WO2015165161A1 - 滚筒洗衣机 - Google Patents

滚筒洗衣机 Download PDF

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Publication number
WO2015165161A1
WO2015165161A1 PCT/CN2014/083635 CN2014083635W WO2015165161A1 WO 2015165161 A1 WO2015165161 A1 WO 2015165161A1 CN 2014083635 W CN2014083635 W CN 2014083635W WO 2015165161 A1 WO2015165161 A1 WO 2015165161A1
Authority
WO
WIPO (PCT)
Prior art keywords
clutch
drum
shaft
clutch lever
lever
Prior art date
Application number
PCT/CN2014/083635
Other languages
English (en)
French (fr)
Inventor
田中启之
辻贵裕
直野浩树
Original Assignee
海尔亚洲国际株式会社
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 海尔亚洲国际株式会社, 青岛海尔洗衣机有限公司 filed Critical 海尔亚洲国际株式会社
Priority to CN201480002631.5A priority Critical patent/CN105229217B/zh
Publication of WO2015165161A1 publication Critical patent/WO2015165161A1/zh

Links

Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F23/00Washing 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 
    • D06F23/02Washing 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
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30Driving arrangements 
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30Driving arrangements 
    • D06F37/40Driving arrangements  for driving the receptacle and an agitator or impeller, e.g. alternatively

Definitions

  • the present invention relates to a drum washing machine.
  • the drum washing machine can be carried out continuously from washing to drying, or can be washed without drying. Background technique
  • the drum washing machine rotates the drum of the horizontal axis type in the outer tank in which the water is stored in the bottom, lifts and lowers the laundry by a baffle provided in the drum, and passes the laundry to the inner peripheral surface of the drum.
  • the laundry is washed by being beaten (refer to Patent Document 1).
  • the laundry is less likely to be intertwined with each other or the fully automatic washing machine, the mechanical force acting on the laundry is liable to be small, and the washing performance is liable to be lowered.
  • Patent Document 1 Japanese Laid-Open Patent Publication No. 2013-240577 SUMMARY OF INVENTION
  • the drive unit that drives the drum and the agitating body is provided with a clutch mechanism that switches the form of the drive unit between the first form and the second form, wherein the first form is to rotate the drum and the agitator respectively.
  • the second form is to rotate the drum and the agitating body integrally.
  • a clutch body that switches between the first mode and the second mode by moving the clutch mechanism portion between the two positions, and a configuration of a clutch lever for moving the clutch body.
  • the clutch body is interlocked with a rotating shaft for rotating the stirring body or a rotating shaft for rotating the drum. Therefore, in the first aspect, the action of the agitating body or the drum is caused, and the clutch body is intentionally applied. A strong situation outside the material. In this case, a strong force is applied to the clutch lever that is in contact with the clutch body, and the clutch lever may be deformed or broken.
  • 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 capable of improving the reliability of a clutch mechanism portion by suppressing deformation, breakage, or the like of a clutch lever that constitutes a clutch mechanism portion.
  • a drum washing machine includes: an outer tub disposed in a casing; and a drum disposed in the outer tub, rotatable about a horizontal axis or a tilting axis that is inclined with respect to a horizontal direction; a baffle, a setting An inner peripheral surface of the drum; a rotating body disposed at a rear portion of the drum, having a protrusion on the surface in contact with the laundry; and a driving portion that causes the drum and the rotating body to The rotational speed of the rotating body is rotated faster than the rotational speed of the drum.
  • the driving portion includes: a driving motor; a first rotating shaft that transmits rotation of the driving motor to the rotating body; a second rotating shaft that transmits rotation of the driving motor to the drum; and a clutch mechanism And switching the form of the driving unit between the first form and the second form, wherein the first form is to rotate the first rotating shaft and the second rotating shaft, respectively
  • the form is such that the first rotating shaft and the second rotating shaft rotate integrally.
  • the clutch mechanism portion includes: a clutch body that moves to a first position when switching to the first form, and moves to a second position when switching to the second form; the clutch lever is freely rotated about a pivot point Providing, by pushing the clutch body, moving the clutch body from the second position to the first position, and maintaining the clutch body when the clutch body is in the first position a state in which the clutch body is in contact; a clutch driving device for moving the clutch lever; and a buffer portion for, in a state in which the clutch body is in the first position, in a state toward the second position When the clutch body acts on the clutch lever via the clutch body, the clutch lever is moved in the direction of the second position to weaken the force received by the clutch lever.
  • the drive unit further includes a planetary gear mechanism having: a sun gear; an annular internal gear surrounding the sun gear; and a plurality of planets a gear, interposed between the sun gear and the internal gear; and a planetary carrier that holds the planetary gears in a rotationally free manner, wherein the sun gear is fixed to the first rotating shaft, One of the planetary carrier and the internal gear is fixed to the second rotating shaft.
  • a planetary gear mechanism having: a sun gear; an annular internal gear surrounding the sun gear; and a plurality of planets a gear, interposed between the sun gear and the internal gear; and a planetary carrier that holds the planetary gears in a rotationally free manner, wherein the sun gear is fixed to the first rotating shaft, One of the planetary carrier and the internal gear is fixed to the second rotating shaft.
  • the clutch body and the other of the carrier and the internal gear are restricted in the circumferential direction with respect to the other side and the axial direction of the second rotating shaft
  • the movement is coupled to the permitted state, and the clutch body is engaged with the fixing member that does not rotate when the drive motor rotates at the first position, and the other is in a state in which the other one cannot rotate, thereby switching to
  • the clutch body is engaged with the rotor of the drive motor at the second position, and the other is rotated together with the drive motor, thereby switching to the second form.
  • the clutch lever pushes the clutch body toward the fixing member side in the first aspect.
  • the clutch body can be tightly engaged with the fixing member.
  • the clutch lever since the clutch lever is in close contact with the clutch body, it is susceptible to the force generated by the clutch body. However, even if the clutch lever receives such a force, it is difficult to cause deformation, breakage, or the like.
  • the clutch mechanism portion further includes a clutch supporting portion that can rotate the clutch lever about the fulcrum and can The clutch lever is supported in such a manner that the clutch body moves in the moving direction.
  • the buffer portion includes: an elastic member that causes the clutch lever to be in contact with the clutch body at the first position, at a position of the fulcrum Pulling from the second position toward the first position.
  • the clutch lever is movable in the moving direction of the clutch body with respect to the lever support portion, and when a force in the direction toward the second position is applied to the clutch lever, the clutch lever is moved by the elastic member to be extended, and the application can be weakened. The force applied to the clutch lever.
  • the clutch mechanism portion includes a relay portion interposed between the clutch driving device and the clutch lever through the clutch.
  • the clutch lever is pulled by the operation of the driving device, whereby the clutch lever is rotated in a direction in which the clutch body is pressed.
  • the buffer portion includes: an elastic member included in the relay portion and capable of expanding and contracting in a direction in which the clutch lever is pulled.
  • the clutch body has a circular shape as viewed from the moving direction of the clutch body.
  • the clutch lever includes: an annular portion surrounding the clutch body; and at least one pair of pressing portions provided at the annular portion to urge the clutch.
  • the portion where the pressing portion is formed is formed in a ring shape, the portion can be stabilized, and when an unexpected force is applied to the pressing portion, deformation or breakage of the clutch lever can be further suppressed.
  • the reliability of the clutch mechanism portion can be improved by suppressing deformation, breakage, and the like of the clutch lever that constitutes the clutch mechanism portion.
  • Figure 1 shows ffi ⁇ '/ ⁇
  • Fig. 2 is a cross-sectional view showing a configuration of a drive unit according to an embodiment.
  • FIG. 3 is a front view of the rotor showing a configuration of a rotor of a drive motor according to the embodiment.
  • 4 is a view showing a configuration of a wing shaft, a drum shaft, and a planetary gear mechanism according to an embodiment.
  • Fig. 5 is a view showing a configuration of a front unit of a bearing unit according to an embodiment.
  • Fig. 6 is a view showing a configuration of a rear unit of a bearing unit according to an embodiment.
  • Fig. 7 is a view showing a configuration of a rear unit of a bearing unit according to an embodiment.
  • FIG. 8 is a view showing a configuration of a clutch body of a clutch mechanism portion according to an embodiment.
  • FIG. 9 is a view showing a configuration of a moving mechanism portion of a clutch mechanism portion according to the embodiment.
  • FIG. 10 is a view for explaining an operation of a clutch mechanism unit according to the embodiment.
  • Fig. 11 is a view for explaining the operation of the drive unit, the drum, and the agitating body in the washing step and the rinsing step according to the embodiment.
  • FIG. 12 is a view for driving the intermediate dehydration process and the final dehydration process according to the embodiment. The operation of the element, the drum, and the stirring body will be described.
  • FIG. 13 is a view for explaining an operation of the clutch lever when the pressing portion of the clutch lever is strongly moved rearward in the first embodiment according to the embodiment.
  • Fig. 14 is a view showing a configuration of a clutch mechanism portion according to Modification 1.
  • Fig. 15 is a view for explaining an operation of a clutch mechanism unit according to Modification 1.
  • Fig. 16 is a view for explaining an operation of the clutch lever when the pressing portion of the clutch lever is strongly moved rearward in the first embodiment according to the first modification.
  • Fig. 17 is a view showing a configuration of a clutch mechanism portion according to Modification 2.
  • FIG. 18 is a view showing a configuration of a clutch mechanism portion according to Modification 2.
  • Fig. 19 is a view for explaining an operation of a clutch mechanism unit according to Modification 2.
  • FIG. 20 is a view for explaining an operation of the clutch lever when the pressing portion of the clutch lever is strongly moved rearward in the first embodiment according to the second modification.
