WO2017092643A1 - 滚筒洗衣机 - Google Patents

滚筒洗衣机 Download PDF

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Publication number
WO2017092643A1
WO2017092643A1 PCT/CN2016/107605 CN2016107605W WO2017092643A1 WO 2017092643 A1 WO2017092643 A1 WO 2017092643A1 CN 2016107605 W CN2016107605 W CN 2016107605W WO 2017092643 A1 WO2017092643 A1 WO 2017092643A1
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WO
WIPO (PCT)
Prior art keywords
clutch
drum
clutch body
rotating
rotating shaft
Prior art date
Application number
PCT/CN2016/107605
Other languages
English (en)
French (fr)
Inventor
米田昌令
竹内晴美
Original Assignee
青岛海尔洗衣机有限公司
海尔亚洲株式会社
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, 海尔亚洲株式会社 filed Critical 青岛海尔洗衣机有限公司
Priority to US15/781,105 priority Critical patent/US10745845B2/en
Priority to CN201680070027.5A priority patent/CN108291353A/zh
Priority to EP16869953.6A priority patent/EP3385437A4/en
Publication of WO2017092643A1 publication Critical patent/WO2017092643A1/zh

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Classifications

    • 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 
    • D06F37/304—Arrangements or adaptations of electric motors
    • 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
    • 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
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle
    • 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

Definitions

  • the present invention relates to a drum washing machine.
  • the drum washing machine can continuously perform the operation from washing to drying, or can only perform laundry without drying.
  • a drum washing machine rotates a washing machine into a drum by rotating a drum of a horizontal axis type in an outer cylinder in which water is stored at the bottom, and lifting the laundry by a lifting protrusion provided in the drum. Wash the laundry on the circumference.
  • the laundry is stirred by lifting the projections as described above, the laundry is hardly entangled with each other or rubbed against each other. Therefore, in the drum washing machine, in order to improve the washing performance, a structure may be employed in which a stirring body is provided on the rear surface of the drum, and the drum and the stirring body are independently rotated at different rotation speeds during washing and rinsing (refer to the patent) Document 1).
  • the drum and the agitating body are rotationally driven by a drive motor.
  • the rotation shaft of the drum is coupled to the carrier of the planetary gear mechanism, and the rotation of the drive motor is transmitted to the drum via the planetary gear mechanism.
  • the clutch mechanism portion includes a clutch body and a moving mechanism portion.
  • the clutch body is coupled to the internal gear constituting the planetary gear mechanism so as not to be rotatable relative to the internal gear.
  • the moving mechanism unit moves the clutch body between the drive motor side and the bearing unit side that rotatably supports the rotary shaft of the drum.
  • a spline is formed along the circumferential direction at the end portion on the rotor side and the end on the bearing unit side, and a spline corresponding to the spline on the clutch body side is formed in the rotor and the bearing unit.
  • the splines of the clutch body mesh with the splines of the bearing unit.
  • the internal gear is fixed to the bearing unit via the clutch body so as not to be circumferentially rotatable.
  • the drum rotates independently of the agitating body at a slower rotation speed than the agitating body in accordance with the reduction ratio of the planetary gear mechanism.
  • the splines of the clutch body mesh with the splines of the rotor.
  • the internal gear is fixed to the rotor via the clutch body.
  • the drum is stirred The same rotation speed of the mixing body rotates integrally with the agitating body.
  • Patent Document 1 Japanese Laid-Open Patent Publication No. 2015-167663
  • the present invention has been made in view of the above problems, and an object of the invention is to provide a drum washing machine including a rotating body at a rear portion of a drum, which can reduce the first form in which the drum and the rotating body rotate independently, and the drum and the rotating body The sound generated when the driving form is switched between the second forms of rotation.
  • a drum washing machine includes: an outer cylinder disposed in the casing; and a drum disposed in the outer cylinder and rotatable about a horizontal axis or an inclined axis inclined with respect to a horizontal direction; a body disposed at a rear portion of the drum and having a protrusion with a surface in contact with the laundry; a moving portion that rotates the drum and the rotating body.
  • 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 is coaxially disposed with the first rotating shaft, a rotation of the drive motor is transmitted to the drum; a planetary gear mechanism having a sun gear that rotates with rotation of the drive motor, an annular internal gear that surrounds the sun gear, and is sandwiched between the sun gear and the inside a plurality of planet gears between the gears, and a planet carrier that rotatably holds the planet gears, one of the carrier and the internal gear is fixed to the second rotating shaft; and the clutch mechanism portion
  • the switching between the first form and the second form is based on a driving form of the driving unit, wherein the first form is a driving form for independently rotating the first rotating shaft and the second rotating shaft, and the second The form is a drive form in which the first rotating shaft and the second rotating shaft are integrally rotated.
  • the clutch mechanism portion includes a clutch body coupled to the other side in a state of being rotatable together with the other of the carrier and the internal gear and movable in an axial direction of the second rotating shaft; And the moving mechanism unit moves the clutch body to the first position when switching to the first mode, and moves the clutch body to the second position when switching to the second form.
  • a first engaging portion having a concave-convex shape and a second engaging portion having a concave-convex shape are formed in the clutch body, and a first engaged portion is formed in a fixing portion that does not rotate together with the driving motor, the first The engaged portion has a concavo-convex shape corresponding to the concavo-convex shape of the first engaging portion, and meshes with the first engaging portion in the circumferential direction when the clutch body moves to the first position,
  • a second engaged portion having a concave-convex shape corresponding to the uneven shape of the second engaging portion is formed in a rotating portion in which the driving motor rotates together, and the clutch body is moved to the The second position is engaged with the second engaging portion in the circumferential direction.
  • a fixing portion side cushioning member is disposed on the clutch body side or the fixing portion side, and the fixing portion side cushioning member first touches the object side when the first engaging portion is engaged with the first engaged portion And weakening the impact force generated between the clutch body and the fixing portion.
  • the other coupled to the clutch body for example, the carrier is not rotated, and the drive mode is switched to the first position.
  • the drive motor rotates, one of the second rotating shafts connected to the internal gear, for example, rotates at a rotational speed different from the rotational speed of the first rotating shaft in accordance with the reduction ratio of the planetary gear mechanism.
  • the drum and the rotating body independently rotate at different rotational speeds.
  • the fixing portion side cushioning member disposed on the clutch body side or the fixed portion side first touches the target side, thereby weakening the clutch body and fixing
  • the impact force generated between the portions can reduce the impact sound generated between the clutch body side and the fixed portion side.
  • the driving portion may further include a bearing portion that rotatably supports the second rotating shaft.
  • the fixing portion is attached to the bearing portion.
  • the fixing portion side cushioning member is disposed on the fixing portion side and has a flange portion that is sandwiched by the fixing portion and the bearing portion.
  • the fixing portion side cushioning member is fixed to the fixing portion side by being sandwiched by the bearing portion and the fixing portion. Therefore, the fixing portion side cushioning member can be easily fixed to the fixing portion side.
  • the rotating portion side cushioning member may be disposed on the clutch body side or the rotating portion side, and the rotating portion side cushioning member may mesh with the second engaged portion at the second engaging portion When the object side is touched first, the impact force generated between the clutch body and the rotating portion is weakened.
  • the rotating portion side cushioning member disposed on the clutch body side or the rotating portion side first touches the target side, and the clutch body and the rotating portion are weakened.
  • the impact force generated between them can thus reduce the impact sound generated between the clutch body side and the rotating portion side.
  • a drum washing machine includes: an outer cylinder disposed in the casing; and a drum disposed in the outer cylinder and rotatable about a horizontal axis or an inclined axis inclined with respect to a horizontal direction; a body disposed at a rear portion of the drum and having a protrusion on a surface in contact with the laundry; and a driving portion that rotates the drum and the rotating body.
  • 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 is coaxially disposed with the first rotating shaft, a rotation of the drive motor is transmitted to the drum; a planetary gear mechanism having a sun gear that rotates with rotation of the drive motor, an annular internal gear that surrounds the sun gear, and is sandwiched between the sun gear and the inside a plurality of planet gears between the gears; and a planet carrier that rotatably holds the planet gears, one of the carrier and the internal gear is fixed to the second rotating shaft; and the clutch mechanism portion Switching between a form and a second form is based on the driving shape of the driving portion
  • the first form refers to a driving form in which the first rotating shaft and the second rotating shaft rotate independently
  • the second form refers to the first rotating shaft and the second rotating shaft One-rotation drive form.
  • the clutch mechanism portion includes a clutch body coupled to the other side in a state of being rotatable together with the other of the carrier and the internal gear and movable in an axial direction of the second rotating shaft; And the moving mechanism unit moves the clutch body to the first position when switching to the first mode, and moves the clutch body to the second position when switching to the second form.
  • a first engaging portion having a concave-convex shape and a second engaging portion having a concave-convex shape are formed in the clutch body, and a first engaged portion is formed in a fixing portion that does not rotate together with the driving motor, the first The engaged portion has a concavo-convex shape corresponding to the concavo-convex shape of the first engaging portion, and meshes with the first engaging portion in the circumferential direction when the clutch body moves to the first position, A second engaged portion having a concave-convex shape corresponding to the uneven shape of the second engaging portion is formed in a rotating portion in which the driving motor rotates together, and the clutch body is moved to the The second position is engaged with the second engaging portion in the circumferential direction.
  • a rotating portion side cushioning member is disposed on the clutch body side or the rotating portion side, and the rotating portion side cushioning member first touches the object when the second engaging portion is engaged with the second engaged portion The side weakens the impact force generated between the clutch body and the rotating portion.
  • the impact sound generated between the clutch body side and the rotating portion side can be reduced similarly to the drum washing machine of the first aspect.
  • the drum washing machine may be configured such that the rotating portion side cushioning member is disposed on the clutch body side and has a claw portion, and the clutch body has a hole portion for the claw portion to be inserted Locked.
  • the rotating portion side cushioning member is fixed to the clutch body side by locking the claw portion to the hole portion of the clutch body. Therefore, the rotating portion side cushioning member can be easily fixed to the clutch body side.
  • FIG. 1 is a side cross-sectional view showing a configuration of a drum 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 cross-sectional view of a main portion in which the periphery of the clutch body according to the embodiment is enlarged.
  • FIG. 5 is a cross-sectional view of a main portion in which the periphery of the clutch body according to the embodiment is enlarged.
  • Fig. 6 is a front elevational view showing the rotor of the drive motor according to the embodiment.
  • FIGS. 7(a) and 7(b) are a front view and a rear view, respectively, of the clutch receiving plate according to the embodiment, and FIG. 7(c) is a front view of the bearing side cushioning member.
  • FIG. 8 is a front view, a side longitudinal cross-sectional view, and a rear view, respectively, of the clutch body according to the embodiment.
  • (d) of FIG. 8 is a cross-sectional view of the carrier shaft according to the embodiment.
  • FIG. 9 (a) of FIG. 9 is a state transition diagram showing a state in which the spline of the clutch body and the clutch receiving plate are spline-engaged when the single-shaft drive mode is switched to the two-axis drive mode according to the embodiment
  • FIG. 9( b) is a state transition diagram showing a state in which the meshing portion of the clutch body meshes with the engaged portion of the clutch receiving portion when the biaxial drive mode is switched to the single-shaft drive mode according to the embodiment.
  • FIG. 10 is a block diagram showing a configuration of a drum washing machine according to an embodiment.
  • FIG. 11 is a schematic view showing a state in which the laundry in the drum is biased to the left side as viewed from the front side
  • (b) of FIG. 11 is a view showing the inside of the drum according to the embodiment.
  • FIG. 12 is a timing chart showing energization operation of the torque motor and the drive motor of the clutch drive device when the drive mode of the drive unit is switched according to the embodiment.
  • FIG. 13 is a cross-sectional view of an enlarged main part of a periphery of a clutch body according to a modification.
  • FIG. 14 are a front view and a side cross-sectional view of a bearing-side cushioning member according to a modification, respectively.
  • Fig. 15 is a front elevational view showing a rotor of a drive motor according to a modification.
  • FIG. 16 is a timing chart showing an energization operation of the torque motor and the drive motor of the clutch drive device when the driving form of the drive unit is switched according to the modification.
  • 17 is a cross-sectional view showing the configuration of a drive unit according to a modification.
  • FIG. 1 is a side cross-sectional view showing the structure of a drum washing machine 1.
  • the drum washing machine 1 is provided with a casing 10 that constitutes an appearance.
  • the front surface 10a of the casing 10 is inclined from the center portion to the upper portion, and the laundry inlet 11 is formed on the inclined surface.
