing machine according to claim 3, wherein:

The first switching unit includes:

The clutch body is arranged on the motor shaft, and performs the operation of fixing the first motor rotation drive portion with respect to the motor shaft so that the rotation of the motor shaft is transmitted to the first motor rotation drive portion and releases the movement The fixing of the first motor rotation driving part with respect to the motor shaft so that the rotation of the motor shaft is not transmitted to the action of the first motor rotation driving part; and

The power generating unit is arranged in parallel with the motor shaft and generates power for operating the clutch body.