WO2015188683A1 - 滚筒式洗衣机 - Google Patents

滚筒式洗衣机 Download PDF

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Publication number
WO2015188683A1
WO2015188683A1 PCT/CN2015/079426 CN2015079426W WO2015188683A1 WO 2015188683 A1 WO2015188683 A1 WO 2015188683A1 CN 2015079426 W CN2015079426 W CN 2015079426W WO 2015188683 A1 WO2015188683 A1 WO 2015188683A1
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WO
WIPO (PCT)
Prior art keywords
axis
clutch
drive
drum
driving
Prior art date
Application number
PCT/CN2015/079426
Other languages
English (en)
French (fr)
Inventor
辻贵裕
田中启之
Original Assignee
海尔亚洲株式会社
青岛海尔洗衣机有限公司
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 海尔亚洲株式会社, 青岛海尔洗衣机有限公司 filed Critical 海尔亚洲株式会社
Priority to CN201580031126.8A priority Critical patent/CN106460281A/zh
Priority to KR1020177001046A priority patent/KR101913520B1/ko
Priority to EP15806510.2A priority patent/EP3156535B1/en
Priority to US15/316,619 priority patent/US20170152626A1/en
Publication of WO2015188683A1 publication Critical patent/WO2015188683A1/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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08—Control circuits or arrangements thereof
    • 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 
    • D06F23/02—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 horizontal axis
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/36—Driving arrangements  for rotating the receptacle at more than one speed
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/40—Driving arrangements  for driving the receptacle and an agitator or impeller, e.g. alternatively
    • 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
    • D06F17/08—Driving arrangements for the impeller
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • 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 
    • D06F23/06—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 an inclined axis

Definitions

  • the present invention relates to a drum type washing machine.
  • the drum type washing machine can be continuously performed from washing to drying, or can be washed without drying.
  • a drum type washing machine rotates a horizontal axis type drum in an outer tank in which water is stored in the bottom, and lifts and drops the laundry by a baffle provided in the drum, by dropping the laundry to the laundry.
  • the laundry is washed by the inner peripheral surface of the drum (refer to Patent Document 1).
  • the drum type washing machine is less likely to have a smaller mechanical force acting on the laundry than the fully automatic washing machine that rotates the pulsator in the washing and dewatering tank to wash the laundry, and the detergency performance is liable to be lowered.
  • Patent Document 1 Japanese Laid-Open Patent Publication No. 2013-240577
  • a clutch mechanism portion is provided at a driving portion that rotates the drum and the agitating body, and the driving mode of the driving portion is a one-axis driving mode in which the drum and the agitating body are integrally rotated at the same rotational speed, and the drum and the drum are The agitating body is switched between two-axis driving modes in which the rotating bodies rotate at mutually different rotational speeds.
  • the present invention has been made in view of the above problems, and an object of the invention is to provide a drum type washing machine capable of accurately switching a driving form of a driving unit realized by a clutch mechanism unit.
  • a drum type washing machine includes: an outer tank disposed in a casing; and a drum disposed in the outer tank and rotatable about a horizontal axis or an inclined axis inclined with respect to a horizontal direction; a rear portion of the drum, and having a protrusion on the surface in contact with the laundry; a driving portion that rotates the drum and the rotating body; and a control portion that controls the operation of the driving portion.
  • the driving portion includes: a driving motor; a first rotating shaft that transmits rotation of the driving motor to the rotating body; and a second rotating shaft that transmits rotation of the driving motor to the drum;
  • the clutch mechanism unit switches the driving form of the driving unit between a one-axis driving mode and a two-axis driving mode, wherein the one-axis driving mode is such that the first rotating shaft and the second rotating shaft are identical
  • the two-axis drive mode is a mode in which the first rotation shaft and the second rotation shaft are respectively rotated at different rotation speeds.
  • the clutch mechanism portion includes a clutch body having a first engaging portion that is moved to a first position by the clutch body, and the first engaging portion is accompanied by the driving at the first position
  • the first engaged portion that is rotated by the rotation of the motor is engaged, and the driving form is switched to the one-axis driving form.
  • the control unit performs an axis switching process of operating the clutch mechanism portion to move the clutch body After the first position, the driving motor is rotated to engage the unengaged first engaging portion with the first engaged portion.
  • control unit may employ the one-axis switching process after the one-axis switching process is performed by rotating the drive motor in the one-axis drive mode.
  • the drive motor can be slowly rotated, the first engagement portion and the first engaged portion can be easily engaged, and the switching accuracy can be improved.
  • the drive unit may further include a planetary gear mechanism having a sun gear that rotates in accordance with rotation of the motor; An internal gear surrounding the sun gear; a plurality of planet gears interposed between the sun gear and the internal gear; and a planet carrier holding the planet gears in a rotationally free manner, wherein the planet carrier and One of the internal gears is fixed to the second rotating shaft.
  • a configuration may be adopted in which the clutch body has a second engaging portion, and the other of the carrier and the internal gear is circumferentially opposed to the other side The rotation of the direction is restricted and the movement in the axial direction of the second rotation shaft is coupled by the allowed state.
  • the driving portion moves to the second position by the clutch body, and the second engaging portion is engaged with the second engaged portion that does not rotate with the rotation of the driving motor at the second position. a state in which the part is engaged and the other side is not rotated, so that the driving form is switched to the two-axis driving mode, even if the clutch mechanism portion is operated to move the clutch body to the second position,
  • the second engaging portion is not engaged with the second engaged portion, the other portion is rotated in accordance with the rotation of the drive motor to rotate the clutch body.
  • control unit In order to switch from the two-axis drive mode to the one-axis drive mode, the control unit performs a two-axis switching process of operating the clutch mechanism portion to move the clutch body After the second position, the driving motor is rotated to engage the unengaged second engaging portion with the second engaged portion.
  • the clutch mechanism portion when the clutch mechanism portion is operated to move the clutch body to the second position, even if the second engaging portion and the second engaged portion are displaced, the misalignment can be eliminated, and the second engaging portion can be The second engaged portion is engaged. Thereby, switching from the one-axis drive mode to the two-axis drive mode can be performed with high precision.
  • control unit may adopt a switching operation for the two-axis, after the two-axis switching process, by rotating the driving motor than in the two-axis driving mode
  • the driving current with a small driving current is a structure that causes the driving motor to rotate.
  • a clutch driving device for moving the clutch body may be provided.
  • the clutch driving device includes: a working body that can migrate to a first operating state that moves the clutch body to the first position and move the clutch body to the a second working state of the second position; and a state detecting unit that detects an operating state of the working body.
  • the control unit operates the clutch driving device to move the working body to the first operating state according to a detection result of the state detecting portion for the one-axis switching process, and the two-axis switching process And operating the clutch driving device to move the working body to the second operating state according to a detection result of the state detecting unit.
  • FIG. 1 is a side cross-sectional view showing a configuration of a drum type washing machine according to an embodiment.
  • FIG. 2 is a cross-sectional view showing a configuration of a drive unit according to an embodiment.
  • FIG 3 is a cross-sectional view showing a configuration of a drive unit according to an embodiment.
  • FIG. 4 is a front view of the rotor showing a configuration of a rotor of a drive motor according to the embodiment.
  • Fig. 5 is an enlarged perspective view showing a rear portion of a bearing unit formed by a rack according to an embodiment.
  • FIG. 6 is a view showing a configuration of a clutch body of a clutch mechanism portion according to the embodiment.
  • FIG. 7 is a block diagram showing a configuration of a drum type washing machine according to an embodiment.
  • FIG. 8 is a view showing a state in which the engagement flange portion of the clutch body according to the embodiment and the engaged concave portion of the rotor are displaced.
  • FIG. 9 is a flowchart showing one-axis switching processing according to the embodiment.
  • FIG. 10 is a flowchart showing a two-axis switching process according to the embodiment.
  • FIG. 11 is a view for explaining a configuration of a drive unit according to a modification.
  • drum type washing machine which does not have a drying function as one embodiment of the drum type washing machine of the present invention will be described with reference to the drawings.
  • FIG. 1 is a side cross-sectional view showing a configuration of a drum type washing machine 1.
  • the drum type washing machine 1 is provided with a casing 10 that constitutes an appearance.
  • the front surface 10a of the casing 10 is inclined upward from the central portion, and an inlet 11 for washing is formed on the inclined surface.
  • the inlet 11 is covered by a door 12 that is freely opened and closed.
  • the outer tank 20 is elastically supported by a plurality of dampers 21.
  • the drum 22 is rotatably disposed in the outer tub 20.
  • the outer groove 20 and the rear surface side of the drum 22 are inclined so as to become lower with respect to the horizontal direction. Thereby, the drum 22 rotates centering on the inclination axis inclined with respect to the horizontal direction.
  • the inclination angle of the outer tub 20 and the drum 22 is set to about 10 to 20 degrees.
  • the opening 20a of the front surface of the outer tub 20 and the opening 22a of the front surface of the drum 22 face the input port 11, and are closed by the door 12 together with the input port 11.
  • a plurality of dewatering holes 22b are formed on the inner peripheral surface of the drum 22, a plurality of dewatering holes 22b are formed.
  • three lifting ribs 23 are provided at substantially equal intervals in the circumferential direction.
  • the agitating body 24 is rotatably disposed at the rear of the drum 22 .
  • the agitating body 24 has a substantially disk shape.
  • the agitating body 24 rotates coaxially with the drum 22.
  • the agitating body 24 corresponds to the rotating body of the present invention, and the vane 24a corresponds to the protruding portion of the present invention.
  • a drive unit 30 that generates a torque that drives the drum 22 and the agitating body 24 is disposed behind the outer tub 20.
  • the drive unit 30 corresponds to the drive unit of the present invention.
  • the driving unit 30 rotates the drum 22 and the stirring body 24 at different rotation speeds in the same direction. Specifically, the drive unit 30 rotates the drum 22 at a rotational speed at which the centrifugal force applied to the laundry in the drum 22 is less than the gravity, and rotates the agitating body 24 at a rotational speed faster than the rotational speed of the drum 22.
  • the drive unit 30 integrally rotates the drum 22 and the agitating body 24 with a centrifugal force that is applied to the laundry in the drum 22 much larger than the rotational speed of gravity.
  • the detailed structure of the drive unit 30 will be described later.
  • a drain port portion 20b is formed at the bottom of the outer tub 20.
  • a drain valve 40 is provided in the drain port portion 20b.
  • the drain valve 40 is connected to the drain hose 41. When the drain valve 40 is opened, the water stored in the outer tank 20 is discharged to the outside through the drain hose 41.
