WO2020063573A1 - 洗衣机 - Google Patents

洗衣机 Download PDF

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Publication number
WO2020063573A1
WO2020063573A1 PCT/CN2019/107471 CN2019107471W WO2020063573A1 WO 2020063573 A1 WO2020063573 A1 WO 2020063573A1 CN 2019107471 W CN2019107471 W CN 2019107471W WO 2020063573 A1 WO2020063573 A1 WO 2020063573A1
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WO
WIPO (PCT)
Prior art keywords
blade
pulsator
washing
water
movable blade
Prior art date
Application number
PCT/CN2019/107471
Other languages
English (en)
French (fr)
Inventor
山内智博
Original Assignee
青岛海尔洗衣机有限公司
Aqua株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 青岛海尔洗衣机有限公司, Aqua株式会社 filed Critical 青岛海尔洗衣机有限公司
Priority to CN201980054653.9A priority Critical patent/CN112585312B/zh
Publication of WO2020063573A1 publication Critical patent/WO2020063573A1/zh

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F17/00—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid
    • D06F17/06—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid by rotary impellers
    • D06F17/10—Impellers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry 
    • D06F23/04—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry  and rotating or oscillating about a vertical axis

Definitions

  • the invention relates to a washing machine.
  • a so-called scroll-type washing machine is provided with a pulsator at the bottom of a washing and dewatering tub so as to be rotatable.
  • the rotation of the pulsator generates a water flow in the washing and dewatering tub, and the laundry is stirred by the water flow.
  • the pulsator itself with the laundry, the laundry is stirred or rubbed. In this way, washing is performed in the washing dehydration tub.
  • the pulsator repeatedly rotates to the right and left.
  • the laundry In the lower part of the washing and dehydrating tub near the pulsator, the laundry is easily exposed to strong water flow, and easily contacts the pulsator. Therefore, when a large amount of laundry is put into the washing and dehydrating tub, the laundry on the lower side is easily washed and the laundry on the upper side is not easily washed.
  • the upper laundry and the lower laundry are not easily interchangeable. Therefore, in this case, uneven washing is likely to occur in the laundry, or a large amount of cleaning power is given to the laundry staying on the lower side, thereby causing cloth damage to the laundry.
  • the existing washing machine for example, when the pulsator is rotated to the right and left, the operating time of the pulsator is changed or the intensity of the water flow generated by the pulsator is changed, so that the activity of the laundry becomes relatively less Regular or complicated, so that the up and down of the laundry can be easily exchanged.
  • Patent Document 1 describes a washing machine in which a surface on one side of a blade of a pulsator facing one rotation direction is set as an upright surface, and a surface facing the other rotation direction is set as an inclined surface. Surface to change the intensity of the water flow generated by the pulsator when rotating in one of the rotation directions and in the other.
  • Patent Document 1 Japanese Patent Laid-Open No. 2015-146897
  • an object of the present invention is to provide a washing machine capable of reducing uneven washing and damage to cloth by using a structure different from that of a conventional pulsator, thereby improving washing performance.
  • a washing machine includes a washing tub to receive laundry, a pulsator disposed at the bottom of the washing tub, and a driving unit to drive the pulsator.
  • the pulsator includes: a base portion; a blade portion disposed on a disposition surface provided on a surface of the base portion, and a protruding height protruding from the disposition surface is variable; and a variable mechanism portion capable of rotating according to the rotation of the pulsator The direction changes the protruding height of the blade portion; and a plurality of lifting blades are provided on the back side of the base portion and extend radially from the center side of the base portion toward the outer peripheral side.
  • a receiving chamber for receiving the ascending blade is formed, and the receiving chamber is connected to a circulating water path.
  • An outlet is formed in the circulating water path, and the outlet is used to return the water transported into the circulating water path to the washing tub by a lifting effect generated by the rotation of the lifting blade.
  • the ascending blade has a shape in which when the pulsator rotates in a rotation direction in which the blade portion becomes lower, the water repellent surface of the water repellent is recessed in a direction opposite to the rotation direction.
  • the blade portions with the high protruding height disappear or decrease.
  • the protrusion height of a blade part can change according to the rotation direction of a pulsator.
  • the laundry is liable to move irregularly or complicatedly in the washing tub, and therefore, it is easy to exchange the laundry up and down. Accordingly, it is expected to reduce uneven washing and damage to the cloth.
  • the rotation speed and the rotation amount of the pulsator are easily increased, and the rotation speed and the rotation amount of the lift blade are easily increased.
  • the rising blade has a shape in which the water repellent water-repellent surface is recessed in a direction opposite to the direction of rotation when the pulsator rotates in a direction in which the blade portion becomes lower, when the pulsator rotates in the direction of rotation,
  • the water-lifting blades can easily stir the water in the containment chamber. As the speed and rotation of the water-lifting blades increase, the water-lifting effect of the water-lifting blades greatly increases. This can greatly increase the amount of circulating water between the circulating water path and the washing tub during the rotation of the pulsator.
  • the washing machine according to this aspect may be configured such that the rising blade has a shape that extends straight from a center side to a peripheral side of the base portion, and is bent toward a rotation direction side where the blade portion becomes lowered midway.
  • the blade portion may be configured to be held on the base portion so as to be movable between a first position and a second position where the protruding height becomes higher than the first position.
  • the variable mechanism portion may be configured to include a rotating portion disposed on a back side of the base portion, and the driving portion may be opposed to the base portion in a first direction and a second direction opposite to the base portion. Rotational driving; and a moving part provided at a position of the rotating part corresponding to the blade part, and causing the blade part to move from the first position to the rotating part as the rotating part rotates in the first direction.
  • the base portion may be configured to include a first abutting portion and a second abutting portion, the first abutting portion being in contact with the rotating portion when the blade portion is moved to the second position, the The second abutting portion comes into contact with the rotating portion when the blade portion moves to the first position.
  • the rotating portion is in contact with the first abutting portion and the second abutting portion, the base portion and the rotating portion are rotated integrally, and the pulsator is respectively moved in the first direction and the direction. The second direction rotates.
  • the driving portion can switch the protruding height of the blade portion and the rotation of the pulsator at the same time. Therefore, reduction in component cost and the like can be achieved.
  • the lifting blade may be provided in a region other than the movable region of the rotating portion on the rear surface of the base portion.
  • the plurality of rising blades will not interfere with the rotating portion and will not hinder the movement of the rotating portion.
  • an inclined surface may be provided in the moving portion.
  • a lifting portion is provided in the blade portion, the lifting portion is in contact with the inclined surface, and the blade portion is moved along the inclined surface when the blade portion moves from the first position to the second position. Ascending and descending along the inclined surface when the blade portion moves from the second position to the first position.
  • the lifting part rises along the inclined surface of the moving part, so that the protruding height of the blade part becomes higher.
  • the lifting part moves The inclined surface of the portion is lowered, so that the protruding height of the blade portion becomes low.
  • a washing machine can be provided, which can reduce uneven washing and damage to the cloth, and can improve the washing performance.
  • FIG. 1 is a side sectional view of the fully automatic washer-dryer according to the embodiment.
  • FIG. 2 is a rear perspective view of the upper part of the fully automatic washer-dryer according to the embodiment.
  • 3 (a) and 3 (b) are perspective views of the pulsator according to the embodiment as viewed from above.
  • FIG. 4 is an exploded perspective view of the pulsator according to the embodiment as viewed from above.
  • FIG. 5 is an exploded perspective view of the pulsator according to the embodiment as viewed from below.
  • FIG. 6 is a front view of a back side of a base portion according to the embodiment.
  • FIG. 7 (a) is a perspective view of the movable blade portion viewed from above in the embodiment
  • FIG. 7 (b) is a perspective view of the movable blade portion viewed from above in the embodiment
  • FIG. 7 (c) is a perspective view of the movable blade portion of the embodiment as viewed from the front and bottom
  • FIG. 7 (d) is a perspective view of the lifting rod of the embodiment.
  • FIG. 8 (a) is a cross-sectional view showing the periphery of one movable blade portion of the pulsator in a state where the two movable blade portions do not protrude from the arrangement surface according to the embodiment
  • FIG. 8 (b) illustrates the embodiment A cross-sectional view of the periphery of one movable blade portion of the pulsator in a state where the two movable blade portions protrude from the arrangement surface.
  • FIG. 9 is a diagram for explaining a configuration of a pulsator according to a modification.
  • 10 (a) and 10 (b) are diagrams for explaining a configuration of a pulsator according to a modified example.
  • FIG. 1 is a side sectional view of the fully automatic washer-dryer 1 according to the present embodiment.
  • FIG. 2 is a rear perspective view of the upper portion of the fully automatic washer-dryer 1 according to the present embodiment.
  • the fully-automatic washer-dryer 1 includes a cabinet 10 constituting an appearance.
  • the cabinet 10 includes a square cylindrical body portion 11 with upper and lower surfaces open; an upper panel 12 covering the upper surface of the body portion 11; and a foot stand 13 supporting the body portion 11.
  • the upper panel 12 is formed with an outer loading port 14 for loading laundry.
  • the outside insertion opening 14 is covered by a freely openable and closable upper cover 15.
  • the outer tub 20 is elastically suspended and supported by four suspension rods 21 having a vibration isolation device.
  • the outer tub 20 includes an outer tub main body 22a having an approximately cylindrical shape with an open upper surface, and an outer tub cover 22b that forms an upper surface of the outer tub 20 by covering the upper surface of the outer tub main body 22a.
  • the outer tub cover 22b which is the upper surface of the outer tub 20, has an inner input port 22c for inputting laundry at a position corresponding to the outer input port 14.
  • the inner inlet 22c is covered with an outer bucket lid 23 so as to be openable and closable.
  • a substantially cylindrical washing and dewatering tub 24 having an open upper surface is arranged inside the outer tub 20 inside the outer tub 20 .
  • a large number of dewatering holes 24a are formed on the inner peripheral surface of the washing and dewatering tub 24 throughout the entire circumference.
  • a balance ring 25 is provided on the upper part of the washing and dewatering tub 24. It should be noted that the washing and dehydrating tub 24 corresponds to the washing tub of the present invention.
  • a pulsator 26 is disposed on the bottom of the washing and dewatering tub 24. Further, a storage chamber 24b is provided at the bottom of the washing and dewatering tub 24 to accommodate a plurality of water-lifting blades 114 provided on the back side of the pulsator 26.