  • Fig. 21 is a view for explaining a configuration of a clutch mechanism portion according to another 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 constituting an exterior.
  • the front surface 10a of the casing 10 is inclined upward from the central portion, and the inclined surface is formed with an inlet 11 for washing.
  • the entrance 11 is covered by a door 12 that is opened and closed freely.
  • the outer groove 20 is elastically supported by a plurality of dampers 21.
  • the drum 22 is disposed in the outer tank 20 in a rotationally free manner.
  • the outer groove 20 and the rear surface side of the drum 22 are inclined in such a manner as to be lowered in the horizontal direction. Thereby, the drum 22 rotates around the tilting axis that is inclined with respect to the horizontal direction.
  • the inclination angle of the outer groove 20 and the drum 22 can be made to be 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 in the inner circumferential surface of the drum 22.
  • the three baffles 23 are provided on the inner circumferential surface of the drum 22 at substantially equal intervals in the circumferential direction.
  • the agitating body 24 is disposed in a rotationally free manner at the rear of the drum 22.
  • the stirring body 24 has substantially 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 tub 20.
  • the drive unit 30 corresponds to the drive unit of the present invention.
  • the drive unit 30 rotates the drum 22 and the agitating body 24 at different rotational speeds in the same direction during the washing process and the rinsing process. 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, so that the agitating body 24 rotates at a rotational speed faster than the rotational speed of the drum 22.
  • the driving unit 30 integrally rotates the drum 22 and the agitating body 24 at a rotational speed at which the centrifugal force of the laundry applied to the drum 22 is much larger than the gravity during the spin-drying process.
  • 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 pipe 41. When the drain valve 40 is opened, the water stored in the outer tank 20 is discharged to the outside through the drain pipe 41.
  • a detergent box 50 is disposed in the front upper portion of the casing 10.
  • the lotion container 50a containing the detergent in the detergent box 50 is housed so as to be freely extracted 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 pipe 52. Further, the detergent box 50 is connected to the upper portion of the outer tub 20 through the water injection pipe 53.
  • the water supply valve 51 When the water supply valve 51 is opened, tap water is supplied from the faucet to the outer tank 20 through the water supply pipe 52, the detergent box 50, and the water injection pipe 53. At this time, the detergent contained in the lotion container 50a is supplied to the outer tub 20 along the water flow.
  • FIG. 2 is a cross-sectional view showing the structure of the drive unit 30.
  • FIG. 3 is a front view showing the rotor 110 of the structure of the rotor 110 of the drive motor 100.
  • 4(a) and (b) are views showing the configurations of the wing shaft 200, the drum shaft 300, and the planetary gear mechanism 400.
  • Figure 4 (a) is a side cross-sectional view
  • Figure 4 (b) is a cross-sectional view taken along line A-A' of Figure 4 (a).
  • 5(a) and (b) are views showing the structure of the front unit 510 of the bearing unit 500, which are a front view and a rear view, respectively, of the front unit 510.
  • 6 and 7 are views showing the configuration of the rear unit 520 of the shaft unit 500.
  • FIG. 6 is a front view of the rear unit 520.
  • 7(a) is a rear view of the rear unit 520
  • FIG. 7(b) is an enlarged perspective view of the rear portion of the rear unit 520.
  • 8(a) to (c) are diagrams showing the configuration of the clutch body 610 of the clutch mechanism portion 600, which are a front view, a right side view, and a rear view, respectively, of the clutch body 610.
  • Figure 9 (a) to (d) are shown A diagram showing the configuration of the moving mechanism unit DM of the clutch mechanism unit 600.
  • 9(a) to (c) are a rear view, a right side view, and a plan view, respectively, of the moving mechanism portion DM, and Fig.
  • FIGS. 8(a) to (c) the state in which the clutch body 610 has been mounted on the carrier shaft 442 of the carrier 440 is shown.
  • 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 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, i.e., 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 is capable of supporting the wing shaft 200 and the drum shaft 300 in a rotationally free manner.
  • the clutch mechanism unit 600 switches between the first mode and the second mode in which the configuration of the driving unit 30 is such that the agitating body 24, that is, the wing shaft 200, rotates at the same speed as the rotational speed of the driving motor 100.
  • the rotation of the speed causes the drum 22, that is, the drum shaft 300 to rotate at a rotation speed decelerated by the planetary gear mechanism 400.
  • the second aspect 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 can be rotated.
  • the unitary rotation is performed at a rotation speed equal to that of the drive motor 100.
  • the drive motor 100 is an outer rotor type DC brushless motor, and includes a rotor 110 and a stator 120.
  • the rotor 110 is formed in a bottomed cylindrical shape, and the permanent magnets 111 are arranged over the entire circumference on the inner peripheral surface thereof.
  • 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 a ring-shaped engaged recess 114 is formed on the outer circumference of the boss hole 113.
  • the outer peripheral portion of the engaged concave portion 114 has the uneven portion 114a over the entire circumference.
  • the stator 120 has a coil 121 at the outer peripheral portion.
  • a control circuit not shown, supplies a drive current to the coil 121 of the stator 120, the rotor 110 rotates.
  • a screw hole 122 is formed at an upper portion of the stator 120 and at three left and right intervals at intervals of substantially 120 degrees. Each of the screw holes 122 has the same distance in the radial direction from the center of the stator 120. Further, in Fig. 2, only one screw hole 122 above is illustrated.
  • the drum shaft 300 has a hollow shape, and includes a wing shaft 200 and a planetary gear mechanism 400.
  • the drum shaft 300 includes a front shaft portion 300a, a rear shaft portion 300b, and a housing portion 300c provided between the front shaft portion 300a and the rear shaft portion 300b and bulging outward from the front shaft portion 300a and the rear shaft portion 300b.
  • the planetary gear mechanism 400 is housed in the accommodating portion 300c.
  • the front portion of the front shaft portion 300a is formed to be larger than the inner diameter of the rear portion, and the first sliding shaft 301 is disposed in the large diameter portion 300d having a large inner diameter.
  • a mechanical seal 302 is disposed in front of the first sliding bearing 301 with a restriction ring to be described later on the large diameter portion 300d.
  • the first sliding bearing 301 and the mechanical seal 302 are inserted into the large diameter portion 300d from the front side, and are fixed to the drum shaft 300 by a fixing method such as press fitting.
  • the drum shaft 300 is divided in the front-rear direction, and is composed of two members, that is, the front member M1 and the rear member M2, so that the planetary gear mechanism 400 can be housed in the accommodating portion 300c.
  • the planetary gear mechanism 400 includes: a sun gear 410; a ring-shaped internal gear 420 surrounding the sun gear 410; a plurality of sets of planet gears 430 interposed between the sun gear 410 and the internal gear 420; and a planetary carrier 440 passing through the support shaft 441 These planet gears 430 are held in a rotationally free manner.
  • a set of planet gears 430 has a first gear 431 and a second gear 432.
  • the two gears of the first gear 431 and the second gear 432 mesh with each other, and the first gear 431 meshes with the sun gear 410, and the second gear 432 meshes with the internal gear 420.
  • the planet carrier 440 includes a carrier shaft 442 that extends rearward.
  • the carrier shaft 442 is coaxial with the drum shaft 300, and is internally hollow to allow the wing shaft 200 to be inserted.
  • the carrier shaft 442 is formed such that the inner diameter of the portion from the front end portion to the root portion is larger than the inner diameter portion, and the second sliding shaft 443 is disposed on the large diameter portion 442a having a large inner diameter.
  • a front end portion 442b of the carrier shaft 442 projecting rearward from the drum shaft 300 is formed with a rack 442c on the outer peripheral surface.
  • An annular restricting flange 201 is formed at the rear end portion of the wing shaft 200.
  • the wing shaft 200 is inserted into the drum shaft 300 from the rear.
  • An annular restriction ring 202 is fixed to the front end portion of the inserted wing shaft 200.
  • the restriction ring 202 is inserted into the large diameter portion 300d from the front side, and is fixed to the wing shaft 200 by a fixing method such as press fitting.
  • the restriction ring 202 is in contact with the first sliding bearing 301 via the first washer 203 and is in contact with the mechanical seal 302 via the second washer 204.
  • the restricting flange 201 is engaged with the rear end of the carrier shaft 442, and is engaged with the first sliding bearing 301 via the restricting ring 202 via the first washer 203, thereby restricting the movement of the wing shaft 200 in the front-rear direction.
  • the wing shaft 200 inserted into the inside of the drum shaft 300 has its outer peripheral surface sliding between the first sliding bearing 301 and the second sliding bearing 443. Thereby, the wing shaft 200 smoothly rotates in the drum shaft 300. Further, water can be prevented from intruding between the drum shaft 300 and the wing shaft 200 by the mechanical seal 302. Further, when the wing shaft 200 rotates, the restriction ring 202 slides between the first washer 203 and the second washer 204. Therefore, the abrasion of the first sliding bearing 301 and the mechanical seal 302 caused by the sliding of the restriction ring 202 can be prevented.
  • a sun gear 410 is fixed to an intermediate portion of the wing shaft 200.
  • a plurality of key portions 421 extending in the front-rear direction are formed at a plurality of positions on the outer circumferential surface of the internal gear 420, and are inside the drum shaft 300.
  • a key groove portion 303 corresponding to the key portion 421 is formed on the circumferential surface. The key portion 421 is engaged with the key groove portion 303, and the drum shaft 300 and the internal gear 420 are fixed in the circumferential direction.
  • the rear end portion of the wing shaft 200 projects rearward from the carrier shaft 442 and is fixed to the boss hole 113 of the rotor 110.
  • the sun gear 410 rotates.