  • a detergent box 50 is disposed in the front upper portion of the casing 10.
  • the detergent container 50a containing the detergent is accommodated in the detergent box 50 so as to be freely extracted from the front.
  • the detergent box 50 is configured by the water supply hose 52
  • the water supply valve 51 at the upper rear portion in the casing 10 is connected.
  • the detergent box 50 is connected to the upper portion of the outer tub 20 through a water injection pipe 53.
  • tap water from the faucet is supplied into the outer tank 20 through the water supply hose 52, the detergent box 50, and the water injection pipe 53.
  • the detergent contained in the detergent container 50a is supplied into the outer tub 20 along the water flow.
  • FIG. 2 and 3 are cross-sectional views showing the configuration of the drive unit 30.
  • 2 shows a state in which the driving form of the driving unit 30 is switched to the two-axis driving mode
  • FIG. 3 shows a state in which the driving form of the driving unit 30 is switched to the one-axis driving mode.
  • FIG. 4 is a front view showing the rotor 110 of the structure of the rotor 110 of the drive motor 100.
  • FIG. 5 is an enlarged perspective view of the rear portion of the bearing unit 500 in which the rack 514 is formed.
  • 6(a) to 6(c) are views showing a configuration of a clutch body 610 of the clutch mechanism portion 600, which are respectively a front view, a right side view, and a rear view of the clutch body 610.
  • the drive unit 30 includes a drive motor 100, a wing shaft 200, a drum shaft 300, a planetary gear mechanism 400, a bearing unit 500, and a clutch mechanism portion 600.
  • the drive motor 100 generates a torque for driving the agitating body 24 and the drum 22.
  • the wing shaft 200 is rotated by the torque of the drive motor 100, and the rotation is transmitted to the agitating body 24.
  • the wing shaft 200 corresponds to the first rotating shaft of the present invention.
  • the planetary gear mechanism 400 decelerates the rotation of the wing shaft 200, that is, the rotation of the rotor 110 of the drive motor 100, and transmits it to the drum shaft 300.
  • the drum shaft 300 rotates coaxially with the wing shaft 200 at a rotational speed decelerated by the planetary gear mechanism 400, and transmits the rotation to the drum 22.
  • the drum shaft 300 corresponds to the second rotating shaft of the present invention.
  • the bearing unit 500 supports the wing shaft 200 and the drum shaft 300 in a freely rotatable manner.
  • the clutch mechanism unit 600 switches the driving form of the driving unit 30 between the two-axis driving mode in which the agitating body 24, that is, the wing shaft 200, and the rotational speed of the driving motor 100 are switched.
  • the rotation speed is rotated at an equal speed
  • the drum shaft 230, that is, the drum shaft 300 is rotated at a rotation speed decelerated by the planetary gear mechanism 40.
  • the one-shaft drive mode is such that the agitating body 24 and the drum 22, that is, the wing shaft 200.
  • the drum shaft 300 and the planetary gear mechanism 400 are integrally rotated at a rotation speed equal to that of the drive motor 100.
  • the drive motor 100 is an outer rotor type DC brushless motor including a rotor 110 and a stator 120.
  • the rotor 110 is formed in a bottomed cylindrical shape, and permanent magnets 111 are arranged on the inner circumferential surface thereof over the entire circumference.
  • a circular boss portion 112 is formed at a central portion of the rotor 110.
  • a boss hole 113 for fixing the wing shaft 200 is formed in the boss portion 112, and an annular engaged recess 114 is formed on the outer circumference of the boss hole 113.
  • the outer peripheral portion of the engaged recessed portion 114 has the uneven portion 114a over the entire circumference. Engaged recess 114 corresponds to the first engaged portion of the present invention.
  • the stator 120 has a coil 121 at the outer peripheral portion.
  • a drive current is supplied to the coil 121 of the stator 120 from a motor drive unit to be described later, the rotor 110 rotates.
  • the drum shaft 300 has a hollow shape and encloses the wing shaft 200 and the planetary gear mechanism 400.
  • the center portion of the drum shaft 300 is bulged outward, and the bulged portion constitutes a housing portion of the planetary gear mechanism 400.
  • the planetary gear mechanism 400 includes a sun gear 410, an annular internal gear 420 surrounding the sun gear 410, a plurality of sets of planetary gears 430 interposed between the sun gear 410 and the internal gear 420, and a planet that rotatably holds the planetary gears 430 Carrier 440.
  • the sun gear 410 is fixed to the wing shaft 200, and the internal gear 420 is fixed to the drum shaft 300.
  • a set of planet gears 430 includes a first gear and a second gear that mesh with each other and rotate in opposite directions.
  • the planet carrier 440 includes a carrier shaft 441 that extends rearward.
  • the carrier shaft 441 is coaxial with the drum shaft 300, and is internally hollow to allow the wing shaft 200 to be inserted.
  • the rear end portion of the wing shaft 200 protrudes rearward from the carrier shaft 441 and is fixed to the boss hole 113 on the rotor 110.
  • a cylindrical bearing portion 510 is provided at the center portion. Inside the bearing portion 510, rollers 511 and 512 are provided at the front and rear portions, and a mechanical seal 513 is provided at the front end portion. The outer peripheral surface of the drum shaft 300 is supported by the rollers 511, 512 and smoothly rotates in the bearing portion 510. In addition, intrusion of water between the bearing portion 510 and the drum shaft 300 is prevented by the mechanical seal 513. As shown in FIG. 5, a rack 514 is formed on the inner surface of the rear end portion of the bearing portion 510 over the entire circumference. The rack 514 corresponds to the second engaged portion of the present invention.
  • a fixing flange portion 520 is formed around the bearing portion 510.
  • a mounting boss 521 is formed at a lower end portion of the fixing flange portion 520.
  • the bearing unit 500 is fixed to the rear surface of the outer tub 20 by a fixing method such as screw fastening.
  • a fixing method such as screw fastening.
  • the wing shaft 200 and the drum shaft 300 face the inside of the outer tub 20.
  • the drum 22 is fixed to the drum shaft 300, and the agitating body 24 is fixed to the wing shaft 200.
  • the clutch mechanism unit 600 includes a clutch body 610, a clutch spring 620, a clutch lever 630, a lever support portion 640, a clutch drive device 650, a joint bar 660, and a mounting plate 670.
  • the clutch body 610 has a substantially disk shape.
  • An annular rack 611 is formed on the outer peripheral surface of the front end portion of the clutch body 610.
  • the rack 611 is in contact with the teeth of the bearing unit 500
  • the strip 514 is formed in a manner of engagement.
  • a flange portion 612 is formed on the outer circumferential surface of the clutch body 610 behind the rack 611.
  • an annular engagement flange portion 613 is formed at the rear end portion.
  • the engagement flange portion 613 has the same shape as the engaged concave portion 114 of the rotor 110, and has an uneven portion 613a over the entire circumference of the outer peripheral portion.
  • the engagement flange portion 613 When the engagement flange portion 613 is inserted into the engaged recessed portion 114, the uneven portions 613a, 114a are engaged with each other.
  • the engagement flange portion 613 corresponds to the first engagement portion of the present invention
  • the rack 611 corresponds to the second engagement portion of the present invention.
  • the carrier shaft 441 is inserted into the shaft hole 614 of the clutch body 610.
  • the rack 614a formed on the inner peripheral surface of the shaft hole 614 is engaged with the rack 441a formed on the outer peripheral surface of the carrier shaft 441.
  • the clutch body 610 is in a state in which the movement in the front-rear direction is permitted with respect to the carrier shaft 441 and the rotation in the circumferential direction is restricted.
  • an annular receiving groove 615 is formed outside the shaft hole 614, and a clutch spring 620 is housed in the receiving groove 615.
  • One end of the clutch spring 620 is in contact with the rear end portion of the bearing portion 510, and the other end is in contact with the bottom surface of the receiving groove 615.
  • a pressing portion 631 that comes into contact with the rear surface of the flange portion 612 of the clutch body 610 and pushes the flange portion 612 forward is formed at the upper end portion of the clutch lever 630.
  • the clutch lever 630 is rotatably supported by a support shaft 641 provided on the lever support portion 640.
  • a mounting shaft 632 is formed at a lower end portion of the clutch lever 630.
  • the clutch driving device 650 is disposed below the clutch lever 630.
  • the clutch driving device 650 includes a torque motor 651 and a disk-shaped cam 652 that rotates about a horizontal axis by the torque of the torque motor 651.
  • a cam shaft 653 is provided on the outer peripheral portion. The center of rotation of the cam 652 and the center of the mounting shaft 632 of the clutch lever 630 are aligned in the front-rear direction.
  • the cam 652 corresponds to the working body of the present invention.
  • the engagement bar 660 extends in the up and down direction and connects the clutch lever 630 and the cam 652.
  • the upper end portion of the engagement bar 660 is attached to the mounting shaft 632 of the clutch lever 630, and the lower end portion is attached to the cam shaft 653 of the cam 652.
  • a spring 661 is integrally formed at an intermediate position of the engagement bar 660.
  • the spring 661 is a tension spring.
  • the rod support portion 640 and the clutch drive device 650 are fixed to the mounting plate 670 by a fixing method such as screw fastening.
  • the mounting plate 670 is fixed to the mounting boss 521 of the bearing unit 500 by screws.
  • the cam 652 When the driving form of the drive unit 30 is switched from the one-axis drive mode to the two-axis drive mode, as shown in FIG. 2, the cam 652 is rotated by the torque motor 651 so that the cam shaft 653 is positioned at the lowest position. As the cam 652 rotates, the lower end portion of the clutch lever 630 is pulled downward by the engagement bar 660. Clutch The lever 630 is rotated forward about the support shaft 641, and the pressing portion 631 pushes the clutch body 610 forward. The clutch body 610 moves forward against the elastic force of the clutch spring 620, and the rack 611 of the clutch body 610 and the rack 514 of the bearing unit 500 are engaged.
  • the position of the clutch body 610 in which the rack 611 and the rack 514 are engaged is referred to as a second position.
  • the operating state of the cam 653 located at the lowermost position of the cam shaft 653 is referred to as a second operational state.
  • the carrier shaft 441 of the planetary gear mechanism 400 that is, the planetary gear
  • the frame 440 is in a state of being fixed in a non-rotatable manner.
  • the wing shaft 200 rotates at a rotational speed equal to the rotational speed of the rotor 110, and the agitating body 24 coupled to the wing shaft 200 also rotates at the same speed as the rotational speed of the rotor 110. The speed is rotated.
  • the sun gear 410 rotates in the planetary gear mechanism 400.