  • a circulation water path 27 extending up and down along the inner peripheral surface of the washing and dewatering tub 24 is connected to the storage chamber 24b.
  • An outlet 27 a for water is provided at an upper end portion of the circulation water path 27.
  • a wire filter may be attached to this outlet 27a.
  • another outlet may be provided in the circulating water path 27 independently of the outlet 27a, and a wire cutting filter may be connected to the other outlet.
  • a drive unit 30 that generates torque for driving the washing and dewatering tub 24 and the pulsator 26 is arranged on the outer bottom of the outer tub 20.
  • the driving unit 30 corresponds to a driving unit of the present invention.
  • the driving unit 30 includes a driving motor 31, a transmission mechanism portion 32, a wing shaft 33, and a dehydration bucket shaft 34.
  • the wing shaft 33 is connected to the pulsator 26, and the dehydration bucket shaft 34 is connected to the washing and dehydration bucket 24.
  • the transmission mechanism portion 32 has a clutch mechanism. By switching the clutch mechanism, the torque of the drive motor 31 is transmitted to the wing shaft 33 and the pulsator 26 is rotated only during the washing process and the rinsing process.
  • the torque of the drive motor 31 is transmitted to the wing shaft 33 and the dehydration tub shaft 34 to rotate the pulsator 26 and the washing and dehydration tub 24 integrally.
  • the transmission mechanism unit 32 has a reduction mechanism, and the rotation of the drive motor 31 is reduced according to the reduction ratio of the reduction mechanism during the washing process and the rinsing process, and is transmitted to the wing shaft 33.
  • a drain opening portion 20 a is formed on the outer bottom of the outer tub 20.
  • a drain valve 40 is provided in the drain opening portion 20a.
  • the drain valve 40 is connected to a drain hose 41. When the drain valve 40 is opened, the water stored in the washing and dewatering tub 24 and the outer tub 20 is discharged to the outside through the drain hose 41.
  • a drying device 50 and a water supply device 60 are disposed above the outer tub 20 in the rear portion of the cabinet 10.
  • the drying device 50 and the water supply device 60 are mounted on a fixing plate 16 disposed at the rear of the upper surface of the main body portion 11, and are covered by the upper panel 12.
  • the drying device 50 dries the laundry stored in the washing and dewatering tub 24.
  • the drying device 50 includes a heater and a circulation air path 50 a provided with a blower fan.
  • the circulation air path 50 a is connected to the inside of the outer tub 20 through an air intake duct 71 and an air exhaust duct 72.
  • the air intake duct 71 and the air exhaust duct 72 are flexible ducts, and include elastic materials such as rubber, and a middle portion has a serpentine portion (not shown).
  • the warm air generated by the operation of the heater and the blower fan is discharged from the circulating air path 50 a and is introduced into the outer tub 20 through the air intake duct 71. Furthermore, the warm air discharged from the outer tub 20 is introduced into the circulation air path 50 a through the exhaust duct 72. In this way, the warm air circulates between the circulation air path 50 a and the outer tub 20.
  • the drying device 50 performs a circulation drying operation based on the circulation of the warm air and an exhaust drying operation that thereafter discharges a part of the circulation warm air to the outside.
  • the upper panel 12 is provided with an air exhaust port 51, which is composed of a plurality of exhaust holes and discharges warm air.
  • a water supply port 61 of the water supply device 60 that is exposed to the outside is connected to an external water supply hose (not shown) extending from a faucet.
  • the water supply device 60 includes a water supply valve and a detergent container. When the water supply valve is opened, the tap water from the faucet is supplied into the outer tub 20 together with the detergent stored in the detergent container.
  • the water supply device 60 may include a bath water pump.
  • a washing operation In the full automatic washer-dryer 1, a washing operation, a washing and drying operation, or a drying operation in various operation modes are performed.
  • the washing operation is a washing-only operation, and the washing process, the intermediate dehydration process, the rinsing process, and the final dehydration process are sequentially performed.
  • the washing and drying operation is a continuous washing-to-drying operation, followed by a drying process after the final dehydration process.
  • the drying operation is a drying-only operation, and only a drying process is performed.
  • the pulsator 26 rotates leftward and rightward in a state where water is stored in the washing and dehydrating tub 24.
  • the laundry in the washing dehydration tub 24 is washed or rinsed by the action of water flow or the like generated by the rotation of the pulsator 26.
  • the washing and dehydrating tub 24 and the pulsator 26 are integrally rotated at high speed.
  • the laundry is dehydrated by the centrifugal force generated in the washing dehydration tub 24.
  • the internal air circulation drying process is performed first, and then the external air introduction drying process is performed.
  • the drying device 50 performs a circulation drying operation, so that warm air circulates between the circulation air path 50 a and the outer tub 20.
  • the pulsator 26 rotates, and the laundry is dried by circulating warm air while being stirred.
  • the process is switched to an external air introduction drying process.
  • the drying device 50 performs an exhaust air drying operation, introduces external air into the circulating air path 50a, and exhausts part of the circulating warm air from the circulating air path 50a. Since the water evaporated from the laundry is effectively discharged from the inside of the outer tub 20 to the outside of the cabinet 10, the inside of the outer tub 20 becomes easy to dehumidify, and drying of the laundry is promoted.
  • FIGS. 3A and 3B are perspective views of the pulsator 26 as viewed from above in the present embodiment.
  • Fig. 3 (a) shows the state when the pulsator 26 is rotated to the left when viewed from above
  • Fig. 3 (b) shows the state when the pulsator 26 is rotated to the right when viewed from above.
  • the pulsator 26 includes a base portion 100, two movable blade portions 200, and a variable mechanism portion 300.
  • the base portion 100 is provided with two fixed blade portions 130, and the movable blade portions 200 are arranged on the arrangement surface 100a which is the top surface of each fixed blade portion 130 so as to be able to change the protruding height protruding from the arrangement surface 100a.
  • the variable mechanism part 300 can change the protruding height of each movable blade part 200 according to the rotation direction of the pulsator 26.
  • the movable blade part 200 corresponds to the blade part of this invention.
  • the shape of the pulsator 26 is switched to the shape in which the two movable blade portions 200 protrude from the arrangement surface 100a and the two in accordance with the rotation direction of the pulsator 26.
  • the protrusion height is a predetermined height H1, for example, a height of about 30 mm.
  • the protrusion height is approximately 0.
  • FIG. 4 is an exploded perspective view of the pulsator 26 viewed from above according to the present embodiment.
  • FIG. 5 is an exploded perspective view of the pulsator 26 viewed from below according to the present embodiment.
  • FIG. 6 is a front view of the back side of the base portion 100 according to the present embodiment.
  • the base portion 100 includes a resin material such as polypropylene, and includes a main body portion 110 having an approximately disc shape, an attachment portion 120 to which the variable mechanism portion 300 is attached, and two fixed blade portions 130.
  • the attachment portion 120 and the fixed blade portion 130 are integrally formed with the main body portion 110.
  • a circular concave surface 112 is formed on the surface of the main body portion 110 inside the flat outer peripheral surface 111.
  • the concave surface 112 is formed with a plurality of water discharge holes 113 penetrating the front and back surfaces. When draining water from the washing and dewatering tub 24, that is, the outer tub 20, the water stored in the concave surface 112 is discharged through the drain hole 113.
  • a plurality of rising blades 114 extending radially from the center side toward the outer peripheral side are provided at locations other than the attachment portion 120 and the two fixed blade portions 130.
  • the plurality of lifting blades 114 are stored in the storage chamber 24 b in the washing and dewatering tub 24.
  • Each of the ascending blades 114 has a right water-repellent surface 114a that repels water when the pulsator 26 rotates in the right direction, and a left water-repellent surface 114b that repels water when the pulsator 26 rotates in the left direction.
  • the right water repellent surface 114a corresponds to the water repellent surface of the present invention.
  • Each of the ascending blades 114 has a shape that extends straight from the center side to the outer peripheral side and is curved to form a circular arc toward the rightward rotation direction side of the pulsator 26 midway.
  • the right water-repellent surface 114 a of each of the rising blades 114 has a shape that is recessed in the left direction, which is the direction opposite to the direction of rotation.
  • the right direction is a rotation direction in which the two movable blade portions 200 are lowered, that is, the protruding length thereof is zero.
  • the attachment portion 120 bulges upward from the concave surface 112 at the central portion of the main body portion 110.
  • a substantially circular attachment recess 121 is formed on the back side of the attachment portion 120 and recessed upward.
  • a circular opening portion 122 is formed in a central portion of the top surface of the attaching portion 120, and an annular groove portion 123 is formed around the opening portion 122.
  • An annular sliding rib 124 is formed in the attachment recess 121 at a position on the back side of the groove 123.
  • a sliding wall portion 115 formed in a circular arc shape concentrically with the attaching recessed portion 121 is provided on the back surface of the main body portion 110.
  • the two fixed blade portions 130 are provided on the concave surface 112 of the main body portion 110 so as to face each other across the attachment portion 120.
  • the orientations of the two fixed blade portions 130 are set to be opposite directions, that is, the same orientation is set in the circumferential direction of the base portion 100.
  • Each of the fixed blade portions 130 has an approximately trapezoidal columnar shape, and is formed to be hollow on the back side.
  • the first side surface 130 a and the second side surface 130 b on the circumferential side of the base portion 100 of each of the fixed blade portions 130 are inclined so that the first side surface 130 a has a greater gradient than the second side surface 130 b.
  • each fixed blade portion 130 is formed as a substantially rectangular flat surface to constitute a placement surface 100 a.
  • the height position of the arrangement surface 100 a is the same as the height position of the outer peripheral surface 111 of the main body portion 110.
  • a substantially rectangular opening portion 131 is formed in the arrangement surface 100 a and occupies almost the entire arrangement surface 100 a.
  • a fixed-side unevenness group 132 including a plurality of irregularities continuous along the edge portion is provided by a plurality of ribs 132a arranged at predetermined intervals along the edge portion.
  • a pair of bearing portions 133 having a shaft hole 133 a are provided on the back side of each fixed blade portion 130 near the edge portion on the second side surface 130 b side of the opening portion 131.
  • the shaft hole 133a does not penetrate the bearing portion 133 for the bearing portion 133 on the center side, and the shaft hole 133a penetrates the bearing portion 133 on the bearing portion 133 on the outer peripheral side.