  • the inlet 11 is covered by a door 12 that is freely opened and closed.
  • the outer cylinder 20 is elastically supported by a plurality of dampers 21.
  • the drum 22 is rotatably disposed in the outer cylinder 20.
  • the outer cylinder 20 and the drum 22 are inclined such that the rear surface side thereof is lowered 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 cylinder 20 and the drum 22 can be set to about 10 to 20 degrees.
  • the opening portion 20a of the front surface of the outer cylinder 20 and the opening portion 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.
  • three lifting protrusions 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 torque for driving the drum 22 and the agitating body 24 is disposed behind the outer cylinder 20.
  • the drive unit 30 corresponds to the drive unit of the present invention.
  • the driving unit 30 rotates the drum 22 and the agitating body 24 in the same direction at different rotational speeds during the washing process and the rinsing process. Specifically, the drive unit 30 rotates the drum 22 at a rotation speed smaller than the gravity by the centrifugal force applied to the laundry in the drum 22, and rotates the agitating body 24 at a rotation speed faster than the rotation speed of the drum 22. .
  • the drive unit 30 integrally rotates the drum 22 and the agitating body 24 with the centrifugal force applied to the laundry in the drum 22 to be 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 cylinder 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 cylinder 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 housed in the detergent box 50 so as to be freely drawn from the front.
  • the detergent box 50 is connected to the water supply valve 51 disposed at the rear upper portion in the casing 10 through the water supply hose 52. Further, the detergent box 50 is connected to the upper portion of the outer cylinder 20 through a water injection pipe 53.
  • the water supply valve 51 is opened, tap water from the faucet is supplied into the outer cylinder 20 through the water supply hose 52, the detergent box 50, and the water injection pipe 53. At this time, the detergent contained in the detergent container 50a is supplied into the outer cylinder 20 along the water flow.
  • FIG. 6 is a front view of the rotor 110 of the drive motor 100.
  • 7(a) and 7(b) are a front view and a rear view, respectively, of the clutch receiving plate 530, and (c) of Fig. 7 is a front view of the bearing side cushioning member 540.
  • FIGS. 8(a) to 8(c) are a front view, a side longitudinal sectional view, and a rear view, respectively, of the clutch body 610.
  • (d) of FIG. 8 is a cross-sectional view of the carrier shaft 441. It should be noted that in FIGS. 4 and 5, the illustration of the clutch lever 630 is omitted.
  • 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 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 planetary gear mechanism 400 decelerates and transmits the rotation of the wing shaft 200, that is, the rotation of the rotor 110 of the drive motor 100, 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 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 between the two-axis driving mode.
  • the drum shaft 300 and the planetary gear mechanism 400 are in a driving form that rotates integrally with a rotational speed equal to that of the drive motor 100.
  • the wing shaft 200 corresponds to the first rotating shaft of the present invention
  • the drum shaft 300 corresponds to the second rotating shaft of the present invention.
  • the biaxial driving form corresponds to the first aspect of the present invention
  • the uniaxial driving form corresponds to the present invention.
  • the second form corresponds to the first aspect of the present invention
  • 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 of a reinforced resin obtained by mixing a reinforcing material such as glass into a resin, and is formed into a bottomed cylindrical shape, and a permanent magnet 111 is arranged on the inner circumferential surface thereof over the entire circumference.
  • the clutch receiving portion 130 is integrally formed with the rotor 110 at the center portion of the rotor 110. The clutch receiving portion 130 rotates together with the drive motor 100, that is, the rotor 110.
  • the clutch receiving portion 130 includes a boss portion 131, an engaged portion 132, and a contact surface 133.
  • the boss portion 131 has a substantially trapezoidal shape in cross section, and a boss hole 131a through which the wing shaft 200 passes is formed at a central portion thereof.
  • the boss hole 131a communicates with a recess 112 formed at a central portion of the rear surface of the rotor 110.
  • the engaged portion 132 is formed on the outer circumference of the boss portion 131 and has a substantially annular shape. In the engaged portion 132, a plurality of engaging concave portions 132b that are recessed toward the depth direction side from the surface 132a of the engaged portion 132 are formed at substantially equal intervals in the circumferential direction.
  • the engaged portion 132 is formed with a concavo-convex shape along the circumferential direction through the surface 132a and the engaging concave portion 132b.
  • the contact surface 133 is provided between the boss portion 131 and the engaged portion 132, and is formed with a flat surface that protrudes from the surface 132a of the engaged portion 132.
  • the clutch receiving portion 130 corresponds to the rotating portion of the present invention
  • the engaged portion 132 corresponds to the second 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 includes a wing shaft 200 and a 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 planet wheels 430 interposed between the sun gear 410 and the internal gear 420, and rotatively holding the planetary gears 430 Planet carrier 440.
  • the sun gear 410 is fixed to the wing shaft 200 and rotates in accordance with the rotation of the drive motor 100.
  • the internal gear 420 is fixed to the drum shaft 300.
  • a set of planet wheels 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 planet 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 131a of the rotor 110 by a mounting bolt 210.
  • the head of the mounting bolt 210 is received in the recess 112 of the rotor 110, It does not protrude further rearward than the rotor 110.
  • a cylindrical bearing portion 510 is provided at the center portion. Inside the bearing portion 510, rolling bearings 511, 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 received by the rolling bearings 511 and 512, and smoothly rotates in the bearing portion 510. In addition, water is prevented from entering between the bearing portion 510 and the drum shaft 300 by the mechanical seal 513.
  • 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.
  • a clutch receiving plate 530 is attached to the rear end portion of the bearing portion 510.
  • the clutch receiving plate 530 is formed of the same reinforcing resin as the rotor 110, and includes a receiving body portion 531, a flange portion 532, and a pressing portion 533.
  • the receiving main body portion 531 is formed in a flat cylindrical shape, and has a spline 534 on the inner side surface.
  • Each of the teeth 534a of the spline 534 is formed at substantially equal intervals along the circumferential direction of the receiving body portion 531, and protrudes toward the inside of the receiving body portion 531.
  • the flange portion 532 is formed on the outer peripheral surface of the receiving body portion 531 and has an annular shape. In the flange portion 532, an insertion hole 535 through which the screw 550 passes is formed at a plurality of positions.
  • the pressing portion 533 protrudes from the receiving body portion 531 toward the rolling bearing 512 side and has an annular shape.
  • the clutch receiving plate 530 corresponds to the fixing portion of the present invention
  • the spline 534 corresponds to the first engaged portion of the present invention.
  • the clutch receiving plate 530 is fixed to the rear end portion of the bearing portion 510 by a screw 550.
  • the screw 550 passes through the insertion hole 535 and is fastened to the screw hole 514 formed at the rear end portion of the bearing portion 510.
  • a bearing-side cushioning member 540 is disposed on the inner circumferential side of the receiving body portion 531 in the clutch receiving plate 530. As shown in FIGS. 4, 5, and 7(c), the bearing-side cushioning member 540 has a flat cylindrical shape and is formed of an elastic material such as rubber.
  • the bearing side cushioning member 540 corresponds to the fixing portion side cushioning member of the present invention.
  • the bearing side cushioning member 540 has an annular flange portion 541.
  • the flange portion 541 is interposed between the rolling bearing 512 of the bearing portion 510 and the pressing portion 533 of the clutch receiving plate 530, and is pressed against the rolling bearing 512 side by the pressing portion 533. Thereby, the bearing side cushioning member 540 is fixed to the clutch receiving plate 530 side.
  • the flange portion 541 has an annular projection portion 541a on the outer peripheral edge, and by contacting the projection portion 541a with the outer circumferential surface of the pressing portion 533, the flange portion 541 is less likely to be separated from between the rolling bearing 512 and the pressing portion 533. Further, a spring receiving portion 560 is provided behind the rolling bearing 512 and inside the bearing side cushioning member 540.
  • the bearing unit 500 is fixed to the rear surface of the outer cylinder 20 by a fixing method such as screw fastening by fixing the flange portion 520.
  • a fixing method such as screw fastening by fixing the flange portion 520.
  • the clutch mechanism portion 600 includes a clutch body 610, a clutch spring 620, a clutch lever 630, a lever support portion 640, a clutch driving device 650, a relay bar 660, and a mounting plate 670.
  • the clutch spring 620, the clutch lever 630, the lever support portion 640, the clutch drive device 650, and the relay bar 660 constitute a movement mechanism portion DM that moves the clutch body 610.
  • the clutch body 610 is formed of the same reinforcing resin as the rotor 110, and has a substantially disk shape.
  • an annular spline 611 is formed on the outer peripheral surface.
  • Each of the teeth 611a of the spline 611 is formed at substantially equal intervals in the circumferential direction of the clutch body 610, and protrudes toward the outside of the clutch body 610.
  • the spline 611 corresponds to the first engaging portion of the present invention.
  • a flange portion 612 is formed on the outer circumferential surface of the clutch body 610 behind the spline 611.
  • an engaging portion 613 is formed.
  • the meshing portion 613 has an annular base surface 613a, and a plurality of meshing convex portions 613b projecting rearward are formed on the base surface 613a at substantially equal intervals in the circumferential direction.
  • the engaging convex portion 613b has substantially the same shape as the engaging concave portion 132b of the engaged portion 132.
  • the engaging portion 613 is formed with a concavo-convex shape along the circumferential direction by the base surface 613a and the engaging convex portion 613b.
  • a rotor-side cushioning member 680 is disposed inside the meshing portion 613 at the rear end portion of the clutch body 610.
  • the rotor-side cushioning member 680 is formed of an elastic material such as rubber and has an annular shape.
  • a claw portion 681 is formed at a plurality of positions on the depth direction side.
  • the rotor-side cushioning member 680 is inserted into the hole portion 614 formed at the rear end portion of the clutch body 610, and the distal end portion of the claw portion 681 is locked to the depth direction side of the hole portion 614 to be fixed to the clutch body 610.
  • the meshing portion 613 corresponds to the second meshing portion of the present invention
  • the rotor side cushioning member 680 corresponds to the rotating portion side cushioning member of the present invention.
  • a concave portion 615 having a truncated cone shape is formed inside the rotor side cushioning member 680. Further, in the center of the clutch body 610, a shaft hole 616 extending from the front end portion of the clutch body 610 to the recess portion 615 is formed. In the shaft hole 616, a spline 616a is formed. On the other hand, as shown in (d) of FIG.
  • a spline 441a corresponding to the spline 616a is formed in the carrier shaft 441, and when the carrier shaft 441 is inserted into the shaft hole 616, the spline 616a and the spline 441a are formed.
  • Engage Thereby, the clutch body 610 can be moved forward and backward with respect to the carrier shaft 441. A state in which it moves but cannot rotate in the circumferential direction.
  • an annular receiving groove 617 is formed outside the shaft hole 616, and a clutch spring 620 is housed in the receiving groove 617.
  • One end of the clutch spring 620 is received by the spring receiving portion 560, and the other end is received by the bottom surface of the receiving groove 617.
  • the clutch lever 630 is rotatably supported by a support shaft 641 provided on the lever support portion 640. At the upper end portion of the clutch lever 630, 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. Further, 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 is rotated 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 coincides with the center of the mounting shaft 632 of the clutch lever 630 in the front-rear direction.
  • the relay bar 660 extends in the up-down direction and connects the clutch lever 630 and the cam 652.
  • the upper end portion of the relay 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 relay 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 torque motor 651 is operated, and the cam 652 is rotated so that the cam shaft 653 is positioned at the lowest position.
  • the lower end portion of the clutch lever 630 is pulled downward by the relay bar 660.
  • the clutch lever 630 rotates 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 splines 611 of the clutch body 610 mesh with the splines 534 of the clutch receiving plate 530 in the circumferential direction.
  • the spline 611 of the clutch body 610 reaches a position where it engages with the spline 534.
  • the spring 661 of the relay bar 660 is in a state of natural length. Since the clutch body 610 does not move to a position closer to the front than the meshing position, when the cam shaft 653 is moved from the predetermined position to the lowest position, as shown in FIG. 2, the spring 661 is extended downward. In this case, since the clutch lever 630 is rotated forward by the spring 661, it is in the engaged position. The clutch body 610 is applied with a pressing force from the pressing portion 631. Thereby, the spline 611 and the spline 534 can be reliably engaged.
  • the carrier shaft 441 of the planetary gear mechanism 400 that is, the carrier 440 is fixed in a state in which it cannot be rotated.
