JP2022090569A - washing machine - Google Patents

Abstract

To provide a washing machine in which a rotary vane does not corotate by the rotation of a pumping vane.SOLUTION: A fully automatic washing machine includes: a washing and dewatering tub arranged rotatably in an outer tub; a rotary vane arranged rotatably at a bottom part of the washing and dewatering tub; a pumping vane arranged rotatably between a bottom wall of the washing and dewatering tub and the rotary vane; a pumping passage which is provided on a side wall of the washing and dewatering tub, and in which water supplied by the rotation of the pumping vane flows; a discharge port where the water which has flowed in the pumping passage is discharged to the inside of the washing and dewatering tub; and a drive part for driving the washing and dewatering tub, the rotary vane, and the pumping vane. The drive part includes: a drive motor; a switching part 800a for performing switching between a first drive mode in which the rotation of the drive motor is transmitted to the rotary vane and the pumping vane, and a second drive mode in which the rotation of the drive motor is not transmitted to the rotary vane but is transmitted to the pumping vane; and a restriction part 800b for restricting the rotation of the rotary vane in the second drive mode.SELECTED DRAWING: Figure 5

Description

The present invention relates to a washing machine.

A rotary wing rotatably provided at the bottom of the washing / dehydrating tub, a pumping passage provided on the side wall of the washing / dehydrating tub, and a space between the bottom and the rotary wing of the washing / dehydrating tub. Patent Document 1 describes a washing machine including a pumping wing that circulates washing liquid in a washing / dehydrating tub through a pumping passage and a speed increasing means for increasing the rotation speed of the pumping wing to be higher than the rotation speed of the rotary wing. ..

In the above-mentioned washing machine, the speed increasing means are fixed to the sun gear fixed to the bottom of the washing / dehydrating tank, the planetary gear fixed to the rotary wing and rotating around the sun gear, and fixed to the pumping wing, and the planetary gear. It consists of an outer ring gear that rotates in mesh with the outer circumference. When the rotary blade rotates, this rotation is accelerated by the planetary gear and the outer ring gear and transmitted to the pumping blade, and the pumping blade rotates at a higher speed than the rotary blade.

Japanese Unexamined Patent Publication No. 2009-28509

In the washing machine of Patent Document 1, both the rotary blade and the pumping blade rotate in the washing process. Therefore, when the delicate laundry is washed, there is a concern that the delicate laundry is rubbed by the rotating rotor blades and the cloth is easily damaged.

Therefore, it is conceivable to configure the drive unit including the drive motor so that the rotation of the drive motor can be transmitted to the pumping blade without being transmitted to the rotary blade. In this way, it may be possible to gently wash delicate clothes by circulating water in the washing / dehydrating tank by rotating the pumping blades.

However, in such a configuration, when the pumping blade rotates, the rotation is transmitted to the rotary blade by the viscosity of the water between the pumping blade and the rotary blade, and the rotation is not driven by the drive motor. There is concern that the rotor will rotate.

The present invention solves such a problem, and an object of the present invention is to provide a washing machine in which the rotary blades do not easily rotate together due to the rotation of the pumping blades.

The washing machine according to the main aspect of the present invention includes a washing / dehydrating tub rotatably arranged in an outer tub, a rotary wing rotatably arranged at the bottom of the washing / dehydrating tub, and a bottom wall of the washing / dehydrating tub. A pumping wing rotatably arranged between the washing and dehydrating wing, a pumping channel provided on the side wall of the washing / dehydrating tank, and a pumping channel through which water supplied by the rotation of the pumping wing flows, and a pumping channel. A discharge port for discharging water into the washing / dehydrating tub, and a driving unit for driving the washing / dehydrating tub, the rotary blade, and the pumping blade are provided. Here, the drive unit includes a drive motor, a two-blade drive mode in which the rotation of the drive motor is transmitted to the rotary blade and the pumping blade, and the drive unit is described without transmitting the rotation of the drive motor to the rotary blade. It includes a switching unit for switching between the one-blade drive mode transmitted to the pumping blade and a regulation unit for restricting the rotation of the rotary blade in the one-blade drive mode.

According to the above configuration, the pumping blade is rotated without rotating the rotary blade by the drive unit, and water is circulated between the washing / dehydrating tank and the pumping channel while discharging water from the discharge port, which is delicate. You can wash the laundry. Therefore, the delicate laundry damage caused by washing can be suppressed.

Moreover, in the one-blade drive mode in which only the pumping blade is rotated, the rotation of the rotary blade is regulated by the regulating unit. Therefore, when the pumping blade rotates, the viscosity of the water between the pumping blade and the rotary blade can prevent the rotary blade from rotating even if a force for rotating the rotary blade is transmitted.

In the washing machine according to the present embodiment, the drive unit may be configured to include a rotary blade shaft that is a rotary shaft of the rotary blade and a rotating body that rotates together with the rotary blade shaft. In this case, the restricting unit performs a restricting operation of contacting the rotating body to restrict the rotation of the rotating body and a deregulating operation of releasing the restriction of the rotation of the rotating body away from the rotating body. May include regulators.

According to the above configuration, when the mode is switched to the one-wing drive mode, the restricting body performs a restricting operation, and the rotation of the rotating body is restricted. As a result, the rotation of the rotary blade shaft is restricted, so that the rotary blade is prevented from rotating even if a force for rotating the rotary blade is applied to the rotary blade.

If the rotating body has a larger diameter than the rotating blade axis and the restricting body comes into contact with the outer peripheral edge of the rotating body, the force applied to the restricting body when the rotating blade tries to rotate. Becomes smaller, making it easier to prevent the rotating blades from rotating.

In the case of the above configuration, the restricting body further includes an engaging portion, and the rotating body includes an engaged portion with which the engaging portion engages in the rotation direction of the rotating body. Can be said. In this case, the engaged portion has a shape recessed from the outer peripheral edge of the rotating body toward the center, and the engaged portion can be inserted into the engaged portion from the outer peripheral edge side of the rotating body. Then, both side edges of the engaged portion extending in the radial direction are inclined with respect to the radial central axis of the engaged portion so as to expand toward the outer peripheral edge of the rotating body. It can be configured as such.

With such a configuration, when the rotating body rotates due to the application of a large rotational force, the engaging portion is easily pulled out from the engaged portion along the inclination of the side edge, and the engaging portion is provided. And the engaged portion are disengaged. Therefore, a large load is less likely to be applied to the regulator, and the regulator is less likely to be damaged.

In the washing machine according to this aspect, the rotating body may be configured to be provided on the motor shaft of the drive motor. In this case, the switching unit has a fixing operation of fixing the rotating body to the motor shaft so that the rotation of the motor shaft is transmitted to the rotating blade shaft via the rotating body, and a fixing operation to the motor shaft. It may include a clutch body that performs a fixing release operation for releasing the fixing of the rotating body. Further, the drive unit is included in the switching unit and the regulation unit, and when the two-wing drive mode is switched to, the clutch body is made to perform the fixing operation and the regulation body is subjected to the regulation release operation. When the clutch body is switched to the one-wing drive mode, the clutch body may include a driving device for performing the fixing release operation and the restricting body may perform the restricting operation.

According to the above configuration, one drive device performs a fixing operation and a fixing release operation by the clutch body of the switching part and a regulation operation and a regulation release operation by the regulation body of the regulation part, so that the cost of the washing machine can be reduced. Can be planned.