  • a first blocking rib 116 extending from the center side to the outer peripheral side is provided on the back surface of the main body portion 110 at a position slightly spaced from the first side surface 130a of each fixed blade portion 130. Further, on the back surface of the main body portion 110 at a position slightly spaced from the second side surface 130 b of each of the fixed blade portions 130, a second blocking rib 117 extending from the center side to the outer peripheral side is provided. A region between the first barrier rib 116 and the second barrier rib 117 on the back surface of the base portion 100 is a movable region of the rotating portion 310 described later. A plurality of rising blades 114 are provided in a region other than the movable region at the rear surface of the base 100. It should be noted that the first blocking rib 116 corresponds to the first contact portion of the present invention, and the second blocking rib 117 corresponds to the second contact portion of the present invention.
  • FIG. 7 (a) is a perspective view of the movable blade portion 200 as viewed from above in the present embodiment
  • FIG. 7 (b) is a perspective view of the movable blade portion 200 as viewed from above in the present embodiment
  • (C) is a perspective view of the movable blade part 200 as viewed from the front and bottom of this embodiment
  • (d) of FIG. 7 is a perspective view of the lifting rod 250 of this embodiment.
  • the two movable blade portions 200 are formed of a resin material such as polypropylene, and are formed in a substantially triangular prism shape with a hollow back side.
  • Each movable blade portion 200 includes two triangular side surfaces 210, a first inclined surface 220 and a second inclined surface 230 provided between the two side surfaces 210, and the other surface between the two side surfaces 210 is open.
  • the first inclined surface 220 is provided to have a greater gradient than the second inclined surface 230.
  • a pair of shaft fitting portions 240 having shaft holes 241 are provided on the back sides of the two side surfaces 210 of the movable blade portion 200 at corner portions that do not contact the first inclined surface 220.
  • the shaft hole 241 penetrates the shaft mounting portion 240 and the side surface 210.
  • a plurality of ribs 211 extending in a direction crossing the direction are formed at predetermined intervals in a direction from the first inclined surface 220 toward the shaft hole 241, thereby providing a movable structure including a plurality of irregularities.
  • the side uneven group 212 A blocking portion 213 is provided at a lower edge portion of each side surface 210 so as to protrude to the side surface.
  • a rib 214 having a shape corresponding to the bearing portion 133 of the fixed blade portion 130 is formed on each side surface 210 so as to surround the shaft hole 241.
  • the first inclined surface 220 is formed as a curved surface with the shaft hole 241 as a center of curvature.
  • a plurality of ribs 221 extending in the oblique direction are formed at predetermined intervals along a direction orthogonal to the oblique direction, so that the first inclined surface 220 is provided with a movable side unevenness including a plurality of unevennesses.
  • Group 222 In addition, on the first inclined surface 220, a plurality of hole portions 223 penetrating the front and back surfaces are formed near the top of the movable blade portion 200.
  • a lower end portion is formed as a curved surface with the shaft hole 241 as a center of curvature, and the other portions are formed as flat surfaces.
  • a plurality of ribs 231 extending in the oblique direction are formed at predetermined intervals in a direction orthogonal to the oblique direction, so that a movable-side uneven group 232 including a plurality of irregularities is provided.
  • a lifting rod 250 is mounted on the back side of the movable blade portion 200 substantially directly below the top of the movable blade portion 200 so as to be parallel to the first inclined surface 220.
  • the lifting rod 250 is formed by bending a round rod made of metal, for example, stainless steel, and includes a linearly extending lifting portion 251 and L-shaped insertion portions 252 provided on both sides of the lifting portion 251.
  • the friction coefficient of the lifting rod 250 is smaller than that of the movable blade portion 200.
  • a mounting portion 260 to which the lifting rod 250 is mounted is provided on the back side of the movable blade portion 200.
  • the mounting portion 260 includes two insertion hole portions 261 into which the insertion portion 252 of the lifting rod 250 is inserted, and a support portion 262 that supports the lifting portion 251 between the two insertion hole portions 261.
  • the shaft holes 241 of the pair of shaft mounting portions 240 of the movable blade portion 200 and the shafts of the pair of bearing portions 133 of the fixed blade portion 130 are fixed.
  • the holes 133a are aligned, and a shaft 270 made of metal, such as stainless steel, passes through the shaft holes 241, 133a from the outer peripheral side.
  • the shaft holes 241 and 133a can be easily aligned with each other, and the shaft 270 can be easily assembled.
  • the movable blade part 200 is rotatable about the shaft 270 with respect to the base part 100, and can move between a non-protruding position which does not protrude from the arrangement surface 100a, and a projecting position which protrudes from the arrangement surface 100a. It should be noted that the non-protruding position corresponds to the first position of the present invention, and the protruding position corresponds to the second position of the present invention.
  • the movable-side unevenness groups 212, 222, and 232 of the movable blade portion 200 mesh with the fixed-side unevenness group 132 of the fixed blade portion 130. Accordingly, it is not easy to sandwich foreign objects such as coins or jammed laundry in the gap between the movable blade portion 200 and the opening portion 131 of the fixed blade portion 130.
  • the variable mechanism portion 300 includes a rotating portion 310, a holder 320, a cap portion 330, a lower washer 340, and an upper washer 350.
  • the rotating portion 310, the bracket 320, and the cap portion 330 include a resin material such as polypropylene.
  • the rotating portion 310 has a structure in which a central hub portion 311 and two arm portions 312 extending in opposite directions from the hub portion 311 are integrally formed.
  • the hub portion 311 is an approximately cylindrical body with a closed top surface, and the back side is circularly recessed to constitute a boss attachment portion 313.
  • a metal mounting boss 360 is attached to the boss attachment portion 313.
  • a wing shaft 33 is mounted on the mounting boss 360.
  • the upper end of the mounting boss 360 penetrates the top surface of the hub portion 311 and protrudes slightly upward.
  • An annular rib 314 having an outer diameter substantially equal to the inner diameter of the opening portion 122 of the attachment portion 120 of the base portion 100 is formed on the top surface of the hub portion 311.
  • a plurality of screw holes 315 are formed on the top surface of the hub portion 311 inside the annular rib 314.
  • An arc-shaped sliding wall portion 316 is formed in the lower portion of the hub portion 311 at a portion where the arm portion 312 is not formed.
  • a metal sliding plate 370 is mounted on the surface of the sliding wall portion 316, for example, stainless steel. The friction coefficient of the slide plate 370 is smaller than that of the rotating portion 310.
  • the two arm portions 312 are provided with moving cams 317 at positions corresponding to the two movable blade portions 200, respectively.
  • the moving cam 317 is formed with an inclined surface 318 and a flat support surface 319 extending in a horizontal direction from the top of the inclined surface 318.
  • the inclined surfaces 318 of the moving cams 317 of the two arm portions 312 face opposite directions.
  • the moving cam 317 corresponds to the moving part of this invention.
  • the bracket 320 is formed in an approximately disc shape.
  • a circular recessed portion 321 is formed in a central portion of the bracket 320.
  • the back side of the recessed portion 321 protrudes downward.
  • An opening portion 322 is formed in a central portion of the bottom surface of the recessed portion 321 to which a distal end portion of the mounting boss 360 is inserted, and a plurality of screw holes 323 are formed around the opening portion 322.
  • an annular sliding rib 324 is formed on an outer peripheral portion of the back surface of the bracket 320.
  • the cap portion 330 is formed in an approximately disc shape and has an outer diameter substantially equal to the inner diameter of the recessed portion 321 of the holder 320.
  • the lower washer 340 and the upper washer 350 are annular plates made of metal. The friction coefficient of the lower washer 340 is smaller than that of the rotating portion 310, and the friction coefficient of the upper washer 350 is smaller than that of the bracket 320.
  • the rotation part 310 is attached to the back side of the base part 100 from below.
  • the hub portion 311 is inserted into the attachment recessed portion 121, and a lower washer 340 is sandwiched between the top surface of the hub portion 311 and the upper surface of the attachment recessed portion 121.
  • the sliding rib 124 on the upper surface of the attaching recess 121 is in contact with the lower washer 340.
  • an annular rib 314 on the top surface of the hub portion 311 is fitted into the opening portion 122 of the attachment portion 120.
  • the top surface of the hub portion 311 located inside the annular rib 314 faces upward through the opening portion 122.
  • the bracket 320 is attached to the top surface of the hub portion 311 located inside the annular rib 314 from above.
  • the back surface of the recessed portion 321 of the bracket 320 is in contact with the top surface of the hub portion 311, and the screw holes 323 and 315 are aligned with each other. Screws (not shown) are fixed to the two screw holes 323 and 315, and the bracket 320 is fixed to the hub portion 311.
  • An upper washer 350 is interposed between the bracket 320 and the groove portion 123 on the top surface of the attachment portion 120.
  • the sliding rib 324 on the back surface of the bracket 320 is in contact with the upper washer 350.
  • the cap portion 330 is assembled to the recessed portion 321 of the bracket 320, and the recessed portion 321 is covered by the cap portion 330.
  • the rotating part 310 can be within a range that does not contact the two first blocking ribs 116 and two second blocking ribs 117 provided on the back surface of the base part 100 with respect to the base part 100, that is, in the movable region, using the center axis of the base part 100 Rotate the center.
  • the rotating part 310 rotates relative to the base part 100, on the back side of the base part 100, the sliding plate 370 of the sliding wall part 316 of the hub part 311 slides on the inner surface of the sliding wall part 115 of the base part 100 and attaches the recessed part 121
  • the upper surface of the sliding rib 124 slides on the surface of the lower washer 340.
  • the sliding rib 324 on the rear surface of the bracket 320 slides on the surface of the upper washer 350. Thereby, the rotation part 310 rotates smoothly with respect to the base part 100.
  • FIG. 8 (a) is a cross-sectional view of the periphery of one movable blade portion 200 of the pulsator 26 showing a state where the two movable blade portions 200 do not protrude from the arrangement surface 100 a according to this embodiment
  • FIG. 8 (b) It is sectional drawing of the periphery of one movable blade part 200 of the pulsator 26 which shows the state which two movable blade parts 200 protruded from the arrangement surface 100a of this embodiment.
  • the movable blade portion 200 when the movable blade portion 200 is located at a non-protruding position that does not protrude from the arrangement surface 100 a, the movable blade portion 200 includes the lifting portion 251 of the lifting rod 250 on the inclined surface of the moving cam 317. The position below 318 is in contact with the moving cam 317.