  • the carrier 440 since the carrier 440 is in a fixed state, the first gear and the second gear of the planetary gear 430 rotate in the same direction and in the opposite direction to the sun gear 410, respectively, and the internal gear 420 rotates in the same direction as the sun gear 410.
  • the drum shaft 300 fixed to the inner gear 420 is in the same direction as the wing shaft 200, and is rotated at a rotation speed slower than the wing shaft 200, and the drum 22 fixed to the drum shaft 300 is more than the agitating body 24
  • the slow rotation speed is rotated in the same direction as the agitating body 24.
  • the agitating body 24 rotates in the same direction as the drum 22 at a rotational speed faster than the drum 22.
  • the cam 652 is rotated by the torque motor 651 so that the cam shaft 653 is located at the uppermost position.
  • the spring 661 is contracted.
  • the spring 661 returns to the natural length, then, as the cam shaft 653 moves, the engagement bar 660 moves upward, and the lower end portion of the clutch lever 630 is pushed by the engagement bar 660 to move upward.
  • the clamp lever 630 rotates rearward about the support shaft 641, and the pressing portion 631 is separated from the flange portion 612 of the clutch body 610.
  • the clutch body 610 is moved rearward by the elastic force of the clutch spring 620, and the engagement flange portion 613 of the clutch body 610 and the engaged concave portion 114 of the rotor 110 are engaged.
  • first position the position of the engagement flange portion 613 and the clutch body 610 engaged with the engagement recess portion 114 is referred to as a first position.
  • second operational state the operating state of the cam 653 located at the uppermost position of the cam shaft 653 is referred to as a first operational state.
  • the internal gear 420 rotates at a rotation speed equal to that of the sun gear 410 and the carrier 440, and the drum shaft 300 fixed to the internal gear 420 rotates at a rotation speed equal to that of the rotor 110. That is, in the drive unit 30, the wing shaft 200, the planetary gear mechanism 400, and the drum shaft 300 are integrally rotated. Thereby, the drum 22 and the agitating body 24 rotate integrally.
  • FIG. 7 is a block diagram showing the configuration of the drum type washing machine 1.
  • the drum type washing machine 1 further includes a control unit 701, a storage unit 702, an operation unit 703, a water level sensor 704, a motor drive unit 705, a water supply drive unit 706, a drain drive unit 707, a clutch drive unit 708, and Door lock device 709.
  • the operation unit 703 includes a power button 703a, a start button 703b, and a program selection button 703c.
  • the power button 703a is a button for turning on and off the power of the drum type washing machine 1.
  • the start button 703b is a button for starting the operation.
  • the mode selection button 703c is a button for selecting an arbitrary operation program from among a plurality of operation programs related to the washing operation.
  • the operation unit 703 outputs an input signal corresponding to the button operated by the user to the control unit 701.
  • the water level sensor 704 detects the water level in the outer tank 20, and outputs a water level detection signal corresponding to the detected water level to the control unit 701.
  • the motor drive unit 705 supplies a drive current to the drive motor 100 based on a control signal from the control unit 701.
  • the motor drive unit 705 has a speed sensor that detects the rotational speed of the drive motor 100, an inverter circuit, and the like, and adjusts the drive current to rotate the drive motor 100 at the rotational speed set by the control unit 701.
  • the water supply driving unit 706 supplies a drive current to the water valve 51 based on a control signal from the control unit 701.
  • the drain drive unit 707 supplies a drive current to the drain valve 40 based on a control signal from the control unit 701.
  • the clutch drive 650 includes a first detection sensor 654 and a second detection sensor 655.
  • the first detecting sensor 654 and the second detecting sensor 655 constitute a state detecting portion of the present invention.
  • the first detecting sensor 654 detects that the cam 652 is in the first operating state, and outputs a detection signal to the control unit 701.
  • the second detecting sensor 655 detects that the cam 652 is in the second operational state, and outputs a detection signal to the control unit 701.
  • the clutch drive unit 708 supplies a drive current to the torque motor 651 based on the detection signals from the first detection sensor 654 and the second detection sensor 655 and based on a control signal output from the control unit 701.
  • the door lock device 709 performs locking and unlocking of the door 12 in accordance with a control signal from the control unit 701.
  • the storage unit 702 includes an EEPROM, a RAM, and the like.
  • a program for executing a washing operation of various washing operation programs is stored in the storage unit 702. Further, various parameters and various control flags for execution of these programs are stored in the storage unit 702.
  • the control unit 701 controls the motor drive unit 705, the water supply drive unit 706, the drain drive unit 707, the clutch drive unit 708, and the door lock device based on the respective programs from the operation unit 703, the water level sensor 704, and the like based on the program stored in the storage unit 702. 709 and so on.
  • the drum type washing machine 1 performs a washing operation of various operation programs in accordance with a user's selection operation by the program selection button 703c.
  • the washing step, the intermediate dehydration step, the rinsing step, and the final dehydration step are sequentially performed. Further, depending on the operation procedure, the intermediate dehydration process and the rinsing process are sometimes performed twice or more.
  • the driving form of the drive unit 30 is switched to the two-axis drive mode.
  • the water is stored in the outer tank 20 to a predetermined water level below the lower edge of the inlet port 11 so that the laundry in the drum 22 is immersed in the water.
  • the drive motor 100 alternately performs forward rotation and reverse rotation.
  • the drum 22 and the agitating body 24 alternately rotate forward and reverse in a state where the rotational speed of the agitating body 24 is faster than the rotational speed of the drum 22.
  • the drum 22 is rotated by a centrifugal force that acts on the laundry to be smaller than the gravity.
  • the laundry in the drum 22 is lifted up by the lifting ribs 23 and falls, and falls to the inner circumferential surface of the drum 22.
  • the laundry contacts the blade 24a of the rotating agitating body 24, and the laundry is rubbed by the blade 24a, and the laundry is stirred by the blade 24a. Thereby, the laundry is washed or rinsed.
  • the driving form of the drive unit 30 is switched to the one-axis drive mode.
  • the drive motor 100 that is, the drum 22 and the agitating body 24, rotate with the centrifugal force acting on the laundry in the drum 22 being much larger than the rotational speed of gravity.
  • the laundry is pressed onto the inner peripheral surface of the drum 22 by the action of centrifugal force for dehydration.
  • the clutch body 610 does not advance to the first position, and the engagement flange portion 613 does not engage with the engaged recess portion 114.
  • the rotation of the drive motor 100 rises relatively quickly, so that the drive motor 100 cannot be engaged with the recessed portion in the engagement flange portion 613.
  • the 114 is still raised to the hidden speed of the rotation speed for dehydration. In this case, since the rotation of the drive motor 100 is not accurately transmitted to the drum shaft 300, the drum 22 may be rotated incorrectly, and the possibility of proper dehydration of the laundry cannot be performed.
  • the clutch body 610 when the switching from the one-axis driving mode to the two-axis driving mode is performed, when the clutch body 610 is pushed by the clutch lever 630 to move to the second position, the respective teeth of the rack 611 and the respective teeth of the rack 514 are sometimes It will be displaced in the circumferential direction of the clutch body 610. In this case, the clutch body 610 does not travel to the second position, and the racks 611, 514 do not engage with each other. Therefore, when the drive motor 100 is officially rotated in a state where the racks 611 and 514 are not engaged with each other during washing and rinsing, the drum 22 may be rotated incorrectly, and the washing and rinsing of the laundry may be incorrectly performed. .
  • control unit 701 performs one-axis switching processing for accurately switching from the two-axis driving mode to the one-axis driving mode, and performs precision from the one-axis driving mode to Two-axis switching processing for switching between two-axis driving modes.
  • the one-axis switching process and the two-axis switching process will be described in detail.
  • Fig. 9 is a flowchart showing one-axis switching processing.
  • the drive mode of the drive unit 30 is a two-axis drive mode, and the cam 652 of the clutch drive device 650 is in the second operational state.
  • the control unit 701 rotates the torque motor 651 (S101).
  • the control unit 701 determines whether or not the detection signal is output by the first detection sensor 654 (S102).
  • the control unit 701 stops the torque motor 651 (S103).
  • the clutch body 610 reaches the first position when the uneven portions 613a and 114a are not displaced from each other, and the engaging flange portion 613 and the engaged concave portion 114 are engaged with each other.
  • the clutch body 610 is displaced from each other in the uneven portions 613a and 114a, and the engaging flange portion 613 does not reach the first position when it is not engaged with the engaged recessed portion 114.
  • the control unit 701 sets the rotational speed of the drive motor 100 to a predetermined pre-rotation speed, and supplies a drive current corresponding to the pre-rotation speed to the drive motor 100 to pre-drive the drive motor 100.
  • the pre-rotation speed is set to a rotation speed that is slower than the rotation speed when the drive motor 100 is officially rotated in the one-axis drive mode, for example, a rotation speed of about 20 rpm to 30 rpm. Thereby, the drive current supplied to the drive motor 100 at the time of pre-rotation is smaller than the drive current of the drive motor 100 at the time of the normal rotation.
  • the rotor 110 of the drive motor 100 is slowly rotated.
  • the uneven portions 613a and 114a are displaced from each other, when the engaged concave portion 114 is rotated by the rotation of the rotor 110 to a position where the uneven portions 613a and 114a coincide with each other, the engaging flange portion 613 and the engaged portion are engaged.
  • the recess 114 is engaged.
  • the clutch body 610 reaches the first position.
  • the pre-rotation time is set to a time during which the rotor 110 of the drive motor 100 is rotated from half rotation to multiple rotations, for example, by rotation at a pre-rotation speed. Since the rotor 110 of the drive motor 100 rotates more than the angle R corresponding to one pitch of the uneven portion 114a of the engaged recess 114 shown in FIG. 8, even the uneven portion 613a of the engaging flange portion 613 and the card are stuck. The unevenness of the concave portion 114a of the recessed portion 114 is shifted by approximately one pitch, and the engagement flange portion 613 and the engaged concave portion 114 can be engaged with each other.
  • the control unit 701 causes the drive motor 100 to be officially rotated.
  • the control unit 701 supplies a drive current corresponding to the rotational speed for dehydration to the drive motor 100 to rotate the drive motor 100.
  • Fig. 10 is a flowchart showing a two-axis switching process.
  • the drive mode of the drive unit 30 is a one-axis drive mode, and the cam 652 of the clutch drive device 650 is in the first operational state.
  • the control unit 701 rotates the torque motor 651 (S201).
  • the control unit 701 determines whether or not the detection signal is output by the second detection sensor 655 (S202).
  • the control unit 701 stops the torque motor 651 (S203).
  • the clutch body 610 reaches the second position in the case where the racks 611, 514 are engaged with each other.