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

The effects or significance of the present invention will be further clarified by the description of the embodiments shown below. However, the following embodiments are merely examples when the present invention is put into practice, and the present invention is not limited to those described in the following embodiments.

FIG. 1 is a side sectional view of a fully automatic washing machine according to an embodiment. FIG. 2 is a vertical cross-sectional view of a main part of a fully automatic washing machine showing a bottom of an outer tub and a drive unit according to an embodiment. 3A is a plan view of the first pulley according to the embodiment, FIG. 3B is a bottom view of the first motor pulley according to the embodiment, and FIG. 3C is a bottom view. , Is a plan view of the second pulley according to the embodiment. FIG. 4 is a vertical sectional view of a drive unit showing the periphery of the first clutch mechanism portion according to the embodiment. FIG. 5A is a perspective view of the first clutch mechanism portion according to the embodiment, and FIG. 5B is a state before the clutch lever is attached to the lever support portion according to the embodiment. It is a perspective view of the 1st clutch mechanism part which shows. FIG. 5C is a perspective view of the latch lever according to the embodiment, and FIG. 5D is a front view of the cam according to the embodiment. FIG. 6A is a diagram schematically showing a state in which the first drive mode is switched by the first clutch mechanism unit according to the embodiment. FIG. 6B is a diagram schematically showing a state in which the first clutch mechanism unit switches to the second drive mode according to the embodiment. FIG. 6C is a diagram schematically showing a state in which the first clutch mechanism unit switches to the third drive mode according to the embodiment. FIG. 7 is a vertical cross-sectional view of the drive unit showing the periphery of the second clutch mechanism portion according to the embodiment. FIG. 8 is a bottom view of the drive unit showing the periphery of the second clutch mechanism portion according to the embodiment. FIG. 9 is a bottom view of the drive unit according to the embodiment, in which the periphery of the second clutch mechanism portion is shown and the first pulley, the second pulley, and the clutch mechanism are removed. FIG. 10A is a perspective view of the clutch mechanism turned upside down according to the embodiment. 10 (b) is a perspective view of the clutch body according to the embodiment, and FIG. 10 (c) is a perspective view of the clutch receiving portion turned upside down according to the embodiment.

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

FIG. 1 is a side sectional view of the fully automatic washing machine 1.

The fully automatic washing machine 1 includes a housing 10 that constitutes the appearance. The housing 10 includes a rectangular tubular body portion 11 having open upper and lower surfaces, a top plate 12 that covers the upper surface of the body portion 11, and a pedestal 13 that supports the body portion 11. The top plate 12 is formed with a loading port 14 for loading laundry. The input port 14 is covered with an openable and closable upper lid 15.

Inside the housing 10, a substantially cylindrical outer tank 20 having an open upper surface is elastically suspended and supported by four suspension rods 21 having a vibration isolator. A substantially cylindrical washing / dehydrating tub 22 having an open upper surface is arranged in the outer tub 20. A large number of dehydration holes 22a are formed on the side wall of the washing / dehydrating tub 22 over the entire circumference. A balance ring 23 is provided on the upper part of the washing / dehydrating tub 22.

A substantially disk-shaped rotary blade 24 is arranged at the bottom of the washing / dehydrating tub 22. On the upper surface of the rotary blade 24, a plurality of blades 24a extending radially from the center are formed. Further, at the bottom of the washing / dehydrating tank 22, a substantially disk-shaped pumping blade 25 is arranged between the rotary blade 24 and the bottom wall of the washing / dehydrating tank 22. On the pumping blade 25, a plurality of blades 25a extending radially from the center are formed on the lower surface of the washing / dehydrating tank 22 on the bottom wall side. The bottom wall of the washing / dehydrating tub 22 is formed with a recess 26 having a substantially circular recess corresponding to the shape of the pumping blade 25, and the pumping blade 25 is housed in this recess 26. Further, on the bottom wall of the washing / dehydrating tub 22, a plurality of water passage ports 22b are formed at the positions of the recesses 26.

By attaching a pumping cover 27 to the side wall of the washing / dehydrating tub 22, pumping channels 28 extending in the vertical direction are arranged at three locations at substantially equal intervals in the circumferential direction. The lower end of each pumping channel 28 is connected to the recess 26. A slit-shaped discharge port 27a is formed on the upper portion of each pumping cover 27.

A drive unit 30 for driving the washing / dehydrating tank 22, the rotary blade 24, and the pumping blade 25 is arranged on the outer bottom portion of the outer tank 20. In the washing step and the rinsing step, the drive unit 30 may rotate the rotary blade 24 and the pumping blade 25, or may rotate only the pumping blade 25, depending on the washing operation course. Further, the drive unit 30 integrally rotates the washing / dehydrating tank 22, the rotary blade 24, and the pumping blade 25 in the dehydration step. The drive unit 30 corresponds to the drive unit of the present invention. The detailed configuration of the drive unit 30 will be described later.

A cylindrical drainage port 20a is formed on the outer bottom of the outer tank 20. A drain valve 40 is connected to the drain port portion 20a. A drain hose 41 is connected to the drain valve 40. That is, a drainage path is formed by the drainage port portion 20a and the drainage hose 41, and the drainage valve 40 is arranged in this drainage path. When the drain valve 40 is opened, the water stored in the washing / dehydrating tank 22 and the outer tank 20 is discharged to the outside of the machine through the drain hose 41.

At the rear of the top plate 12, a water supply unit 50 for supplying tap water into the washing / dehydrating tank 22 is arranged. The water supply unit 50 has a water supply valve 51. The water supply valve 51 is connected to a water tap. When the water supply valve 51 is opened, tap water is introduced into the water supply unit 50 from the tap. The introduced tap water flows out into the washing / dehydrating tank 22 from the water injection port 52 of the water supply unit 50.

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

FIG. 2 is a vertical sectional view of a main part of the fully automatic washing machine 1 in which the bottom of the outer tub 20 and the drive unit 30 are shown. In addition, in FIG. 2, the illustration of the hanging rod 21 is omitted.

With reference to FIG. 2, the drive unit 30 includes a drive motor 100, a dehydration tank shaft 200, a pumping blade shaft 300, a rotary blade shaft 400, a bearing unit 500, a first transmission mechanism unit 600, and a second. A transmission mechanism unit 700, a first clutch mechanism unit 800, and a second clutch mechanism unit 900 are included.

The drive motor 100 is an outer rotor type DC brushless motor, and generates torque for driving the washing / dehydrating tank 22, the rotary blade 24, and the pumping blade 25. The drive motor 100 includes a rotor 110 and a stator 120. A motor shaft 130 is attached to the center of the rotor 110. The motor shaft 130 is rotatably supported by the support portion 150 via the vertical rolling bearings 141 and 142. The drive motor 100 may be another type of motor such as an inner rotor type DC brushless motor.

The dehydration tank shaft 200, the pumping blade shaft 300, and the rotary blade shaft 400 serve as the rotary shafts of the washing dehydration tank 22, the pumping blade 25, and the rotary blade 24, respectively.

The dehydration tank shaft 200 is formed by connecting three members, an upper part, an intermediate part, and a lower part. The dehydration tank shaft 200 is hollow, and the central portion thereof bulges outward to form the brake drum 201.