  • the wing shaft 200 rotates at a rotational speed equal to the rotational speed of the rotor 110
  • the agitating body 24 coupled to the wing shaft 200 also rotates at a speed equal to the rotational speed of the rotor 110.
  • the sun gear 410 rotates as the wing shaft 200 rotates.
  • 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 as 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 internal gear 420 rotates in the same direction as the wing shaft 200 at a rotation speed slower than the wing shaft 200, and the drum 22 fixed to the drum shaft 300 rotates at a slower speed than the agitating body 24 with the agitating body 24 Rotate.
  • 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 positioned such that the cam shaft 653 is at the top by the operation of the torque motor 651.
  • the way to rotate When the cam 652 is rotated and the cam shaft 653 is moved upward, first, the spring 661 is contracted. When the spring 661 returns to the natural length, then, as the cam shaft 653 moves, the relay bar 660 moves upward, and the lower end portion of the clutch lever 630 is pushed by the relay bar 660 to move upward.
  • the clutch lever 630 rotates rearward about the support shaft 641, and the pressing portion 631 is disengaged 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 meshing portion 613 of the clutch body 610 meshes with the engaged portion 132 of the clutch receiving portion 130 in the circumferential direction.
  • the clutch body 610 When the engaging portion 613 is engaged with the engaged portion 132, the clutch body 610 is in a state of being rotatable together with the rotor 110. In such a state, when the rotor 110 rotates, the wing shaft 200 and the clutch body 610 rotate at a rotational speed equal to the rotational speed of the rotor 110. At this time, with respect to the planetary gear mechanism 400, the sun gear 410 and the carrier 440 rotate at a rotation speed equal to that of the rotor 110. Thereby, the internal gear 420 rotates at the same rotational speed as the sun gear 410 and the carrier 440, and the drum shaft 300 fixed to the internal gear 420 rotates at the same rotational speed as the rotor 110. That is, in the drive unit 30, the wing shaft 200, the planetary gear mechanism 400, and the drum shaft 300 rotate integrally. Thereby, the drum 22 rotates integrally with the stirring body 24.
  • FIG. 9 (a) of FIG. 9 is a state transition diagram showing a state in which the spline 611 of the clutch body 610 is engaged with the spline 534 of the clutch receiving plate 530 when switching from the single-shaft drive mode to the two-shaft drive mode
  • FIG. 9(b) It is a state transition diagram showing a state in which the meshing portion 613 of the clutch body 610 is engaged with the engaged portion 132 of the clutch receiving portion 130 when the biaxial drive mode is switched to the single-shaft drive mode.
  • the teeth 611a of the splines 611, 534 may be generated.
  • the case where 534a does not mesh with each other and collides with each other.
  • the clutch body 610 is continuously pressed by the clutch lever 630 toward the clutch receiving plate 530 side. Further, in this state, as the rotor 110 rotates, the internal gear 420 that is subjected to a large load is not rotated due to the rotation with the drum 22, and the carrier 440 that receives the small load rotates, and the clutch body 610 passes through the planet.
  • the shaft 441 is rotated.
  • the meshing convex portion of the engaging portion 613 may also occur.
  • the portion 613b does not mesh with the engaging concave portion 132b of the engaged portion 132, and the engaging convex portion 613b collides with the surface 132a of the engaged portion 132.
  • the clutch body 610 is continuously pressed by the clutch spring 620 toward the clutch receiving portion 130 side.
  • the rotor 110, the clutch receiving plate 530, and the clutch body 610 are all formed of a reinforced resin. Therefore, in the case where the bearing side cushioning member 540 and the rotor side cushioning member 680 which are harder than the ordinary resin are not provided, the clutch body 610 side and the clutch receiving plate 530 side, and the clutch body 610 side and the clutch receiving portion 130 side The impact between the sounds is especially easy to get bigger.
  • FIG. 10 is a block diagram showing the configuration of the drum washing machine 1.
  • the drum 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 a door.
  • Locking device 709 is 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 a door.
  • Locking device 709 Locking device 709.
  • the operation unit 703 includes a power button 703a, a start button 703b, and a mode selection button 703c.
  • the power button 703a is a button for turning on and off the power of the drum 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 mode from among a plurality of operation modes of 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 cylinder 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 so that the drive motor 100 rotates at the rotational speed set by the control unit 701.
  • PWM control is used as motor drive control.
  • the control unit 701 applies a pulse voltage of a duty ratio determined based on the detected rotation speed to the drive motor 100, thereby supplying a drive current corresponding to the pulse voltage to the drive motor 100.
  • the water supply driving unit 706 supplies a driving current to the water supply 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 detects that the driving form of the driving unit 30 has been switched to the two-axis driving mode, and outputs a detection signal to the control unit 701.
  • the second detecting sensor 655 detects that the driving form of the driving unit 30 has been switched to the single-axis driving mode, and outputs a detection signal to the control unit 701.
  • Clutch drive unit 708 The drive current is supplied to the torque motor 651 based on the control signal output from the control unit 701 based on the detection signals of the first detection sensor 654 and the second detection sensor 655.
  • the door lock device 709 locks and unlocks the door 12 based on a control signal from the control unit 701.
  • the storage unit 702 includes an EEPROM, a RAM, and the like.
  • the storage unit 702 stores a program for executing a washing operation of various washing operation modes. Further, the storage unit 702 stores various parameters and various control flags for executing these programs.
  • the control unit 701 drives 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, etc. are controlled.
  • the drum washing machine 1 performs a washing operation in various operation modes in accordance with a selection operation performed by the user via the mode selection button 703c.
  • the washing operation sequentially performs a washing process, an intermediate dehydration process, a rinsing process, and a final dehydration process. It should be noted that depending on the operation mode, sometimes more than two intermediate dehydration processes and rinsing processes are performed.
  • the driving form of the driving unit 30 is switched to the biaxial driving mode.
  • the water in the outer cylinder 20 is stored in the outer cylinder 20 so as not to be in a predetermined water level at the lower edge of the inlet port 11 in such a manner that the laundry in the drum 22 is immersed in water.
  • the drive motor 100 alternately performs forward rotation and reverse rotation.
  • the drum 22 and the agitating body 24 alternately perform forward rotation and reverse rotation in a state in which the rotation speed of the agitating body 24 is faster than the rotation 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 protrusion 23 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 or agitated by the blade 24a. Thereby, the laundry is washed or rinsed.
  • the drive form of the drive unit 30 is switched to the uniaxial drive mode.
  • the drive motor 100 that is, the drum 22 and the agitating body 24 are integrally rotated by the centrifugal force acting on the laundry in the drum 22 to be much larger than the rotational speed of gravity.
  • the laundry is pressed against the inner peripheral surface of the drum 22 by the action of centrifugal force to be dehydrated.
  • the drum washing machine 1 of the present embodiment after the washing and rinsing are completed, after the control unit 701 stops the drive motor 100 and stops the drum 22, the drive mode of the drive unit 30 is switched from the biaxial drive mode to the uniaxial drive mode. . Further, when the intermediate dehydration is completed, after the control unit 701 stops the drive motor 100 and stops the drum 22, the drive mode of the drive unit 30 is switched from the uniaxial drive mode to the biaxial drive mode.
  • FIG. 11 is a schematic view showing a state in which the laundry in the drum 22 is biased to the left side as viewed from the front side
  • (b) of FIG. 11 is a view showing that the laundry in the drum 22 is offset from the front side to the right. Schematic diagram of the situation on the side.
  • the driving mode is the two-shaft driving mode
  • the 534a is meshed in a state of being strongly pressed to one side, and the frictional resistance between the pressed surfaces of the teeth 611a and 534a is increased.
  • the engaging convex portion 613b of the engaging portion 613 of the clutch body 610 and the engaged portion of the clutch receiving portion 130 are similarly engaged.
  • the engagement concave portion 132b of the 132 is engaged in a state of being strongly pressed toward one side, and the frictional resistance between the engagement convex portion 613b and the pressed surface of the engagement concave portion 132b is increased.
  • the drive driving control of the clutch drive device 650 and the drive motor 100 for smoothly switching the drive mode of the drive unit 30 is executed by the control unit 701.
  • FIG. 12 is a timing chart for energizing the torque motor 651 and the drive motor 100 of the clutch drive device 650 when the drive mode of the drive unit 30 is switched.
  • the control unit 701 When switching from the single-axis drive mode to the two-axis drive mode and when switching from the two-axis drive mode to the single-axis drive mode, the control unit 701 energizes the drive motor 100 to the right as shown in FIG. After the rotor 110 is rotated in the clockwise direction, the drive motor 100 is powered off. Then, the control unit 701 immediately energizes the drive motor 100 to rotate leftward without inserting the power-off period, and rotates the rotor 110 in the counterclockwise direction, thereby de-energizing the drive motor 100.
  • control unit 701 immediately energizes the drive motor 100 to rotate rightward without inserting the power-off period, and rotates the rotor 110 in the clockwise direction, thereby de-energizing the drive motor 100. Then, the control unit 701 energizes the drive motor 100 to rotate leftward without rotating the power-off period, and rotates the rotor 110 in the counterclockwise direction, thereby de-energizing the drive motor 100. Finally, the control unit 701 immediately energizes the drive motor 100 to rotate right when the power-off period is not inserted, and then, in order to perform the washing, rinsing, dehydration, and the like after switching the drive mode, the drive motor 100 is continuously energized to continuously make the rotor 110 continuous. Rotate.
  • the control unit 701 operates the torque motor 651 while the drive motor 100 is energized and de-energized as described above. In other words, as shown in FIG. 12, the control unit 701 energizes the torque motor 651 until the drive motor 100 is powered off after first energizing the drive motor 100 to the right. After that, the control unit 701 turns off the torque motor 651 based on the detection of the first detecting sensor 654 when switching from the single-axis driving mode to the two-axis driving mode, and switches from the biaxial driving mode to the single-axis driving mode. The detection of a detecting sensor 654 de-energizes the torque motor 651, but in either case, the power-off of the torque motor 651 is performed after the last driving motor 100 is energized in a right-handed manner.
  • the reverse rotation operation 1 is a motion reversing operation 2 for stopping the rotor 110 rotating in the clockwise direction, and then rotating the rotor 110 counterclockwise. 110 stops and then immediately rotates the rotor 110 in a clockwise direction.
  • the laundry is biased to the left side in the drum 22 when the drum 22 is stopped.
  • the drum 22 rotates in a clockwise direction opposite to the direction of the force acting on the offset laundry.
  • the drive motor 100 is stopped, since the drum 22 is acted upon by the inertial force that continues to move in the clockwise direction, the force applied by the offset laundry is offset by the inertial force and becomes small.
  • the force of pressing the teeth 611a of the spline 611 of the clutch body 610 and the teeth 534a of the spline 534 of the clutch receiving plate 530 to one side is weakened. Therefore, the teeth 611a of the spline 611 become easily separated from the teeth 534a of the spline 534.
  • the single-axis drive mode is switched to the two-axis drive mode
  • the engagement convex portion 613b of the meshing portion 613 of the clutch body 610 and the engagement concave portion 132b of the engaged portion 132 of the clutch receiving portion 130 are pressed to one side. The force is weakened, so that the engaging convex portion 613b of the engaging portion 613 is easily separated from the engaging concave portion 132b of the engaged portion 132.
  • the spline 611 and the engaged portion 132 are pressed toward the side of the tooth 611a and the tooth 534a, the engaging convex portion 613b, and the engaging concave portion 132b.
  • the force is weakened in the direction of rotation, so that the spline 611 and the spline 534, the engaging portion 613 and the engaged portion 132 are more difficult to disengage.
  • the teeth 611a, 534a of the splines 611, 534 do not mesh with each other.
  • the rotation of the drive motor 100 causes the teeth 611a, 534a to be displaced from each other to cause the clutch body 610 to suddenly move to the clutch receiving plate 530 side, so that the teeth 611a, 534a are engaged with each other, at this time.
  • the bearing-side cushioning member 540 disposed on the clutch receiving plate 530 side first touches the front end portion of the clutch body 610, the pair of clutch bodies 610 The impact force on the side of the clutch receiving plate 530 can also be weakened by the bearing side cushioning member 540. Thereby, the impact sound generated between the clutch body 610 side and the clutch receiving plate 530 side can be reduced.
  • the bearing-side cushioning member 540 is sandwiched by the bearing portion 510 and the clutch receiving plate 530 by the flange portion 541, and is fixed to the clutch receiving plate 530 side. Therefore, the bearing side cushioning member 540 can be easily fixed to the clutch receiving plate 530 side without using a screw or the like.