  • the wing shaft 33 In the pulsator 26, the wing shaft 33 is connected to the rotating portion 310 of the variable mechanism portion 300 and is not connected to the base portion 100. Therefore, when the drive motor 31 rotates forward from this state, the torque of the drive motor 31 is transmitted to the rotating portion 310 via the wing shaft 33. When viewed from above, the rotating portion 310 rotates leftward.
  • the rotating portion 310 rotates in a leftward direction with respect to the base portion 100.
  • the arm portion 312 of the rotating portion 310 moves in a direction toward the first blocking rib 116.
  • the movable blade part 200 is pushed toward the moving cam 317 by the movement of the arm part 312, the base part 100 is not easily rotated due to the resistance of the water in the washing and dehydrating tub 24, and the like, as shown by the dotted arrow, the lifting part 251 rises along the inclined surface 318, and as a result, the movable blade portion 200 rotates upward with the shaft 270 as the center, and as shown by a one-dot chain line, the movable blade portion 200 protrudes from the arrangement surface 100a.
  • the lifting portion 251 includes a member having a smaller friction coefficient than the movable blade portion 200. Therefore, the lifting portion 251 is easily lifted and lowered smoothly along the inclined surface 318, and the movable blade portion 200 is easily turned smoothly.
  • the lifting portion 251 reaches the support surface 319 of the moving cam 317.
  • the movable blade part 200 reaches the protruding position, and is in the state which protruded most with respect to the arrangement surface 100a.
  • the blocking portion 213 of the movable blade portion 200 comes into contact with the back side of the arrangement surface 100a, and the movable blade portion 200 does not further rotate upward.
  • the lifting portion 251 is supported by the support surface 319 in an upward direction, that is, in a protruding direction.
  • the movable blade part 200 can be prevented from retreating to the arrangement surface 100a side.
  • the arm portion 312 abuts against the first blocking rib 116
  • the base portion 100 and the rotating portion 310 are integrated and rotate in the left direction. That is, as shown in FIG. 3 (a), the pulsator 26 rotates in the left direction.
  • the other movable blade part 200 is also in the state which protruded from the arrangement surface 100a.
  • the left direction corresponds to the first direction of the present invention.
  • the rotating portion 310 is rotated in the right direction when viewed from above.
  • the rotating portion 310 rotates in a rightward direction with respect to the base portion 100, and as shown by a solid arrow, the arm portion 312 moves in a direction toward the second blocking rib 117.
  • the lifting portion 251 descends along the inclined surface 318, and the movable blade portion 200 rotates downward as shown by a one-dot chain line, and the movable blade portion 200 retracts to the arrangement surface 100a side.
  • the arm portion 312 is in contact with the second blocking rib 117, and the base portion 100 and the rotating portion 310 are integrated to rotate in the right direction. That is, as shown in FIG. 3 (b), the pulsator 26 rotates in the right direction. It should be noted that the other movable blade portion 200 is also in a state where it does not protrude from the arrangement surface 100a.
  • the right direction corresponds to the second direction of the present invention.
  • the water in the washing and dehydrating tub 24 is stirred by the two fixed blade portions 130 and the movable blade portion 200.
  • the water in the washing and dewatering tub 24 is stirred only by the two fixed blade portions 130. Therefore, compared with the case where the two movable blade portions 200 protrude from the arrangement surface 100a, the water flow generated in the washing and dewatering tub 24 is extremely weak when the two movable blade portions 200 do not protrude from the arrangement surface 100a.
  • the pulsator 26 when the pulsator 26 is rotated in the left direction and the right direction, there is a great difference in the intensity of the water flow in the washing and dewatering tub 24. Accordingly, the laundry does not move regularly or monotonously in the left-right direction as the pulsator 26 rotates in the left-right direction, and it is easy to move irregularly or complicatedly. Therefore, the up-down interchange of the laundry becomes easy. Accordingly, it is expected to reduce uneven washing and damage to the cloth.
  • the lift blade 114 rotates in the left-right direction.
  • the water in the storage chamber 24b is sent to the circulating water path 27 by the lifting effect.
  • the water sent to the circulation water path 27 is discharged from the outlet 27 a toward the inside of the washing and dewatering tub 24. Thereby, the circulating water is dripped on the laundry which is located on the upper side in the washing dehydration tub 24.
  • the wire cuttings contained in the circulating water are collected by the wire cutting filter.
  • the two movable blade portions 200 do not protrude from the arrangement surface 100a. Therefore, compared with the case in which the pulsator 26 rotates in the left direction, it is applied to the pulsator due to contact with water and laundry. The load of 26 becomes smaller. Accordingly, when the drive motor 31 is controlled to be turned on and off in the same direction as in the left and right directions, the rotation speed of the pulsator 26 is generally increased in the right direction compared to the left direction, and the amount of rotation is easily increased. Therefore, as compared with the left direction, in the right direction, the rotation speed of the lift blade 114 is easily increased, and the amount of rotation is easily increased.
  • the ascending blade 114 has a shape in which when the pulsator 26 rotates in the right direction, the right water-repellent surface 114a that is water-repellent is recessed in the left direction. Therefore, when the pulsator 26 rotates in the right direction, the water-lifting blade 114 becomes easy to catch water like a paddle, and it becomes easy to pull water. Therefore, when the pulsator 26 is rotated in the right direction, as the rotation speed and the amount of rotation of the water-raising blade 114 increase, the water-raising effect produced by the water-raising blade 114 increases significantly.
  • the pulsator 26 when the pulsator 26 is rotated in the left-right direction, the overall amount of circulating water can be greatly increased, and the laundry in the washing and dewatering tub 24 can be fully wetted by the circulating water discharged from the circulating water path 27, and can fully utilize the water.
  • the circulating water path 27 is provided with a wire chip filter, the effect of collecting wire chips is improved.
  • the ascending blade 114 is formed in a shape that extends straight from the center side to the outer peripheral side of the base portion 100, and halfway, the two movable blade portions 200 are bent toward the right side, which is a rotation direction that does not protrude. Simpler. Therefore, it becomes easy to form the rising blade 114, and it becomes easy to manufacture the pulsator 26.
  • the rotating portion 310 when the rotating portion 310 is rotated to the left, the two movable blade portions 200 are moved to the protruding positions by the respective moving cams 317, and then the rotating portion 310 is in contact with the first blocking rib 116 to thereby rotate the portion 310.
  • the pulsator 26 rotates in the left direction.
  • the rotating portion 310 when the rotating portion 310 is rotated in the right direction, the two movable blade portions 200 are moved to the non-protruding position by the respective moving cams 317, and then the rotating portion 310 contacts the second blocking rib 117 so that the rotating portion 310 and the base portion 100
  • the pulsator 26 rotates to the right. In this way, the switching of the height of the movable vane portion 200 and the rotation of the pulsator 26 can be performed simultaneously by the driving unit 30, so that the cost of components and the like can be reduced.
  • the rotating portion 310 since the plurality of rising blades 114 are provided in a region other than the movable region of the rotating portion 310 at the rear surface of the base portion 100, the rotating portion 310 does not interfere with and does not hinder its movement.
  • the shape of the plurality of rising blades 114 formed on the back surface of the base portion 100 can be changed.
  • each of the ascending blades 114 has a shape that extends straight from the center side to the outer peripheral side, is bent toward the rightward rotation direction side of the pulsator 26 and extends straight. Therefore, similar to the above-mentioned embodiment, each of the rising blades 114 has a shape such that when the pulsator 26 rotates in the right direction in which the two movable blade portions 200 do not protrude from the arrangement surface 100a, the water-repellent right water-repellent surface 114a as a whole It is recessed in the left direction, which is opposite to the direction of its rotation.
  • each of the rising blades 114 has a shape including a straight portion 114 c extending straight from the center side to the outer peripheral side, and an arc-shaped portion 114 d continuous with the straight portion 114 c. Accordingly, as in the above-described embodiment, the right water-repellent surface 114 a of each of the rising blades 114 has a shape that is recessed leftward at a portion of the arc-shaped portion 114 d on the outer peripheral side.
  • each of the rising blades 114 has a shape including a straight portion 114 c extending straight from the center side to the outer peripheral side, and a V-shaped portion 114 e continuous with the straight portion 114 c. Accordingly, as in the above-mentioned embodiment, the right water-repellent surface 114 a of each of the rising blades 114 has a shape that is recessed in the left direction at a portion of the V-shaped portion 114 e on the outer peripheral side.
  • a fixed blade portion 130 is provided on the concave surface 112 of the base portion 100, and a top surface of the fixed blade portion 130 is an arrangement surface 100 a on which the movable blade portion 200 is disposed.
  • a flat surface is used instead of denting the surface of the base portion 100, a fixed blade portion 130 is not provided, and a part of the flat surface is used as a placement surface 100a on which the movable blade portion 200 is placed.
  • the pulsator 26 of the above-mentioned embodiment is provided with two movable blade portions 200, one or three or more movable blade portions 200 may be provided.
  • the plurality of movable blade portions 200 include a first movable blade portion and a second movable blade portion having a smaller number than the first movable blade portion.
  • the variable mechanism 300 switches to a state where the first movable blade portion protrudes and the second movable blade portion does not protrude.
  • the mode is switched to a mode in which the second movable blade portion protrudes and the first movable blade portion does not protrude, that is, a mode in which the number of the movable blade portions 200 having a long protruding length is small. This makes it easier to increase the rotation speed of the pulsator 26 and to increase the amount of rotation when rotating in the right direction than when rotating in the left direction.
  • all of the plurality of blade portions formed on the surface thereof are composed of blade portions including the fixed blade portion 130 and the movable blade portion 200.
  • the pulsator 26 may have a structure in which a part of the plurality of blade portions is composed of a blade portion including the fixed blade portion 130 and the movable blade portion 200 or a blade portion including only the movable blade portion 200.
  • a lifting rod 250 having a small friction coefficient is used in order to smoothly move the lifting portion 251 of the movable blade portion 200 on the inclined surface 318 of the moving cam 317.
  • a lifting rod 250 having a small friction coefficient is used in order to smoothly move the lifting portion 251 of the movable blade portion 200 on the inclined surface 318 of the moving cam 317.
  • a roller is provided as a lifting portion in the movable blade portion 200 and the roller rolls on the inclined surface 318.