The pumping blade shaft 300 is inserted into the dehydration tank shaft 200. The upper part of the pumping blade shaft 300 protrudes upward from the dehydration tank shaft 200, and the lower part of the pumping blade shaft 300 protrudes downward from the dehydration tank shaft 200. The pumping blade shaft 300 is hollow, and the rotary blade shaft 400 is inserted therein.

The upper portion of the rotary blade shaft 400 projects upward from the pumping blade shaft 300, and the lower portion of the rotary blade shaft 400 projects downward from the pumping blade shaft 300.

The bearing unit 500 includes a mounting base 510 having a substantially rectangular planar shape, and a bearing case 520 mounted from below in the center of the mounting base 510. A circular bearing recess 511 is formed in the center of the upper surface of the mounting base 510. The bearing case 520 in which the rolling bearing 531 is arranged in the bearing recess 511 has a bottomed cylindrical shape in which the diameter of the bottom portion 521 is narrowed. A rolling bearing 532 is arranged on the bottom 521 of the bearing case 520. A flange portion 522 is formed at the upper end of the bearing case 520, and the flange portion 522 is screwed to the mounting base 510 (see FIG. 8). Further, a support portion 523 for supporting the lever shaft described later is formed at the upper end of the bearing case 520.

The dehydration tank shaft 200 into which the pumping blade shaft 300 and the rotary blade shaft 400 are rotatably inserted is rotatably supported by the bearing recess 511 of the mounting base 510 via a rolling bearing 531 at the upper portion thereof, and the lower portion thereof is a rolling bearing. It is rotatably supported by the bottom portion 521 of the bearing case 520 via 532. The brake drum 201 of the dehydration tank shaft 200 is housed in the bearing case 520.

The mounting base 510 is mounted on the bottom wall of the outer tank 20. The dehydration tank shaft 200 faces the inside of the outer tank 20. In the outer tub 20, the dehydration tub shaft 200 is fixed to the washing / dehydrating tub 22. Further, the pumping blade shaft 300 and the rotary blade shaft 400 face the inside of the washing / dehydrating tank 22. Inside the washing / dehydrating tank 22, the pumping blade shaft 300 is fixed to the pumping blade 25, and the rotary blade shaft 400 is fixed to the rotary blade 24.

A drive motor 100 is mounted on the mounting base 510 on the side of the bearing case 520 so that the motor shaft 130 faces downward. In addition, a drain valve 40 is attached to the mounting base 510 on the side opposite to the drive motor 100 with respect to the bearing case 520.

3A is a plan view of the first pulley 610, FIG. 3B is a bottom view of the first motor pulley 620, and FIG. 3C is a plan view of the second pulley 710. ..

With reference to FIGS. 2, 3 (a) and 3 (b), the first transmission mechanism unit 600 connects the first pulley 610, the first motor pulley 620, the first pulley 610, and the first motor pulley 620. Includes first belt 630 and.

The first pulley 610 is fixed to the lower part of the rotary blade shaft 400 exposed from the pumping blade shaft 300 below the outer tank 20. The first pulley 610 includes a disk-shaped pulley portion 611 and a clutch boss portion 612 attached to the upper center of the pulley portion 611. A plurality of engaging recesses 613 are formed on the upper end surface of the clutch boss portion 612 with a predetermined interval in the circumferential direction.

The first motor pulley 620 includes a cylindrical pulley portion 621, a cylindrical boss portion 622 integrally formed on the upper side of the pulley portion 621, and an annular flange portion 623 integrally formed on the lower side of the pulley portion 621. including. The first motor pulley 620 is rotatable together with the rotary blade shaft 400 and corresponds to the rotating body of the present invention.

As shown in FIG. 3B, the first motor pulley 620 is formed with an engaged portion 624 on the outer peripheral edge portion of the flange portion 623. The engaged portion 624 has a shape recessed from the outer peripheral edge of the first motor pulley 620, that is, the flange portion 623 toward the center. Both side edges 624a and 624b of the engaged portion 624 extending radially with respect to the flange portion 623 are inclined with respect to the radial central axis L of the engaged portion 624 so as to extend toward the outer peripheral edge of the flange portion 623. .. That is, the engaged portion 624 is a substantially trapezoidal recess.

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 has a boss portion 622 attached to the tip end portion of the motor shaft 130 via two rolling bearings 640. The first motor pulley 620 is smoothly rotated with respect to the motor shaft 130 by 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. The first belt 630 is hung 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 unit 800, the rotation of the drive motor 100 is transmitted to the rotary blade shaft 400 by the first transmission mechanism unit 600. At this time, the rotation of the drive motor 100 is decelerated according to the reduction ratio determined by the outer diameter ratio of the pulley portion 611 and the pulley portion 621.

With reference to FIGS. 2 and 3 (c), the second transmission mechanism 700 includes a second belt 730 connecting the second pulley 710, the second motor pulley 720, the second pulley 710, and the second motor pulley 720. And include.

The second pulley 710 has a disk shape and is fixed to the lower part of the pumping blade shaft 300 exposed from the dehydration tank shaft 200 below the outer tank 20. The second pulley 710 is located above the first pulley 610 so as to be aligned with the first pulley 610. A groove 711 on which the second belt 730 is hung is formed on the outer peripheral portion of the second pulley 710. Further, a plurality of through holes 712 are formed in the second pulley 710 with a predetermined interval in the circumferential direction. The through hole 712 has substantially the same shape and size as the engaging 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 721 on which the second belt 730 is hung 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 belt 730 is hung between the second pulley 710 and the second motor pulley 720.

The rotation of the drive motor 100 is transmitted to the pumping blade shaft 300 at the same speed by the second transmission mechanism unit 700.

The first clutch mechanism unit 800 switches between the first drive mode, the second drive mode, and the third drive mode. In the first drive mode, the rotation of the drive motor 100 is transmitted to the rotary blade shaft 400 via the first transmission mechanism unit 600, and is transmitted to the pumping blade shaft 300 via the second transmission mechanism unit 700, and further, rotation. The rotation of the blade shaft 400 is not regulated. In the second drive mode, the rotation of the drive motor 100 is not transmitted to the rotary blade shaft 400 via the first transmission mechanism unit 600, but is transmitted to the pumping blade shaft 300 via the second transmission mechanism unit 700, and further, rotation. The rotation of the blade shaft 400 is restricted. In the third drive mode, the rotation of the drive motor 100 is not transmitted to the rotary blade shaft 400 via the first transmission mechanism unit 600, but is transmitted to the pumping blade shaft 300 via the second transmission mechanism unit 700, and further, rotation. The rotation of the blade shaft 400 is not regulated.

The first drive mode and the second drive mode are performed when the second clutch mechanism unit 900 switches to the individual drive mode. The third drive mode is performed when the second clutch mechanism unit 900 switches to the integrated drive mode. In the individual drive mode, as will be described later, the rotary blade shaft 400 and the pumping blade shaft 300 are not integrated and can rotate individually. Therefore, in the first drive mode, the rotation of the drive motor 100 is transmitted to both the rotary blade 24 and the pumping blade 25. On the other hand, in the second drive mode, the rotation of the drive motor 100 is transmitted to the pumping blade 25 without being transmitted to the rotary blade 24. Further, in the second drive mode, the rotation of the rotary blade 24 is restricted. The first drive mode corresponds to the two-wing drive mode of the present invention, and the second drive mode corresponds to the one-wing drive mode of the present invention.