  • the engaging convex portion 613b and the engaging concave portion 132b are not engaged to engage the convex portion 613b and the engaged portion 132.
  • the surface 132a collides, and thereafter the rotation of the drive motor 100 causes the engagement projection 613b to coincide with the position of the engagement recess 132b, the clutch body 610 suddenly moves to the clutch receiving portion 130 side and the engagement projection 613b engages with the engagement recess 132b.
  • the impact force on the clutch receiving portion 130 side of the clutch body 610 can also be It is weakened by the rotor side cushioning member 680. Thereby, the impact sound generated between the clutch body 610 side and the clutch receiving portion 130 side can be reduced.
  • the rotor-side cushioning member 680 is fixed to the clutch body 610 side by locking the claw portion 681 to the hole portion 614 formed in the clutch body 610. Therefore, the rotor-side cushioning member 680 can be easily fixed to the clutch body 610 side without using a screw or the like.
  • the rotor 110 of the driving motor 100 is clockwise and counterclockwise.
  • the clutch body 610 is moved by the moving mechanism portion DM, the rotation of the rotor 110 in the clockwise direction and the operation of stopping the rotor 110 rotating in the counterclockwise direction are performed.
  • the meshing portion 613 of the clutch body 610 and the clutch receiving portion are switched when the single-shaft driving mode is switched to the two-axis driving mode.
  • the engaged portion 132 of the 130 is also easily disengaged, and when switching from the biaxial drive mode to the single-shaft drive mode, the splines 611 of the clutch body 610 and the splines 534 of the clutch receiving plate 530 are also easily disengaged. Therefore, according to the present embodiment, the switching of the driving form between the uniaxial driving mode and the biaxial driving mode can be smoothly performed.
  • the load applied to the torque motor 651 may increase. According to the embodiment, it is possible to prevent application to the torque electric power The load of the machine 651 is increased.
  • the rotor 110 of the drive motor 100 is stopped in a state of being rotated in one direction
  • the rotor 110 is rotated in the opposite direction without interposing the stop period, so that the splines 611 and the splines can be further weakened.
  • the teeth 611a and 534a of the 534, the engaging convex portion 613b of the engaging portion 613, and the engaging concave portion 132b of the engaged portion 132 press the force to one side, and the spline 611 and the spline 534, the engaging portion 613, and the engaged portion 132 become Easier to disengage.
  • the torque motor 651 starts to operate, that is, the movement of the clutch body 610 of the moving mechanism portion DM starts, and therefore, the clutch body
  • the operation of stopping the rotor 110 rotating in the clockwise direction is promptly performed, and the spline 611, the spline 534, the engaging portion 613, and the engaged portion 132 can be easily disengaged.
  • the bearing side cushioning member 540 is disposed on the clutch receiving plate 530 side.
  • the bearing side cushioning member 690 may be disposed on the clutch body 610 side instead of the bearing side cushioning member 540.
  • FIG. 13 is a cross-sectional view of an enlarged main portion of the vicinity of the clutch body 610 according to the modification.
  • (a) and (b) of FIG. 14 are a front view and a side cross-sectional view of the bearing-side cushioning member 690 according to a modification, respectively.
  • the bearing side cushioning member 690 is formed in an annular shape by an elastic member such as rubber. In the bearing side cushioning member 690, an annular groove portion 691 is formed at the center. The bearing side cushioning member 690 is fixed to the clutch body 610 by fitting the groove portion 691 into the flange portion 612 of the clutch body 610.
  • the rotor side cushioning member 680 is disposed on the clutch body 610 side.
  • the rotor side cushioning member 140 may be disposed on the clutch receiving portion 130 side instead of the rotor side cushioning member 680.
  • FIG. 15 is a front view of the rotor 110 of the drive motor 100 according to the modification.
  • the rotor-side cushioning member 140 is formed in an annular shape by an elastic member such as rubber, and is fixed by a fixing method such as a contact surface 133 attached to the clutch receiving portion 130.
  • a fixing method such as a contact surface 133 attached to the clutch receiving portion 130.
  • the control unit 701 may energize the torque motor 651 almost simultaneously while energizing the drive motor 100 to the right. That is, it is also possible to initially make the rotor 110 of the drive motor 100 start clockwise At the same time as the direction rotation, the movement of the clutch body 610 is started by the movement mechanism portion DM.
  • the rotor 110 of the drive motor 100 is stopped in a state of being rotated in one direction, the rotor 110 is immediately rotated in the opposite direction without interposing the stop period.
  • the rotor 110 may be rotated in the opposite direction while the insertion of the rotor 110 is stopped.
  • the rotor 110 of the drive motor 100 is first rotated in the clockwise direction, but the rotor 110 may be first rotated in the counterclockwise direction.
  • the drum shaft 300 is fixed to the internal gear 420, and the clutch body 610 is coupled to the carrier shaft 441, that is, the carrier 440.
  • the planetary gear 430 rotates with the rotation of the sun gear 410, and the internal gear 420 is compared with the sun gear 410.
  • the drum shaft 300 may be fixed to the carrier 440.
  • the inner gear 420 is attached with the shaft portion 421 whose tip end portion protrudes rearward from the drum shaft 300.
  • the clutch body 610 is coupled to the shaft portion 421.
  • the clutch body 610 is coupled to the internal gear 420 via the shaft portion 421. 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 carrier 440 is compared with the sun gear 410. Slow rotation speed rotation. Thereby, the drum shaft 300 fixed to the carrier 440 rotates.
  • the rotor 110 of the drive motor 100 is directly coupled to the agitating body 24 via the blade shaft 200, and the agitating body 24 is rotated at a rotational speed equal to the rotational speed of the drive motor 100.