  • the planetary carrier 440 is in a state of being fixed in a non-rotational manner, since the planetary gear 430 cannot revolve, only the rotation of the sun gear 410 is performed with the rotation. That is, the first gear 431 rotates in the opposite direction to the sun gear 410, and the second gear 432 rotates in the same direction as the sun gear 410. With the rotation of the second gear 432, the internal gear 420 is in the same direction as the second gear 432, i.e., rotates in the same direction as the sun gear 410. Thereby, the drum shaft 300 fixed to the internal gear 420 rotates.
  • the bearing unit 500 includes a front unit 510 and a rear unit 520.
  • the bearing unit 500 corresponds to the fixing member of the present invention.
  • the front unit 510 is provided with a cylindrical front axle portion 511 at the center portion.
  • a mechanical seal 512 is disposed on the front side of the front axle portion 511, and a first rolling shaft 513 is disposed on the rear side.
  • a fitting recess 514 is formed around the front bearing portion 511 on the rear side of the front unit 510.
  • the outer peripheral surface 514a of the fitted recessed portion 514 has a circular shape whose center coincides with the center P1 of the first rolling axis 513 disposed in the state of the front axle portion 511.
  • Mounting holes 515 are formed in the outer peripheral portion of the front unit 510 at four places of up, down, left, and right. Further, two mounting bosses 516 are formed at the lower portion of the outer peripheral portion of the front unit 510. Mounting holes 516a are formed in the mounting boss 516.
  • a cylindrical covering portion 521 having an inner diameter slightly larger than the outer diameter of the accommodating portion 300c of the drum shaft 300 and covering the accommodating portion 300c is provided on the rear side of the central portion of the rear unit 520, behind the covering portion 521.
  • a cylindrical rear axle portion 522 having an inner diameter smaller than the outer diameter of the accommodating portion 300c is provided.
  • a second rolling bearing 523 is disposed on the front side of the rear bearing portion 522, and a spring impact plate 524 is disposed behind the second rolling bearing 523.
  • a rack 525 is formed on the inner surface of the rear end portion of the rear bearing portion 522 over the entire circumference.
  • Three mounting bosses 526 are formed on the rear side of the rear unit 520.
  • Each of the upper and left and right positions corresponding to 122 forms a respective mounting sleeve 526.
  • a mounting hole 526a is formed in the mounting boss 526.
  • Each of the mounting holes 526a has the same distance in the radial direction from the center P2 of the second rolling bearing 523 disposed in the state of the rear shaft portion 522.
  • An annular fitting rib 527 is formed on the front side of the center portion of the rear unit 520.
  • the outer peripheral surface 527a of the fitting rib 527 has a circular shape whose center coincides with the center P2 of the second rolling bearing 523.
  • the diameter of the outer peripheral surface 527a of the fitting rib 527 is equal to the diameter of the outer peripheral surface 514a of the fitted recess 514.
  • a screw hole 528 is formed in the outer peripheral portion of the rear unit 520.
  • Each of the screw holes 528 is formed at each of the upper, lower, left, and right positions of the front unit 510 corresponding to the mounting hole 515.
  • the front unit 510 is coupled to the rear unit 520 in a state where the inner package wing shaft 200 and the drum shaft 300 of the planetary gear mechanism 400 are disposed in the front unit 510.
  • the fitting rib 527 is fitted into the fitted recess 514.
  • the outer peripheral surface 527a of the fitting rib 527 is in contact with the outer peripheral surface 514a of the fitted recess 514.
  • the front unit 510 and the rear unit 520 are coupled by the outer peripheral surface 527a of the fitting rib 527 and the insertion fitting by the outer peripheral surface 514a of the fitting recess 514.
  • the screw 530 passes through the screw hole 528 and is blocked by the mounting hole 515. Thereby, the front unit 510 is fixed to the rear unit 520.
  • the drum shaft 300 is disposed inside the shaft 7 unit 500.
  • the outer peripheral surface of the front shaft portion 300a of the drum shaft 300 is received by the first rolling shaft 513, and the outer peripheral surface of the rear shaft portion 300b is received by the second rolling bearing 523. Thereby, the drum shaft 300 smoothly rotates in the bearing unit 500. Further, by providing the mechanical seal 512 at the front end portion of the front axle portion 511, it is possible to prevent water from entering between the bearing unit 500 and the drum shaft 300.
  • the stator 120 of the drive motor 100 is fixed to the mounting boss 526 of the rear unit 520. At this time, the screw 540 is blocked by the mounting hole 526a through the screw hole 122.
  • the bearing unit 500 is fixed to the rear surface of the outer tub 20 by a fixing method such as screwing.
  • a fixing method such as screwing.
  • the wing shaft 200 and the drum shaft 300 face the inner portion 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 portion 600 includes a clutch body 610, a clutch spring 620, a clutch lever 630, a lever support portion 640, a clutch drive device 650, and a mounting plate 660.
  • the clutch spring 620, the clutch lever 630, the lever supporting portion 640, the clutch driving device 650, and the mounting plate 660 constitute a moving mechanism portion DM that moves the clutch body 610 in the front-rear direction.
  • 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 engaged with the rack 525 at the rear end portion of the rear unit 520 Formed.
  • 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 of the clutch body 610.
  • 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. When the engagement flange portion 613 is inserted into the engaged recessed portion 114, the uneven portions 613a and 114a are engaged with each other.
  • a shaft hole 614 into which the carrier shaft 442 is inserted is formed at a central portion of the front surface of the clutch body 610.
  • a rack 614a is formed on the inner peripheral surface of the shaft hole 614.
  • the rack 614a is engaged with the rack 442c of the carrier shaft 442.
  • an annular receiving groove 615 is formed on the outer surface of the shaft hole 614 on the front surface of the clutch body 610.
  • the receiving groove 615 has a depth reaching the rear end portion.
  • a clutch spring 620 is housed in the housing groove 615. One end of the clutch spring 620 is in contact with the spring impact plate 524 of the rear unit 520, and the other end is in contact with the bottom surface of the receiving groove 615.
  • the clutch lever 630 includes a substantially semicircular upper rod 631 along the outer peripheral surface of the lower half of the clutch body 610, and a lower rod 632 extending downward from the lowermost portion of the upper rod 631.
  • a pressing portion 633 which is in contact with the rear surface 612a of the flange portion 612 of the clutch body 610 and pushes the flange portion 612 forward is formed at the right and left upper end portions of the upper rod 631.
  • a clutch body 610 is drawn for convenience of explanation.
  • the support shaft 634 which becomes the fulcrum at the time of rotation is fixed to the clutch lever 630.
  • the support shaft 634 penetrates the right and left of the clutch lever 630, and both end portions thereof are protruded from the clutch lever 630 to the left and right.
  • the lever support portion 640 supports the clutch lever 630 in a rotationally free manner.
  • the lever support portion 640 includes a bottom plate 641, and an arm piece 642 that rises from both ends of the bottom plate 641.
  • the arm piece 642 is formed with a fulcrum hole 643.
  • the support hole 643 is a hole long in the front-rear direction in which the front and rear end portions are rounded, and the width in the up-and-down direction is also larger than the diameter of the support shaft 634.
  • the fulcrum 634 passes through the fulcrum hole 643.
  • a first mounting shaft 644 is provided in the rod support portion 640 in front of the spindle hole 643.
  • Two first springs 645 are mounted side by side in the left-right direction between the support shaft 634 and the first mounting shaft 644.
  • the first spring 645 corresponds to the elastic member of the present invention.
  • the first spring 645 passes through the first insertion hole 635 formed in the clutch lever 630.
  • the first spring 645 is a tension spring. In the mounted state, the first spring 645 is extended to pull the fulcrum 634 forward.
  • the clutch lever 630 is rotatable in the front-rear direction about the fulcrum 634.
  • a second mounting shaft 646 is provided below the first mounting shaft 644 at the lever support portion 640.
  • a third mounting shaft 636 is provided on the clutch lever 630.
  • a second spring 647 is mounted between the second mounting shaft 646 and the third mounting shaft 636.
  • the second spring 647 is a tension spring. When installed, the second spring 647 passes through the second insertion hole 637 formed in the clutch lever 630. In the mounted state, the second spring 647 is extended, and the lower end of the lower rod 632 of the clutch lever 630 is pulled in the forward direction by the elastic force of the second spring 647.
  • the clutch driving device 650 includes a torque motor 651 and a disk-shaped cam 652 that rotates around the horizontal axis by the torque of the torque motor 651.
  • the upper surface of the cam 652 is in contact with the lower end of the lower rod 632.
  • the upper surface of the cam 652 includes: a first contact surface 652a having a high height disposed on one end side, a second contact surface 652b having a low height disposed on the other end side, and a first contact surface 652a and a second contact surface 652b An inclined surface 652c that is connected.
  • the lever support portion 640 and the clutch drive device 650 are fixed to the mounting plate 660 by a fixing method such as screwing.
  • the mounting plate 660 is fixed to the mounting boss 516 of the front unit 510 by screws.
  • the cam 652 When the form of the driving unit 30 is switched from the second mode to the first mode, as shown in FIG. 10(a), the cam 652 is located above the first contact surface 652a and the second contact surface 652b is located below by the torque motor 651. The way to rotate. As the cam 652 rotates, the lower end of the lower rod 632 is sequentially urged to move rearward by the inclined surface 652c and the first contact surface 652a. The clutch lever 630 is rotated forward about the spindle 634, and the upper lever 631 is moved forward. The pressing portion 633 of the upper rod 631 pushes the flange portion 612 of the clutch body 610 forward, and the clutch body 610 moves forward against the elastic force of the clutch spring 620.