FIG. 4 is a vertical cross-sectional view of the drive unit 30 showing the periphery of the first clutch mechanism unit 800. 5 (a) is a perspective view of the first clutch mechanism portion 800, and FIG. 5 (b) is a perspective view of the first clutch mechanism portion 800 showing a state before the clutch lever 830 is attached to the lever support portion 850. It is a figure. 5 (c) is a perspective view of the latch lever 840, and FIG. 5 (d) is a front view of the cam 862.

With reference to FIGS. 4 and 5 (a) to 5 (d), the first clutch mechanism unit 800 includes a clutch body 810, a spring 820, a clutch lever 830, a latch lever 840, and a lever support portion 850. It includes a lever drive device 860 and a mounting plate 870. The clutch body 810, the spring 820, the clutch lever 830 and the lever drive device 860 have a first drive mode in which the rotation of the drive motor 100 is transmitted to both the rotary blade 24 and the pumping blade 25, and the rotation of the drive motor 100 is a rotary blade. A switching unit 800a for switching between the second drive mode and the second drive mode, which is transmitted to the pumping blade 25 without being transmitted to the 24, is configured. Further, the latch lever 840 and the lever drive device 860 constitute a regulation unit 800b for restricting the rotation of the rotary blade 24 in the second drive mode. The latch lever 840 corresponds to the regulator of the present invention, and the lever drive device 860 corresponds to the drive device of the present invention.

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 portion 811, a surrounding portion 812, and a rolling bearing 813. The clutch portion 811 has a substantially cylindrical shape, and is configured such that the outer diameter of the lower portion 811a is larger than the outer diameter of the upper portion 811b. The lower portion 811a is formed with an engaging recess 814 having an inner diameter substantially equal to the outer diameter of the boss portion 622 of the first motor pulley 620. A 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 625 is formed on the outer peripheral surface of the boss portion 622 of the first motor pulley 620 over the entire circumference.

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

The second spline 816 of the clutch portion 811 and the spline 131 of the motor shaft 130 are engaged with each other, and by such engagement, the clutch portion 811 can move with respect to the motor shaft 130 in the axial direction of the motor shaft 130 and the motor shaft. It becomes a state where it can rotate with 130.

The surrounding portion 812 is formed in an annular shape and surrounds the clutch portion 811 via a rolling bearing 813 so that the clutch portion 811 can rotate. The rolling bearing 813 allows the clutch portion 811 to rotate smoothly with respect to the surrounding portion 812. A pair of shaft portions 817 facing each other are formed on the outer peripheral surface of the surrounding portion 812.

The clutch body 810 fixes the first motor pulley 620 to the motor shaft 130 by moving the first spline 815 of the clutch portion 811 to the engagement position where the first spline 815 of the clutch portion 811 engages with the spline 625 of the boss portion 622 of the first motor pulley 620. Do the action. Further, the clutch body 810 operates to release the fixing of the first motor pulley 620 to the motor shaft 130 by moving to the release position where the engagement between the first spline 815 and the spline 625 is released. When the clutch body 810 is in the disengaged position, almost the entire clutch body 810 is housed 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 toward the first motor pulley 620 side, that is, the engagement position side.

The clutch lever 830 includes a lever body 831, a pair of arms 832, and an operation piece 833. The lever body 831 has a substantially square shape. An opening 831a is formed in the center of the lever body 831, and a shaft hole 831b is formed in the left and right ends. The pair of arms 832 extend from the lever 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 operation piece 833 is provided on the side of the lever body 831 opposite to the arm 832, and projects toward the lever drive device 860.

The latch lever 840 includes a lever body 841, an engaging portion 842, and an operation piece 843. The latch lever 840 is in contact with the flange portion 623 of the first motor pulley 620 to regulate the rotation of the first motor pulley 620, and is separated from the flange portion 623 to release the regulation of the rotation of the first motor pulley 620. And do.

The lever body 841 includes a cylindrical portion 842b having a shaft hole 841a and an arm portion 841c extending downward from the cylindrical portion 841b. The engaging portion 842 is provided at the tip of the arm portion 841c and has a shape corresponding to the engaged portion 624 of the first motor pulley 620, that is, has a substantially trapezoidal columnar shape. The operation piece 843 extends from the upper part of the lever body 841 toward the lever drive device 860. A hemispherical protrusion 843a is formed on the lower surface of the operation piece 843.

The lever support portion 850 is fixed to a pair of support pieces 851 extending from the mounting plate 870 and the tip portions of the pair of support pieces 851, and is a support shaft that penetrates the shaft hole 831b of the clutch lever 830 and the shaft hole 841a of the latch lever 840. 852 and included. The lever support portion 850 supports the clutch lever 830 and the latch lever 840 so as to be rotatable about the support shaft 852. On the lever support portion 850, springs 853 are arranged on both sides of the latch lever 840. The spring 853 is a torsion spring and urges the latch lever 840 in the rotational direction in which the engaging portion 842 approaches the flange portion 623 of the first motor pulley 620.

The lever drive device 860 includes a torque motor 861 and a cam 862. The torque motor 861 generates torque, which is the power of the cam 862. The cam 862 has a disk shape and is rotated about a horizontal axis by the torque of the torque motor 861. On the front surface of the cam 862, the outer and inner double ribs 862a and 862b provide an annular cam groove 863 that is close to an ellipse and a circular cam recess 864 that is located inside the cam groove 863 and is close to a D shape. It is formed. The centers of the cam groove 863 and the cam recess 864 are offset from the center of rotation of the cam 862. The operation piece 833 of the clutch lever 830 is housed inside the cam groove 863, and the operation piece 843 of the latch lever 840 is housed inside the cam recess 864. In the cam recess 864, the protrusion 843a of the operation piece 843 comes into contact with the inner rib 862b.

The lever drive device 860 is fixed to the mounting plate 870. The mounting plate 870 is fixed to the mounting base 510 of the bearing unit 500.

FIG. 6A is a diagram schematically showing a state in which the first clutch mechanism unit 800 has switched to the first drive mode. FIG. 6B is a diagram schematically showing a state in which the first clutch mechanism unit 800 has switched to the second drive mode. FIG. 6C is a diagram schematically showing a state in which the first clutch mechanism unit 800 has switched to the third drive mode.

When the cam 862 is rotated by the operation of the torque motor 861, the operation piece 833 of the clutch lever 830 is guided by the cam groove 863 and rotates downward or upward as shown in FIGS. 6A to 6C. , The arm 832 of the clutch lever 830 rotates in the opposite direction to the operation piece 833, that is, in the upward direction or the downward direction. Further, the operation piece 843 of the latch lever 840 is guided by the cam recess 864 to rotate downward or upward, and the engaging portion 842 of the latch lever 840 approaches the flange portion 623 of the first motor pulley 620. Or rotate in the direction away from each other.

In the first drive mode, as shown in FIG. 6A, in the clutch lever 830, the operation piece 833 is pushed up to the uppermost position by the cam groove 863, and the receiving portion 832a of the arm 832 is pushed down. As a result, the clutch body 810 is pushed down to the engaging position by the urging force of the spring 820, the first spline 815 and the spline 625 are engaged with each other, and the first motor pulley 620 is fixed to the motor shaft 130. It becomes a state. 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 pumping blade shaft 300 and the rotary blade shaft 400 via these pulleys. Further, in the latch lever 840, the operation piece 843 is pushed up to the uppermost position by the cam recess 864, and the engaging portion 842 rotates in a direction away from the flange portion 623 so as not to come into contact with the flange portion 623. In this state, the rotation of the first motor pulley 620 is not regulated, so that the rotation of the rotary blade shaft 400 and the rotary blade 24 is not regulated.