  • the clutch body 610 does not reach the second position when the racks 611 and 514 are misaligned with each other and the racks 611 and 514 are not engaged with each other.
  • the control unit 701 sets the rotational speed of the drive motor 100 to a predetermined pre-rotation speed, and supplies a drive current corresponding to the pre-rotation speed to the drive motor 100 to pre-drive the drive motor 100.
  • the pre-rotation speed is set to a rotation speed that is slower than the rotation speed when the drive motor 100 is officially rotated in the two-axis drive mode. Thereby, the drive current supplied to the drive motor 100 at the time of pre-rotation is smaller than the drive current of the drive motor 100 at the time of the normal rotation.
  • the pre-rotation speed set in accordance with the two-axis switching process may be the same as or different from the pre-rotation speed set in accordance with the one-axis switching process.
  • the rotor 110 of the drive motor 100 is slowly rotated.
  • the wing shaft 200 rotates in accordance with the rotation of the rotor 110, whereby when the sun gear 410 rotates, the planetary gear 430 rotates.
  • both the internal gear 420 and the carrier 440 are in a rotatable state, but since the internal gear 420 is coupled to the drum 22, the carrier 440 and the clutch The bodies 610 are connected, so that the planetary carrier 440, which is smaller in torque required for rotation, rotates in conjunction with the rotation of the planetary gears 430.
  • the clutch body 610 rotates in accordance with the rotation of the carrier 440, the racks 611 and 514 which are displaced from each other are engaged with each other.
  • the clutch body 610 reaches the first position.
  • the pre-rotation time is set to a time during which the rotor 110 of the drive motor 100 is rotated from half rotation to multiple rotations, for example, by rotation at a pre-rotation speed.
  • the pre-rotation time of the two-axis switching process may be the same as or different from the pre-rotation time of the one-axis switching process.
  • the control unit 701 causes the drive motor 100 to be officially rotated.
  • the control unit 701 supplies a drive current corresponding to the rotational speed for washing to the drive motor 100 to rotate the drive motor 100.
  • the control unit 701 supplies a drive current corresponding to the rotational speed for rinsing to the drive motor 100 to rotate the drive motor 100.
  • one-axis switching processing is executed.
  • the one-axis process rotates the drive motor 100 to engage the unengaged engagement flange portion 613 and the engaged recess 114. Accordingly, when the clutch mechanism portion 600 is operated to move the clutch body 610 to the first position, even if the engagement flange portion 613 and the engaged recess portion 114 are displaced, the misalignment can be eliminated and the engagement convex can be eliminated.
  • the edge portion 613 is engaged with the engaged recess portion 114. Therefore, since the switching from the two-axis driving mode to the one-axis driving mode can be performed with high precision, the rotation of the drum 22 and the agitating body 24 in the one-axis driving mode can be accurately performed, and accurate dehydration can be performed.
  • the drive motor 100 is driven by the drive current that is smaller than the drive current when the drive motor 100 rotates in accordance with the one-axis drive mode, because the one-axis switching process is designed. Rotation, thereby enabling the drive motor 100 to rotate slowly. Thereby, the engagement flange portion 613 and the engaged concave portion 114 are easily engaged, and the accuracy of the switching can be improved.
  • the two-axis switching process is executed, and the two-axis switching is performed.
  • the process rotates the drive motor 100 to engage the unengaged rack 611 and the rack 514. Accordingly, when the clutch mechanism portion 600 is operated to move the clutch body 610 to the second position, even if a misalignment occurs in the rack 611 and the rack 514, the misalignment can be eliminated, and the racks 611, 514 can be engaged with each other. .
  • the switching from the one-axis driving mode to the two-axis driving mode can be performed with high precision, the rotation of the drum 22 and the agitating body 24 in the two-axis driving mode can be accurately performed, and accurate washing or rinsing can be performed.
  • the drive motor 100 is driven by the drive current that is smaller than the drive current when the drive motor 100 is rotated in the two-axis drive mode after the two-axis switching process. Rotation, thereby enabling the drive motor 100 to rotate slowly. Thereby, the rack 611 and the rack 514 are easily engaged, and the accuracy of switching can be improved.
  • the position of the clutch body 610 is indirectly detected by detecting the operating state of the cam 652 by using the first detecting sensor 654 and the second detecting sensor 655, the position of the clutch body 610 is not directly detected.
  • the driving form of the drive unit 30 can be switched by a sensor or the like.
  • the engagement flange portion 613 is formed as the first engagement portion on the clutch body 610