  • the clutch body 630 is slightly closer to the position where the clutch lever 630 is moved to the rearmost position by the contact with the first contact surface 652a.
  • the rack 611 reaches a position where it is engaged with the rack 525 of the bearing unit 500. Since the clutch body 610 does not move further forward than the engagement position, when the clutch lever 630 moves from the immediately preceding position to the rearward position, as shown in FIG. 10(a), the pressing portion 633 does not move.
  • the lower rod 632 moves rearward, and the support shaft 634 that is pressed to the front side arc of the support shaft hole 643 slightly moves rearward.
  • the cam 652 is positioned above the second contact surface 652b by the torque motor 651.
  • a contact surface 652a is rotated in a downward manner.
  • the cam 652 rotates, the lower end of the lower rod 632
  • the inclined surface 652c and the second contact surface 652b are sequentially moved in the same direction and moved forward.
  • the clutch lever 630 rotates rearward about the support shaft 634, and the upper lever 631 moves rearward.
  • the pressing portion 633 of the upper rod 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 engaging flange portion 613 is brought into engagement with the engaged concave portion 114 of the rotor 110. s position.
  • Drum washing machine 1 Perform washing operation for various operating procedures.
  • the washing operation includes a washing process, an intermediate dewatering process, a rinsing process, and a final dewatering process.
  • Figs. 11(a) and (b) are views for explaining the operation of the drive unit 30, the drum 22, and the agitating body 24 in the washing step and the rinsing step.
  • Fig. 12 (a) and (b) are views for explaining the operations of the drive unit 30, the drum 22, and the agitating body 24 in the intermediate dehydration step and the final dehydration step.
  • the form of the drive unit 30 is switched to the first form.
  • the rack 611 of the clutch body 610 and the rack 525 of the bearing unit 500 are stuck. Hehe.
  • the carrier shaft 442 of the planetary gear mechanism 400 that is, the carrier 440 is fixed in a non-rotatable manner. status.
  • 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 a rotational speed equal to the rotational speed of the rotor 110.
  • the sun gear 410 rotates in the planetary gear mechanism 400 with the rotation of the wing shaft 200.
  • the carrier 440 since the carrier 440 is in a fixed state, the first gear 431 and the second gear 432 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.
  • the drum shaft 300 rotates in the same direction as the wing shaft 200 at a rotational 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.
  • the agitating body 24 rotates in the same direction as the drum 22 at a rotational speed faster than the drum 22.
  • the rotational speed of the rotor 110 and the reduction ratio of the planetary gear mechanism 400 may be appropriately set so that the agitating body 24 is rotated at a rotational speed capable of rubbing or agitating the laundry without damage, and the rotational speed of the drum 22 The centrifugal force that causes the laundry acting on the drum 22 to become smaller than the gravity.
  • the drive motor 100 alternately performs right rotation and left rotation.
  • the drum 22 and the agitating body 24 alternately perform the right rotation and the left rotation in a state where the rotation speed of the agitating body 24 is faster than the rotation speed of the drum 22.
  • the laundry in the drum 22 is dropped to the inner circumferential surface of the drum 22 by being lifted up by the shutter 23 and dropped.
  • the laundry comes into contact with the blades 24a of the rotating agitating body 24, and the laundry rubs against the blades 24a or the laundry is stirred by the blades 24a. Thereby, the laundry is washed or rinsed.
  • the form of the drive unit 30 is switched to the second form.
  • the engaging flange portion 613 of the clutch body 610 is fitted into the card of the rotor 110.
  • the concave portion 114 and the uneven portion 613a of the engagement flange portion 613 are engaged with the uneven portion 114a of the engaged concave portion 114.
  • the clutch spring 620 is maintained in a contracted state, and the engagement flange portion 613 is pressed against the engaged recess portion 114 by the elastic force of the clutch spring 620. .
  • the pressing portion 633 is separated from the clutch body 610.
  • the internal gear 420 rotates at the same rotational speed as the sun gear 410 and the carrier 440, and the roller 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, as shown by dashed-dotted lines in Figs. 12(a) and (b), the wing shaft 200, the planetary gear mechanism 400, and the drum shaft 300 integrally rotate. Thereby, the drum 22 and the agitating body 24 are rotated. Further, the clutch spring 620 also rotates with the clutch body 610.
  • the rotor 110 that is, the drum 22 and the agitating body 24, rotate so that the centrifugal force acting on the laundry in the drum 22 is much larger than the rotational speed of gravity.
  • the laundry is pressed to the inner peripheral surface of the drum 22 to be dehydrated by the action of the centrifugal force.
  • the clutch body 610 is interlocked with the wing shaft 200 and the drum shaft 300. Therefore, in the first embodiment, when the rack 611 of the clutch body 610 is engaged with the rack 525 of the bearing unit 500, the clutch body 610 is temporarily moved backward, that is, the direction of the engagement is released. We think that it is vigorous situation. For example, there may be a case where the laundry collides with the agitating body 24 from the front, and the impact force is transmitted to the clutch body 610 via the wing shaft 200. Further, there is a possibility that the rotation of the drum 22 is hindered, so that an unexpectedly large force toward the rear is transmitted to the clutch body 610.
  • the planetary carrier 440 that is, the planetary gear
  • the clutch body 610 to which the frame 440 is coupled is rotated vigorously.
  • a cone is formed in the front-rear direction of the racks 611 and 525, and the rack 611 of the clutch body 610 is easily engaged with the rack 525 of the bearing unit 500 from the rear. Therefore, when a large rotational force is generated to the clutch body 610, the large rotational force is converted into a rearward force and applied to the clutch body 610 by the shape of the cone of the racks 611, 525.
  • the pressing portion 633 of the clutch lever 630 that is in contact with the clutch body 610 receives the force via the clutch body 610.
  • Figs. 13(a) to (c) are views for explaining the operation of the clutch lever 630 in the case where the pressing portion 633 of the clutch lever 630 is strongly moved rearward in the first embodiment.
  • Figure 13 (a) is a side view of the clutch mechanism portion 600
  • Figure 13 (b) is a cross-sectional view taken along line BB' of Figure 13 (a).
  • Fig. 13 (c) is a diagram for explaining the maximum movement amount D of the fulcrum 634. Further, in Fig. 13 (a), the illustration of the clutch spring 620 is omitted.
  • the support shaft 634 of the clutch lever 630 is movably supported in the front-rear direction by the support shaft hole 643 which is long in the front-rear direction, and the support shaft 634 is pulled forward by the first spring 645, so that the pressing portion 633 and the clutch are engaged.
  • Body 610 is in contact. Therefore, when a pressing force toward the rear is temporarily applied to the pressing portion 633 of the clutch lever 630, as shown in Figs. 13(a) and (b), the first spring 645 is extended rearward by the force pushing and pulling, so that the clutch The rod 630 moves rearward. The force applied to the clutch lever 630 is thereby weakened.
  • the clutch lever 630 is coupled to the cam 652 of the clutch driving device 650, it is possible to prevent the application of the force to the cam 652.
  • the maximum movement amount D of the fulcrum 634 allowing movement is from the position Q1 of the fulcrum 634 to the fulcrum 634 hitting the fulcrum when the clutch body 610 is at the engagement position on the side of the shaft unit 500.
  • the maximum movement amount D is as shown in Fig. 11 (a), and the length L of the support shaft hole 643 in the front-rear direction is set to be larger than the rack 611 of the clutch body 610 and the rack 525 of the bearing unit 500.
  • the amount of engagement C is small.
  • the clutch body 610 and the shaft When the racks 611 and 525 of the receiving unit 500 are engaged with each other, if the clutch lever 630 is biased rearward by the clutch body 610, the clutch lever 630 moves rearward, and the movement is absorbed and weakened by the movement applied to the clutch lever 630. force. Therefore, deformation, breakage, and the like of the clutch lever 630 can be prevented. Further, it is possible to prevent breakage or the like of the clutch driving device 650 coupled to the clutch lever 630.
  • the structure for absorbing the unexpected force applied to the clutch lever 630 can be formed as a long hole by the support shaft hole 643 of the receiving fulcrum 634, and the fulcrum can be pulled by the first spring 645. 634 such a simple structure implementation.
  • the maximum movement amount D at which the support shaft 634 is allowed to move is smaller than the engagement amount C of the rack 611 of the clutch body 610 and the rack 525 of the bearing unit 500.
  • the present invention is not limited to the above.
  • the clutch mechanism unit 600 can be changed to two modified examples described below.
  • Figs. 14(a) and (b) are views showing the configuration of the clutch mechanism unit 600 of the present modification.
  • Fig. 14 (a) is a side view of the clutch mechanism portion 600
  • Fig. 14 (b) is a plan view of the clutch mechanism portion 600.
  • Figs. 15(a) and (b) are views for explaining the operation of the clutch mechanism unit 600 of the present modification.
  • the configuration of the clutch body 610 and the clutch spring 620 is removed, that is, the main configuration of the moving mechanism portion DM is different from that of the above embodiment.
  • the moving mechanism portion DM includes a clutch lever 730, a lever support portion 740, a clutch driving device 750, and a relay bar 760.
  • the clutch lever 730 includes a substantially semicircular upper rod 731 along the outer peripheral surface of the lower half of the clutch body 610, and a lower rod 732 extending obliquely downward from the lowermost portion of the upper rod 731.
  • a pressing portion 733 that comes into contact with the rear surface 612a of the flange portion 612 of the clutch body 610 and pushes the flange portion 612 forward is formed at the right and left upper end portions of the upper rod 731.
  • the clutch lever 730 is fixed to the support shaft 734 at the upper end portion of the lower lever 732.
  • Support shaft 734 runs through The left and right sides of the closer bar 730 are protruded from the clutch lever 730 to the left and right.