  • a speed reduction mechanism using a gear may be interposed between the agitating body 24 and the drive motor 100 in the same manner as the drum 22.
  • the agitating body 24 can be rotated faster than the drum 22 by the reduction ratio of the speed reduction mechanism used for the agitating body 24 being smaller than the reduction ratio of the planetary gear mechanism 400.
  • the drum 22 is rotated about the tilt axis that is inclined with respect to the horizontal direction.
  • the drum washing machine 1 may be configured such that the drum 22 rotates around the horizontal axis.
  • drum washing machine 1 of the above embodiment does not have a drying function
  • the present invention can also be applied to a drum washing machine having a drying function, that is, a drum washing and drying machine.
  • drive unit drive unit
  • a rotor side cushioning member (rotating portion side cushioning member);
  • roller shaft (second rotating shaft);
  • bearing side cushioning member fixing portion side cushioning member
  • a rotor side cushioning member (rotating portion side cushioning member);
  • bearing side cushioning member fixing portion side cushioning member

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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

本发明使在滚筒的后部具备旋转体的滚筒洗衣机在第一形态与第二形态之间切换驱动形态时产生的声音降低，其中，第一形态是滚筒与旋转体独立旋转的驱动形态，第二形态是滚筒与旋转体一体旋转的驱动形态。在离合器承接板(530)侧，配置有轴承侧缓冲构件(540)，该轴承侧缓冲构件(540)会在离合器体(610)的花键(611)与离合器承接板(530)的花键(534)啮合时最先触碰到对象侧，而减弱离合器体(610)与离合器承接板(611)之间产生的撞击力。进而，在离合器体(610)侧，配置有转子侧缓冲构件(680)，该转子侧缓冲构件(680)会在离合器体(610)的啮合部(613)与离合器承接部(130)的被啮合部(132)啮合时最先触碰到对象侧，而减弱离合器体(610)与离合器承接部(130)之间产生撞击力。

Description

滚筒洗衣机 技术领域
本发明涉及一种滚筒洗衣机。该滚筒洗衣机既可以连续地进行从洗衣到干衣的运转，也可以只进行洗衣而不进行干衣。
背景技术
以往，滚筒洗衣机通过使横轴型的滚筒在底部蓄有水的外筒内旋转，并由设置在滚筒内的提升突起部(baffle)将洗涤物举起落下，将洗涤物摔到滚筒的内周面来洗涤洗涤物。在像这样通过提升突起部来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，对于滚筒洗衣机而言，为了提高清洗性能，可以采用下述结构：在滚筒的后表面设置搅拌体，在进行洗涤、漂洗时，使滚筒与搅拌体以不同的旋转速度独立旋转(参照专利文献1)。
该滚筒洗衣机在脱水时，滚筒与搅拌体以相同的旋转速度一体旋转。因此，设置有在滚筒与搅拌体独立旋转的第一形态、和滚筒与搅拌体一体旋转的第二形态之间切换驱动形态的离合器机构部。
滚筒和搅拌体由驱动电机旋转驱动。滚筒的旋转轴与行星齿轮机构的行星架连结，驱动电机的旋转经由行星齿轮机构传递给滚筒。离合器机构部包括离合器体和移动机构部。离合器体以相对于该内齿轮不能旋转的方式与构成行星齿轮机构的内齿轮连结。移动机构部使离合器体在驱动电机侧、和自由旋转地支承滚筒的旋转轴的轴承单元侧之间移动。在离合器体，在转子侧的端部和轴承单元侧的端部，沿着周向形成有花键，在转子以及轴承单元，形成有与离合器体侧的花键对应的花键。
在第一形态下，离合器体的花键与轴承单元的花键啮合。由此，内齿轮以无法进行周向旋转的方式，经由离合器体固定于轴承单元。当转子在该状态下旋转时，滚筒按照行星齿轮机构的减速比，以比搅拌体慢的旋转速度与搅拌体独立旋转。另一方面，在第二形态下，离合器体的花键与转子的花键啮合。由此，内齿轮经由离合器体固定于转子。当转子在该状态下旋转时，滚筒以与搅 拌体相同的旋转速度与搅拌体一体旋转。
上述的滚筒洗衣机有可能会发生如下情况：在离合器体通过移动机构部移动至轴承单元侧时，花键的齿彼此互不啮合而对撞。在该状态下，离合器体被移动机构部持续推压向轴承单元侧。在该状态下，当离合器体随着转子的旋转而经由内齿轮进行旋转，离合器体的花键的齿的位置错开至不受轴承单元的花键的齿影响的位置时，离合器体猛然移动到轴承单元侧，花键的齿彼此啮合。但是，此时有可能会在离合器体与轴承单元之间产生对于用户而言刺耳的撞击声。
同样，在离合器体通过移动机构部移动至转子侧时，也有可能会发生花键的齿彼此互不啮合而对撞的情况。在该状态下，离合器体被移动机构部持续推压向转子侧。在该状态下，当转子的花键的齿的位置随着转子的旋转而错开至不受离合器体的花键的齿影响的位置时，离合器体猛然移动到转子侧，花键的齿彼此啮合。但是，此时有可能会在离合器体与转子之间产生对于用户而言刺耳的撞击声。
现有技术文献
专利文献
专利文献1：日本特开2015-167663号公报
发明内容
发明所要解决的问题
本发明是鉴于该问题而完成的发明，其目的在于，对于在滚筒的后部具备旋转体的滚筒洗衣机而言，能降低在滚筒与旋转体独立旋转的第一形态、和滚筒与旋转体一体旋转的第二形态之间切换驱动形态时产生的声音。
用于解决问题的方案
本发明的第一方式的滚筒洗衣机具备：外筒，配置在机壳内；滚筒，配置在所述外筒内，并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，且表面具有与洗涤物接触的突状部；以及驱 动部，使所述滚筒和所述旋转体旋转。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，与所述第一旋转轴同轴设置，将所述驱动电机的旋转传递给所述滚筒；行星齿轮机构，具有随着所述驱动电机的旋转而旋转的太阳轮、包围该太阳轮的环状的内齿轮、夹在所述太阳轮与所述内齿轮之间的多个行星轮、以及自由旋转地保持这些行星轮的行星架，所述行星架和所述内齿轮当中的一方被固定于所述第二旋转轴；以及离合器机构部，在第一形态和第二形态之间切换基于所述驱动部的驱动形态，其中，所述第一形态是指使所述第一旋转轴与所述第二旋转轴独立旋转的驱动形态，所述第二形态是指使所述第一旋转轴与所述第二旋转轴一体旋转的驱动形态。所述离合器机构部包括：离合器体，以能与所述行星架和所述内齿轮当中的另一方一起旋转且能向所述第二旋转轴的轴线方向移动的状态被连结于该另一方；以及移动机构部，在向所述第一形态切换时使所述离合器体移动至第一位置，并在向所述第二形态切换时使所述离合器体移动至第二位置。在所述离合器体中形成有具有凹凸形状的第一啮合部和具有凹凸形状的第二啮合部，在不与所述驱动电机一起旋转的固定部中形成有第一被啮合部，该第一被啮合部具有与所述第一啮合部的凹凸形状相对应的凹凸形状，并在所述离合器体移动至所述第一位置时与所述第一啮合部沿着周向啮合，在与所述驱动电机一起旋转的旋转部中形成有第二被啮合部，该第二被啮合部具有与所述第二啮合部的凹凸形状相对应的凹凸形状，并在所述离合器体移动至所述第二位置时与所述第二啮合部沿着周向啮合。在所述离合器体侧或所述固定部侧配置有固定部侧缓冲构件，固定部侧缓冲构件会在所述第一啮合部与所述第一被啮合部啮合时最先触碰到对象侧，而减弱所述离合器体与所述固定部之间产生的撞击力。
当离合器体移动至第一位置，第一啮合部与第一被啮合部沿着周向啮合时，与离合器体连结的另一方，例如行星架成为不旋转的状态，驱动形态被切换至第一形态。当驱动电机进行旋转时，一方、例如与内齿轮连结的第二旋转轴以按照行星齿轮机构的减速比的、与第一旋转轴的旋转速度不同的旋转速度进行旋转。由此，滚筒与旋转体以不同的旋转速度独立旋转。
另一方面，当离合器体移动至第二位置，第二啮合部与第二被啮合部沿着周向啮合时，与离合器体连结的另一方成为与驱动电机一起旋转的状态，驱动 形态被切换至第二形态。当驱动电机进行旋转时，第二旋转轴以与第一旋转轴的旋转速度相同的旋转速度进行旋转。由此，滚筒与旋转体以相同的旋转速度一体旋转。
根据上述的结构，由于在第一啮合部与第一被啮合部啮合时，配置在离合器体侧或固定部侧的固定部侧缓冲构件会最先触碰到对象侧，从而减弱离合器体与固定部之间产生的撞击力，因此能降低离合器体侧与固定部侧之间产生的撞击声。
在本方式的滚筒洗衣机中，所述驱动部还可以包括自由旋转地支承所述第二旋转轴的轴承部。在这种情况下，所述固定部安装于所述轴承部。所述固定部侧缓冲构件配置在所述固定部侧，并具有由所述固定部和所述轴承部夹住的凸缘部。
根据上述的结构，固定部侧缓冲构件通过其凸缘部被轴承部和固定部夹住从而固定于固定部侧。因此，能容易地将固定部侧缓冲构件固定在固定部侧。
在本方式的滚筒洗衣机中，可以在所述离合器体侧或所述旋转部侧配置旋转部侧缓冲构件，旋转部侧缓冲构件会在所述第二啮合部与所述第二被啮合部啮合时最先触碰到对象侧，减弱所述离合器体与所述旋转部之间产生的撞击力。
根据上述的结构，由于在第二啮合部与第二被啮合部啮合时，配置在离合器体侧或旋转部侧的旋转部侧缓冲构件会最先触碰到对象侧，减弱离合器体与旋转部之间产生的撞击力，因此能降低在离合器体侧与旋转部侧之间产生的撞击声。
本发明的第二方式的滚筒洗衣机具备：外筒，配置在机壳内；滚筒，配置在所述外筒内，并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，且表面具有与洗涤物接触的突状部；以及驱动部，使所述滚筒和所述旋转体旋转。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，与所述第一旋转轴同轴设置，将所述驱动电机的旋转传递给所述滚筒；行星齿轮机构，具有随着所述驱动电机的旋转而旋转的太阳轮、包围该太阳轮的环状的内齿轮、夹在所述太阳轮与所述内齿轮之间的多个行星轮；以及自由旋转地保持这些行星轮的行星架，所述行星架和所述内齿轮当中的一方被固定于所述第二旋转轴；以及离合器机构部，在第一形态和第二形态之间切换基于所述驱动部的驱动形 态，其中，所述第一形态是指使所述第一旋转轴与所述第二旋转轴独立旋转的驱动形态，所述第二形态是指使所述第一旋转轴与所述第二旋转轴一体旋转的驱动形态。所述离合器机构部包括：离合器体，以能与所述行星架和所述内齿轮当中的另一方一起旋转且能向所述第二旋转轴的轴线方向移动的状态被连结于该另一方；以及移动机构部，在向所述第一形态切换时使所述离合器体移动至第一位置，在向所述第二形态切换时使所述离合器体移动至第二位置。在所述离合器体中形成有具有凹凸形状的第一啮合部和具有凹凸形状的第二啮合部，在不与所述驱动电机一起旋转的固定部中形成有第一被啮合部，该第一被啮合部具有与所述第一啮合部的凹凸形状相对应的凹凸形状，并在所述离合器体移动至所述第一位置时与所述第一啮合部沿着周向啮合，在与所述驱动电机一起旋转的旋转部中形成有第二被啮合部，该第二被啮合部具有与所述第二啮合部的凹凸形状相对应的凹凸形状，并在所述离合器体移动至所述第二位置时与所述第二啮合部沿着周向啮合。在所述离合器体侧或所述旋转部侧，配置有旋转部侧缓冲构件，旋转部侧缓冲构件会在所述第二啮合部与所述第二被啮合部啮合时最先触碰到对象侧，而减弱所述离合器体与所述旋转部之间产生的撞击力。
根据上述的结构，与第一方式的滚筒洗衣机同样能降低在离合器体侧与旋转部侧之间产生的撞击声。
第一方式或第二方式的滚筒洗衣机可以采用如下结构：所述旋转部侧缓冲构件配置于所述离合器体侧，并具有爪部，所述离合器体具有孔部，供所述爪部插入并卡定。
根据上述的结构，旋转部侧缓冲构件通过使其爪部卡定于离合器体的孔部，从而固定于离合器体侧。因此，能将旋转部侧缓冲构件容易地固定于离合器体侧。
发明效果
根据本发明，能降低在滚筒与旋转体独立旋转的第一形态、和滚筒与旋转体一体旋转的第二形态之间切换驱动形态时产生的声音。
本发明的效果以及意义由如下所示的实施方式的说明来进一步明确。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的任何限制。
附图说明
图1是表示实施方式所涉及的滚筒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是将实施方式所涉及的离合器体的周边放大后的主要部分的剖视图。
图5是将实施方式所涉及的离合器体的周边放大后的主要部分的剖视图。
图6是实施方式所涉及的驱动电机的转子的主视图。
图7的(a)和(b)分别是实施方式所涉及的离合器承接板的主视图和后视图，图7的(c)是轴承侧缓冲构件的主视图。
图8的(a)至(c)分别是实施方式所涉及的离合器体的主视图、侧面纵剖视图以及后视图。图8的(d)是实施方式所涉及的行星架轴的剖视图。
图9的(a)是表示实施方式所涉及的、从单轴驱动形态切换至双轴驱动形态时离合器体的花键与离合器承接板的花键啮合的样子的状态转换图，图9的(b)是表示实施方式所涉及的、从双轴驱动形态切换至单轴驱动形态时离合器体的啮合部与离合器承接部的被啮合部啮合的样子的状态转换图。
图10是表示实施方式所涉及的滚筒洗衣机的结构的框图。
图11的(a)是表示实施方式所涉及的、滚筒内的洗涤物从正面侧观察偏置于左侧的情况的示意图，图11的(b)是表示实施方式所涉及的、滚筒内的洗涤物从正面侧观察偏置于右侧的情况的示意图。
图12是实施方式所涉及的、对驱动单元的驱动形态进行切换时对离合器驱动装置的转矩电机和驱动电机的通电动作的正时图。
图13是将变更例所涉及的离合器体的周边放大后的主要部分的剖视图。