  • the engaged recess portion 114 is formed as the first engaged portion on the rotor 110 of the drive motor 100.
  • the clutch body 610 and the rotor 110 can be fixed in the circumferential direction by being engaged with each other, and the configuration of the first engaging portion and the first engaged portion can be anyway.
  • the rack body 610 is formed with the rack 611 as the second engaging portion
  • the rack portion 514 of the bearing unit 500 is formed with the rack 514 as the second engaged portion.
  • the clutch body 610 and the bearing portion 510 are fixed in the circumferential direction as long as they can be engaged with each other, and the configuration of the second engaging portion and the second engaged portion can be anyway.
  • the drive motor 100 is stopped after the pre-rotation time for the one-axis switching process and the two-axis switching process.
  • the drum shaft 300 is fixed to the inner gear 420, and the carrier shaft 441, that is, the planetary carrier 440 is coupled to the clutch body 610. Therefore, in the two-axis drive mode, when the wing shaft 200 is rotated in a state where the carrier 440 is fixed by the clutch body 610, the planetary gear 430 rotates with the rotation of the sun gear 410, and the internal gear 420 Rotation is performed at a slower rotational speed than the sun gear 410.
  • a structure in which the drum shaft 300 is fixed to the carrier 440 may be employed. In this case, the distal end portion 425a is attached to the inner gear 420 from the shaft portion 425 that protrudes rearward from the drum shaft 300.
  • the clutch body 610 is coupled to the shaft portion 425. That is, the clutch body 610 is coupled to the internal gear 420 via the shaft portion 425. Further, the planetary gear 430 is changed to have only the first gear.
  • the planetary gear 430 rotates and revolves with the rotation of the sun gear 410, and the planetary carrier 440 is compared.
  • the sun gear 410 rotates at a slow rotational speed. Thereby, the drum shaft 300 fixed to the carrier 440 is rotated.
  • the drum 22 is rotated about the tilt axis that is inclined with respect to the horizontal direction.
  • the drum type washing machine 1 can also rotate with the drum 22 centered on the horizontal axis. Structure.
  • drum type washing machine 1 of the above embodiment does not have a drying function
  • the present invention can also be applied to a drum type washing and drying machine which is a drum type washing machine having a drying function.
  • 10 housing; 20: outer groove; 22: roller; 24: agitating body (rotating body); 24a: blade (projection); 30: drive unit (drive unit); 100: drive motor; 110: rotor; 114: engaged recess (first engaged portion); 200: wing shaft (first rotating shaft); 300: drum shaft (second rotating shaft); 400: planetary gear mechanism; 410: sun gear; Internal gear; 430: planetary gear; 440: planetary carrier; 500: bearing unit; 510: bearing portion; 514: rack (second engaged portion); 600: clutch mechanism portion; 610: clutch body; Rack (second engaging portion); 613: engaging flange portion (first engaging portion); 650: clutch driving device; 652: cam (working body); 654: first detecting sensor (state detecting portion) 655: second detection sensor (state detecting unit); 701: control unit.
  • drive unit drive unit
  • 100 drive motor
  • 110 rotor
  • 114 engaged recess
  • 200 wing shaft (first rotating shaft); 300: drum shaft (second rotating shaft); 400

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

一种滚筒式洗衣机，能精度良好地进行通过离合器机构部（600）进行的驱动部的驱动形态的切换。驱动单元（30）包括驱动电机（100）以及离合器机构部（600），其中离合器机构部（600）在一轴驱动形态和二轴驱动形态之间切换驱动单元（30）的驱动形态，所述一轴驱动形态是使向搅拌体（24）传递旋转的翼轴（200）和向滚筒（22）传递旋转的滚筒轴（300）以相同的旋转速度一体地旋转的形态，所述二轴驱动形态是使翼轴（200）和滚筒轴（300）以不同的旋转速度分别旋转的形态。通过离合器机构部（600）的离合器体（610）被移动至第一位置，并且在第一位置处卡合凸缘部（613）与伴随着驱动电机（100）的旋转而进行旋转的被卡合凹部（114）卡合，从而驱动形态被切换至一轴驱动形态。控制部（701）执行一轴切换处理，该一轴切换处理是在使离合器机构部（600）工作以使离合器体（610）移动至第一位置之后，使驱动电机（100）旋转以使未卡合的卡合凸缘部（613）与被卡合凹部（114）卡合的处理。

Description

滚筒式洗衣机 技术领域
本发明涉及一种滚筒式洗衣机。该滚筒式洗衣机既可以从洗涤到烘干连续地进行，也可以进行洗涤但不进行烘干。
背景技术
以往，滚筒式洗衣机在蓄水于底部的外槽内使横轴型的滚筒旋转，并通过设置在滚筒内的提升筋(baffle)将洗涤物举起且使其落下，通过将洗涤物摔到滚筒的内周面来洗涤洗涤物(参照专利文献1)。
这样，在通过提升筋搅拌洗涤物的结构中，洗涤物彼此之间很难互相缠绕或互相摩擦。因此，滚筒式洗衣机与在洗涤脱水槽内使搅拌器(pulsator)旋转来洗涤洗涤物的全自动洗衣机相比，作用于洗涤物的机械力易变小，去污性能易降低。
因此，在滚筒式洗衣机中，为了提高去污性能，可以采用在滚筒的后表面设置搅拌体，在洗涤、漂洗时使滚筒与搅拌体以不同的旋转速度旋转的结构。
现有技术文献
专利文献
专利文献1：日本特开2013-240577号公报
发明内容
发明要解决的问题
在上述结构的滚筒式洗衣机中，脱水时，需要使滚筒和搅拌体以相同的旋转速度一体地旋转。因此，在使滚筒以及搅拌体旋转的驱动部处，设置有离合器机构部，使该驱动部的驱动形态在使滚筒和搅拌体以相同的旋转速度一体地旋转的一轴驱动形态和使滚筒和搅拌体以相互不同的旋转速度各自旋转的二轴驱动形态之间切换。
在如此通过离合器机构部进行驱动形态的切换的情况下，如果不能精度良好地进行该切换，就会有滚筒、搅拌体不正确工作导致得不到预期的性能的情 况发生，导致可靠性降低。
本发明是鉴于该问题而完成的，其目的在于，提供一种滚筒式洗衣机，能精度良好地进行通过离合器机构部实现的驱动部的驱动形态的切换。
用于解决问题的方案
本发明的主要方式的滚筒式洗衣机，具备：外槽，配置在壳体内；滚筒，配置在所述外槽内，能以水平轴或相对于水平方向倾斜的倾斜轴为中心进行旋转；旋转体，配置在所述滚筒的后部，并且表面具有与洗涤物接触的突状部；驱动部，使所述滚筒以及所述旋转体旋转；以及控制部，控制所述驱动部的工作。此处，所述驱动部包括：驱动电机；第一旋转轴，将所述驱动电机的旋转传递给所述旋转体；第二旋转轴，将所述驱动电机的旋转传递给所述滚筒；以及离合器机构部，使所述驱动部的驱动形态在一轴驱动形态和二轴驱动形态之间切换，所述一轴驱动形态是使所述第一旋转轴和所述第二旋转轴以相同的旋转速度一体地旋转的形态，所述二轴驱动形态是使所述第一旋转轴和所述第二旋转轴以不同的旋转速度分别旋转的形态。此外，所述离合器机构部包括具有第一卡合部的离合器体，通过所述离合器体被移动至第一位置，并且在该第一位置处所述第一卡合部与伴随着所述驱动电机的旋转而进行旋转的第一被卡合部卡合，从而所述驱动形态被切换为所述一轴驱动形态。为了进行从所述二轴驱动形态到所述一轴驱动形态的切换，所述控制部执行一轴切换处理，该一轴切换处理是在使所述离合器机构部工作以使所述离合器体移动至所述第一位置之后，使所述驱动电机旋转以使未卡合的所述第一卡合部与所述第一被卡合部卡合的处理。
根据上述的结构，即使在使离合器机构部工作以使离合器体移动至第一位置时第一卡合部和第一被卡合部产生错位，也能消除该错位，使第一卡合部和第一被卡合部卡合。由此，能精度良好地进行从二轴驱动形态到一轴驱动形态的切换。