  • a mounting shaft 735 that extends in the left-right direction is formed at a lower end portion of the lower rod 732.
  • the lever support portion 740 supports the clutch lever 730 in a rotationally free manner.
  • the lever support portion 740 includes a bottom plate 741, and an arm piece 742 that rises from both ends of the bottom plate 741.
  • a fulcrum hole 743 is formed in the arm piece 742.
  • the fulcrum 734 of the clutch lever 730 passes through the fulcrum hole 643.
  • the clutch drive unit 750 is disposed below the clutch lever 730.
  • the clutch drive unit 750 includes a torque motor 751 and a disk-shaped cam 752 that rotates about the horizontal axis by the torque of the torque motor 751.
  • a cam shaft 753 is provided on the outer peripheral portion of the upper surface of the cam 752. The center of rotation of the cam 752 coincides with the center of the mounting shaft 735 of the lower rod 732 in the front-rear direction.
  • the relay bar 760 extends in the up and down direction, and the clutch lever 730 is coupled to the cam 752.
  • the relay bar 760 corresponds to the relay unit of the present invention.
  • the upper end portion 761 of the relay bar 760 is rotatably attached to the mounting shaft 735 of the lower rod 732, and the lower end portion 762 is rotatably attached to the cam shaft 753 of the cam 752.
  • a spring 763 is integrally formed at an intermediate position of the relay bar 760.
  • the spring 763 is a tension spring.
  • the rod support portion 740 and the clutch drive unit 750 are fixed to the bearing unit 500.
  • the cam 752 is rotated by the torque motor 751 with the cam shaft 753 at the top. Turn.
  • the spring 763 contracts.
  • the relay rod 760 moves upward as the cam shaft 753 moves, and the lower end of the lower rod 732 is pushed by the relay rod 760 and moved upward.
  • the clutch lever 730 rotates rearward about the support shaft 734, and the upper lever 731 moves rearward.
  • the pressing portion 733 of the upper rod 731 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 engaging flange portion 613 comes into engagement with the engaged concave portion 114 of the rotor 110. s position.
  • Fig. 16 is a view for explaining the operation of the clutch lever 730 when the pressing portion 733 of the clutch lever 730 is strongly moved rearward in the first embodiment. Further, the illustration of the clutch spring 620 is omitted in Fig. 16.
  • the relay bar 760 is formed with a spring 763.
  • the spring 763 of the relay bar 760 is extended upward, and the clutch lever 730 is rotated rearward. Thereby, the force applied to the clutch lever 730 is weakened. Therefore, according to the present modification, deformation, breakage, and the like of the clutch lever 730 can be prevented.
  • the clutch lever 730 is coupled to the cam 752 of the clutch driving device 750 via the relay bar 760, it is possible to prevent the application of the force to the cam 752. Therefore, according to the present modification, it is possible to prevent breakage or the like of the clutch driving device 750.
  • the structure for absorbing the unexpected force applied to the clutch lever 730 can be realized by a simple structure in which the spring 763 is formed on the relay bar 760.
  • the spring 763 is formed so as not to exceed the allowable amount of deflection even if it is further extended from the extended state in the first form by an unexpected force. Thereby, deformation, breakage, and the like of the spring 763 do not occur.
  • FIG. 17(a) and (b) and Figs. 18(a) and (b) are views showing the configuration of the clutch mechanism portion 600 of the present modification.
  • Figure 17 (a) is a side cross-sectional view of the clutch mechanism portion 600
  • Figure 17 (b) is a rear view of the clutch mechanism portion 600.
  • Figure 18 (a) is a front view of the clutch mechanism portion 600
  • Figure 18 (b) is a cross-sectional view taken along line C-C' of Figure 18 (a).
  • 19 (a) and (b) are views for explaining the operation of the clutch mechanism unit 600 of the present modification.
  • the configuration of the clutch body 610 and the clutch spring 620 is removed, that is, the main configuration of the moving mechanism portion DM is different from that of the above embodiment.
  • the moving mechanism portion DM includes a clutch lever 830, an upper support portion 840, a lower support portion 850, and a clutch The drive device 860 and the relay unit 870.
  • the clutch lever 830 includes an annular portion 831 that surrounds the outer peripheral surface of the clutch body 610, an upper rod portion 832 that extends upward from the upper end portion of the annular portion 831, and a lower rod portion that extends downward from the lower end portion of the annular portion 831. 833.
  • a pressing portion 834 that comes into contact with the rear surface 612a of the flange portion 612 of the clutch body 610 and pushes the flange portion 612 forward is formed at the center portion of the left and right circular arcs.
  • a support shaft portion 836 having a support shaft 835 extending left and right is provided at an upper end portion of the upper rod portion 832.
  • the lower rod portion 833 is provided with a cylindrical spring receiving portion 837 at a substantially central portion, and a U-shaped hook portion 838 is provided at the lower end portion.
  • the upper support portion 840 is provided with a bearing portion 841 through which the support shaft 835 of the upper rod portion 832 passes, and an upper guide portion 842 composed of a pair of ribs along both sides of the upper rod portion 832.
  • the clutch lever 830 is supported by the bearing portion 841 in such a manner as to rotate forward and backward with the support shaft 835 as a fulcrum. Further, the upper rod portion 832 is guided by the upper guide portion 842 so as not to swing in the right and left direction during rotation.
  • the lower support portion 850 is provided with a lower guide portion 851 composed of a pair of ribs that are arcuate along the central portion of both sides of the lower rod portion 833, and a lead relay portion 853 having a pulley 852.
  • the lower rod portion 833 is guided by the lower guide portion 851 so as not to swing in the right and left direction when rotated.
  • the lower guide portion 851 accommodates a first spring 854 for pushing the lower rod portion 833 rearward.
  • the first spring 854 is a compression spring.
  • the lower rod portion 833 receives the elastic force of the first spring 854 through the spring receiving portion 837.
  • the clutch drive unit 860 is disposed below the clutch lever 830.
  • the clutch drive unit 860 includes a torque motor 861 and a disk-shaped cam 862 that rotates about a horizontal axis by the torque of the torque motor 861.
  • a cam shaft 863 is provided on the outer peripheral portion of the upper surface of the cam 862.
  • the relay unit 870 extends in the up and down direction and connects the clutch lever 830 and the cam 862.
  • the relay unit 870 corresponds to the relay unit of the present invention.
  • the relay unit 870 includes a lead 871 and a second spring 872.
  • One end of the lead wire 871 is fixed to the hook portion 838 of the lower rod portion 833, and the other end is fixed to one end of the second spring 872.
  • the lead wire 871 passes through the pulley 852 of the lead relay portion 853.
  • the other end of the second spring 872 is fixed to the cam shaft 863 of the cam 862.
  • the second spring 872 is a tension spring.
  • the second spring 872 corresponds to the elastic member of the present invention. Further, the elastic force of the second spring 872 is larger than the elastic force of the first spring 854, the second spring 872 is not extended by the urging force of the first spring 854, and the clutch lever 830 does not rotate rearward.
  • the upper support portion 840, the lower support portion 850, and the clutch drive device 860 are fixed to the bearing unit 500.
  • the cam 862 is rotated by the torque motor 861 so that the cam shaft 863 is positioned at the lowest position.
  • the relay unit 870 moves downward, and the lower rod portion 833 resists the spring of the first spring 854 The force moves forward.
  • the clutch lever 830 rotates forward about the support shaft 835, and the annular portion 831 moves forward.
  • the pressing portion 834 of the annular portion 831 pushes the flange portion 612 of the clutch body 610 forward, and resists the elastic force of the clutch spring 620, whereby the clutch body 610 moves forward.
  • the pressing portion 834 of the annular portion 831 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 engaging flange portion 613 reaches the engaged recess 114 of the rotor 110. The location of the joint. Further, during the upward movement of the cam shaft 863, the second spring 872 returns to its natural length.
  • Fig. 20 is a view for explaining the operation of the clutch lever 830 in the case where the pressing portion 834 of the clutch lever 830 is strongly moved rearward in the first embodiment. Further, the illustration of the clutch spring 620 is omitted in Fig. 20.
  • the relay unit 870 is provided with a second spring 872.
  • the second spring 872 of the relay unit 870 is extended upward, and the clutch lever 830 is rotated rearward. Thereby, the force applied to the clutch lever 830 is weakened. Therefore, according to the present modification, it is possible to prevent deformation, breakage, and the like of the clutch lever 830.
  • the clutch lever 830 and the cam 862 of the clutch driving device 860 are coupled via the relay unit 870, it is possible to prevent the cam 862 from being strongly applied. Therefore, according to the present modification, it is possible to prevent breakage or the like of the clutch driving device 860.
  • the structure for absorbing the unexpected force applied to the clutch lever 830 can be realized by a simple structure in which the second spring 872 is provided on the relay unit 870.
  • the second spring 872 is further elongated even in a state of being stretched from the first form due to an unexpected force, and does not exceed the structure allowing the amount of deflection. Thereby, deformation, breakage, and the like of the second spring 872 are not generated.
  • the portion of the clutch lever 830 of the pressing portion 834 that is in contact with the clutch body 610 is formed in a ring shape, the portion can be stabilized. Therefore, in the first aspect and the second aspect, the clutch body 610 can be pressed tightly against the bearing unit 500 and the rotor 110 by the pressing portion 834. Further, the clutch lever 830 is less prone to deformation, breakage, and the like when an unexpected force is applied.
  • the clutch lever 830 is configured to extend upward and downward across the clutch body 610, and the upper end portion is a fulcrum, the lower end portion is a force point, and the fulcrum and the force point are disposed as an action point.