In the second drive mode, as shown in FIG. 6B, in the clutch lever 830, the operation piece 833 is pushed down to the lowest position by the cam groove 863, and the tip end portion 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 urging force of the spring 820, and the first spline 815 of the clutch body 810 and the spline 625 of the first motor pulley 620 are separated from each other with respect to the motor shaft 130. Therefore, the first motor pulley 620 is not fixed. The rotation of the motor shaft 130 is transmitted to the second motor pulley 720 and transmitted to the pumping blade shaft 300 via the pulley, but is not transmitted to the first motor pulley 620 and is transmitted to the rotary blade shaft 400 via the pulley. Not transmitted to. Further, in the latch lever 840, the operation piece 843 is pulled down to the lowest position by the cam recess 864 and the urging force of the spring 853, and the engaging portion 842 rotates in the direction approaching the flange portion 623 to the outside of the flange portion 623. It will be in contact with the peripheral edge. In this state, when the first motor pulley 620, that is, the flange portion 623 rotates and the engaged portion 624 comes to the position of the engaging portion 842, the engaging portion 842 is inserted into the engaged portion 624 from the outer peripheral edge side. As a result, the engaging portion 842 and the engaged portion 624 are engaged in the circumferential direction of the first motor pulley 620, and the rotation of the first motor pulley 620 is restricted. As a result, the rotation of the rotary blade shaft 400 and the rotary blade 24 is restricted.

In the third drive mode, as shown in FIG. 6C, the operation piece 833 is pushed down to the lowest position by the cam groove 863 in the clutch lever 830. As a result, as in the second drive mode, the first spline 815 of the clutch body 810 and the spline 625 of the first motor pulley 620 are separated from each other. As a result, the rotation of the motor shaft 130 is transmitted to the pumping blade shaft 300 via the second motor pulley 720, but is not transmitted to the rotary blade shaft 400 via the first motor pulley 620. Further, in the latch lever 840, the operation piece 843 is pushed up to the uppermost position by the cam recess 864. As a result, as in the first drive mode, the engaging portion 842 does not come into contact with the flange portion 623, the rotation of the first motor pulley 620 is not restricted, and the rotation of the rotary blade shaft 400 and the rotary blade 24 is not restricted.

FIG. 7 is a vertical cross-sectional view of the drive unit 30 showing the periphery of the second clutch mechanism unit 900. FIG. 8 is a bottom view of the drive unit 30 showing the periphery of the second clutch mechanism unit 900. FIG. 9 is a bottom view of the drive unit 30 in a state where the first pulley 610, the second pulley 710, and the clutch mechanism 910 are removed, showing the periphery of the second clutch mechanism portion 900. FIG. 10A is a perspective view of the clutch mechanism 910 turned upside down. 10 (b) is a perspective view of the clutch body 950, and FIG. 10 (c) is a perspective view of the clutch receiving portion 970 turned upside down.

Note that FIG. 8 shows a state in which the dehydration tank shaft 200, the pumping blade shaft 300, the rotary blade shaft 400, and the clutch body 950 are disconnected at a position above the second pulley 710 for convenience. For convenience, only the body of the bearing case 520 is shown in cross section.

With reference to FIGS. 7 to 10 (c), the second clutch mechanism unit 900 includes a clutch mechanism 910 and a drive device 920 for driving the clutch mechanism 910. An integrated drive mode in which the rotary blade 24, the pumping blade 25, and the washing / dehydrating tank 22 can be integrally rotated by the clutch mechanism 910 and the driving device 920, and the rotary blade 24 and the pumping blade 25 are provided with respect to the washing / dehydrating tank 22. The switch is made between the rotatable and separate drive modes.

Further, the second clutch mechanism unit 900 includes a brake mechanism 930 for braking the dehydration tank shaft 200 and an opening / closing mechanism 940 for opening / closing the drain valve 40. A drive device 920 is used to drive the brake mechanism 930 and the opening / closing mechanism 940.

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

The clutch receiving portion 970 has a cylindrical shape and is fixed to the bottom portion 521 of the bearing case 520. An annular uneven portion 971 is formed on the lower surface of the clutch receiving portion 970.

The clutch body 950 is arranged between the clutch receiving portion 970 and the second pulley 710 in the dehydration tank shaft 200. The clutch body 950 is formed in a cylindrical shape in which the outer diameter of the upper end portion is larger than the outer diameter of the other portion, and has a boss portion 951 inside. At the lower end of the clutch body 950, a plurality of engaging protrusions 952 projecting downward, that is, toward the second pulley 710, are formed at predetermined intervals in the circumferential direction. The engaging protrusion 952 has substantially the same cross-sectional shape as the engaging recess 613 and the through hole 712. Further, on the upper end portion of the clutch body 950, an annular uneven portion 953 that meshes with the uneven portion 971 of the clutch receiving portion 970 is formed on the inner peripheral surface. Further, a spline 954 is formed on the inner peripheral surface of the boss portion 951 over the entire circumference.

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

The spline 954 of the boss portion 951 and the spline 214 of the dehydration tank shaft 200 are engaged with each other, and by such engagement, the clutch body 950 can move and disengage the dehydration tank shaft 200 in the axial direction with respect to the dehydration tank shaft 200. It is in a state where it can rotate together with the water tank shaft 200.

The moving mechanism 960 includes a first spring 961, a first lever 962, a lever support portion 963, a relay wire 964, a second lever 965, a lever shaft 966, a second spring 967, and a connecting body 968. include. The moving mechanism 960 moves the clutch body 950 for switching between the integrated drive mode and the individual drive mode.

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

The first lever 962 includes a head portion 981 having a substantially semicircular arc shape along the outer peripheral surface of a portion below the upper end portion of the clutch body 950, and a lever portion 982 extending upward from the head portion 981. At the tip portions on both sides of the head portion 981, a pressing portion 983 that comes into contact with the upper end portion of the clutch body 950 from below and pushes the upper end portion upward is formed.

The lever support portion 963 includes a pair of support pieces 963a integrally formed with the clutch receiving portion 970, and a support shaft 963b fixed to the tip end portion of the pair of support pieces 963a and penetrating the lower end portion of the lever portion 982. The first lever 962 is supported so as to be rotatable about the support shaft 963b.

The relay wire 964 connects the first lever 962 and the second lever 965. A spring 964a is integrally formed at an intermediate position on the relay wire 964. One end of the relay wire 964 is attached to the upper end portion of the lever portion 982 of the first lever 962.

The lever shaft 966 is supported by the support portion 523 of the bearing case 520 and extends downward. A second lever 965 is rotatably attached to the lower part of the lever shaft 966. The second lever 965 is formed with an arm portion 965a extending in a direction away from the dehydration tank shaft 200. A mounting pin 965b is formed at an intermediate position of the arm portion 965a, and the other end of the relay wire 964 is attached to the mounting pin 965b. The lever shaft 966 is also used for the brake mechanism 930.