  • a configuration may also be adopted in which a lifting member is not formed using a separate member such as the lifting rod 250, and a part of the movable blade portion 200 is moved on the inclined surface 318 as a lifting member.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

本发明提供一种洗衣机，其能减少清洗不均、布料损伤，能实现清洗性能的提高。波轮(26)包括：基部(100)；可动叶片部(200)，从基部(100)的配置面突出的突出高度可变；可变机构部(300)，能根据波轮(26)的旋转方向改变可动叶片部(200)的突出高度；以及多个扬水叶片(114)，设置于基部(100)的背侧，从基部(100)的中心侧向外周侧辐射状延伸。扬水叶片(114)具有如下形状：当波轮(26)向可动叶片部(200)变低的右方向旋转时，拨水的右拨水面(114a)向与该旋转方向相反的方向凹陷。

Description

洗衣机 技术领域
本发明涉及一种洗衣机。
背景技术
以往，所谓的涡旋式洗衣机在洗涤脱水桶的底部自由旋转地具备波轮。通过波轮旋转而在洗涤脱水桶内产生水流，洗涤物被该水流搅拌。此外，通过波轮自身与洗涤物接触，洗涤物被搅拌或摩擦。这样，在洗涤脱水桶内进行洗涤。洗涤时，波轮重复进行向右方向的旋转和向左方向的旋转。
在靠近波轮的洗涤脱水桶的下部，洗涤物容易受到强水流，并且容易与波轮接触。因此，在洗涤脱水桶内投入了较多洗涤物的情况下，下侧的洗涤物容易被洗净而上侧的洗涤物不容易被洗净。
在洗涤脱水桶内的洗涤物的活动比较规律或单调的情况下，上侧的洗涤物和下侧的洗涤物不容易互换。因此，这种情况下，容易使洗涤物产生清洗不均，或者清洗力较多地赋予停留在下侧的洗涤物，从而使洗涤物产生布料损伤。
因此，现有的洗衣机中，通过例如在波轮向右方向旋转时和向左方向旋转时改变波轮的工作时间或改变由波轮产生的水流的强度，使得洗涤物的活动变得比较不规律或者复杂，以便容易进行洗涤物的上下互换。
需要说明的是，专利文献1中记载了一种洗衣机，其通过将波轮的叶片上的面向其中一个旋转方向的一侧的面设置为直立面并将面向另一个旋转方向的面设置为倾斜面，从而在向其中一个旋转方向旋转时和向另一个旋转方向旋转时，改变由波轮产生的水流的强度。
如上所述，希望开发一种洗衣机中的波轮，其比起现有的波轮，在反复向右方向旋转和向左方向旋转时使洗涤物在洗涤脱水桶内的活动变得更加不规律或者复杂，从而容易促进洗涤物的上下互换，能减少清洗不均、布料损伤。
现有技术文献
专利文献
专利文献1：日本特开2015－146897号公报
发明内容
发明所要解决的问题
因此，本发明的目的在于提供一种洗衣机，其能通过不同于现有的波轮的结构来减少清洗不均、布料损伤，实现清洗性能的提高。
用于解决问题的方案
本发明的主要方案的洗衣机具备：洗涤桶，收容洗涤物；波轮，配置于所述洗涤桶的底部；以及驱动部，驱动所述波轮。其中，所述波轮包括：基部；叶片部，配置于设置在所述基部的表面的配置面，从该配置面突出的突出高度可变；可变机构部，能根据所述波轮的旋转方向改变所述叶片部的所述突出高度；以及多个扬水叶片，设置于所述基部的背侧，从所述基部的中心侧向外周侧辐射状延伸。在所述洗涤桶的底部，形成有收容所述扬水叶片的收容室，所述收容室与循环水路相连。在所述循环水路形成有出口，该出口用于通过由所述扬水叶片的旋转而产生的扬水作用，使被输送到所述循环水路内的水返回至所述洗涤桶内。所述扬水叶片具有如下形状：当所述波轮向所述叶片部变低的旋转方向旋转时，拨水的拨水面向与该旋转方向相反的方向凹陷。
例如，在具备多个所述叶片部的情况下，在所述波轮向所述叶片部变低的旋转方向旋转时，所述突出高度高的所述叶片部消失或变少。
根据上述结构，叶片部的突出高度能根据波轮的旋转方向而发生变化。如此一来，洗涤物在洗涤桶内容易不规律或者复杂地活动，因而，容易进行洗涤物的上下互换。由此，可以期待减少清洗不均、布料损伤。
此外，在波轮向叶片部变低的旋转方向旋转时，与波轮向其相反方向旋转时相比，波轮的转速、旋转量容易增加，扬水叶片的转速、旋转量容易增加。根据上述结构，由于扬水叶片具有当波轮向叶片部变低的旋转方向旋转时拨水的拨水面向与该旋转方向相反的方向凹陷的形状，因此，当波轮向该旋转方向旋转时， 扬水叶片容易拨动收容室内的水，随着扬水叶片的转速、旋转量增加，扬水叶片的扬水作用大大增加。由此，能大幅度增加波轮旋转时循环水路与洗涤桶之间的循环水量。
本方案的洗衣机可以配置为使所述扬水叶片具有如下形状：从所述基部的中心侧向外周侧笔直延伸，中途向所述叶片部变低的旋转方向侧弯曲。
根据上述结构，扬水叶片的形状简单，因而容易形成。因此，波轮的制造变得容易。
本方案的洗衣机中，所述叶片部可以配置为以能在第一位置和与该第一位置相比所述突出高度变高的第二位置之间活动的方式保持于所述基部。这种情况下，所述可变机构部可以配置为包括：旋转部，配置于所述基部的背面侧，通过所述驱动部，相对于所述基部向相反的第一方向和第二方向被旋转驱动；以及移动部，设置于所述旋转部的与所述叶片部对应的位置，随着所述旋转部向所述第一方向的旋转而使所述叶片部从所述第一位置向所述第二位置移动，随着所述旋转部向所述第二方向的旋转而使所述叶片部从所述第二位置向所述第一位置移动。此外，所述基部可以配置为包括第一抵接部和第二抵接部，所述第一抵接部在所述叶片部移动至所述第二位置时与所述旋转部接触，所述第二抵接部在所述叶片部移动至所述第一位置时与所述旋转部接触。而且，当所述旋转部与所述第一抵接部和所述第二抵接部接触时，所述基部与所述旋转部一体旋转，所述波轮分别向所述第一方向和所述第二方向旋转。
根据上述结构，能通过驱动部同时进行叶片部的突出高度的切换和波轮的旋转，因此，能实现部件成本的降低等。
在采用上述结构的情况下，进一步地，所述扬水叶片可以设置于所述基部的背面的、所述旋转部的可动区域以外的区域。
如果采用这样的结构的话，多个扬水叶片不会干涉旋转部，不会妨碍旋转部的活动。
在采用上述结构的情况下，进一步地，可以在所述移动部设置倾斜面。这种情况下，在所述叶片部设置有升降部，所述升降部与所述倾斜面接触，在所述叶片部从所述第一位置向所述第二位置移动时沿所述倾斜面上升，在所述叶片部从 所述第二位置向所述第一位置移动时沿所述倾斜面下降。
如果采用这样的结构的话，随着旋转部向第一方向旋转，升降部沿移动部的倾斜面上升，使得叶片部的突出高度变高，随着旋转部向第二方向旋转，升降部沿移动部的倾斜面下降，使得叶片部的突出高度变低。
发明效果
根据本发明，能提供一种洗衣机，其能减少清洗不均、布料损伤，能实现清洗性能的提高。
通过以下所示的实施方式的说明，本发明的效果和意义将变得更清楚。但是，以下的实施方式终究只是实施本发明时的一个例示，本发明不受以下的实施方式所记载的内容的任何限制。
附图说明
图1是实施方式的全自动洗干一体机的侧剖图。
图2是实施方式的全自动洗干一体机的上部的后视立体图。
图3的(a)和(b)是实施方式的从上方观察的波轮的立体图。
图4是实施方式的从上方观察的波轮的分解立体图。
图5是实施方式的从下方观察的波轮的分解立体图。
图6是实施方式的基部的背侧的主视图。
图7的(a)是实施方式的从前方上方观察的可动叶片部的立体图，图7的(b)是实施方式的从后方上方观察的可动叶片部的立体图，图7的(c)是实施方式的从前方下方观察的可动叶片部的立体图，图7的(d)是实施方式的升降棒的立体图。
图8的(a)是表示实施方式的两个可动叶片部不从配置面突出的状态的波轮的一个可动叶片部的周边的剖视图，图8的(b)是表示本实施方式的两个可动叶片部从配置面突出的状态的波轮的一个可动叶片部的周边的剖视图。
图9是用于对变更例的波轮的结构进行说明的图。
图10的(a)和(b)是用于对变更例的波轮的结构进行说明的图。
附图标记说明
1：全自动洗干一体机(洗衣机)；24：洗涤脱水桶(洗涤桶)；24b：收容室；26：波轮；27：循环水路；27a：出口；30：驱动单元(驱动部)；100：基部；100a：配置面；114：扬水叶片；114a：右拨水面(拨水面)；116：第一阻挡肋(第一抵接部)；117：第二阻挡肋(第二抵接部)；200：可动叶片部(叶片部)；251：升降部；300：可变机构部；310：旋转部；317：移动凸轮(移动部)；318：倾斜面。
具体实施方式
以下，参照附图，对本发明的洗衣机的一实施方式的全自动洗干一体机1进行说明。
图1是本实施方式的全自动洗干一体机1的侧剖图。图2是本实施方式的全自动洗干一体机1的上部的后视立体图。
全自动洗干一体机1具备构成外观的箱体10。箱体10包括：方形筒状的机身部11，上下表面敞开；上面板12，覆盖机身部11的上表面；以及脚台13，支承机身部11。在上面板12形成有用于投入洗涤物的外侧投入口14。外侧投入口14被自由开闭的上盖15覆盖。
在箱体10内，外桶20通过具有防振装置的四根吊棒21被弹性地悬吊支承。外桶20包括：近似圆筒状的外桶主体22a，上表面敞开；以及外桶罩22b，通过覆盖外桶主体22a的上表面而构成外桶20的上表面。在外桶20的上表面即外桶罩22b，在与外侧投入口14对应的位置形成有用于投入洗涤物的内侧投入口22c。内侧投入口22c被外桶盖23可开闭地覆盖。
在外桶20内配置有上表面敞开的近似圆筒状的洗涤脱水桶24。在洗涤脱水桶24的内周面遍及整周地形成有许多脱水孔24a。在洗涤脱水桶24的上部设置有平衡环25。需要说明的是，洗涤脱水桶24相当于本发明的洗涤桶。