  • the structure of the pressing portion 834 is such that, as shown in Fig. 16 (a), the distance R1 from the support shaft 835 as the fulcrum to the pressing portion 834 as the action point can be made from the support shaft 835 to the hook portion as the force point.
  • the difference between the distance R2 of 838 increases. Therefore, the torque of the torque motor 861 that can be used to move the clutch body 610 is reduced. Further, in the first state, the pressing force of the pressing portion to the clutch body 610 by the second spring 872 can be increased.
  • the support shaft 634 is fixed to the lower rod 632 of the clutch lever 630, and the rod support portion 640 is formed with a support shaft hole 643, and the first spring 645 is fixed to the support shaft 634.
  • the support shaft 634 may be fixed to the rod portion 640, and the lower rod 632 may be formed with a support shaft hole 643, and the first spring 645 is fixed to the front surface of the lower rod 632.
  • the drum shaft 300 is fixed to the internal gear 420, and the carrier shaft 442, that is, the planetary carrier 440 is coupled to the clutch body 610.
  • the drum shaft 300 may be configured to be fixed to the planetary carrier 440.
  • the inner gear 420 is attached with a shaft portion whose front end portion 425a protrudes rearward from the drum shaft 300. 425.
  • the clutch body 610 is coupled to the shaft portion 425.
  • the clutch body 610 is coupled to the internal gear 420 via the shaft portion 425. Further, the planetary gear 430 can be changed to have only the first gear 431.
  • the planetary gear 430 rotates and revolves as the sun gear 410 rotates, and the planetary carrier 440 is a sun gear. 410 slow rotation speed rotation. Thereby, the drum shaft 300 fixed to the carrier 440 is rotated.
  • the upper rod 631 of the clutch lever 630 is formed in a semicircular shape.
  • the upper rod 631 may be annularly surrounding the clutch body 610.
  • the upper rod 731 of the clutch lever 730 of Modification 1 may be a circular shape surrounding the clutch body 610.
  • drum washing machine 1 of the above embodiment does not have a drying function, but the present invention can also be applied to a drum washing machine having a drying function, that is, a drum type washing and drying machine.

Abstract

通过抑制构成离合器机构部的离合器杆的变形、破损等,提高离合器机构部的可靠性。离合器机构部(600)包括:离合器体(610),向第一形态切换时移动到轴承单元侧,向第二形态切换时移动到转子侧;离合器杆(630),以支点为中心以旋转自由的方式设置,推压离合器体(610)使其从转子侧向轴承单元侧移动,当离合器体(610)位于与轴承单元卡合的位置时,保持与离合器体(610)接触的状态;离合器驱动装置(650),使离合器杆(630)移动;以及成为缓冲部的第一弹簧(645),在离合器体(610)位于与轴承单元卡合的位置的状态下,当向转子的方向推压的力经由离合器体(610)作用于离合器杆(630)时,向转子的方向移动离合器杆(630)使离合器杆(630)所受的力减弱。

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从洗涤到干燥连续地进 行, 也可以进行洗涤但不进行干燥。 背景技术
以往, 滚筒洗衣机在蓄水于底部的外槽内使横轴型的滚筒旋转, 通过设置 在滚筒内的挡板(baffle )将洗涤物举起并放下, 通过将洗涤物向滚筒的内周面 摔打来洗涤洗涤物(参照专利文献 1 )。
这样, 在通过挡板搅拌洗涤物的结构中, 洗涤物彼此之间 艮难互相缠绕或 全自动洗衣机相比, 作用于洗涤物的机械力容易变小, 清洗性能容易降低。
因此, 在滚筒洗衣机中, 为了提高清洗性能, 可以釆用在滚筒的后表面设 有搅拌体, 清洗或漂洗时, 使滚筒与搅拌体以不同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
在上述结构的滚筒洗衣机中, 脱水时需要使滚筒和搅拌体一体旋转。 因此, 在驱动滚筒以及搅拌体的驱动部, 设有使该驱动部的形态在第一形态和第二形 态之间切换的离合器机构部, 其中第一形态是使滚筒和搅拌体分别旋转, 第二 形态是使滚筒和搅拌体一体旋转。
例如, 考虑通过使离合器机构部包括在两个位置之间移动来进行第一形态 和第二形态之间的切换的离合器体、 以及用于使该离合器体移动的离合器杆的 结构来实现。
离合器体与用于使搅拌体旋转的旋转轴或用于使滚筒旋转的旋转轴联动。 因此, 在第一形态中, 以搅拌体或滚筒的动作为起因, 会有向离合器体施加意 料之外的大力的情况。 在这种情况下, 向与离合器体接触的离合器杆施加大力, 离合器杆就会有变形、 破损的可能。
本发明是鉴于该问题而完成的, 其目的在于提供一种能够通过抑制构成离 合器机构部的离合器杆的变形、 破损等, 来提高离合器机构部的可靠性的滚筒 洗衣机。
用于解决问题的方案
本发明的主要方式的滚筒洗衣机, 具备: 外槽, 配置在壳体内; 滚筒, 配 置在所述外槽内, 能够以水平轴或者相对于水平方向倾斜的倾斜轴为中心旋转; 挡板, 设置在所述滚筒的内周面; 旋转体, 配置在所述滚筒的后部, 在表面具 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以使所述旋 转体的旋转速度比所述滚筒的旋转速度快的方式旋转。 在此, 所述驱动部包括: 驱动马达; 第一旋转轴, 向所述旋转体传递所述驱动马达的旋转; 第二旋转轴, 向所述滚筒传递所述驱动马达的旋转; 以及离合器机构部, 使所述驱动部的形 态在第一形态和第二形态之间切换, 其中, 所述第一形态是使所述第一旋转轴 和所述第二旋转轴分别旋转, 所述第二形态是使所述第一旋转轴和所述第二旋 转轴一体旋转。 所述离合器机构部包括: 离合器体, 在向所述第一形态切换时 移动到第一位置, 在向所述第二形态切换时移动到第二位置; 离合器杆, 以支 点为中心以旋转自由的方式设置, 通过推压所述离合器体, 从而使所述离合器 体从所述第二位置向所述第一位置移动, 并且, 在所述离合器体位于所述第一 位置时, 保持与所述离合器体接触的状态; 离合器驱动装置, 用于使所述离合 器杆移动; 以及緩冲部, 用于在所述离合器体位于所述第一位置的状态下, 在 向所述第二位置的方向推压的力经由所述离合器体作用于所述离合器杆的情况 下, 使所述离合器杆向所述第二位置的方向移动, 使所述离合器杆所受的力减 弱。
根据上述的结构, 即使经由离合器体向离合器杆作用意料之外的大力, 也 能够抑制离合器杆的变形、 破损等。 因此, 能够提高离合器机构部的可靠性。
在本方式的滚筒洗衣机中, 能釆用下述结构, 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; 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, 所述太阳齿轮固定于所述第一旋转轴, 所述行星齿轮架和所述内齿轮中的一方固定于所述第二旋转轴。 在这种情况下, 所述离合器体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 的向周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, 所述离合器体在所述第一位置与在所述驱动马达旋转时不旋转的固定构 件卡合, 成为所述另一方不能旋转的状态, 由此, 切换为所述第一形态, 所述 离合器体在所述第二位置与所述驱动马达的转子卡合, 成为所述另一方与所述 驱动马达一同旋转的状态, 由此, 切换为所述第二形态。 所述离合器杆在所述 第一形态下将所述离合器体向所述固定构件侧推压。