在本方式的滚筒式洗衣机中，所述控制部可以采用对于所述一轴切换处理，在该一轴切换处理之后，通过比在所述一轴驱动形态下使所述驱动电机进行旋转时的驱动电流小的驱动电流，使所述驱动电机旋转的结构。
根据上述的结构，对于一轴切换处理，由于能使驱动电机缓慢地旋转，因此第一卡合部和第一被卡合部变得容易卡合，能够提高切换精度。
在本方式的滚筒式洗衣机中，可以采用下述结构，即，所述驱动部还包括行星齿轮机构，该行星齿轮机构具有：太阳齿轮，伴随着所述电机的旋转而进行旋转；环状的内齿轮，包围该太阳齿轮；多个行星齿轮，介于所述太阳齿轮和所述内齿轮之间；以及行星齿轮架，以旋转自由的方式保持这些行星齿轮，其中，所述行星齿轮架以及所述内齿轮中的一方固定在所述第二旋转轴上。在这种情况下，可以采用下述结构，即，所述离合器体具有第二卡合部，并且与所述行星齿轮架以及所述内齿轮中的另一方，以相对于该另一方往圆周方向的转动被限制并且所述第二旋转轴的轴线方向上的移动被允许的状态相连结。通过这样的结构，驱动部通过成为所述离合器体移动至第二位置，在该第二位置处所述第二卡合部与不随着所述驱动电机的旋转而进行旋转的第二被卡合部卡合，并且所述另一方不旋转的状态，从而所述驱动形态被切换为所述二轴驱动形态，即使所述离合器机构部工作以使所述离合器体移动至所述第二位置，当所述第二卡合部不与所述第二被卡合部卡合时，所述另一方也会伴随着所述驱动电机的旋转而进行旋转从而所述离合器体旋转。为了进行从所述二轴驱动形态到所述一轴驱动形态的切换，所述控制部执行二轴切换处理，该二轴切换处理是在使所述离合器机构部工作以使所述离合器体移动至所述第二位置之后，使所述驱动电机旋转以使未卡合的所述第二卡合部与所述第二被卡合部卡合的处理。
根据上述的结构，在使离合器机构部工作以使离合器体移动至第二位置时即使第二卡合部和第二被卡合部产生错位，也能消除该错位，使第二卡合部和第二被卡合部卡合。由此，能精度良好地进行从一轴驱动形态到二轴驱动形态的切换。
在采用上述结构的情况下，进一步地，所述控制部可以采用对于所述二轴切换处理，在该二轴切换处理之后，通过比在所述二轴驱动形态下使所述驱动电机进行旋转时的驱动电流小的驱动电流，使所述驱动电机旋转的结构。
只要采用这样的结构，对于二轴切换处理，由于能使驱动电机缓慢地旋转，因此第二卡合部和第二被卡合部变得容易卡合，能够提高切换精度。
在采用上述结构的情况下，还可以具备用于使所述离合器体移动的离合器驱动装置。在这种情况下，所述离合器驱动装置包括：工作体，可以迁移至使所述离合器体移动至所述第一位置的第一工作状态和使所述离合器体移动至所 述第二位置的第二工作状态；以及状态检测部，检测所述工作体的工作状态。所述控制部对于所述一轴切换处理，根据所述状态检测部的检测结果使所述离合器驱动装置工作以使所述工作体迁移至所述第一工作状态，对于所述二轴切换处理，根据所述状态检测部的检测结果使所述离合器驱动装置工作以使所述工作体迁移至所述第二工作状态。
只要采用这样的结构，由于通过检测工作体的工作状态，从而间接检测离合器体的位置，因此不需要使用用于直接检测离合器体的位置的传感器等，就能够切换驱动部的驱动形态。
发明效果
根据本发明，能提供一种滚筒式洗衣机，能精度良好地进行通过离合器机构部实现的驱动部的驱动形态的切换。
本发明的效果以及意义通过如下所示的实施方式的说明可以进一步明确。但是，以下的实施方式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述技术方案的任何限制。
附图说明
图1是表示实施方式所涉及的滚筒式洗衣机的结构的侧面剖视图。
图2是表示实施方式所涉及的驱动单元的结构的剖视图。
图3是表示实施方式所涉及的驱动单元的结构的剖视图。
图4是表示实施方式所涉及的驱动电机的转子的结构的、转子的主视图。
图5是实施方式所涉及的齿条形成的轴承单元的后部的放大立体图。
图6是表示实施方式所涉及的离合器机构部的离合器体的结构的图。
图7是表示实施方式所涉及的滚筒式洗衣机的结构的框图。
图8是表示在实施方式所涉及的离合器体的卡合凸缘部和转子的被卡合凹部上产生错位的状态的图。
图9是表示实施方式所涉及的一轴切换处理的流程图。
图10是表示实施方式所涉及的二轴切换处理的流程图。
图11是用于对变更例所涉及的驱动单元的结构进行说明的图。
具体实施方式
以下，关于作为本发明的滚筒式洗衣机的一个实施方式的不具有烘干功能的滚筒式洗衣机，参照附图进行说明。
图1是表示滚筒式洗衣机1的结构的侧面剖视图。
滚筒式洗衣机1具备构成外观的壳体10。壳体10的前表面10a从中央部向上部倾斜，在倾斜的面上形成有洗涤物的投入口11。投入口11由自由开闭的门12遮盖。
在壳体10内，外槽20由多个减振器21弹性地支承。滚筒22自由旋转地配置于外槽20内。外槽20以及滚筒22以后表面侧相对于水平方向变低的方式倾斜。由此，滚筒22以相对于水平方向倾斜的倾斜轴为中心进行旋转。外槽20以及滚筒22的倾斜角度设定为10～20度左右。外槽20的前表面的开口部20a以及滚筒22的前表面的开口部22a与投入口11对置，并与投入口11一起由门12来关闭。在滚筒22的内周面上，形成有许多个脱水孔22b。进而，在滚筒22的内周面上，在圆周方向上以大致相等的间隔设有三个提升筋23。
搅拌体24自由旋转地配置于滚筒22的后部。搅拌体24大致具有圆盘形状。在搅拌体24的表面上，形成有从中央部放射状延伸的多个叶片24a。搅拌体24与滚筒22同轴旋转。搅拌体24相当于本发明的旋转体，叶片24a相当于本发明的突状部。
在外槽20的后方，配置有产生驱动滚筒22以及搅拌体24的力矩的驱动单元30。驱动单元30相当于本发明的驱动部。驱动单元30在洗涤工序以及漂洗工序时，使滚筒22以及搅拌体24在同一方向上以不同的旋转速度进行旋转。具体地说，驱动单元30使滚筒22以施加给滚筒22内的洗涤物的离心力小于重力的旋转速度进行旋转，并使搅拌体24以比滚筒22的旋转速度还要快的旋转速度进行旋转。另一方面，驱动单元30在脱水工序时使滚筒22以及搅拌体24以施加给滚筒22内的洗涤物的离心力远远大于重力的旋转速度一体地进行旋转。驱动单元30的详细结构随后进行说明。
在外槽20的底部形成有排水口部20b。在排水口部20b中设置有排水阀40。排水阀40与排水软管41连接。当排水阀40打开时，贮存于外槽20内的水就会通过排水软管41向机外排出。
在壳体10内的前方上部配置有洗涤剂盒50。收容洗涤剂的洗涤剂容器50a从前方自由抽出地收容于洗涤剂盒50中。洗涤剂盒50通过给水软管52与配置 在壳体10内的后方上部的给水阀51连接。此外，洗涤剂盒50通过注水管53与外槽20的上部连接。当给水阀51打开时，通过给水软管52、洗涤剂盒50以及注水管53将来自水龙头的自来水供给外槽20内。此时，顺着水流将收容在洗涤剂容器50a中的洗涤剂供给外槽20内。
接着，关于驱动单元30的结构进行详细说明。
图2以及图3是表示驱动单元30的结构的剖视图。图2表示驱动单元30的驱动形态被切换到二轴驱动形态的状态，图3表示驱动单元30的驱动形态被切换到一轴驱动形态的状态。图4是表示驱动电机100的转子110的结构的转子110的主视图。图5是形成有齿条514的轴承单元500的后部的放大立体图。图6(a)～(c)是表示离合器机构部600的离合器体610的结构的图，其分别为离合器体610的主视图、右视图以及后视图。
驱动单元30包括：驱动电机100、翼轴200、滚筒轴300、行星齿轮机构400、轴承单元500以及离合器机构部600。驱动电机100产生用于驱动搅拌体24以及滚筒22的力矩。翼轴200利用驱动电机100的力矩进行旋转，并将该旋转传递给搅拌体24。翼轴200相当于本发明的第一旋转轴。行星齿轮机构400将翼轴200的旋转即驱动电机100的转子110的旋转进行减速并传递给滚筒轴300。滚筒轴300以由行星齿轮机构400减速后的旋转速度与翼轴200同轴旋转，并将该旋转传递给滚筒22。滚筒轴300相当于本发明的第二旋转轴。轴承单元500自由旋转地支承翼轴200以及滚筒轴300。离合器机构部600在二轴驱动形态和一轴驱动形态之间切换驱动单元30的驱动形态，其中，所述二轴驱动形态是能使搅拌体24即翼轴200以与驱动电机100的旋转速度相等的旋转速度进行旋转，并使滚筒22即滚筒轴300以由行星齿轮机构40减速后的旋转速度进行旋转的形态，所述一轴驱动形态是能使搅拌体24以及滚筒22即翼轴200、滚筒轴300以及行星齿轮机构400以与驱动电机100相等的旋转速度一体地进行旋转的形态。
驱动电机100是外转子型DC无刷电机，包括转子110和定子120。转子110形成为有底的圆筒状，在其内周面上遍及整个圆周排列有永久磁铁111。如图4所示，在转子110的中央部形成有圆形的轴套部112。在轴套部112中形成有用于固定翼轴200的轴套孔113，并且在轴套孔113的外周上形成有环状的被卡合凹部114。被卡合凹部114的外周部遍及整个圆周具有凹凸部114a。被卡合凹部 114相当于本发明的第一被卡合部。
定子120在外周部具有线圈121。当从后述的电机驱动部给定子120的线圈121供给驱动电流时，转子110进行旋转。
滚筒轴300具有中空形状，并内包翼轴200和行星齿轮机构400。滚筒轴300的中央部向外侧膨出，该膨出的部位构成行星齿轮机构400的收容部。
行星齿轮机构400包括：太阳齿轮410、包围太阳齿轮410的环状的内齿轮420、介于太阳齿轮410和内齿轮420之间的多组行星齿轮430以及自由旋转地保持这些行星齿轮430的行星齿轮架440。
太阳齿轮410被固定在翼轴200上，内齿轮420被固定在滚筒轴300上。一组行星齿轮430包括相互咬合且反向进行旋转的第一齿轮和第二齿轮。行星齿轮架440包括向后方延伸的齿轮架轴441。齿轮架轴441与滚筒轴300同轴，并且内部形成为中空以供翼轴200插入。
翼轴200的后端部从齿轮架轴441向后方突出，并被固定在转子110上的轴套孔113。
在轴承单元500中，在中央部设置有圆筒状的轴承部510。在轴承部510的内部，在前部以及后部设有滚轴511、512，在前端部设有机械密封件513。滚筒轴300的外周面由滚轴511、512支承，并在轴承部510内顺滑地旋转。另外，通过机械密封件513防止水向轴承部510和滚筒轴300之间的侵入。如图5所示，在轴承部510的后端部，在内面上遍及整个圆周形成有齿条514。齿条514相当于本发明的第二被卡合部。
在轴承单元500中，在轴承部510的周围形成有固定凸缘部520。在固定凸缘部520的下端部形成有安装凸台521。
在固定凸缘部520中，通过螺钉紧固等固定方法，将轴承单元500固定在外槽20的后表面。在驱动单元30已安装于外槽20内的状态下，翼轴200以及滚筒轴300面临外槽20的内部。滚筒22被固定在滚筒轴300上，搅拌体24被固定在翼轴200上。
离合器机构部600包括：离合器体610、离合器弹簧620、离合器杆630、杆支承部640、离合器驱动装置650、接合棒660、安装板670。
如图6(a)～(c)所示，离合器体610大致具有圆盘形状。在离合器体610的前端部，在外周面上形成有环状的齿条611。齿条611以与轴承单元500的齿 条514卡合的方式形成。另外，在离合器体610的外周面上，在齿条611的后方形成有凸缘部612。进而，在离合器体610上，在后端部形成有环状的卡合凸缘部613。卡合凸缘部613具有与转子110的被卡合凹部114相同的形状，在外周部遍及整个圆周具有凹凸部613a。当卡合凸缘部613插入到被卡合凹部114时，凹凸部613a、114a就彼此卡合。卡合凸缘部613相当于本发明的第一卡合部，齿条611相当于本发明的第二卡合部。
齿轮架轴441插入到离合器体610的轴孔614。形成于轴孔614的内周面上的齿条614a和形成于齿轮架轴441的外周面上的齿条441a进行卡合。由此，离合器体610成为相对于齿轮架轴441，前后方向上的移动被允许并且圆周方向上的转动被限制的状态。
在离合器体610上，在轴孔614的外侧形成有环状的收容槽615，在该收容槽615中收容有离合器弹簧620。离合器弹簧620的一端与轴承部510的后端部相接，另一端与收容槽615的底面相接。
在离合器杆630的上端部形成有与离合器体610的凸缘部612的后表面接触并将凸缘部612向前方推的按压部631。离合器杆630由设置于杆支承部640上的支轴641转动自由地支承。在离合器杆630的下端部形成有安装轴632。