在洗涤脱水桶24的底部配置有波轮26。此外，在洗涤脱水桶24的底部，设 置有收容设置在波轮26的背侧的多个扬水叶片114的收容室24b。以沿着洗涤脱水桶24的内周面的方式向上下方向延伸的循环水路27与收容室24b相连。在循环水路27的上端部设置有水的出口27a。需要说明的是，有时在该出口27a装接有线屑过滤器。此外，有时在循环水路27设置有独立于该出口27a的其他出口，线屑过滤器装接于该其他出口。
在外桶20的外底部配置有产生驱动洗涤脱水桶24和波轮26的扭矩的驱动单元30。驱动单元30相当于本发明的驱动部。驱动单元30包括驱动马达31、传递机构部32、翼轴33以及脱水桶轴34。翼轴33与波轮26连接，脱水桶轴34与洗涤脱水桶24连接。传递机构部32具有离合器机构，通过该离合器机构的切换操作，在洗涤过程和漂洗过程中，将驱动马达31的扭矩仅传递给翼轴33而仅使波轮26旋转，并在脱水过程中将驱动马达31的扭矩传递给翼轴33和脱水桶轴34而使波轮26和洗涤脱水桶24一体地旋转。需要说明的是，传递机构部32具有减速机构，在洗涤过程和漂洗过程中，驱动马达31的旋转根据减速机构的减速比被减速，传递给翼轴33。
在外桶20的外底部形成有排水口部20a。在排水口部20a设置有排水阀40。排水阀40连接于排水软管41。当打开排水阀40时，蓄于洗涤脱水桶24和外桶20的水通过排水软管41被排出到机外。
在箱体10内的后部，在外桶20的上方配置有烘干装置50和供水装置60。烘干装置50和供水装置60装配于配置在机身部11的上表面后部的固定板16，被上面板12覆盖。
烘干装置50将收容在洗涤脱水桶24内的洗涤物烘干。烘干装置50包括加热器和配置有鼓风扇的循环风路50a，循环风路50a通过进风管道71和排风管道72而与外桶20的内部连接。进风管道71和排风管道72是柔性管道，包含橡胶等弹性材料，中间部分具有未图示的蛇纹部。通过加热器和鼓风扇的工作而生成的暖风从循环风路50a排出，并通过进风管道71导入外桶20内。进而，从外桶20排出的暖风通过排风管道72被导入循环风路50a内。这样，暖风在循环风路50a与外桶20之间循环。
烘干装置50进行基于暖风的循环的循环烘干动作和在此之后接着将循环的 暖风的一部分向外部排出的排风烘干动作。在上面板12设置有排风口51，排风口由许多排气孔构成，排出暖风。
供水装置60的露出至外部的供水口61与从水龙头延伸的未图示的外部供水软管连接。供水装置60包括供水阀和洗涤剂容器，通过打开供水阀，来自水龙头的自来水与收容于洗涤剂容器内的洗涤剂一起被供给至外桶20内。供水装置60可以包括洗澡水泵。
在全自动洗干一体机1中，进行各种运转模式的洗涤运转、洗涤烘干运转或烘干运转。洗涤运转是仅进行洗涤的运转，按顺序执行洗涤过程、中间脱水过程、漂洗过程以及最终脱水过程。洗涤烘干运转是连续进行洗涤到烘干的运转，在最终脱水过程之后接着执行烘干过程。烘干运转是仅进行烘干的运转，仅执行烘干过程。
在洗涤过程和漂洗过程中，在洗涤脱水桶24内蓄有水的状态下，波轮26向左方向和右方向旋转。洗涤脱水桶24内的洗涤物通过波轮26的旋转所产生的水流等的作用而被清洗或者漂洗。
在中间脱水过程和最终脱水过程中，洗涤脱水桶24和波轮26一体地高速旋转。洗涤物通过在洗涤脱水桶24中产生的离心力的作用而被脱水。
烘干过程中，首先进行内部空气循环烘干过程，接着进行外部空气导入烘干过程。内部空气循环烘干过程中，烘干装置50进行循环烘干动作，由此暖风在循环风路50a与外桶20之间循环。通过烘干风的循环，洗涤脱水桶24内的温度迅速上升。波轮26进行旋转，洗涤物一边被搅拌一边被循环的暖风烘干。当洗涤脱水桶24内的温度继续上升，水分从洗涤物蒸发而使得暖风中含有大量水分时，切换为外部空气导入烘干过程。外部空气导入烘干过程中，通过烘干装置50，进行排风烘干动作，向循环风路50a导入外部空气，并且从循环风路50a排出一部分循环的暖风。由于从洗涤物蒸发的水分有效地从外桶20内排出到箱体10外，外桶20内变得容易除湿，因此促进了洗涤物的烘干。
接着，对波轮26的结构进行详细说明。
图3的(a)和(b)是本实施方式的从上方观察的波轮26的立体图。图3的(a)表示从上方观察波轮26向左方向旋转时的形态，图3的(b)表示从上 方观察波轮26向右方向旋转时的形态。
波轮26具备：基部100、两个可动叶片部200以及可变机构部300。在基部100设置有两个固定叶片部130，在作为各固定叶片部130的顶面的配置面100a，以能改变从配置面100a突出的突出高度的方式分别配置有可动叶片部200。可变机构部300能根据波轮26的旋转方向改变各可动叶片部200的突出高度。需要说明的是，可动叶片部200相当于本发明的叶片部。
本实施方式中，如图3的(a)和(b)所示，根据波轮26的旋转方向，波轮26的形态切换为两个可动叶片部200从配置面100a突出的形态和两个可动叶片部200不从配置面100a突出的形态。当可动叶片部200从配置面100a突出时，突出高度为规定高度H1，例如30mm左右的高度，当可动叶片部200不从配置面100a突出时，突出高度大致为0。
图4为本实施方式的从上方观察的波轮26的分解立体图。图5为本实施方式的从下方观察的波轮26的分解立体图。图6是本实施方式的基部100的背侧的主视图。
基部100包含聚丙烯等树脂材料，包括：具有近似圆盘状的主体部110、装接有可变机构部300的装接部120以及两个固定叶片部130。装接部120和固定叶片部130与主体部110形成为一体。
在主体部110的表面，在平坦的外周面111的内侧形成有圆形的凹面112。在凹面112形成有贯通表里的许多放水孔113。在从洗涤脱水桶24即外桶20排水时，蓄于凹面112的水从放水孔113排出。
在主体部110的背面，在除了装接部120和两个固定叶片部130以外的部位，设置有从中央侧向外周侧辐射状延伸的多个扬水叶片114。如上所述，多个扬水叶片114收容于洗涤脱水桶24内的收容室24b。各个扬水叶片114具有在波轮26向右方向旋转时拨水的右拨水面114a和在波轮26向左方向旋转时拨水的左拨水面114b。右拨水面114a相当于本发明的拨水面。各个扬水叶片114具有从中心侧向外周侧笔直延伸并在中途向波轮26的右方向的旋转方向侧以形成圆弧的方式弯曲的形状。由此，各个扬水叶片114的右拨水面114a整体上呈向与其旋转方向相反的方向即左方向凹陷的形状。右方向为两个可动叶片部200变低即其 突出长度为0的旋转方向。
装接部120在主体部110的中央部处从凹面112向上方隆起。由此，在装接部120的背侧形成有向上方凹陷的近似圆形的装接凹部121。在装接部120的顶面的中央部形成有圆形的开口部122，在开口部122的周围形成有圆环状的槽部123。在装接凹部121，在槽部123的背侧的位置形成有环状的滑动肋124。此外，在装接凹部121的外侧，在主体部110的背面设置有与装接凹部121同心的形成为圆弧状的滑动壁部115。
两个固定叶片部130以隔着装接部120对置的方式设置于主体部110的凹面112。在基部100上，两个固定叶片部130的朝向设定为相反朝向，即在基部100的周向上为同一朝向。各个固定叶片部130具有近似梯形柱状，形成为背侧中空。各个固定叶片部130的基部100的周向侧的第一侧面130a和第二侧面130b以第一侧面130a比第二侧面130b坡度更大的方式倾斜。
各固定叶片部130的顶面形成为近似长方形的平坦面而构成配置面100a。配置面100a的高度位置与主体部110的外周面111的高度位置相同。在配置面100a形成有占据几乎整个配置面100a的近似长方形的开口部131。在开口部131的四个缘部，通过沿缘部以规定间隔排列的多个肋132a，设有包括沿缘部连续的多个凹凸的固定侧凹凸组132。
在各个固定叶片部130的背侧，在开口部131的第二侧面130b侧的缘部附近，设置有具有轴孔133a的一对轴承部133。对于中央侧的轴承部133，轴孔133a不贯通轴承部133，对于外周侧的轴承部133，轴孔133a贯通轴承部133。
在与各个固定叶片部130的第一侧面130a有点距离的位置处的主体部110的背面，设置有从中央侧向外周侧延伸的第一阻挡肋116。此外，在与各个固定叶片部130的第二侧面130b有点距离的位置处的主体部110的背面，设置有从中央侧向外周侧延伸的第二阻挡肋117。在基部100的背面，第一阻挡肋116与第二阻挡肋117之间的区域成为后述的旋转部310的可动区域。多个扬水叶片114设置于基部100的背面处的该可动区域之外的区域。需要说明的是，第一阻挡肋116相当于本发明的第一抵接部，第二阻挡肋117相当于本发明的第二抵接部。
图7的(a)为本实施方式的从前方上方观察的可动叶片部200的立体图， 图7的(b)为本实施方式的从后方上方观察的可动叶片部200的立体图，图7的(c)为本实施方式的从前方下方观察的可动叶片部200的立体图，图7的(d)为本实施方式的升降棒250的立体图。
两个可动叶片部200包含聚丙烯等树脂材料，形成为背侧中空的近似三棱柱状。各可动叶片部200包括近似三角形的两个侧面210和设置于两个侧面210之间的第一倾斜面220、第二倾斜面230，两个侧面210之间的另一个面敞开。第一倾斜面220设置为比第二倾斜面230坡度大。在可动叶片部200的两个侧面210的背侧，在不与第一倾斜面220接触的角部，设置有具有轴孔241的一对轴装配部240。轴孔241贯通轴装配部240和侧面210。
在两个侧面210，通过沿着从第一倾斜面220朝向轴孔241的方向按规定间隔形成有向与该方向交叉的方向延伸的多个肋211，从而设置有包括多个凹凸的可动侧凹凸组212。此外，在各侧面210的下缘部，以向侧面突出的方式设置有阻挡部213。进而，在各侧面210，以包围轴孔241的方式形成有与固定叶片部130的轴承部133对应形状的肋214。