根据上述的结构, 在第一形态中, 能够使离合器体紧密地卡合在固定构件。 在这种情况下, 由于离合器杆与离合器体紧密接触, 因此容易受到离合器体产 生的力。 但是, 离合器杆即使受到这样的力, 也很难产生变形、 破损等。
在本方式的滚筒洗衣机中, 能釆用下述结构, 即, 所述离合器机构部还具 备离合器支承部, 该离合器支承部能使所述离合器杆以所述支点为中心旋转, 并且以能在所述离合器体的移动方向上移动的方式支承所述离合器杆。 在这种 情况下, 所述緩冲部包括: 弹性构件, 以使所述离合器杆与位于所述第一位置 的所述离合器体接触的方式, 在所述支点的位置使所述离合器杆向从所述第二 位置朝向所述第一位置的方向拉动。
根据上述的结构, 离合器杆能够相对于杆支承部向离合器体的移动方向移 动, 当给离合器杆施加向第二位置的方向的力时, 通过弹性构件伸长而使离合 器杆移动, 能够减弱施加给离合器杆的力。
在做成上述结构的情况下, 还能釆用下述结构, 即, 使所述离合器支承部 允许所述离合器杆在所述移动方向的最大移动量, 比所述离合器体与所述固定 构件卡合时在所述移动方向的卡合量小。
若做成这样的结构, 则即使通过向离合器杆作用意料之外的大力, 使离合 器杆移动, 也能够防止离合器体与固定构件之间的卡合解除的情况。
在本方式的滚筒洗衣机中, 能釆用下述结构, 即, 所述离合器机构部包括 中继部, 该中继部介于所述离合器驱动装置和所述离合器杆之间, 通过所述离 合器驱动装置的动作而拉动所述离合器杆, 由此, 使所述离合器杆向推压所述 离合器体的方向转动。 在这种情况下, 所述緩冲部包括: 弹性构件, 包含于所 述中继部中, 能向拉动所述离合器杆的方向伸缩。 根据上述的结构, 当给离合器杆施加向第二位置的方向的力时, 通过中继 部的弹性构件伸长能够使离合器杆移动, 通过该移动, 能够减弱施加给离合器 杆的力。
在本方式的滚筒洗衣机中, 能釆用下述结构, 即, 所述离合器体从所述离 合器体的移动方向观察具有圆形。 在这种情况下, 所述离合器杆包括: 环状部, 包围所述离合器体; 以及至少一对推压部, 设在该环状部以推压所述离合器。
才艮据上述的结构, 由于形成推压部的部位形成为环状, 因此能够稳固该部 位, 当给推压部施加意料之外的力时, 能够进一步抑制离合器杆的变形、 破损 等。
发明效果
根据本发明, 通过抑制构成离合器机构部的离合器杆的变形、 破损等, 能 够提高离合器机构部的可靠性。
本发明的效果以及意义通过以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将本发明实施化时的一个例示, 本发明不受以下的 实施方式中所述的任何限制。 附图说明
图 1是示 ffi ^應万 尸 Γ'/ 衣同
图 2是示出实施方式所涉及的驱动单元的结构的剖视图。
图 3是示出实施方式所涉及的驱动马达的转子的结构的、 转子的主视图。 图 4是示出实施方式所涉及的翼轴、 滚筒轴以及行星齿轮机构的结构的图。 图 5是示出实施方式所涉及的轴承单元的前部单元的结构的图。
图 6是示出实施方式所涉及的轴承单元的后部单元的结构的图。
图 7是示出实施方式所涉及的轴承单元的后部单元的结构的图。
图 8是示出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 9是示出实施方式所涉及的离合器机构部的移动机构部的结构的图。 图 10是用于对实施方式所涉及的离合器机构部的动作进行说明的图。
图 11是用于对实施方式所涉及的清洗工序以及漂洗工序中驱动单元、 滚筒 以及搅拌体的动作进行说明的图。
图 12是用于对实施方式所涉及的中间脱水工序以及最终脱水工序中驱动单 元、 滚筒以及搅拌体的动作进行说明的图。
图 13是用于对实施方式所涉及的第一形态中向离合器杆的推压部产生朝向 后方的大力的情况下离合器杆的动作进行说明的图。
图 14是示出变更例 1所涉及的离合器机构部的结构的图。
图 15是用于对变更例 1所涉及的离合器机构部的动作进行说明的图。
图 16是用于对变更例 1所涉及的第一形态中向离合器杆的推压部产生朝向 后方的大力的情况下离合器杆的动作进行说明的图。
图 17是示出变更例 2所涉及的离合器机构部的结构的图。
图 18是示出变更例 2所涉及的离合器机构部的结构的图。
图 19是用于对变更例 2所涉及的离合器机构部的动作进行说明的图。
图 20是用于对变更例 2所涉及的第一形态中向离合器杆的推压部产生朝向 后方的大力的情况下离合器杆的动作进行说明的图。
图 21是用于对其它的变更例所涉及的离合器机构部的结构进行说明的图。
具体实施方式
以下 , 关于本发明的滚筒洗衣机的一实施方式的不具有干燥功能的滚筒洗 衣机, 参照附图进行说明。
图 1是示出滚筒洗衣机 1的结构的侧面剖视图。
滚筒洗衣机 1具备构成外观的壳体 10。壳体 10的前表面 10a从中央部向上 部倾斜, 倾斜的面形成有洗涤物的投入口 11。 投入口 11被开闭自由的门 12所 遮盖。
在壳体 10内, 外槽 20由多个减振器 21弹性地支承。 在外槽 20内以旋转 自由的方式配置滚筒 22。 外槽 20以及滚筒 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旋转。 外槽 20以及滚筒 22的倾斜角度可做成为 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, 与投入口 11一起通 过门 12关闭。 在滚筒 22的内周面形成有多个脱水孔 22b。 进而, 三个挡板 23 在周向上以大致相等的间隔设置在滚筒 22的内周面。
在滚筒 22的后部以旋转自由的方式配置搅拌体 24。 搅拌体 24具有大致为 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, 配置产生驱动滚筒 22以及搅拌体 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在清洗工序以及漂洗工 序时, 使滚筒 22以及搅拌体 24向相同方向以不同旋转速度旋转。 具体地说, 驱动单元 30使滚筒 22以令施加到滚筒 22内的洗涤物的离心力小于重力的旋转 速度旋转, 使搅拌体 24以比滚筒 22的旋转速度快的旋转速度旋转。 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以令施加到滚筒 22内的洗 涤物的离心力远远大于重力的旋转速度进行一体旋转。 驱动单元 30的详细结构 会在后面再进行说明。
在外槽 20的底部形成有排水口部 20b。 在排水口部 20b设置有排水阀 40。 排水阀 40与排水管 41连接。 当打开排水阀 40时存于外槽 20内的水就会通过 排水管 41向机外排出。
在壳体 10内的前方上部配置有洗涤剂盒 50。 在洗涤剂盒 50中收容洗涤剂 的洗剂容器 50a以从前方抽出自由的方式被收容。 洗涤剂盒 50通过给水管 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。 当打开给水阀 51时, 自来水从水龙头通过给水管 52、 洗涤剂盒 50以及注水管 53提供给外槽 20内。 此时, 收容在洗剂容器 50a 里的洗涤剂顺着水流提供给外槽 20内。
接着, 关于驱动单元 30的结构进行详细说明。
图 2是示出驱动单元 30的结构的剖视图。 图 3是示出驱动马达 100的转子 110的结构的转子 110的主视图。 图 4 ( a ) 以及 (b )是示出翼轴 200、 滚筒轴 300以及行星齿轮机构 400的结构的图。 图 4 ( a )是侧面剖视图, 图 4 ( b )是 图 4 ( a ) 的 A-A'剖视图。 图 5 ( a ) 以及 (b )是示出轴承单元 500的前部单元 510的结构的图, 分别为前部单元 510的主视图以及后视图。 图 6以及图 7是示 出轴^单元 500的后部单元 520的结构的图。 图 6是后部单元 520的主视图。 图 7 ( a )是后部单元 520的后视图, 图 7 ( b )是后部单元 520的后部的放大立 体图。 图 8 ( a ) 至(c )是示出离合器机构部 600的离合器体 610的结构的图, 分别为离合器体 610的主视图、 右视图以及后视图。 图 9 ( a )至(d )是示出离 合器机构部 600的移动机构部 DM的结构的图。 图 9 ( a )至( c )分别为移动机 构部 DM的后视图、 右视图以及俯视图, 图 9 ( d )是图 9 ( b ) 的 B-B'剖视图。 图 10 ( a ) 以及(b )是用于对离合器机构部 600的动作进行说明的图。 此外, 在图 8 ( a )至(c ) 中, 示出了离合器体 610已安装在行星齿轮架 440的齿轮架 轴 442的状态。
驱动单元 30包括驱动马达 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。 驱动马达 100产生用于驱动搅拌体 24以 及滚筒 22的转矩。 翼轴 200通过驱动马达 100的转矩而旋转, 并向搅拌体 24 传递该旋转。 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, 即驱动马达 100的转子 110的旋转减速并向滚筒轴 300传递。 滚筒 轴 300以通过行星齿轮机构 400减速后的旋转速度与翼轴 200同轴旋转, 并向 滚筒 22传递该旋转。 滚筒轴 300相当于本发明的第二旋转轴。 轴承单元 500能 够以旋转自由的方式支承翼轴 200以及滚筒轴 300。离合器机构部 600使驱动部 30的形态在第一形态和第二形态之间切换, 其中, 所述第一形态是能使搅拌体 24即翼轴 200以与驱动马达 100的旋转速度相等的旋转速度旋转,使滚筒 22即 滚筒轴 300以通过行星齿轮机构 400减速后的旋转速度旋转, 所述第二形态是 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 驱动马达 100相等的旋转速度进行一体旋转。
参照图 2以及图 3 ,驱动马达 100是外转子型的 DC无刷马达,具备转子 110 和定子 120。 转子 110形成为有底的圆筒状, 在其内周面, 永久磁铁 111遍及整 周地排列。 如图 3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的外周形成有环 状的被卡合凹部 114。 被卡合凹部 114的外周部具有遍及整周的凹凸部 114a。
定子 120在外周部具有线圈 121。当从未作图示的控制电路向定子 120的线 圈 121提供驱动电流时, 转子 110旋转。 在定子 120的上方和左右三处, 以大 致 120度的间隔形成有螺孔 122。各螺孔 122具有从定子 120的中心起在径向上 相同的距离。 此外, 在图 2中, 仅图示出上方的一个螺孔 122。