离合器驱动装置650配置于离合器杆630的下方。离合器驱动装置650包括力矩电机651和通过力矩电机651的力矩绕着水平轴旋转的圆盘状的凸轮652。在凸轮652的上面，在外周部设有凸轮轴653。凸轮652的旋转中心和离合器杆630的安装轴632的中心在前后方向上一致。凸轮652相当于本发明的工作体。
接合棒660向上下方向延伸，并将离合器杆630和凸轮652进行连结。接合棒660的上端部安装于离合器杆630的安装轴632上，下端部安装于凸轮652的凸轮轴653上。在接合棒660的中间位置一体地形成有弹簧661。弹簧661是拉伸弹簧。
杆支承部640以及离合器驱动装置650通过螺钉紧固等固定方法固定在安装板670上。安装板670通过螺钉固定在轴承单元500的安装凸台521上。
在驱动单元30的驱动形态从一轴驱动形态切换到二轴驱动形态的情况下，如图2所示，凸轮652利用力矩电机651进行旋转以使凸轮轴653位于最下方。随着凸轮652进行旋转，离合器杆630的下端部被接合棒660拉到下方。离合 器杆630以支轴641为中心向前方旋转，按压部631将离合器体610向前方推。离合器体610逆着离合器弹簧620的弹力向前方移动，离合器体610的齿条611和轴承单元500的齿条514进行卡合。
当离合器体610的凸轮轴653移动到中间的规定位置时，齿条611到达与齿条514卡合的位置。此时，接合棒660的弹簧661处于自然长度的状态。由于离合器体610不会移动到比该卡合位置更靠前的位置，所以当凸轮轴653从规定位置移动到最下方的位置时，如图2所示，弹簧661伸长到下方。这样，由于离合器杆630以向前方转动的方式被弹簧661拉动，所以从按压部631给位于卡合位置的离合器体610施加按压力。由此，能使齿条611与齿条514紧紧地卡合。
此外，以下，齿条611和齿条514卡合的离合器体610的位置称为第二位置。此外，以下，凸轮轴653位于最下方的凸轮652的工作状态称为第二工作状态。
当齿条611和齿条514卡合时，由于离合器体610相对于轴承单元500在圆周方向上的转动受限，成为不可转动的状态，所以行星齿轮机构400的齿轮架轴441，即行星齿轮架440成为以不能旋转的方式被固定的状态。在这样的状态下，当转子110旋转时，翼轴200以与转子110的旋转速度相等的旋转速度进行旋转，并且与翼轴200连结的搅拌体24也以与转子110的旋转速度相等的旋转速度进行旋转。随着翼轴200的旋转，在行星齿轮机构400中太阳齿轮410进行旋转。如上所述，由于行星齿轮架440处于被固定的状态，所以行星齿轮430的第一齿轮以及第二齿轮分别与太阳齿轮410同向以及逆向进行旋转，内齿轮420与太阳齿轮410同向进行旋转。由此，固定在内齿轮420上的滚筒轴300与翼轴200同向，并且以比翼轴200还要慢的旋转速度进行旋转，固定在滚筒轴300上的滚筒22以比搅拌体24还要慢的旋转速度与搅拌体24同向进行旋转。换言之，搅拌体24以比滚筒22还要快的旋转速度与滚筒22同向进行旋转。
另一方面，在驱动单元30的形态从二轴驱动形态切换到一轴驱动形态的情况下，如图3所示，凸轮652利用力矩电机651进行旋转以使凸轮轴653位于最上方。当凸轮652进行旋转，凸轮轴653向上方移动时，首先，弹簧661收缩。当弹簧661恢复到自然长度时，之后，随着凸轮轴653进行移动，接合棒660会向上方移动，离合器杆630的下端部被接合棒660推动，向上方移动。离 合器杆630以支轴641为中心向后方进行旋转，按压部631从离合器体610的凸缘部612分离。离合器体610利用离合器弹簧620的弹力向后方移动，离合器体610的卡合凸缘部613和转子110的被卡合凹部114进行卡合。
此外，以下，卡合凸缘部613和被卡合凹部114卡合的离合器体610的位置称为第一位置。此外，以下，凸轮轴653位于最上方的凸轮652的工作状态称为第一工作状态。
当卡合凸缘部613和被卡合凹部114卡合时，相对于转子110的向离合器体610的圆周方向的转动受限，离合器体610与转子110一同成为能旋转的状态。在这样的状态下，当转子110旋转时，翼轴200以及离合器体610以与转子110的旋转速度相等的旋转速度进行旋转。此时，在行星齿轮机构400中，太阳齿轮410和行星齿轮架440以与转子110相等的旋转速度进行旋转。由此，内齿轮420以与太阳齿轮410以及行星齿轮架440相等的旋转速度进行旋转，固定在内齿轮420上的滚筒轴300以与转子110相等的旋转速度进行旋转。即，在驱动单元30中，翼轴200、行星齿轮机构400以及滚筒轴300成为一体进行旋转。由此，滚筒22和搅拌体24一体地进行旋转。
图7是表示滚筒式洗衣机1的结构的框图。
滚筒式洗衣机1除了上述的结构之外，还具备：控制部701、存储部702、操作部703、水位传感器704、电机驱动部705、给水驱动部706、排水驱动部707、离合器驱动部708以及门锁装置709。
操作部703包括：电源按钮703a、开始按钮703b、程序选择按钮703c。电源按钮703a是用于接通以及关断滚筒式洗衣机1的电源的按钮。开始按钮703b是用于使运转开始的按钮。模式选择按钮703c是用于从涉及洗涤运转的多个运转程序中选择任意的运转程序的按钮。操作部703将与用户所操作的按钮相应的输入信号输出给控制部701。
水位传感器704检测外槽20内的水位，将与检测到的水位相应的水位检测信号输出给控制部701。
电机驱动部705根据来自控制部701的控制信号，将驱动电流供给驱动电机100。电机驱动部705具有检测驱动电机100的旋转速度的速度传感器、逆变电路等，并调整驱动电流以使驱动电机100以由控制部701设定的旋转速度进行旋转。
给水驱动部706根据来自控制部701的控制信号，将驱动电流供给给水阀51。排水驱动部707根据来自控制部701的控制信号，将驱动电流供给排水阀40。
离合器驱动装置650包括第一检测传感器654以及第二检测传感器655。第一检测传感器654以及第二检测传感器655构成本发明的状态检测部。第一检测传感器654检测出凸轮652成为第一工作状态，并将检测信号输出给控制部701。第二检测传感器655检测出凸轮652成为第二工作状态，并将检测信号输出给控制部701。离合器驱动部708根据来自第一检测传感器654以及第二检测传感器655的检测信号，并根据由控制部701输出的控制信号，将驱动电流供给力矩电机651。
门锁装置709根据来自控制部701的控制信号进行门12的上锁以及解锁。
存储部702包括EEPROM、RAM等。在存储部702中存储有用于执行各种洗涤运转程序的洗涤运转的程序。另外，在存储部702中存储有用于这些程序的执行的各种参数、各种控制标记。
控制部701基于来自操作部703、水位传感器704等的各个信号，根据存储于存储部702的程序，控制电机驱动部705、给水驱动部706、排水驱动部707、离合器驱动部708以及门锁装置709等。
滚筒式洗衣机1根据通过程序选择按钮703c进行的用户的选择操作，进行各种运转程序的洗涤运转。在洗涤运转中，按顺序执行洗涤工序、中间脱水工序、漂洗工序以及最终脱水工序。此外，根据运转程序，有时候会进行两次以上中间脱水工序和漂洗工序。
在洗涤工序以及漂洗工序中，驱动单元30的驱动形态被切换到二轴驱动形态。水在外槽20内储存至不到投入口11的下缘的规定的水位以使滚筒22内的洗涤物浸入水中，在该状态下，驱动电机100交互进行正转以及反转。由此，滚筒22和搅拌体24以搅拌体24的旋转速度比滚筒22的旋转速度快的状态交替进行正转以及反转。此时，滚筒22以作用于洗涤物的离心力变得比重力小的旋转速度进行旋转。
滚筒22内的洗涤物通过提升筋23被举起且落下，摔到滚筒22的内周面。除此之外，在滚筒22的后部，洗涤物接触到旋转的搅拌体24的叶片24a，洗涤物被叶片24a摩擦、通过叶片24a洗涤物被搅拌。由此，洗涤物被洗涤或者漂洗。
在中间脱水工序以及最终脱水工序中，驱动单元30的驱动形态切换为一轴驱动形态。驱动电机100即滚筒22以及搅拌体24以作用于滚筒22内的洗涤物的离心力远远大于重力的旋转速度进行旋转。洗涤物通过离心力的作用被按压到滚筒22的内周面上进行脱水。
那么，当进行从二轴驱动形态到一轴驱动形态的切换时，当离合器体610通过离合器弹簧620的弹力移动至第一位置时，如图8所示，有时候凹凸部613a、114a会往转子110即驱动电机100的旋转方向彼此错位。此外，在图8中，方便起见，用点划线表示离合器体610。
如此，在凹凸部613a、114a彼此错位的情况下，离合器体610不会前进至第一位置，卡合凸缘部613不会和被卡合凹部114卡合。在这种状态下，在使驱动电机100正式旋转进行脱水的情况下，由于驱动电机100的旋转会比较迅速地上升，因而会有驱动电机100在卡合凸缘部613不能和被卡合凹部114卡合的状态下仍旧提升至用于脱水的旋转速度的隐患。这样的话，由于驱动电机100的旋转不正确地传递给滚筒轴300，因此会有滚筒22不正确地旋转，不能进行洗涤物的正确的脱水的隐患。
此外，在进行从一轴驱动形态到二轴驱动形态的切换时，当离合器体610由离合器杆630推动而移动至第二位置时，齿条611的各个齿和齿条514的各个齿有时候会往离合器体610的圆周方向错位。在这种情况下，离合器体610不会行进到第二位置，齿条611、514彼此不会卡合。因此，洗涤、漂洗时，当驱动电机100在齿条611、514彼此未卡合的状态下正式进行旋转时，会有滚筒22不正确地旋转，不正确地进行洗涤物的洗涤、漂洗的隐患。
因此，在本实施方式中，通过控制部701执行用于精度良好地进行从二轴驱动形态到一轴驱动形态的切换的一轴切换处理，以及用于精度良好地进行从一轴驱动形态到二轴驱动形态的切换的二轴切换处理。以下，对于一轴切换处理以及二轴切换处理进行详细说明。
图9是表示一轴切换处理的流程图。
在一轴切换处理开始之前，驱动单元30的驱动形态为二轴驱动形态，离合器驱动装置650的凸轮652处于第二工作状态。
当一轴切换处理开始时，控制部701使力矩电机651进行旋转(S101)。控制部701判断是否由第一检测传感器654输出了检测信号(S102)。当通过凸轮 652进行旋转直到凸轮轴653位于最上方，从而由第一检测传感器654输出检测信号时(S102：YES)，控制部701使力矩电机651停止(S103)。如上所述，离合器体610在凹凸部613a、114a彼此未错位，卡合凸缘部613和被卡合凹部114卡合的情况下，到达第一位置。另一方面，离合器体610在凹凸部613a、114a彼此存在错位，卡合凸缘部613未和被卡合凹部114卡合的情况下，不会到达第一位置。
当使力矩电机651停止时，接着，控制部701将驱动电机100的旋转速度设定为规定的预旋转速度，将与该预旋转速度对应的驱动电流提供给驱动电机100，使驱动电机100预旋转(S104)。预旋转速度设定为比按照一轴驱动形态使驱动电机100正式旋转时的旋转速度慢的旋转速度，例如20rpm～30rpm左右的旋转速度。由此，提供给预旋转时的驱动电机100的驱动电流比正式旋转时的驱动电机100的驱动电流小。
驱动电机100的转子110缓慢地进行旋转。在凹凸部613a、114a彼此存在错位的情况下，当被卡合凹部114随着转子110的旋转而进行旋转到凹凸部613a、114a彼此一致的位置时，卡合凸缘部613和被卡合凹部114卡合。离合器体610到达第一位置。
控制部701经过规定的预旋转时间后(S105)，停止驱动电机100(S106)。预旋转时间设定为例如通过预旋转速度下的旋转，使得驱动电机100的转子110从半次旋转到多次旋转的时间。由于驱动电机100的转子110旋转得比图8所示的与被卡合凹部114的凹凸部114a的一个间距对应的角度R大，因此即使在卡合凸缘部613的凹凸部613a和被卡合凹部114的凹凸部114a之间产生将近一个间距的错位，也能使卡合凸缘部613和被卡合凹部114卡合。
如此，一轴切换处理结束。然后，控制部701使驱动电机100正式旋转。例如，在按照一轴驱动形态进行脱水工序的情况下，控制部701将与用于脱水的旋转速度对应的驱动电流提供给驱动电机100，使驱动电机100进行旋转。
图10是表示二轴切换处理的流程图。
二轴切换处理开始之前，驱动单元30的驱动形态为一轴驱动形态，离合器驱动装置650的凸轮652处于第一工作状态。