第一倾斜面220形成为以轴孔241为曲率中心的曲面。在第一倾斜面220，通过沿着与倾斜方向正交的方向按规定间隔形成有向倾斜方向延伸的多个肋221，从而在第一倾斜面220设置有包括多个凹凸的可动侧凹凸组222。此外，在第一倾斜面220，在可动叶片部200的顶部的附近形成有贯通表里的多个孔部223。在向洗涤脱水桶24供水时，当水蓄至可动叶片部200的位置时，蓄于可动叶片部200的背侧的空气从孔部223排出。由此，能防止因残留在可动叶片部200的背侧的空气所产生的浮力而导致可动叶片部200在不希望突出的时候突出。
第二倾斜面230中，下端部分形成为以轴孔241为曲率中心的曲面，其他部分形成为平坦面。在第二倾斜面230的下端部分，通过沿着与倾斜方向正交的方向按规定间隔形成有向倾斜方向延伸的多个肋231，从而设置有包括多个凹凸的可动侧凹凸组232。
在可动叶片部200的背侧，在可动叶片部200的顶部的大致正下方位置，以与第一倾斜面220平行的方式装配有升降棒250。升降棒250通过弯曲加工金属制、例如不锈钢制的圆棒而形成，包括直线状延伸的升降部251和设置于升降部 251的两侧的L字状的插入部252。升降棒250的摩擦系数比可动叶片部200小。在可动叶片部200的背侧设置有供升降棒250装配的装配部260。装配部260包括供升降棒250的插入部252插入的两个插入孔部261和在这两个插入孔部261之间支承升降部251的支承部262。
返回图4和图5，在两个可动叶片部200装配到基部100时，可动叶片部200的一对轴装配部240的轴孔241与固定叶片部130的一对轴承部133的轴孔133a对齐，金属制的、例如不锈钢制的轴270从外周侧穿过这些轴孔241、133a。这时，通过使轴承部133的顶端部从下方嵌入可动叶片部200的各侧面210的肋214的内侧，能容易地使轴孔241、133a彼此对齐，容易地进行轴270的装配。在轴270穿过之后，向外周侧的轴承部133的轴孔133a装配固定螺钉280，由此完成轴270的防脱。可动叶片部200能相对于基部100以轴270为中心转动，能在不从配置面100a突出的非突出位置和从配置面100a突出的突出位置之间移动。需要说明的是，非突出位置相当于本发明的第一位置，突出位置相当于本发明的第二位置。
在可动叶片部200的转动范围，可动叶片部200的可动侧凹凸群212、222、232与固定叶片部130的固定侧凹凸群132啮合。由此，不容易在可动叶片部200与固定叶片部130的开口部131的间隙中夹入硬币等异物或卡入洗涤物。
可变机构部300具备：旋转部310、支架320、帽部330、下垫圈340以及上垫圈350。旋转部310、支架320以及帽部330包含聚丙烯等树脂材料。
旋转部310具有一体形成有中央的轮毂部311和从轮毂部311向相反方向延伸的两个臂部312的结构。轮毂部311为顶面封闭的近似圆筒体，其背侧圆形凹陷，构成凸台装接部313。在凸台装接部313，装接有金属制的装配凸台360。在装配凸台360装配有翼轴33。装配凸台360的上端贯通轮毂部311的顶面，稍微向上方突出。在轮毂部311的顶面形成有具有大致与基部100的装接部120的开口部122的内径相等的外径的环状肋314。此外，在轮毂部311的顶面，在环状肋314的内侧形成有多个螺钉孔315。在轮毂部311的下部，在不形成臂部312的部分形成有圆弧状的滑动壁部316，在该滑动壁部316的表面装配有金属制的、例如不锈钢制的滑动板370。滑动板370的摩擦系数比旋转部310小。
在两个臂部312，分别在与两个可动叶片部200对应的位置设置有移动凸轮317。在移动凸轮317形成有倾斜面318和从倾斜面318的顶部沿水平方向延伸的平坦的支承面319。两个臂部312的移动凸轮317各自的倾斜面318朝向相反方向。需要说明的是，移动凸轮317相当于本发明的移动部。
支架320形成为近似圆盘状。在支架320的中央部形成有圆形凹陷的凹部321。凹部321的背侧向下方突出。在凹部321的底面的中央部形成有供装配凸台360的顶端部插入的开口部322，在开口部322的周围形成有多个螺钉孔323。此外，在支架320的背面，在外周部形成有环状的滑动肋324。
帽部330形成为近似圆盘状，具有大致与支架320的凹部321的内径相等的外径。下垫圈340和上垫圈350为金属制的环状板。下垫圈340的摩擦系数比旋转部310小，上垫圈350的摩擦系数比支架320小。
在将可变机构部300装配于基部100时，首先，旋转部310从下方装接于基部100的背面侧。轮毂部311插入装接凹部121，在轮毂部311的顶面与装接凹部121的上表面之间夹有下垫圈340。装接凹部121的上表面的滑动肋124与下垫圈340抵接。此外，轮毂部311的顶面的环状肋314嵌入装接部120的开口部122。轮毂部311的位于环状肋314的内侧的顶面穿过开口部122朝向上方。接着，将支架320从上方装配于轮毂部311的位于环状肋314的内侧的顶面。此时，支架320的凹部321的背面与轮毂部311的顶面接触，螺钉孔323、315彼此对齐。将未图示的螺钉固定于两个螺钉孔323、315，将支架320固定于轮毂部311。在支架320与装接部120的顶面的槽部123之间夹有上垫圈350。支架320的背面的滑动肋324与上垫圈350抵接。最后，将帽部330装配于支架320的凹部321，凹部321被帽部330覆盖。
旋转部310能相对于基部100在不接触设置于基部100的背面的两个第1阻挡肋116和两个第二阻挡肋117的范围内，即在可动区域中，以基部100的中心轴为中心进行旋转。在旋转部310相对于基部100进行旋转时，在基部100的背侧，轮毂部311的滑动壁部316的滑动板370在基部100的滑动壁部115的内表面上滑动，并且装接凹部121的上表面的滑动肋124在下垫圈340的表面上滑动。此外，在基部100的表面侧，支架320的背面的滑动肋324在上垫圈350的表面上滑动。由此，旋转部310相对于基部100顺利地旋转。
接着，对于通过可变机构部30改变可动叶片部200相对于固定叶片部130的顶面即配置面100a的突出高度的动作进行说明。
图8的(a)是表示本实施方式的两个可动叶片部200不从配置面100a突出的状态的波轮26的、一个可动叶片部200的周边的剖视图，图8的(b)是表示本实施方式的两个可动叶片部200从配置面100a突出的状态的波轮26的、一个可动叶片部200的周边的剖视图。
如图8的(a)所示，当可动叶片部200位于不从配置面100a突出的非突出位置时，可动叶片部200中，升降棒250的升降部251在移动凸轮317的倾斜面318的下方的位置与移动凸轮317接触。波轮26中，翼轴33与可变机构部300的旋转部310连接而不与基部100连接。因此，当驱动马达31从该状态进行正转时，驱动马达31的扭矩经由翼轴33传递给旋转部310，从上方观察，旋转部310向左方向旋转。旋转部310相对于基部100向左方向旋转，如实线箭头所示，旋转部310的臂部312向朝向第一阻挡肋116的方向移动。虽然可动叶片部200通过臂部312的移动而被推向移动凸轮317，但基部100因被施加洗涤脱水桶24内的水的阻力等而不容易旋转，因此如虚线箭头所示，升降部251沿倾斜面318上升，随之，可动叶片部200以轴270为中心向上方转动，如单点划线所示，可动叶片部200从配置面100a突出。这里，升降部251包括摩擦系数比可动叶片部200小的构件。因此，升降部251容易沿倾斜面318顺利地升降，可动叶片部200容易顺利地转动。
如图8的(b)所示，当臂部312与第一阻挡肋116抵接时，升降部251到达移动凸轮317的支承面319。由此，可动叶片部200到达突出位置，呈相对于配置面100a最为突出的状态。当成为该状态时，可动叶片部200的阻挡部213与配置面100a的背侧接触，可动叶片部200不会进一步向上方转动。此外，升降部251由支承面319向上方即突出方向支承。由此，即使被向下推，也能防止可动叶片部200退至配置面100a侧。在臂部312与第一阻挡肋116抵接之后，基部100与旋转部310成为一体而向左方向旋转。即，如图3的(a)所示，波轮26向左方向旋转。需要说明的是，另一个可动叶片部200也呈从配置面100a突出的状态。左方向相当于本发明的第一方向。
接着，如图8的(b)所示，在可动叶片部200处于突出位置的状态下，当 驱动马达31反转时，从上方观察，旋转部310向右方向旋转。旋转部310相对于基部100向右方向旋转，如实线箭头所示，臂部312向朝向第2阻挡肋117的方向移动。如虚线箭头所示，升降部251沿倾斜面318下降，随之，可动叶片部200向下方转动，如单点划线所示，可动叶片部200退向配置面100a侧。如图8的(a)所示，当升降部251完全滑下倾斜面318时，呈可动叶片部200不从配置面100a突出的状态。此时，可动叶片部200的第二倾斜面230与配置面100a大致同面。
臂部312与第二阻挡肋117抵接，基部100与旋转部310成为一体而向右方向旋转。即，如图3的(b)所示，波轮26向右方向旋转。需要说明的是，另一个可动叶片部200也呈不从配置面100a突出的状态。右方向相当于本发明的第二方向。
那么，当波轮26向左方向和右方向交替旋转时，交替重复图3的(a)那样的两个可动叶片部200都从配置面100a突出的形态、和图3的(b)那样的两个可动叶片部200都不从配置面100a突出的形态。