The second spring 967 is a torsion spring, which is attached to the lever shaft 966 and urges the second lever 965 so that the second lever 965 rotates in the direction in which the lever portion 982 of the first lever 962 is pulled.

The connecting body 968 is arranged between the drive device 920 and the drain valve 40, 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. Further, the connecting body 968 is provided with a first mounting portion 968c at the end on the drive device 920 side and a second mounting portion 968d 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 surface of the brake band 931. The brake band 931 is wound around the brake drum 201 of the dehydration tank shaft 200 in the bearing case 520. The bearing case 520 is formed with two holes 524 on the support portion 523 side. One end of the brake band 931 is extended from one hole 524 to the outside of the bearing case 520 and fixed to the bearing case 520 with screws 935. Further, the other end of the brake band 931 is extended from the other hole 524 to the outside of the bearing case 520 and fixed to the brake lever 932 with a pin 936.

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

The spring 933 is a torsion spring, which 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, the brake shoe 934 of the brake band 931 comes into contact with the brake drum 201, so that the rotation of the brake drum 201 is stopped.

The opening / closing mechanism 940 includes a working body 941 and a connecting rod 942. The actuating 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 operating body 941, and the other end is attached to the second mounting portion 968d of the connecting body 968. When the actuating body 941 and the connecting rod 942 move toward or away from the drain valve 40, the valve body 43 closes or opens the drain port 44 connected to the drain port portion 20a.

The drive device 920 includes a torque motor 921, a cam 922, and a connecting wire 923. The torque motor 921 generates torque, which is the power for operating the moving mechanism 960, the brake mechanism 930, and the opening / closing mechanism 940 of the clutch mechanism 910. The cam 922 has a disk shape and rotates about 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 attached to the mounting portion 924, and the other end is attached to the first mounting portion 968c of the connecting body 968.

In the separate drive mode, as shown in FIGS. 7 and 8, the lever portion 982 of the first lever 962 is pulled by the second lever 965 via the relay wire 964, and the head portion 981 of the first lever 962 is pushed up. It becomes a state. The pressing portion 983 of the head portion 981 contacts the clutch body 950 and pushes up the clutch body 950, and the uneven portion 953 of the clutch body 950 and the uneven portion 971 of the clutch receiving portion 970 mesh with each other. As a result, the dehydration tank shaft 200 is fixed to the bearing case 520 and cannot rotate, and the rotary blade shaft 400 and the pumping blade shaft 300 can rotate separately from the dehydration tank shaft 200. That is, the rotary blade 24 and the pumping blade 25 can rotate separately from the washing / dehydrating tank 22.

In the separate drive mode, the brake shoe 934 of the brake band 931 is in contact with the brake drum 201, and the dehydration tub shaft 200, that is, the washing / dehydration tub 22 is also stopped by the brake mechanism 930. Further, the drain valve 40 is in a state where the valve body 43 is closed by the opening / closing mechanism 940.

When switching from the separate drive mode to the integrated drive 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 and moved to the drive device 920 side. As a result, the second lever 965 rotates toward the drive device 920 against the urging force of the second spring 967, and is pushed by the relay wire 964 to rotate the first lever 962, and the head portion 981 thereof is rotated. Pushed down. As shown by the broken line in FIG. 7, the clutch body 950 is pushed down by the urging force of the first spring 961, the uneven portions 953, 971 are disengaged from each other, and the engaging protrusion 952 of the clutch body 950 is the first. 2 It penetrates the through hole 712 of the pulley 710 and engages with the engaging recess 613 of the first pulley 610. As a result, the rotary blade shaft 400 and the pumping blade shaft 300 are fixed to the dehydration tank shaft 200, and the dehydration tank shaft 200, the rotary blade shaft 400, and the pumping blade shaft 300 can rotate integrally. That is, the washing / dehydrating tank 22, the rotary blade 24, and the pumping blade 25 can rotate integrally.

In the integrated drive mode, when the coupling 968 moves to the drive device 920 side, the brake lever 932 rotates toward the drive device 920 side against the urging force of the spring 933, the brake band 931 loosens, and the brake shoe 934 is released. Move away from the brake drum 201. As a result, the dehydration tub shaft 200, that is, the washing / dehydration tub 22 is not stopped by the brake mechanism 930. Further, in the opening / closing mechanism 940, the operating 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.

In the fully automatic washing machine 1, washing operations of various operation courses are performed. The washing operation course includes a standard course for washing standard laundry and a delicate course for washing delicate laundry. In the washing operation, the washing step, the intermediate dehydration step, the rinsing step and the final dehydration step are executed in order.

In the washing step, the drive mode is switched to the separate drive mode by the second clutch mechanism unit 900. As a result, the washing / dehydrating tub 22 is fixed so as not to rotate, and the rotary blade 24 and the pumping blade 25 are in a state where they can rotate separately with respect to the washing / dehydrating tub 22. The switching to the separate drive mode is performed when the final rinsing process in the previous washing operation is completed. At this time, the brake mechanism 930 brakes the washing / dehydrating tub 22 in which the drive motor 100 is stopped and the washing / dehydrating tank 22 is coasting.

Further, in the washing step, when the washing course is a standard course, the drive mode is switched to the first drive mode by the first clutch mechanism unit 800. As a result, the rotation of the drive motor 100 is transmitted to both the rotary blade 24 and the pumping blade 25. Further, the rotation of the rotary blade 24 is not regulated.

The drive motor 100 rotates to the right and to the left with a stop in the state where water containing detergent is stored in the washing / dehydrating tub 22. As a result, the rotary blade 24 and the pumping blade 25 rotate to the right and to the left with the stop in between. At this time, the pumping blade 25 rotates at a higher speed than the rotary blade 24.

A vortex water flow is generated in the washing / dehydrating tank 22 due to the rotation of the rotary blade 24. The laundry in the washing / dehydrating tub 22 is washed by being agitated or rubbing against each other by the action of the vortex water flow. The laundry is also washed by being rubbed by the blades 24a of the rotary blade 24.

When the pumping blade 25 rotates, the water between the washing / dehydrating tank 22 and the outer tank 20 is sucked into the recess 26 through the water passage port 22b. The sucked water is pushed out by the pumping blade 25 and sent to each pumping channel 28, flows in each pumping channel 28, and is discharged from each discharge port 27a into the washing / dehydrating tank 22. The laundry on the water surface side in the washing / dehydrating tub 22 is beaten with falling water to be washed. In the washing process, the washing performance by the detergent is also exhibited.

In this way, standard laundry is well washed by the action of swirl flow and the like due to the rotation of the rotary blade 24 and the circulating discharge of water by the rotation of the pumping blade 25.

On the other hand, in the washing step, when the washing course is a delicate course, the drive mode is switched to the second drive mode by the first clutch mechanism unit 800. As a result, the rotation of the drive motor 100 is not transmitted to the rotary blade 24 but is transmitted to the pumping blade 25. Further, the rotation of the rotary blade 24 is restricted.

The drive motor 100 rotates in a state where water containing detergent is stored in the washing / dehydrating tub 22. As a result, the pumping blade 25 rotates with the rotary blade 24 stopped. At this time, the drive motor 100 and the pumping blade 25 may rotate continuously in any one of the right direction and the left direction, or may rotate intermittently. When the drive motor 100 and the pumping blade 25 rotate intermittently, they may rotate to the right and to the left with a stop.