图14的(a)和(b)分别是变更例所涉及的轴承侧缓冲构件的主视图和侧面剖视图。
图15是变更例所涉及的驱动电机的转子的主视图。
图16是变更例所涉及的、对驱动单元的驱动形态进行切换时对离合器驱动装置的转矩电机和驱动电机的通电动作的正时图。
图17是表示变更例所涉及的驱动单元的结构的剖视图。
具体实施方式
以下，参照附图，对本发明的滚筒洗衣机的一实施方式的不具有干衣功能的滚筒洗衣机进行说明。
图1是表示滚筒洗衣机1的结构的侧面剖视图。
滚筒洗衣机1具备构成外观的机壳10。机壳10的前表面10a从中央部倾斜到上部，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。
在机壳10内，外筒20由多个减振器21弹性支承。滚筒22自由旋转地配置于外筒20内。外筒20和滚筒22以后表面侧相对于水平方向放低的方式倾斜。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。外筒20和滚筒22的倾斜角度可以设为10～20度左右。外筒20的前表面的开口部20a和滚筒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，形成有许多个脱水孔22b。进而，在滚筒22的内周面，沿周向以大致相等的间隔设有三个提升突起部23。
搅拌体24自由旋转地配置于滚筒22的后部。搅拌体24具有大致圆盘形状。在搅拌体24的表面，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。
在外筒20的后方配置有产生驱动滚筒22和搅拌体24的转矩的驱动单元30。驱动单元30相当于本发明的驱动部。驱动单元30在洗涤过程以及漂洗过程时，使滚筒22和搅拌体24以不同的旋转速度往同一方向旋转。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变得比重力小的旋转速度进行旋转，并使搅拌体24以比滚筒22的旋转速度快的旋转速度进行旋转。另一方面，驱动单元30在脱水过程时，使滚筒22和搅拌体24以施加给滚筒22内的洗涤物的离心力变得远远大于重力的旋转速度一体旋转。驱动单元30的详细的结构在后面进行说明。
在外筒20的底部形成有排水口部20b。在排水口部20b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，蓄于外筒20内的水就会通过排水软管41向机外排出。
在机壳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以从前方自由抽出的方式收容于洗涤剂盒50。洗涤剂盒50通过给水软管52与配置在机壳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与外筒20的上部连接。当给水阀51打开时，来自水龙头的自来水通过给水软管52、洗涤剂盒50以及注水管53被供给至外筒20内。此时，收容于洗涤剂容器50a的洗涤剂顺着水流被供给至外筒20内。
接着，对驱动单元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4以及图5是将离合器体610的周边放大后的主要部分的剖视图。图2以及图4表示驱动单元30的驱动形态切换至双轴驱动形态的状态，图3以及图5表示驱动单元30的驱动形态切换至单轴驱动形态的状态。图6是驱动电机100的转子110的主视图。图7的(a)和(b)分别是离合器承接板530的主视图和后视图，图7的(c)是轴承侧缓冲构件540的主视图。图8的(a)至(c)分别是离合器体610的主视图、侧面纵剖视图以及后视图。图8的(d)是行星架轴441的剖视图。需要说明的是，在图4以及图5中，省略了离合器杆630的图示。
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的转矩。翼轴200通过驱动电机100的转矩进行旋转，并将该旋转传递给搅拌体24。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。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在双轴驱动形态和单轴驱动形态之间切换驱动单元30的驱动形态，其中，所述双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400减速后的旋转速度进行旋转的驱动形态；所述单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旋转的驱动形态。翼轴200相当于本发明的第一旋转轴，滚筒轴300相当于本发明的第二旋转轴。双轴驱动形态相当于本发明的第一形态，单轴驱动形态相当于本发明的 第二形态。
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通过在树脂中混入有玻璃等强化材料而成的强化树脂，形成为有底的圆筒状，在其内周面遍及整个圆周排列有永磁铁111。如图4、图5以及图6所示，在转子110的中央部，离合器承接部130与转子110一体地形成。离合器承接部130与驱动电机100即转子110一起旋转。
离合器承接部130包括凸台部131、被啮合部132、以及触碰面133。对于凸台部131而言，其剖面具有大致梯形形状，并在其中央部形成有供翼轴200穿过的凸台孔131a。凸台孔131a与形成于转子110的后表面中央部的凹部112连通。被啮合部132形成于凸台部131的外周，并具有大致圆环状。在被啮合部132，沿着周向大致等间隔地形成有多个比被啮合部132的表面132a更向深度方向侧凹陷的啮合凹部132b。这样，被啮合部132通过表面132a和啮合凹部132b，沿着周向形成有凹凸形状。触碰面133设置于凸台部131与被啮合部132之间，并形成有比被啮合部132的表面132a突出一截的平坦面。离合器承接部130相当于本发明的旋转部，被啮合部132相当于本发明的第二被啮合部。
定子120在外周部具有线圈121。当从后述的电机驱动部对定子120的线圈121供给驱动电流时，转子110旋转。
滚筒轴300具有中空形状，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：太阳轮410、包围太阳轮410的环状的内齿轮420、介于太阳轮410与内齿轮420之间的多组行星轮430、以及自由旋转地保持这些行星轮430的行星架440。
太阳轮410被固定于翼轴200，随着驱动电机100的旋转而旋转。内齿轮420被固定于滚筒轴300。一组行星轮430包括相互啮合且反向旋转的第一齿轮和第二齿轮。行星架440包括向后方延伸的行星架轴441。行星架轴441与滚筒轴300同轴，内部形成为中空以供翼轴200插入。
翼轴200的后端部从行星架轴441向后方突出，通过安装螺栓210被固定于转子110的凸台孔131a。安装螺栓210的头部收容于转子110的凹部112， 不比转子110更向后方突出。
在轴承单元500，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动轴承511、512，在前端部设有机械密封件513。滚筒轴300的外周面由滚动轴承511、512承接，在轴承部510内顺滑地旋转。另外，通过机械密封件513防止水进入轴承部510与滚筒轴300之间。
在轴承单元500，在轴承部510的周围形成有固定法兰部520。在固定法兰部520的下端部形成有安装凸台521。
在轴承部510的后端部，安装有离合器承接板530。如图4、图5、图7的(a)和(b)所示，离合器承接板530由与转子110相同的强化树脂形成，包括承接主体部531、法兰部532、以及推压部533。承接主体部531形成为扁平的圆筒状，并在内侧面具有花键534。花键534的各齿534a沿着承接主体部531的周向大致等间隔地形成，并向承接主体部531的内侧突出。法兰部532形成于承接主体部531的外周面，并具有圆环状。在法兰部532，在多个位置形成有供螺钉550穿过的插通孔535。推压部533从承接主体部531向滚动轴承512侧突出，并具有圆环状。离合器承接板530相当于本发明的固定部，花键534相当于本发明的第一被啮合部。
离合器承接板530通过螺钉550被固定于轴承部510的后端部。螺钉550穿过插通孔535，被紧固在形成于轴承部510的后端部的螺孔514。
在离合器承接板530，在承接主体部531的内周侧配置有轴承侧缓冲构件540。如图4、图5以及图7的(c)所示，轴承侧缓冲构件540具有扁平的圆筒状，由橡胶等弹性材料形成。轴承侧缓冲构件540相当于本发明的固定部侧缓冲构件。轴承侧缓冲构件540具有圆环状的凸缘部541。凸缘部541夹在轴承部510的滚动轴承512与离合器承接板530的推压部533之间，通过推压部533被压向滚动轴承512侧。由此，轴承侧缓冲构件540被固定于离合器承接板530侧。凸缘部541在外周缘具有环状的突起部541a，通过使该突起部541a与推压部533的外周面接触，从而凸缘部541不容易从滚动轴承512与推压部533之间脱离。进而，在滚动轴承512的后方，且在轴承侧缓冲构件540的内侧，设置有弹簧承接部560。
轴承单元500通过固定法兰部520，由螺钉紧固等固定方法固定在外筒20的后表面。在驱动单元30已安装于外筒20的状态下，翼轴200以及滚筒轴300进入外筒20的内部。滚筒22被固定于滚筒轴300，搅拌体24被固定于翼轴200。
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、中继棒660、以及安装板670。离合器弹簧620、离合器杆630、杆支承部640、离合器驱动装置650以及中继棒660构成使离合器体610移动的移动机构部DM。
如图4、图5以及图的8(a)至(c)所示，离合器体610由与转子110相同的强化树脂形成，具有大致圆盘形状。在离合器体610的前端部，在外周面形成有环状的花键611。花键611的各齿611a沿离合器体610的周向大致等间隔地形成，并朝向离合器体610的外侧突出。花键611相当于本发明的第一啮合部。另外，在离合器体610的外周面，在花键611的后方形成有凸缘部612。
在离合器体610的后端部，形成有啮合部613。啮合部613具有圆环状的基座面613a，基座面613a上沿着周向大致等间隔地形成有多个向后方突出的啮合凸部613b。啮合凸部613b具有与被啮合部132的啮合凹部132b大致相同的形状。这样，啮合部613通过基座面613a和啮合凸部613b，沿着周向形成有凹凸形状。进而，在离合器体610的后端部，在啮合部613的内侧，配置有转子侧缓冲构件680。转子侧缓冲构件680由橡胶等弹性材料形成，并具有圆环状。在转子侧缓冲构件680，在深度方向侧的多个位置形成有爪部681。转子侧缓冲构件680通过使爪部681插入形成于离合器体610的后端部的孔部614，使爪部681的顶端部卡定到孔部614的深度方向侧，从而固定于离合器体610。啮合部613相当于本发明的第二啮合部，转子侧缓冲构件680相当于本发明的旋转部侧缓冲构件。
在离合器体610，为了使离合器体610不与离合器承接部130的凸台部131接触，在转子侧缓冲构件680的内侧形成有截锥形状的凹部615。此外，在离合器体610的中央，形成有从离合器体610的前端部延伸到凹部615的轴孔616。在轴孔616，形成有花键616a。另一方面，如图8的(d)所示，在行星架轴441，形成有与花键616a对应的花键441a，当行星架轴441插入轴孔616时，花键616a与花键441a啮合。由此，离合器体610成为相对于行星架轴441能向前后方向 移动但无法向圆周方向转动的状态。
在离合器体610，在轴孔616的外侧形成有圆环状的收容槽617，在该收容槽617收容有离合器弹簧620。离合器弹簧620的一端由弹簧承接部560承接，另一端由收容槽617的底面承接。
离合器杆630由设置于杆支承部640的支轴641自由转动地支承。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，将凸缘部612向前方推的推压部631。此外，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包括转矩电机651和通过转矩电机651的转矩绕水平轴旋转的圆盘状的凸轮652。在凸轮652的上表面，在外周部设置有凸轮轴653。凸轮652的旋转中心与离合器杆630的安装轴632的中心在前后方向上一致。
中继棒660向上下方向延伸，连结离合器杆630和凸轮652。中继棒660的上端部安装于离合器杆630的安装轴632，下端部安装于凸轮652的凸轮轴653。在中继棒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于安装板670。安装板670由螺钉固定于轴承单元500的安装凸台521。
在驱动单元30的驱动形态从单轴驱动形态切换向双轴驱动形态的情况下，如图2所示，通过转矩电机651工作，凸轮652以使凸轮轴653位于最下方的方式旋转。随着凸轮652旋转，离合器杆630的下端部被中继棒660拉向下方。离合器杆630以支轴641为中心向前方旋转，推压部631将离合器体610推向前方。离合器体610抵抗离合器弹簧620的弹力向前方移动，离合器体610的花键611与离合器承接板530的花键534沿着周向啮合。
当凸轮轴653移动到中间的规定位置时，离合器体610的花键611到达与花键534啮合的位置。这时，中继棒660的弹簧661处于自然长度的状态。由于离合器体610不会移动至比该啮合位置更靠近前方的位置，因此当凸轮轴653从规定位置移动至最下方的位置时，如图2所示，弹簧661伸长至下方。这样的话，由于离合器杆630被弹簧661拉动而向前方转动，因此处于啮合位置的 离合器体610被施加来自推压部631的推压力。由此，能使花键611与花键534可靠地啮合。
当花键611与花键534啮合时，由于离合器体610成为相对于轴承单元500不能转动的状态，因此行星齿轮机构400的行星架轴441即行星架440成为被固定成不能旋转的状态。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转，与翼轴200连结着的搅拌体24也以与转子110的旋转速度相等的旋转速度旋转。对于行星齿轮机构400而言，太阳轮410随着翼轴200的旋转而旋转。如上所述，由于行星架440处于被固定的状态，因此行星轮430的第一齿轮和第二齿轮分别与太阳轮410同向和逆向旋转，内齿轮420与太阳轮410同向旋转。由此，固定于内齿轮420的滚筒轴300以比翼轴200慢的旋转速度与翼轴200同向旋转，固定于滚筒轴300的滚筒22以比搅拌体24慢的旋转速度与搅拌体24同向旋转。换言之，搅拌体24以比滚筒22快的旋转速度与滚筒22同向旋转。