当二轴切换处理开始时，控制部701使力矩电机651进行旋转(S201)。控制部701判断是否由第二检测传感器655输出了检测信号(S202)。当通过凸轮 652进行旋转直到凸轮轴653位于最下方，从而由第二检测传感器655输出检测信号时(S202：YES)，控制部701使力矩电机651停止(S203)。如上所述，离合器体610在齿条611、514彼此卡合的情况下，到达第二位置。另一方面，离合器体610在齿条611、514彼此存在错位，齿条611、514彼此未卡合的情况下，不会到达第二位置。
当使力矩电机651停止时，接着，控制部701将驱动电机100的旋转速度设定为规定的预旋转速度，将与该预旋转速度对应的驱动电流提供给驱动电机100，使驱动电机100预旋转(S204)。预旋转速度设定为比按照二轴驱动形态使驱动电机100正式旋转时的旋转速度慢的旋转速度。由此，提供给预旋转时的驱动电机100的驱动电流比正式旋转时的驱动电机100的驱动电流小。按照二轴切换处理进行设定的预旋转速度既可以与按照一轴切换处理进行设定的预旋转速度相同，也可以不同。
驱动电机100的转子110缓慢地进行旋转。翼轴200伴随着转子110的旋转而进行旋转，由此，当太阳齿轮410进行旋转时，行星齿轮430进行旋转。此处，在齿条611、514彼此未卡合的情况下，内齿轮420和行星齿轮架440两者为能够进行旋转的状态，但是由于内齿轮420与滚筒22相连，行星齿轮架440与离合器体610相连，因此旋转所需的力矩较小即可的行星齿轮架440伴随着行星齿轮430的旋转而进行旋转。当离合器体610伴随着行星齿轮架440的旋转而进行旋转时，相互错位的齿条611、514彼此卡合。离合器体610到达第一位置。
控制部701经过规定的预旋转时间后(S205)，停止驱动电机100(S206)。预旋转时间设定为例如通过预旋转速度下的旋转，使得驱动电机100的转子110从半次旋转到多次旋转的时间。二轴切换处理的预旋转时间既可以与一轴切换处理的预旋转时间相同，也可以不同。
如此，二轴切换处理结束。然后，控制部701使驱动电机100正式旋转。例如，在按照二轴驱动形态进行洗涤工序的情况下，控制部701将与用于洗涤的旋转速度对应的驱动电流提供给驱动电机100，使驱动电机100进行旋转。或者，例如，在按照二轴驱动形态进行漂洗工序的情况下，控制部701将与用于漂洗的旋转速度对应的驱动电流提供给驱动电机100，使驱动电机100进行旋转。
<实施方式的效果>
以上，如已说明的，根据本实施方式，为了从二轴驱动形态到一轴驱动形态的切换，在使离合器机构部600工作以使离合器体610向第一位置移动之后，执行一轴切换处理，该一轴处理使驱动电机100进行旋转以使未卡合的卡合凸缘部613和被卡合凹部114卡合。由此，在使离合器机构部600工作以使离合器体610向第一位置移动时，即使在卡合凸缘部613和被卡合凹部114上产生错位，也能消除该错位，使卡合凸缘部613和被卡合凹部114卡合。因此，由于能精度良好地进行从二轴驱动形态到一轴驱动形态的切换，因而能正确地进行按照一轴驱动形态进行的滚筒22以及搅拌体24的旋转，能进行正确的脱水。
进而，根据本实施方式，由于设计成对于一轴切换处理，在该一轴切换处理之后以比按照一轴驱动形态使驱动电机100进行旋转时的驱动电流小的驱动电流，使驱动电机100进行旋转，因而能使驱动电机100缓慢地进行旋转。由此，卡合凸缘部613和被卡合凹部114容易卡合，能提高切换的精度。
进而，根据本实施方式，为了从一轴驱动形态到二轴驱动形态的切换，在使离合器机构部600工作以使离合器体610向第二位置移动之后，执行二轴切换处理，该二轴切换处理使驱动电机100进行旋转以使未卡合的齿条611和齿条514卡合。由此，在使离合器机构部600工作以使离合器体610向第二位置移动时，即使在齿条611和齿条514上产生错位，也能消除该错位，使齿条611、514彼此卡合。因此，由于能精度良好地进行从一轴驱动形态到二轴驱动形态的切换，因而能正确地进行按照二轴驱动形态进行的滚筒22以及搅拌体24的旋转，能进行正确的洗涤或漂洗。
进而，根据本实施方式，由于设计成对于二轴切换处理，在该二轴切换处理之后以比按照二轴驱动形态使驱动电机100进行旋转时的驱动电流小的驱动电流，使驱动电机100进行旋转，因而能使驱动电机100缓慢地进行旋转。由此，齿条611和齿条514容易卡合，能提高切换的精度。
进而，根据本实施方式，由于设计成通过使用第一检测传感器654以及第二检测传感器655检测凸轮652的工作状态，从而间接检测离合器体610的位置，因而不使用直接检测离合器体610的位置的传感器等就能切换驱动单元30的驱动形态。
<变更例>
以上，虽然关于本发明的实施方式进行了说明，但是本发明不受上述实施 方式等的任何限制，另外，本发明的实施方式也可以进行上述以外的各种变更。
例如，在上述实施方式中，在离合器体610上形成有卡合凸缘部613作为第一卡合部，在驱动电机100的转子110上形成有被卡合凹部114作为第一被卡合部。但是，只要能通过相互卡合，将离合器体610和转子110就圆周方向进行固定，第一卡合部以及第一被卡合部的结构无论怎样都可以。此外，在上述实施方式中，在离合器体610上形成有齿条611作为第二卡合部，在轴承单元500的轴承部510上形成有齿条514作为第二被卡合部。然而，只要能通过相互卡合，将离合器体610和轴承部510就圆周方向进行固定，第二卡合部以及第二被卡合部的结构无论怎样都可以。
进而，在上述实施方式中，对于一轴切换处理以及二轴切换处理，经过预旋转时间后，驱动电机100停止。但是，也可以在经过了预旋转时间后，不使驱动电机100停止而使其从预旋转就此过渡到用于脱水、洗涤的旋转。
进而，在上述实施方式中，滚筒轴300固定在内齿轮420上，并且行星架轴441即行星齿轮架440与离合器体610连结。由此，在二轴驱动形态下，当翼轴200在行星齿轮架440由离合器体610进行固定的状态下进行旋转时，行星齿轮430伴随着太阳齿轮410的旋转而进行自转，内齿轮420以比太阳齿轮410慢的旋转速度进行旋转。但是，如图11所示，也可以采用滚筒轴300固定在行星齿轮架440上的结构。在这种情况下，顶端部425a从滚筒轴300向后方突出的轴部425安装在内齿轮420上。而且，离合器体610与轴部425连结。即，离合器体610经由轴部425与内齿轮420连结。进而，行星齿轮430变更为仅具有第一齿轮。在二轴驱动形态下，当翼轴200在内齿轮420由离合器体610进行固定的状态下进行旋转时，行星齿轮430伴随着太阳齿轮410的旋转而进行自转以及公转，行星齿轮架440以比太阳齿轮410慢的旋转速度进行旋转。由此，固定在行星齿轮架440上的滚筒轴300进行旋转。
进而，由于齿条611、514的齿与齿之间的间距小，因此与从二轴驱动形态到一轴驱动形态的切换的情况相比，很难产生齿条611、514彼此不卡合的状况。因此，只要齿条611、514彼此卡合的精度足够高，对于二轴切换处理，也可以省略用于使驱动电机100进行预旋转的步骤S204至S206的处理。
进而，在上述实施方式中，滚筒22以相对于水平方向倾斜的倾斜轴为中心进行旋转。但是，滚筒式洗衣机1也可以采用滚筒22以水平轴为中心进行旋转 的结构。
进而，虽然上述实施方式的滚筒式洗衣机1不具备烘干功能，但本发明也能用于具备烘干功能的滚筒式洗衣机即滚筒式洗衣烘干机。
此外，本发明的实施方式在权利要求范围内表现出的技术思想的范围内可以适当地进行各种变更。
附图标记说明
10：壳体；20：外槽；22：滚筒；24：搅拌体(旋转体)；24a：叶片(突状部)；30：驱动单元(驱动部)；100：驱动马达；110：转子；114：被卡合凹部(第一被卡合部)；200：翼轴(第一旋转轴)；300：滚筒轴(第二旋转轴)；400：行星齿轮机构；410：太阳齿轮；420：内齿轮；430：行星齿轮；440：行星齿轮架；500：轴承单元；510：轴承部；514：齿条(第二被卡合部)；600：离合器机构部；610：离合器体；611：齿条(第二卡合部)；613：卡合凸缘部(第一卡合部)；650：离合器驱动装置；652：凸轮(工作体)；654：第一检测传感器(状态检测部)；655：第二检测传感器(状态检测部)；701：控制部。

Claims (5)

  1. 一种滚筒式洗衣机，其特征在于，具备：
    外槽，配置在壳体内；
    滚筒，配置在所述外槽内，并且能以水平轴或相对于水平方向倾斜的倾斜轴为中心进行旋转；
    旋转体，配置在所述滚筒的后部，并且表面具有与洗涤物接触的突状部；
    驱动部，使所述滚筒以及所述旋转体旋转；以及
    控制部，控制所述驱动部的工作，
    所述驱动部包括：
    驱动电机；
    第一旋转轴，将所述驱动电机的旋转传递给所述旋转体；
    第二旋转轴，将所述驱动电机的旋转传递给所述滚筒；以及
    离合器机构部，在一轴驱动形态和二轴驱动形态之间切换所述驱动部的驱动形态，所述一轴驱动形态是使所述第一旋转轴和所述第二旋转轴以相同的旋转速度一体地旋转的形态，所述二轴驱动形态是使所述第一旋转轴和所述第二旋转轴以不同的旋转速度分别旋转的形态，
    所述离合器机构部包括具有第一卡合部的离合器体，
    通过所述离合器体被移动至第一位置，并且在该第一位置处所述第一卡合部与伴随着所述驱动电机的旋转而进行旋转的第一被卡合部卡合，从而所述驱动形态被切换为所述一轴驱动形态，
    所述控制部执行一轴切换处理以进行从所述二轴驱动形态到所述一轴驱动形态的切换，该一轴切换处理是在使所述离合器机构部工作以使所述离合器体移动至所述第一位置之后，使所述驱动电机旋转以使未卡合的所述第一卡合部与所述第一被卡合部卡合的处理。
  2. 根据权利要求1所述的滚筒式洗衣机，其特征在于，
    所述控制部对于所述一轴切换处理，在该一轴切换处理之后使所述驱动电机以比按照所述一轴驱动形态使所述驱动电机旋转时的驱动电流小的驱动电流进行旋转。
  3. 根据权利要求1或2所述的滚筒式洗衣机，其特征在于，
    所述驱动部还包括行星齿轮机构，该行星齿轮机构具有：太阳齿轮，伴随 着所述电机的旋转而进行旋转；环状的内齿轮，包围该太阳齿轮；多个行星齿轮，介于所述太阳齿轮和所述内齿轮之间；以及行星齿轮架，以旋转自由的方式保持这些行星齿轮，其中，所述行星齿轮架以及所述内齿轮中的一方被固定在所述第二旋转轴上，
    所述离合器体具有第二卡合部，并且与所述行星齿轮架和所述内齿轮中的另一方，以相对于该另一方往圆周方向的转动被限制并且所述第二旋转轴的轴线方向的移动被允许的状态相连结，
    通过所述离合器体被移动至第二位置，在该第二位置处所述第二卡合部与伴随着所述驱动电机的旋转而不旋转的第二被卡合部卡合，成为所述另一方不能旋转的状态，从而所述驱动形态被切换为所述二轴驱动形态，
    即使所述离合器机构部工作以使所述离合器体移动至所述第二位置，所述第二卡合部也不会与所述第二被卡合部卡合，此时，所述另一方伴随着所述驱动电机的旋转而进行旋转从而所述离合器体进行旋转，
    所述控制部执行二轴切换处理以进行从所述二轴驱动形态到所述一轴驱动形态的切换，该二轴切换处理是在使所述离合器机构部工作以使所述离合器体移动至所述第二位置之后，使所述驱动电机旋转以使未卡合的所述第二卡合部与所述第二被卡合部卡合的处理。
  4. 根据权利要求3所述的滚筒式洗衣机，其特征在于，
    所述控制部对于所述二轴切换处理，在该二轴切换处理之后使所述驱动电机以比按照所述二轴驱动形态使所述驱动电机旋转时的驱动电流小的驱动电流进行旋转。
  5. 根据权利要求3或4所述的滚筒式洗衣机，其特征在于，
    还具备用于使所述离合器体移动的离合器驱动装置，
    所述离合器驱动装置包括：
    工作体，可以迁移至使所述离合器体移动至所述第一位置的第一工作状态和使所述离合器体移动至所述第二位置的第二工作状态；以及
    状态检测部，检测所述工作体的工作状态，
    所述控制部，
    对于所述一轴切换处理，根据所述状态检测部的检测结果使所述离合器驱动装置工作，以使所述工作体迁移至所述第一工作状态，
    对于所述二轴切换处理，根据所述状态检测部的检测结果使所述离合器驱动装置工作，以使所述工作体迁移至所述第二工作状态。
PCT/CN2015/079426 2014-06-12 2015-05-21 滚筒式洗衣机 WO2015188683A1 (zh)

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