The laundry in the washing / dehydrating tank 22 is washed by being beaten with water containing detergent discharged from the discharge port 27a of the pumping channel 28. Further, a water flow is generated in the washing / dehydrating tub 22 from the water surface side to the bottom side, and the water passes through the laundry, so that the laundry is washed. At this time, since the rotary blade 24 is not rotationally driven by the drive motor 100, no vortex water flow is generated and the laundry is less likely to rub against each other. Further, it is unlikely that the laundry is rubbed by the blades 24a of the rotary blade 24.

Here, when the pumping blade 25 rotates, the force for rotating the rotary blade 24 is transmitted to the rotary blade 24 due to the viscosity of the water between the pumping blade 25 and the rotary blade 24. However, as described above, since the rotation of the rotary blade 24 is restricted, it is possible to prevent the rotary blade 24 from rotating with the rotation of the pumping blade 25.

Further, in the engaged portion 624 provided on the first motor pulley 620, both side edges 624a and 624b are inclined with respect to the central axis L. Therefore, when a large rotational force is applied to the rotary blade 24 for some reason and this rotational force is transmitted to the first motor pulley 620 to rotate the first motor pulley 620, the engaging portion 842 is engaged along the inclination. It is easily pushed outward from the joint portion 624, and the engagement between the engaging portion 842 and the engaged portion 624 is released. Therefore, a large load is less likely to be applied to the latch lever 840, and the regulation portion 800b is less likely to be damaged.

In this way, the delicate laundry is well washed by the circulating water discharge of water by the rotation of the pumping blade 25 so that the cloth damage is suppressed.

In the delicate course, it is also possible to effectively apply the circulating water to the laundry while moving the laundry little by little by performing intermittent rotation of the rotary blade 24 for a short time.

In the rinsing process, as in the washing process, when the washing course is a standard course, the rotary blade 24 and the pumping blade 25 rotate, and the standard laundry has an action such as a vortex flow due to the rotation of the rotary blade 24. It is well rinsed by the circulation and discharge of water by the rotation of the pumping blade 25. Further, when the washing course is a delicate course, only the pumping blade 25 rotates, and the delicate laundry is satisfactorily sooted so that the cloth damage is suppressed by the circulating water discharge of water due to the rotation of the pumping blade 25. ..

In the rinsing step, switching to the separate drive mode is performed immediately after the completion of the intermediate dehydration step, and the brake mechanism 930 brakes the washing / dehydrating tub 22 in which the drive motor 100 is stopped and the washing / dehydrating tub 22 is coasting.

In the intermediate dehydration step and the final dehydration step, the drive mode is switched to the integrated drive mode by the second clutch mechanism unit 900. As a result, the dehydration tank shaft 200, the pumping blade shaft 300, and the rotary blade shaft 400 are combined, and the washing dehydration tank 22, the rotary blade 24, and the pumping blade 25 can rotate integrally. Further, the drive mode is switched to the third drive mode by the first clutch mechanism unit 800. As a result, the rotation of the drive motor 100 is not transmitted to the rotary blade shaft 400 via the first transmission mechanism unit 600, but is transmitted to the pumping blade shaft 300 via the second transmission mechanism unit 700. The rotation of the rotary blade shaft 400 is not restricted.

When the integrated drive mode is switched to, the drain valve 40 is opened by the opening / closing mechanism 940. As a result, the water is drained from the inside of the washing / dehydrating tub 22 and the inside of the outer tub 20.

After the drainage is completed, the drive motor 100 rotates at high speed in one direction. Since there is no increase or decrease in the speed of the second transmission mechanism unit 700, the pumping blade shaft 300, the dehydration tank shaft 200 integrated with the pumping blade shaft 300, and the rotary blade shaft 400 rotate at the same speed as the drive motor 100. do. As a result, the washing / dehydrating tank 22, the rotary blade 24, and the pumping blade 25 rotate integrally at a high speed at the same speed as the drive motor 100. The laundry is dehydrated by the action of the centrifugal force generated in the washing / dehydrating tub 22.

<Effect of embodiment>
As described above, according to the present embodiment, the pumping blade 25 is rotated by the drive unit 30 without rotating the rotary blade 24, and water is discharged from the discharge port 27a between the washing / dehydrating tank 22 and the pumping channel 28. By circulating water, delicate laundry can be washed. Therefore, the delicate laundry damage caused by washing can be suppressed.

Moreover, in the second drive mode in which only the pumping blade 25 is rotated, the rotation of the rotary blade 24 is restricted by the regulating unit 800b. Therefore, when the pumping blade 25 rotates, the rotary blade 24 rotates even if the force for rotating the rotary blade 24 is transmitted due to the viscosity of the water between the pumping blade 25 and the rotary blade 24. Can be prevented.

Further, according to the present embodiment, when the mode is switched to the second drive mode, the latch lever 840 performs a restricting operation, and the rotation of the first motor pulley 620 is restricted. As a result, the rotation of the rotary blade shaft 400 is restricted, so that the rotary blade 24 is prevented from rotating even if a force for rotation is applied to the rotary blade 24.

Further, according to the present embodiment, the engaging portion 842 of the latch lever 840 is configured to engage with the engaged portion 624 at the outer peripheral edge portion of the first motor pulley 620 having a diameter larger than that of the rotor shaft 400. Therefore, the force applied to the latch lever 840 when the rotor 24 tries to rotate becomes small, and it is easy to prevent the rotor 24 from rotating.

Further, according to the present embodiment, in the engaged portion 624 provided on the first motor pulley 620, both side edges 624a and 624b are inclined with respect to the central axis L. Therefore, when the first motor pulley 620 rotates due to the application of a large rotational force, the engaging portion 842 is easily pushed outward from the engaged portion 624 along the inclination, and is engaged with the engaging portion 842. The engagement with the portion 624 is released. To. Therefore, a large load is less likely to be applied to the latch lever 840, and the regulation portion 800b is less likely to be damaged.

Further, according to the present embodiment, one lever drive device 860 performs a fixing operation and a fixing release operation by the clutch body 810 of the switching unit 800a and a regulation operation and a regulation release operation by the latch lever 840 of the regulation unit 800b. Therefore, the cost of the fully automatic washing machine 1 can be reduced.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and the like, and the embodiments of the present invention can be changed in various ways other than the above. be.

For example, in the above embodiment, the fixing operation and the fixing release operation by the clutch body 810 of the switching unit 800a and the regulation operation and the regulation release operation by the latch lever 840 of the regulation unit 800b are performed by one lever drive device 860. rice field. However, a drive device for performing the fixing operation and the fixing release operation by the clutch body 810 and a drive device for performing the regulation operation and the regulation release operation by the latch lever 840 are individually provided in the switching unit 800a and the regulation unit 800b, respectively. May be good.

Further, in the above embodiment, the rotation of the first motor pulley 620, which is a rotating body that rotates together with the rotary blade 24, is regulated by the regulating unit 800b. However, a configuration may be adopted in which the first pulley 610, which is a rotating body similar to the first motor pulley 620, is regulated by the regulating unit. Alternatively, instead of the pulley, a configuration may be adopted in which a dedicated rotating body regulated by the regulating portion is provided on the rotary blade shaft 400. Further, the regulating unit of the present invention regulates the rotation of the rotary blade 24 by restricting the rotation of any rotating portion of the drive path from the drive motor 100 to the rotary blade 24, not limited to the rotating body. It may also act directly on the rotor 24 to regulate its rotation.