另一方面，在驱动单元30的驱动形态从双轴驱动形态切换向单轴驱动形态的情况下，如图3所示，通过转矩电机651的工作，凸轮652以使凸轮轴653位于最上方的方式进行旋转。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移动，中继棒660向上方移动，离合器杆630的下端部被中继棒660推动，向上方移动。离合器杆630以支轴641为中心向后方旋转，推压部631脱离离合器体610的凸缘部612。离合器体610通过离合器弹簧620的弹力向后方移动，离合器体610的啮合部613与离合器承接部130的被啮合部132沿着周向啮合。
当啮合部613与被啮合部132啮合时，离合器体610成为能与转子110一起旋转的状态。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旋转。此时，对于行星齿轮机构400而言，太阳轮410和行星架440以与转子110相等的旋转速度旋转。由此，内齿轮420以与太阳轮410以及行星架440相等的旋转速度旋转，固定于内齿轮420的滚筒轴300以与转子110相等的旋转速度旋转。即，在驱动单元30中，翼轴200、行星齿轮机构400以及滚筒轴300一体旋转。由此，滚筒22与搅拌体24一体旋转。
图9的(a)是表示从单轴驱动形态切换至双轴驱动形态时离合器体610的花键611与离合器承接板530的花键534啮合的样子的状态转换图，图9的(b)是表示从双轴驱动形态切换至单轴驱动形态时离合器体610的啮合部613与离合器承接部130的被啮合部132啮合的样子的状态转换图。
在为了向双轴驱动形态切换而使离合器体610移动至轴承单元500的离合器承接板530侧时，如图9的(a)的左图所示，可能会产生花键611、534的齿611a、534a彼此之间不相互啮合而对撞的情况。在该状态下，如上所述，离合器体610被离合器杆630持续推压向离合器承接板530侧。而且，在该状态下，随着转子110的旋转，由于与滚筒22连结着，承受的负荷较大的内齿轮420不旋转，而承受的负荷较小的行星架440旋转，离合器体610经由行星架轴441而旋转。当通过离合器体610的旋转，离合器体610的花键611的齿611a的位置错开到不受离合器承接板530的花键534的齿534a影响的位置时，如图9的(a)的右图所示，离合器体610猛然移动到离合器承接板530侧，齿611a、534a彼此相互啮合。此时，由于配置于离合器承接板530侧的轴承侧缓冲构件540会最先触碰到对象侧的离合器体610的前端部，因此对离合器体610的离合器承接板530侧的撞击力由轴承侧缓冲构件540吸收而减弱。由此，在离合器体610侧与离合器承接板530侧之间产生的撞击声降低。
同样，在为了向单轴驱动形态切换而使离合器体610移动至转子110的离合器承接部130侧时，如图9的(b)的左图所示，也有可能会发生啮合部613的啮合凸部613b与被啮合部132的啮合凹部132b不啮合而啮合凸部613b与被啮合部132的表面132a对撞的情况。在该状态下，如上所述，离合器体610被离合器弹簧620持续推压向离合器承接部130侧。在该状态下，随着转子110的旋转，当被啮合部132的啮合凹部132b的位置错开到与啮合部613的啮合凸部613b一致的位置时，如图9的(b)的右图所示，离合器体610猛然移动至离合器承接部130侧，啮合凸部613b与啮合凹部132b啮合。此时，由于配置于离合器体610侧的转子侧缓冲构件680会最先触碰到离合器承接部130的触碰面133，因此对离合器体610的离合器承接部130侧的撞击力由转子侧缓冲构件680吸收而减弱。由此，在离合器体610侧与离合器承接部130侧之间产生的撞击声降低。
需要说明的是，转子110、离合器承接板530以及离合器体610都由强化树脂形成。因此，在未设置比普通的树脂硬的轴承侧缓冲构件540和转子侧缓冲构件680的情况下，离合器体610侧与离合器承接板530侧之间、以及离合器体610侧与离合器承接部130侧之间的撞击声尤其容易变大。
图10是表示滚筒洗衣机1的结构的框图。
滚筒洗衣机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、以及模式选择按钮703c。电源按钮703a是用于接通以及切断滚筒洗衣机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是用于从洗涤运转的多个运转模式中选择任意的运转模式的按钮。操作部703将与用户操作的按钮对应的输入信号输出给控制部701。
水位传感器704检测外筒20内的水位，并将与检测到的水位对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，向驱动电机100提供驱动电流。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、变频电路等，并调整驱动电流，使得驱动电机100以由控制部701设定的旋转速度进行旋转。例如，作为电机驱动控制，使用PWM控制。在这种情况下，控制部701将基于检测到的旋转速度而决定的占空比的脉冲电压施加给驱动电机100，由此将与该脉冲电压对应的驱动电流提供给驱动电机100。
给水驱动部706根据来自控制部701的控制信号，向给水阀51提供驱动电流。排水驱动部707根据来自控制部701的控制信号，向排水阀40提供驱动电流。
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检测到驱动单元30的驱动形态已被切换至双轴驱动形态，将检测信号输出给控制部701。第二检测传感器655检测到驱动单元30的驱动形态已被切换至单轴驱动形态，将检测信号输出给控制部701。离合器驱动部708 根据基于第一检测传感器654和第二检测传感器655的检测信号而从控制部701输出的控制信号，向转矩电机651提供驱动电流。
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。存储部702存储有用于执行各种洗涤运转模式的洗涤运转的程序。此外，存储部702存储有用于执行这些程序的各种参数、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，对电机驱动部705、给水驱动部706、排水驱动部707、离合器驱动部708、门锁装置709等进行控制。
滚筒洗衣机1根据用户通过模式选择按钮703c实施的选择操作，进行各种运转模式的洗涤运转。洗涤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。需要说明的是，根据运转模式，有时候会进行两次以上的中间脱水过程和漂洗过程。
在洗涤过程以及漂洗过程中，驱动单元30的驱动形态被切换到双轴驱动形态。以使滚筒22内的洗涤物浸入水中的方式，在外筒20内蓄水至不到投入口11的下缘的规定的水位，在该状态下，驱动电机100交替进行正转和反转。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和反转。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突起部23被举起落下，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摩擦或被叶片24a搅拌。由此，洗涤物被洗涤或漂洗。
在像这样进行洗涤以及漂洗时，由于洗涤物不仅被施加由滚筒22的旋转产生的机械力，还被施加由搅拌体24产生的机械力，因此能期待清洗性能的提高。在中间脱水过程以及最终脱水过程中，驱动单元30的驱动形态被切换到单轴驱动形态。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变得远大于重力的旋转速度一体旋转。洗涤物通过离心力的作用被按压在滚筒22的内周面而被脱水。
这样，在进行脱水时，由于滚筒22和搅拌体24一体旋转，因此无需使贴在滚筒22上的洗涤物被搅拌体24搅拌，就能良好地将洗涤物脱水。
在本实施方式的滚筒洗衣机1中，洗涤、漂洗结束时，在控制部701使驱动电机100停止并使滚筒22停止之后，将驱动单元30的驱动形态从双轴驱动形态切换至单轴驱动形态。此外，在中间脱水结束时，在控制部701使驱动电机100停止并使滚筒22停止之后，将驱动单元30的驱动形态从单轴驱动形态切换至双轴驱动形态。
图11的(a)是表示滚筒22内的洗涤物从正面侧观察偏置于左侧的情况的示意图，图11的(b)是表示滚筒22内的洗涤物从正面侧观察偏置于右侧的情况的示意图。
在滚筒22处于停止状态的情况下，如图11的(a)所示，当滚筒22内的洗涤物偏置于左侧时，通过偏置的洗涤物，使滚筒22逆时针旋转的力发挥作用。另一方面，如图11的(b)所示，当滚筒22内的洗涤物偏置于右侧时，通过偏置的洗涤物，使滚筒22顺时针旋转的力发挥作用。
这样，在滚筒22内的洗涤物偏置于左右任意一方的情况下，当驱动形态为双轴驱动形态时，离合器体610的花键611的齿611a与离合器承接板530的花键534的齿534a以被强力按压向一侧的状态啮合，齿611a、534a双方的被按压的面之间的摩擦阻力增大。这样，即使为了从双轴驱动形态切换向单轴驱动形态切换而解除离合器杆630对离合器体610的推压，离合器体610通过离合器弹簧620被推压向转子110侧，花键611与花键534的齿611a、534a彼此也难以脱离啮合。因此，有可能无法顺利地从双轴驱动形态切换向单轴驱动形态。
同样，在滚筒22内的洗涤物偏置于左右任意一方的情况下，当驱动形态为单轴驱动形态时，离合器体610的啮合部613的啮合凸部613b与离合器承接部130的被啮合部132的啮合凹部132b以被强力按压向一侧的状态啮合，啮合凸部613b与啮合凹部132b的被按压的面彼此之间摩擦阻力增大。这样，即使为了从单轴驱动形态切换向双轴驱动形态而通过离合器杆630使离合器体610被推压至轴承单元500侧，啮合凸部613b与啮合凹部132b也难以脱离啮合。因此，有可能无法顺利地从单轴驱动形态切换向双轴驱动形态。
因此，在本实施方式中，用于顺利地进行驱动单元30的驱动形态切换的离合器驱动装置650和驱动电机100的驱动控制由控制部701来执行。
图12是切换驱动单元30的驱动形态时对离合器驱动装置650的转矩电机651和驱动电机100的通电动作的正时图。
在从单轴驱动形态向双轴驱动形态切换时、和从双轴驱动形态向单轴驱动形态切换时的双方，控制部701如图12所示，将驱动电机100以右旋转的方式通电而使转子110沿顺时针方向旋转后，将驱动电机100断电。然后，控制部701在不穿插断电期间而立即将驱动电机100以左旋转的方式通电而使转子110沿逆时针方向旋转后，将驱动电机100断电。然后，进一步地，控制部701在不穿插断电期间而立即将驱动电机100以右旋转的方式通电而使转子110沿顺时针方向旋转后，将驱动电机100断电。再然后，控制部701在不穿插断电期间而立即使驱动电机100以左旋转的方式通电而使转子110沿逆时针方向旋转后，将驱动电机100断电。最后，控制部701在不穿插断电期间而立即使驱动电机100以右旋转的方式通电，然后，为了在切换驱动形态后进行洗涤、漂洗、脱水等而使驱动电机100继续通电，使转子110连续旋转。
控制部701在像这样使驱动电机100通电-断电动作的期间，使转矩电机651工作。即，控制部701如图12所示，在最初将驱动电机100以右旋转的方式通电之后，直到将驱动电机100断电为止，使转矩电机651通电。之后，控制部701在从单轴驱动形态向双轴驱动形态切换时根据第一检测传感器654的检测将转矩电机651断电，并在从双轴驱动形态向单轴驱动形态切换时根据第一检测传感器654的检测将转矩电机651断电，但是无论哪种情况，转矩电机651的断电都是在最后驱动电机100以右旋转的方式通电之后进行。
通过以这样的正时使驱动电机100和转矩电机651工作，从而在转矩电机651工作期间，即通过移动机构部DM使离合器体610移动动作的期间，反别重复两次两次反转动作1和反转动作2，其中，反转动作1是使沿着顺时针方向旋转的转子110停止，然后立即使转子110逆时针旋转的动作反转动作2是使沿逆时针方向旋转的转子110停止，然后立即使转子110沿顺时针方向旋转的动作。
如图11的(a)所示，在滚筒22停止时洗涤物在滚筒22内偏置于左侧的 情况下，当驱动电机100的转子110沿着顺时针方向旋转时，滚筒22向与偏置的洗涤物所作用的力的方向相反的顺时针方向旋转。之后，当使驱动电机100停止时，由于此时滚筒22被作用了继续往顺时针方向移动的惯性力，因此偏置的洗涤物所作用的力被该惯性力抵消而变小。这样，在从双轴驱动形态向单轴驱动形态切换的情况下，由于将离合器体610的花键611的齿611a和离合器承接板530的花键534的齿534a按压向一侧的力减弱，因此花键611的齿611a变得容易脱离花键534的齿534a。此外，在从单轴驱动形态向双轴驱动形态切换的情况下，由于将离合器体610的啮合部613的啮合凸部613b和离合器承接部130的被啮合部132的啮合凹部132b按压向一侧的力减弱，因此啮合部613的啮合凸部613b变得容易脱离被啮合部132的啮合凹部132b。
此外，由于驱动电机100的转子110在停止后立即沿逆时针方向旋转，随之花键611、被啮合部132即将向将齿611a和齿534a、啮合凸部613b和啮合凹部132b按压向一侧的力减弱的方向旋转，因此花键611与花键534、啮合部613与被啮合部132更加难以脱离啮合。
这样，即使在滚筒22停止时洗涤物在滚筒22内偏置于左侧，通过在转矩电机651工作期间进行两次反转动作1，从而花键611与花键534也容易脱离啮合，并且啮合部613与被啮合部132也容易脱离啮合。同样，如图11的(b)所示，即使在滚筒22停止时洗涤物在滚筒22内偏置于右侧，通过在转矩电机651工作期间进行两次反转动作2，从而产生了与进行两次反转动作1相同的现象，因此花键611与花键534也容易脱离啮合，并且啮合部613与被啮合部132也容易脱离啮合。由此，能顺利地进行从双轴驱动形态向单轴驱动形态的切换，并且能顺利地进行从双轴驱动形态向单轴驱动形态的切换。
(实施方式的效果)
如以上所说明的，根据本实施方式，即使在为了向双轴驱动形态切换而使离合器体610移动至离合器承接板530侧时，花键611、534的齿611a、534a彼此不相互啮合而对撞，并在此后通过驱动电机100的旋转使得齿611a、534a彼此的位置错开而使离合器体610猛然移动到离合器承接板530侧，使齿611a、534a彼此之间相互啮合的情况下，此时，由于配置于离合器承接板530侧的轴承侧缓冲构件540会最先触碰到离合器体610的前端部，因此，对离合器体610 的离合器承接板530侧的撞击力也能通过轴承侧缓冲构件540来减弱。由此，能降低在离合器体610侧与离合器承接板530侧之间产生的撞击声。
此外，根据本实施方式，轴承侧缓冲构件540通过其凸缘部541被轴承部510和离合器承接板530夹住从而固定于离合器承接板530侧。因此，不使用螺钉等就能将轴承侧缓冲构件540容易地固定于离合器承接板530侧。