在两个可动叶片部200从配置面100a突出的情况下，洗涤脱水桶24内的水被两个固定叶片部130和可动叶片部200搅拌。另一方面，在两个可动叶片部200不从配置面100a突出的情况下，洗涤脱水桶24内的水只被两个固定叶片部130搅拌。因此，与两个可动叶片部200从配置面100a突出的情况相比，两个可动叶片部200不从配置面100a突出的情况下，洗涤脱水桶24内产生的水流极其微弱。因此，当使波轮26向左方向和右方向旋转时，在洗涤脱水桶24内，水流强度会产生极大的差异。由此，洗涤物不随着波轮26向左右方向旋转而向左右方向规律或者单调地活动，容易不规律或者复杂地活动，因此，洗涤物的上下互换变得容易进行。由此，可以期待减少清洗不均、布料损伤。
当波轮26向左右方向旋转时，扬水叶片114向左右方向旋转。当扬水叶片114进行旋转时，收容室24b内的水通过扬水作用被输送到循环水路27。被输送到循环水路27的水从出口27a朝向洗涤脱水桶24的内侧放出。由此，循环水被淋到位于洗涤脱水桶24内的上侧的洗涤物上。需要说明的是，在循环水路27具备线屑过滤器的情况下，循环水中所含的线屑被线屑过滤器捕集。
在波轮26向右方向旋转的情况下，因为两个可动叶片部200不从配置面100a突出，所以与向左方向旋转的情况相比，由于与水、洗涤物接触而施加给波轮26的负荷变小。由此，在将驱动马达31在左右方向上同样地通断控制时，与左方向相比，在右方向上，整体而言波轮26的转速容易增高，而且旋转量容易增多。因此，与左方向相比，在右方向上，扬水叶片114的转速容易增高，而且旋转量容易增多。
本实施方式中，扬水叶片114呈如下形状：当波轮26向右方向旋转时拨水的右拨水面114a向左方向凹陷。因此，当波轮26向右方向旋转时，扬水叶片114变得容易像桨一样捕水，变得容易拨水。因此，当波轮26向右方向旋转时，随着扬水叶片114的转速、旋转量增加，由扬水叶片114产生的扬水作用大幅度增加。因此，当波轮26向左右方向旋转时，能使整体的循环水量大幅度增加，能通过从循环水路27放出的循环水充分地浸湿洗涤脱水桶24内的洗涤物，而且能充分发挥用循环水拍打清洗洗涤物的效果。此外，在循环水路27具备线屑过滤器的情况下，捕集线屑的效果会提高。
需要说明的是，当扬水叶片114变得容易拨水时，水对扬水叶片114的阻力增大而对波轮26的负荷增加。但是，与通过使两个可动叶片部200不突出从而不从洗涤物、水受到负荷相比，该负荷足够小，所以不容易妨碍波轮26向右方向旋转时转速、旋转量的增加。
此外，本实施方式中，扬水叶片114形成为如下形状：从基部100的中心侧向外周侧笔直延伸，中途，两个可动叶片部200向不突出的旋转方向即右方向侧弯曲，该形状较简单。所以，变得容易形成扬水叶片114，因此，变得容易制造波轮26。
进而，本实施的实施中，当旋转部310向左方向旋转时，两个可动叶片部200通过各个移动凸轮317移动至突出位置，然后旋转部310与第一阻挡肋116接触从而旋转部310与基部100成为一体，波轮26向左方向旋转。另一方面，当旋转部310向右方向旋转时，两个可动叶片部200通过各个移动凸轮317移动至非突出位置，然后旋转部310与第二阻挡肋117接触从而旋转部310与基部100成为一体，波轮26向右方向旋转。这样，能通过驱动单元30同时进行可动叶片部200的高度切换和波轮26的旋转，因此，能实现部件成本的降低等。
进而，多个扬水叶片114设置于基部100的背面处的旋转部310的可动区域以外的区域，因而，不会干涉旋转部310，不会妨碍它的活动。
以上，对本发明的实施方式进行了说明，但本发明不受上述实施方式等的任何限制，此外，本发明的实施方式也可以进行上述以外的各种变更。
例如，如图9、图10的(a)和(b)所示，能改变形成于基部100的背面的多个扬水叶片114的形状。
图9的例中，各个扬水叶片114具有如下形状：从中心侧向外周侧笔直延伸，中途向波轮26的右方向的旋转方向侧折曲并笔直延伸。由此，与上述实施方式相同，各个扬水叶片114呈如下形状：当波轮26向两个可动叶片部200不从配置面100a突出的右方向旋转时，拨水的右拨水面114a整体上向与其旋转方向相反的方向即左方向凹陷。
图10的(a)的例中，各个扬水叶片114具有如下形状：包括从中心侧向外周侧笔直延伸的直线状部114c和与直线状部114c连续的圆弧状部114d。由此，与上述实施方式相同，各个扬水叶片114的右拨水面114a呈在外周侧的圆弧状部114d的部分处向左方向凹陷的形状。
图10的(b)的例中，各个扬水叶片114具有如下形状：包括从中心侧向外周侧笔直延伸的直线状部114c和与直线状部114c连续的V字状部114e。由此，与上述实施方式相同，各个扬水叶片114的右拨水面114a呈在外周侧的V字状部114e的部分处向左方向凹陷的形状。
此外，上述实施方式的波轮26中，在基部100的凹面112设置有固定叶片部130，该固定叶片部130的顶面作为配置可动叶片部200的配置面100a。但是，也可以采用如下结构：不使基部100的表面凹陷而采用平坦面，不设置固定叶片部130，将该平坦面的一部分区域作为配置可动叶片部200的配置面100a。
此外，虽然在上述实施方式的波轮26中，设置了两个可动叶片部200，但是也可以设置一个或者三个以上可动叶片部200。在设置有三个以上可动叶片部200的情况下，多个可动叶片部200包括第一可动叶片部和个数比第一可动叶片部少的第二可动叶片部。而且，通过可变机构部300，在波轮26向左方向旋转时，切换为第一可动叶片部突出而第二可动叶片部不突出的形态，在波轮26向右方向 旋转时，切换为第二可动叶片部突出而第一可动叶片部不突出的形态即突出长度长的可动叶片部200的数量较少的形态。由此，在向右方向旋转时，与向左方向旋转时相比，波轮26的转速容易增高，旋转量容易增多。
进而，上述实施方式的波轮26中，形成于其表面的多个叶片部全部由包括固定叶片部130和可动叶片部200的叶片部构成。但是，波轮26也可以采用如下结构：多个叶片部中的一部分由包括固定叶片部130和可动叶片部200的叶片部、或者只包括可动叶片部200的叶片部构成。
进而，上述实施方式的波轮26中，为了使可动叶片部200的升降部251在移动凸轮317的倾斜面318上顺利移动，使用了摩擦系数小的升降棒250。但是，也能采用如下结构：在可动叶片部200设置滚轮作为升降部，滚轮在倾斜面318上滚动。此外，也可以采用如下结构：不使用升降棒250那样的分体构件构成升降部，而使可动叶片部200的一部分作为升降部在倾斜面318上移动。
进而，上述实施方式中，示出了将本发明适用于搭载有衣物烘干功能的全自动洗干一体机1的例子。但是，本发明也适用于不搭载衣物烘干功能的全自动洗衣机。
除此之外，本发明的实施方式可以在技术方案所示的技术思想的范围内适当地进行各种变更。

Claims (6)

  1. 一种洗衣机，其特征在于，具备：
    洗涤桶，收容洗涤物；
    波轮，配置于所述洗涤桶的底部；以及
    驱动部，驱动所述波轮，
    所述波轮包括：
    基部；
    叶片部，配置于设置在所述基部的表面的配置面，从该配置面突出的突出高度可变；
    可变机构部，能根据所述波轮的旋转方向改变所述叶片部的所述突出高度；以及
    多个扬水叶片，设置于所述基部的背侧，从所述基部的中心侧向外周侧辐射状延伸，
    在所述洗涤桶的底部，形成有收容所述扬水叶片的收容室，
    所述收容室与循环水路相连，
    在所述循环水路形成有出口，所述出口用于通过由所述扬水叶片的旋转产生的扬水作用，使被输送到所述循环水路内的水回到所述洗涤桶内，
    所述扬水叶片具有如下形状：当所述波轮向所述叶片部变低的旋转方向旋转时，所述扬水叶片拨水的拨水面向与该旋转方向相反的方向凹陷。
  2. 根据权利要求1所述的洗衣机，其特征在于，
    具备多个所述叶片部，
    在所述波轮向所述叶片部变低的旋转方向旋转时，所述突出高度高的所述叶片部消失或变少。
  3. 根据权利要求1或2所述的洗衣机，其特征在于，
    所述扬水叶片具有如下形状：从所述基部的中心侧向外周侧笔直延伸，中途向所述叶片部变低的旋转方向侧弯曲。
  4. 根据权利要求1至3中任一项所述的洗衣机，其特征在于，
    所述叶片部以能在第一位置和与该第一位置相比所述突出高度变高的第二位置之间活动的方式保持于所述基部，
    所述可变机构部包括：
    旋转部，配置于所述基部的背面侧，通过所述驱动部，相对于所述基部向相反的第一方向和第二方向被旋转驱动；以及
    移动部，设置于所述旋转部的与所述叶片部对应的位置，随着所述旋转部向所述第一方向的旋转而使所述叶片部从所述第一位置向所述第二位置移动，随着所述旋转部向所述第二方向的旋转而使所述叶片部从所述第二位置向所述第一位置移动，
    所述基部包括第一抵接部和第二抵接部，所述第一抵接部在所述叶片部移动至所述第二位置时与所述旋转部接触，所述第二抵接部在所述叶片部移动至所述第一位置时与所述旋转部接触，
    当所述旋转部与所述第一抵接部和所述第二抵接部接触时，所述基部与所述旋转部一体旋转，所述波轮分别向所述第一方向和所述第二方向旋转。
  5. 根据权利要求4所述的洗衣机，其特征在于，
    所述扬水叶片在所述基部的背面处设置于所述旋转部的可动区域以外的区域。
  6. 根据权利要求4或5所述的洗衣机，其特征在于，
    在所述移动部设置有倾斜面，
    在所述叶片部设置有升降部，所述升降部与所述倾斜面接触，在所述叶片部从所述第一位置向所述第二位置移动时沿所述倾斜面上升，在所述叶片部从所述第二位置向所述第一位置移动时沿所述倾斜面下降。
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