Further, in the above embodiment, the regulating portion 800b brings the latch lever 840 into contact with the first motor pulley 620 and engages the engaging portion 842 with the engaged portion 624 of the first motor pulley 620 to engage the first motor pulley. By restricting the rotation of the 620, the rotation of the rotary blade 24 is restricted. However, the configuration of the regulation unit 800b is not limited to the above configuration. For example, the regulating portion 800b first sandwiches both sides of the outer peripheral edge portion of the first motor pulley 620, that is, the outer peripheral edge portion of the flange portion 623, by a pair of holding members having a friction material on the surface in contact with these surfaces. The configuration may be such that the rotation of the motor pulley 620 is restricted, that is, a configuration using a so-called disc brake method. In this case, the pair of sandwiching members are regulators that regulate the rotation of the rotating body.

Further, in the above embodiment, the pumping blade shaft 300 is composed of a single shaft without including a deceleration mechanism or a speed increase mechanism. However, the pumping blade shaft 300 includes an input shaft fixed to the second pulley 710, an output shaft fixed to the pumping blade 25, and a deceleration mechanism or a speed increasing mechanism provided between these shafts. It may be configured as such.

Further, in the above embodiment, the rotary blade shaft 400 is inserted into the pumping blade shaft 300. However, contrary to the above configuration, a configuration in which the pumping blade shaft 300 is inserted into the rotary blade shaft 400 may be adopted. In this case, since the pumping blade 25 becomes an obstacle, the rotary blade shaft 400 cannot be directly fixed to the rotary blade 24. Therefore, in this case, the rotary blade shaft 400 and the rotary blade 24 may be connected by a connecting portion including the pumping blade 25. The connecting portion is provided with an inlet and an outlet for water to flow in and out of the connecting portion when the pumping blade 25 rotates. Further, the second transmission mechanism unit 700 is arranged above the first transmission mechanism unit 600. When the pumping blade shaft 300 is inserted into the rotary blade shaft 400 in this way, the rotary blade shaft 400 is not a single shaft but an input shaft fixed to the first pulley 610. It may be configured to include an output shaft fixed to the rotary blade 24 and a deceleration mechanism or a speed increase mechanism provided between these shafts.

Further, in the above embodiment, the first clutch mechanism unit 800 is provided on the motor shaft 130 side. However, the first clutch mechanism portion 800 may be provided on the rotary blade shaft 400 side. In this case, the first pulley 610 is rotatable with respect to the rotor shaft 400, and the clutch body 810 is arranged on the rotor shaft 400. In this configuration, when switched to the second drive mode, the first pulley 610 slips and the rotary blade shaft 400 does not rotate, and when switched to the first drive mode, the rotary blade shaft 400 rotates together with the first pulley 610. do.

Further, if the switching unit 800a of the first clutch mechanism unit 800 can switch between the first drive mode and the second drive mode, it may have a configuration other than the configuration described in the above embodiment. good.

Further, in the above embodiment, the discharge port 27a is provided in the upper part of the pumping channel 28, but may be provided in another position such as the central part. Further, the discharge port 27a may have any shape. Further, the number of pumping channels 28 may be any number.

Further, in the above embodiment, the first transmission mechanism unit 600 is composed of the first pulley 610, the first motor pulley 620 and the first belt 630, and the second transmission mechanism unit 700 is the second pulley 710 and the second motor pulley. It consisted of a 720 and a second belt 730. However, the first transmission mechanism unit 600 may be composed of a first motor gear provided on the motor shaft 130 and a first gear provided on the rotary blade shaft 400 and meshing with the first motor gear, and the second transmission mechanism The portion 700 may be composed of a second motor gear provided on the motor shaft 130 and a second gear provided on the pumping blade shaft 300 and meshing with the second motor gear.

Further, in the above embodiment, an example in which the present invention is applied to the fully automatic washing machine 1 not equipped with the 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, various modifications of the embodiment of the present invention can be made as appropriate within the scope of the technical idea shown in the claims.

1 Fully automatic washing machine (washing machine)
20 outer tank
22 Washing and dehydrating tub
24 rotor blades
25 Pumping wings
27a Discharge port
28 Pumping channel
30 Drive unit (drive unit)
100 drive motor
130 motor shaft
400 Rotor shaft
620 First motor pulley (rotating body)
624 Engaged part
624a, 624b side edges
800 1st clutch mechanism
800a switching unit
800b Regulatory Department
810 clutch body
840 Latch lever (regulator)
842 Engagement part
860 lever drive device (drive device)
L central axis

Claims (4)

A washing and dehydrating tub that is rotatably arranged in the outer tub,
Rotor blades rotatably arranged at the bottom of the washing and dehydrating tub,
A pumping blade rotatably arranged between the bottom wall of the washing and dehydrating tank and the rotor blade,
A pumping channel provided on the side wall of the washing / dehydrating tank and through which water supplied by rotation of the pumping blade flows.
A discharge port at which water flowing through the pumping channel is discharged into the washing / dehydrating tank, and
The washing and dehydrating tank, the rotary blade, and a drive unit for driving the pumping blade are provided.
The drive unit
With the drive motor
Between the two-blade drive mode in which the rotation of the drive motor is transmitted to the rotor blade and the pumping blade, and the one-blade drive mode in which the rotation of the drive motor is transmitted to the pumping blade without being transmitted to the rotary blade. The switching part that switches with
A regulatory unit for regulating the rotation of the rotor in the one-blade drive mode, and the like.
A washing machine that features that. In the washing machine according to claim 1,
The drive unit
The rotary blade shaft, which is the rotary shaft of the rotary blade, and the rotary blade shaft,
Includes a rotating body that rotates with the rotor shaft.
The regulatory department
Includes a restricting body that touches the rotating body to regulate the rotation of the rotating body, and separates from the rotating body to release the restriction on the rotation of the rotating body.
A washing machine that features that. In the washing machine according to claim 2,
The restricting body includes an engaging portion and includes an engaging portion.
The rotating body includes an engaged portion with which the engaging portion engages in the rotation direction of the rotating body.
The engaged portion has a shape recessed from the outer peripheral edge of the rotating body toward the center.
The engaging portion is inserted into the engaged portion from the outer peripheral edge side of the rotating body.
The radially extending edges of the engaged portion of the rotating body are inclined with respect to the radial central axis of the engaged portion so as to extend toward the outer peripheral edge of the rotating body.
A washing machine that features that. In the washing machine according to claim 2 or 3.
The rotating body is provided on the motor shaft of the drive motor.
The switching unit is
The fixing operation of fixing the rotating body to the motor shaft so that the rotation of the motor shaft is transmitted to the rotating blade shaft via the rotating body, and the fixing of the rotating body to the motor shaft are released. Including the clutch body that performs the fixing release operation and
The drive unit
When the clutch body is switched to the two-wing drive mode, which is included in the switching unit and the regulation unit, the clutch body is made to perform the fixing operation and the regulation body is made to perform the regulation release operation, and the one-wing drive mode is performed. When the clutch body is switched to, the clutch body includes a drive device for causing the restricting body to perform the fixing release operation and the restricting body to perform the restricting operation.
A washing machine that features that.

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