进而，根据本实施方式，即使在为了向单轴驱动形态切换而使离合器体610移动至离合器承接部130侧时，啮合凸部613b与啮合凹部132b不啮合而啮合凸部613b与被啮合部132的表面132a对撞，并在此后通过驱动电机100的旋转使得啮合凸部613b与啮合凹部132b的位置一致，离合器体610猛然移动至离合器承接部130侧而啮合凸部613b与啮合凹部132b啮合的情况下，此时，由于配置于离合器体610侧的转子侧缓冲构件680会最先触碰到离合器承接部130的触碰面133，因此，对离合器体610的离合器承接部130侧的撞击力也能通过转子侧缓冲构件680来减弱。由此，能降低在离合器体610侧与离合器承接部130侧之间产生的撞击声。
进而，根据本实施方式，转子侧缓冲构件680通过将其爪部681卡定在形成于离合器体610的孔部614，从而固定于离合器体610侧。因此，不使用螺钉等就能将转子侧缓冲构件680容易地固定于离合器体610侧。
进而，根据本实施方式，在进行从单轴驱动形态向双轴驱动形态的切换和从双轴驱动形态向单轴驱动形态的切换时，驱动电机100的转子110沿顺时针方向和逆时针方向旋转，从而在离合器体610通过移动机构部DM移动的期间，执行使沿顺时针方向旋转的转子110停止的动作和使沿逆时针方向旋转的转子110停止的动作。由此，即使在滚筒22停止时洗涤物在滚筒22内偏置于左右的任意一方，在从单轴驱动形态向双轴驱动形态切换的情况下，离合器体610的啮合部613与离合器承接部130的被啮合部132也容易脱离啮合，而在从双轴驱动形态向单轴驱动形态切换的情况下，离合器体610的花键611与离合器承接板530的花键534也容易脱离啮合。因此，根据本实施方式，能顺利地进行单轴驱动形态和双轴驱动形态之间的驱动形态的切换。
此外，在转矩电机651以难以脱离啮合的状态进行了工作的情况下，施加给转矩电机651的负荷有可能会增大。根据本实施方式，能防止施加给转矩电 机651的负荷增大。
进而，在从单轴驱动形态向双轴驱动形态切换的情况下，由于当啮合部613与被啮合部132不脱离啮合时离合器杆630就不会动，因此，只有中继棒660的弹簧661呈伸长的状态而转矩电机651结束工作。此后，当驱动电机100为了进行洗涤等而旋转时，由于将啮合凸部613b和啮合凹部132b按压向一侧的力减弱，因此变得容易脱离啮合。这样的话存在下述隐患：弹簧661迅速收缩而离合器杆630猛然活动，离合器体610被离合器杆630猛然推动而与离合器承接板530激烈撞击，产生大的撞击声。此外，在从双轴驱动形态向单轴驱动形态切换的情况下，当花键611与花键534不脱离啮合时，会在离合器弹簧620收缩的状态下直接通过转矩电机651的动作使得只有离合器杆630活动。此后，当转矩电机651结束工作，驱动电机100为了进行洗涤等而旋转，变得容易脱离啮合时，存在下述隐患：离合器弹簧620迅速伸长，离合器体610被离合器弹簧620猛然推动而与离合器承接部130激烈撞击，产生大的撞击声。根据本实施方式，由于花键611与花键534、啮合部613与被啮合部132能顺利脱离啮合，因此能防止在离合器体610与离合器承接板530之间、离合器体610与离合器承接部130之间产生大的撞击声。
进而，根据本实施方式，由于在驱动电机100的转子110从沿着一方方向旋转的状态停止后，转子110不穿插停止期间而立即沿相反方向旋转，因此能进一步减弱将花键611和花键534的齿611a和齿534a、啮合部613的啮合凸部613b和被啮合部132的啮合凹部132b按压向一侧的力，花键611与花键534、啮合部613与被啮合部132变得更容易脱离啮合。
进而，根据本实施方式，由于在最初将驱动电机100的转子110沿顺时针方向开始旋转之后，转矩电机651开始工作即移动机构部DM的离合器体610的移动动作开始，因此，在离合器体610的移动动作开始后迅速地进行使沿顺时针方向旋转的转子110停止的动作，能使花键611与花键534、啮合部613与被啮合部132容易脱离啮合。
(变更例)
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，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，为了降低离合器体610侧与离合器承接板530侧之间的撞击声，在离合器承接板530侧配置有轴承侧缓冲构件540。但是，如图11和图12所示，也可以在离合器体610侧配置轴承侧缓冲构件690来代替轴承侧缓冲构件540。
图13是将变更例所涉及的离合器体610的周边放大后的主要部分的剖视图。图14的(a)和(b)分别是变更例所涉及的轴承侧缓冲构件690的主视图和侧面剖视图。
轴承侧缓冲构件690由橡胶等弹性构件形成为圆环状。在轴承侧缓冲构件690，在中央形成有环状的槽部691。轴承侧缓冲构件690通过将该槽部691嵌入离合器体610的凸缘部612而固定于离合器体610。
如图13所示，在离合器体610的花键611与离合器承接板530的花键534啮合时，轴承侧缓冲构件690会最先触碰到离合器承接板530。由此，能降低离合器体610侧与离合器承接板530侧之间的撞击声。
此外，在上述实施方式中，为了降低离合器体610侧与离合器承接部130侧之间的撞击声，在离合器体610侧配置有转子侧缓冲构件680。但是，如图15所示，也可以在离合器承接部130侧配置转子侧缓冲构件140来代替转子侧缓冲构件680。
图15是变更例所涉及的驱动电机100的转子110的主视图。转子侧缓冲构件140由橡胶等弹性构件形成为圆环状，通过贴附于离合器承接部130的触碰面133等固定方法固定。在离合器体610的啮合部613与离合器承接部130的被啮合部132啮合时，转子侧缓冲构件140会最先触碰到离合器体610。由此，能降低离合器体610侧与离合器承接部130侧之间的撞击声。
进而，在上述实施方式中，如图12所示，在控制部701最初将驱动电机100以右旋转的方式通电之后，直到将驱动电机100断电为止，将转矩电机651通电。即，在最初使驱动电机100的转子110开始沿顺时针方向旋转之后，通过移动机构部DM使离合器体610的移动动作开始。但是，如图16的正时图所示，控制部701也可以在最初将驱动电机100以右旋转的方式通电的几乎同时使转矩电机651通电。即，也可以在最初使驱动电机100的转子110开始沿顺时针 方向旋转的几乎同时通过移动机构部DM使离合器体610的移动动作开始。
进而，在上述实施方式中，在驱动电机100的转子110从沿一个方向旋转的状态停止之后，转子110不穿插停止期间而立即沿相反的方向旋转。但是，也可以在使驱动电机100的转子110从沿一个方向旋转的状态停止之后使转子110穿插停止期间再沿相反的方向旋转。
进而，在上述实施方式中，虽然驱动电机100的转子110最初向顺时针方向旋转，但是转子110也可以最初向逆时针方向旋转。
进而，在上述实施方式中，滚筒轴300固定于内齿轮420，并且离合器体610与行星架轴441即行星架440连结。由此，在双轴驱动形态下，当翼轴200在行星架440由离合器体610固定的状态下旋转时，行星轮430随着太阳轮410的旋转而自转，内齿轮420以比太阳轮410慢的旋转速度旋转。但是，如图17所示，也可以采用滚筒轴300固定于行星架440的结构。在这种情况下，在内齿轮420安装有顶端部从滚筒轴300向后方突出的轴部421。而且，离合器体610与轴部421连结。即，离合器体610经由轴部421与内齿轮420连结。进而，行星轮430变更为只具有第一齿轮。在双轴驱动形态下，当翼轴200在内齿轮420由离合器体610固定的状态下旋转时，行星轮430随着太阳轮410的旋转而进行自转和公转，行星架440以比太阳轮410慢的旋转速度旋转。由此，固定于行星架440的滚筒轴300旋转。
进而，在上述实施方式中，驱动电机100的转子110通过翼轴200与搅拌体24直接结合，搅拌体24以与驱动电机100的旋转速度相等的旋转速度进行旋转。但是，在搅拌体24与驱动电机100之间，也可以与滚筒22同样夹有使用了齿轮的减速机构。在这种情况下，通过使用于搅拌体24的减速机构的减速比小于行星齿轮机构400的减速比，能使搅拌体24旋转得比滚筒22更快。
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洗衣机1不具备干衣功能，但本发明也能用于具备干衣功能的滚筒洗衣机，即滚筒洗衣干衣机。
此外，本发明的实施方式可以在技术方案示出的技术思想的范围内适当地进行各种变更。
附图标记说明
10：机壳；
20：外筒；
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：驱动电机；
110：转子；
130：离合器承接部；
132：被啮合部(第二被啮合部)；
140：转子侧缓冲构件(旋转部侧缓冲构件)；
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：太阳轮；
420：内齿轮；
430：行星轮；
440：行星架；
510：轴承部；
530：离合器承接板(固定部)；
534：花键(第一被啮合部)；
540：轴承侧缓冲构件(固定部侧缓冲构件)；
541：凸缘部；
600：离合器机构部；
610：离合器体；
611：花键(第一啮合部)；
613：啮合部(第二啮合部)；
614：孔部；
680：转子侧缓冲构件(旋转部侧缓冲构件)；
681：爪部；
690：轴承侧缓冲构件(固定部侧缓冲构件)；
DM：移动机构部。

Claims (5)

  1. 一种滚筒洗衣机，其特征在于，具备：
    外筒，配置在机壳内；
    滚筒，配置在所述外筒内，并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，且表面具有与洗涤物接触的突状部；以及
    驱动部，使所述滚筒和所述旋转体旋转，
    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，与所述第一旋转轴同轴设置，将所述驱动电机的旋转传递给所述滚筒；
    行星齿轮机构，具有随着所述驱动电机的旋转而旋转的太阳轮、包围该太阳轮的环状的内齿轮、夹在所述太阳轮与所述内齿轮之间的多个行星轮、以及自由旋转地保持这些行星轮的行星架，所述行星架和所述内齿轮当中的一方被固定于所述第二旋转轴；以及
    离合器机构部，在第一形态和第二形态之间切换基于所述驱动部的驱动形态，其中，所述第一形态是指使所述第一旋转轴与所述第二旋转轴独立旋转的驱动形态，所述第二形态是指使所述第一旋转轴与所述第二旋转轴一体旋转的驱动形态，
    所述离合器机构部包括：
    离合器体，以能与所述行星架和所述内齿轮当中的另一方一起旋转且能向所述第二旋转轴的轴线方向移动的状态被连结于该另一方；以及
    移动机构部，在向所述第一形态切换时使所述离合器体移动至第一位置， 并在向所述第二形态切换时使所述离合器体移动至第二位置，
    在所述离合器体中形成有具有凹凸形状的第一啮合部和具有凹凸形状的第二啮合部，
    在不与所述驱动电机一起旋转的固定部中形成有第一被啮合部，该第一被啮合部具有与所述第一啮合部的凹凸形状相对应的凹凸形状，并在所述离合器体移动至所述第一位置时与所述第一啮合部沿着周向啮合，
    在与所述驱动电机一起旋转的旋转部中形成有第二被啮合部，该第二被啮合部具有与所述第二啮合部的凹凸形状相对应的凹凸形状，并在所述离合器体移动至所述第二位置时与所述第二啮合部沿着周向啮合，
    在所述离合器体侧或所述固定部侧配置有固定部侧缓冲构件，该固定部侧缓冲构件会在所述第一啮合部与所述第一被啮合部啮合时最先触碰到对象侧，而减弱所述离合器体与所述固定部之间产生的撞击力。
  2. 根据权利要求1所述的滚筒洗衣机，其特征在于，
    所述驱动部还包括自由旋转地支承所述第二旋转轴的轴承部，
    所述固定部安装于所述轴承部，
    所述固定部侧缓冲构件配置在所述固定部侧，并具有由所述固定部和所述轴承部夹住的凸缘部
  3. 根据权利要求1或2所述的滚筒洗衣机，其特征在于，
    在所述离合器体侧或所述旋转部侧，配置有旋转部侧缓冲构件，该旋转部侧缓冲构件会在所述第二啮合部与所述第二被啮合部啮合时最先触碰到对象侧，而减弱所述离合器体与所述旋转部之间产生的撞击力。
  4. 一种滚筒洗衣机，其特征在于，具备：
    外筒，配置在机壳内；
    滚筒，配置在所述外筒内，并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，且表面具有与洗涤物接触的突状部；以 及
    驱动部，使所述滚筒和所述旋转体旋转，
    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，与所述第一旋转轴同轴设置，将所述驱动电机的旋转传递给所述滚筒；
    行星齿轮机构，具有随着所述驱动电机的旋转而旋转的太阳轮、包围该太阳轮的环状的内齿轮、夹在所述太阳轮与所述内齿轮之间的多个行星轮、以及自由旋转地保持这些行星轮的行星架，所述行星架和所述内齿轮当中的一方被固定于所述第二旋转轴；以及
    离合器机构部，在第一形态和第二形态之间切换基于所述驱动部的驱动形态，其中，所述第一形态是指使所述第一旋转轴和所述第二旋转轴独立旋转的驱动形态，所述第二形态是指使所述第一旋转轴和所述第二旋转轴一体旋转的驱动形态，
    所述离合器机构部包括：
    离合器体，以能与所述行星架和所述内齿轮当中的另一方一起旋转且能向所述第二旋转轴的轴线方向移动的状态被连结于该另一方；以及
    移动机构部，在向所述第一形态切换时使所述离合器体移动至第一位置，在向所述第二形态切换时使所述离合器体移动至第二位置，
    在所述离合器体中形成有具有凹凸形状的第一啮合部和具有凹凸形状的第二啮合部，
    在不与所述驱动电机一起旋转的固定部中形成有第一被啮合部，该第一被啮合部具有与所述第一啮合部的凹凸形状相对应的凹凸形状，并在所述离合器体移动至所述第一位置时与所述第一啮合部沿着周向啮合，
    在与所述驱动电机一起旋转的旋转部中形成有第二被啮合部，该第二被啮合部具有与所述第二啮合部的凹凸形状相对应的凹凸形状，并在所述离合器体 移动至所述第二位置时与所述第二啮合部沿着周向啮合，
    在所述离合器体侧或所述旋转部侧，配置有旋转部侧缓冲构件，该旋转部侧缓冲构件会在所述第二啮合部与所述第二被啮合部啮合时最先触碰到对象侧，而减弱所述离合器体与所述旋转部之间产生的撞击力。
  5. 根据权利要求3或4所述的滚筒洗衣机，其特征在于，
    所述旋转部侧缓冲构件配置在所述离合器体侧，并具有爪部，
    所述离合器体具有孔部，供所述爪部插入并卡定。
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US10745845B2 (en) 2015-12-01 2020-08-18 Qingdao Haier Washing Machine Co., Ltd. Drum washing machine
US11332872B2 (en) 2015-12-01 2022-05-17 Qingdao Haier Washing Machine Co., Ltd Drum washing machine

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