参照图 2以及图 4, 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包括前轴部 300a、 后轴部 300b、 以及设在前轴部 300a和后 轴部 300b之间并且比前轴部 300a以及后轴部 300b更向外侧膨出的收容部 300c。 在收容部 300c收容有行星齿轮机构 400。前轴部 300a以前部比后部内径大的方 式形成, 在内径大的大径部 300d配置有第一滑动轴 301。 同样地, 在大径部 300d上夹着后述的限制环在第一滑动轴承 301 的前方配置有机械密封 302。 第 一滑动轴承 301以及机械密封 302从前方插入大径部 300d, 通过压入等固定方 法与滚筒轴 300固定。 此外, 滚筒轴 300在前后方向上分割, 由两个构件即前 构件 Ml以及后构件 M2构成, 以使行星齿轮机构 400能收容于收容部 300c。
行星齿轮机构 400包括: 太阳齿轮 410; 环状的内齿轮 420, 包围太阳齿轮 410; 多组行星齿轮 430, 介于太阳齿轮 410和内齿轮 420之间; 以及行星齿轮 架 440, 通过支轴 441以旋转自由的方式保持这些行星齿轮 430。
一组行星齿轮 430具有第一齿轮 431和第二齿轮 432。第一齿轮 431与第二 齿轮 432的两个齿轮彼此啮合, 并且第一齿轮 431与太阳齿轮 410啮合, 第二 齿轮 432与内齿轮 420啮合。 行星齿轮架 440包括向后方延伸的齿轮架轴 442。 齿轮架轴 442与滚筒轴 300同轴, 内部形成为中空以使翼轴 200插入。 齿轮架 轴 442 以从前端部到根部的部位比根的部位内径大的方式形成, 在内径大的大 径部 442a配置有第二滑动轴 443。 从滚筒轴 300向后方突出的齿轮架轴 442 的前端部 442b, 在外周面形成有齿条 442c。
在翼轴 200的后端部形成有圆环状的限制凸缘 201。翼轴 200从后方插入滚 筒轴 300内。 在插入的翼轴 200的前端部固定有环状的限制环 202。 限制环 202 与第一滑动轴 ? 301以及机械密封 302同样从前方插入大径部 300d, 通过压入 等固定方法与翼轴 200固定。限制环 202经由第一垫圈 203与第一滑动轴承 301 接触, 经由第二垫圈 204与机械密封 302接触。 限制凸缘 201与齿轮架轴 442 的后端卡合, 通过限制环 202经由第一垫圈 203与第一滑动轴承 301卡合, 由 此限制翼轴 200向前后方向的移动。
插入滚筒轴 300的内部的翼轴 200,其外周面在第一滑动轴承 301以及第二 滑动轴承 443之间滑动。 由此, 翼轴 200在滚筒轴 300内顺利地旋转。 此外, 通过机械密封 302能防止水向滚筒轴 300和翼轴 200之间侵入。 进而, 翼轴 200 旋转时, 限制环 202在第一垫圈 203以及第二垫圈 204之间滑动。 因此, 能防 止因限制环 202滑动而产生的第一滑动轴承 301以及机械密封 302的磨耗。
在翼轴 200的中间部位固定有太阳齿轮 410。 如图 4 ( b ) 所示, 在内齿轮 420的外周面的多个位置形成有向前后方向延伸的键部 421 , 在滚筒轴 300的内 周面形成有与键部 421对应的键槽部 303。 通过键部 421与键槽部 303卡合, 滚 筒轴 300和内齿轮 420在周向固定。 进而, 翼轴 200的后端部从齿轮架轴 442 向后方突出, 固定于转子 110的轴套孔 113。
当翼轴 200伴随着转子 110的旋转而旋转时, 太阳齿轮 410旋转。 当行星 齿轮架 440处于以不旋转的方式固定的状态下, 由于行星齿轮 430不能公转, 因此伴随着太阳齿轮 410的旋转仅进行自转。 即, 第一齿轮 431与太阳齿轮 410 反向旋转, 第二齿轮 432与太阳齿轮 410同向旋转。 伴随着第二齿轮 432的旋 转, 内齿轮 420与第二齿轮 432同向, 即与太阳齿轮 410同向旋转。 由此, 与 内齿轮 420固定的滚筒轴 300旋转。 此外, 各齿轮 410、 420、 431、 432以及滚 筒轴 300的旋转方向在图 4 ( b ) 中用箭头示出。 以比翼轴 200低的旋转速度旋转。 这样, 由于翼轴 200的旋转速度被减速并传 递到滚筒轴 300,所以传递到滚筒轴 300的转矩变得比从驱动马达 100传递到翼 轴 200的转矩更大。
参照图 2、 图 5、 图 6以及图 7, 轴承单元 500包括前部单元 510以及后部 单元 520。 轴承单元 500相当于本发明的固定构件。
在前部单元 510在中央部设有圆筒状的前轴 ? 部 511。在前轴 ? 部 511的前 侧配置有机械密封 512, 在后侧配置有第一滚动轴 ? 513。 在前部单元 510的后 面侧在前轴承部 511 的周围形成有被嵌合凹部 514。 被嵌合凹部 514的外周面 514a具有圆形, 该圆的中心与配置在前轴 ? 部 511 的状态的第一滚动轴 513 的中心 P1—致。
在前部单元 510的外周部在上下左右四处形成有安装孔 515。 进而, 在前部 单元 510的外周部在下部形成有两个安装轴套 516。在安装轴套 516形成有安装 孔 516a。
在后部单元 520的中央部在后面侧设有具有比滚筒轴 300的收容部 300c的 外径稍微大一点的内径并覆盖收容部 300c的圆筒状的覆盖部 521 ,在覆盖部 521 的后方, 设有具有比收容部 300c的外径小的内径的圆筒状的后轴 ? 部 522。 在 后轴承部 522在前侧配置有第二滚动轴承 523 ,在第二滚动轴承 523的后方设有 弹簧冲击板 524。 在后轴承部 522的后端部在内表面遍及整周形成有齿条 525。
在后部单元 520在后面侧形成有三个安装轴套 526。 在定子 120的与螺孔 122对应的上方和左右三个位置分别形成各个安装轴套 526。 在安装轴套 526形 成有安装孔 526a。各个安装孔 526a具有从配置在后轴部 522的状态的第二滚动 轴承 523的中心 P2起在径向上相同的距离。
在后部单元 520的中央部在前面侧形成有环状的嵌合筋 527。嵌合筋 527的 外周面 527a具有圆形, 该圆的中心与第二滚动轴承 523的中心 P2—致。 嵌合 筋 527的外周面 527a的直径与被嵌合凹部 514的外周面 514a的直径相等。
在后部单元 520的外周部形成有螺孔 528。 在前部单元 510的与安装孔 515 对应的上下左右四个位置分别形成各个螺孔 528。
在内包翼轴 200以及行星齿轮机构 400的滚筒轴 300设置于前部单元 510 的状态下, 前部单元 510与后部单元 520结合。 此时, 嵌合筋 527嵌入到被嵌 合凹部 514。 在嵌合状态下, 嵌合筋 527的外周面 527a与被嵌合凹部 514的外 周面 514a接触。 这样, 前部单元 510以及后部单元 520通过嵌合筋 527的外周 面 527a以及被嵌合凹部 514的外周面 514a产生的 插嵌合而结合。 螺丝 530 穿过螺孔 528被安装孔 515堵住。 由此, 前部单元 510与后部单元 520固定。 这样, 在轴 7 单元 500的内部配置滚筒轴 300。
滚筒轴 300的前轴部 300a的外周面由第一滚动轴 513接受,后轴部 300b 的外周面由第二滚动轴承 523接受。 由此, 滚筒轴 300在轴承单元 500内顺利 地旋转。 另外, 通过在前轴 ? 部 511的前端部设置机械密封 512, 能防止水向轴 承单元 500和滚筒轴 300之间侵入。
驱动马达 100的定子 120与后部单元 520的安装轴套 526固定。 此时, 螺 丝 540穿过螺孔 122被安装孔 526a堵住。
轴承单元 500通过螺丝固定等固定方法固定在外槽 20的后表面。 在驱动单 元 30已安装在外槽 20的状态下, 翼轴 200以及滚筒轴 300面对着外槽 20的内 部。 滚筒 22与滚筒轴 300固定, 搅拌体 24与翼轴 200固定。
参照图 2以及图 8至图 10, 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、 以及安装板 660。 离合器弹簧 620、 离合器杆 630、 杆支承部 640、 离合器驱动装置 650以及安装 板 660构成使离合器体 610向前后方向移动的移动机构部 DM。
离合器体 610具有大致圆盘形状。 在离合器体 610的前端部在外周面形成 有环状的齿条 611。齿条 611以与后部单元 520的后端部的齿条 525卡合的方式 形成。 另外, 在离合器体 610的外周面, 在齿条 611的后方形成有凸缘部 612。 并且, 在离合器体 610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, 在外周部遍及整周具有凹凸部 613a。 当卡合凸缘部 613插入被卡合凹部 114时, 凹凸部 613a、 114a彼此卡合。
在离合器体 610的前表面在中央部形成有供齿轮架轴 442插入的轴孔 614。 在轴孔 614的内周面形成有齿条 614a。 齿条 614a与齿轮架轴 442的齿条 442c 卡合。 由此, 离合器体 610呈相对于齿轮架轴 442向前后方向的移动被允许, 并且向周向的转动被限制的状态。 另外, 在离合器体 610 的前表面在轴孔 614 的外侧形成有环状的收容槽 615。 收容槽 615具有达到后端部的深度。如图 2所 示, 在收容槽 615中收容有离合器弹簧 620。 离合器弹簧 620的一端与后部单元 520的弹簧冲击板 524接触, 另一端与收容槽 615的底面接触。
离合器杆 630包括沿着离合器体 610的下半部的外周面的大致半圆形的上 部杆 631、 以及从上部杆 631的最下部向下方延伸的下部杆 632。 在上部杆 631 的左右上端部形成有与离合器体 610的凸缘部 612的后表面 612a接触并将凸缘 部 612向前方推的推压部 633。 此外, 在图 9 ( c )上为了方便说明, 画有离合 器体 610。
成为旋转时的支点的支轴 634与离合器杆 630固定。 支轴 634贯穿离合器 杆 630的左右, 其两端部从离合器杆 630向左右探出。
杆支承部 640以转动自由的方式支承离合器杆 630。杆支承部 640包括底板 641、 以及从底板 641的两端立起的臂片 642。 臂片 642形成有支轴孔 643。 支 轴孔 643 为前后两端部呈圆孤的前后方向上长的孔, 并且上下方向的宽度也比 支轴 634的直径大。 支轴 634穿过支轴孔 643。
在杆支承部 640在支轴孔 643的前方设有第一安装轴 644。在支轴 634和第 一安装轴 644之间在左右方向上并排地安装有两个第一弹簧 645。 第一弹簧 645 相当于本发明的弹性构件。 安装时, 第一弹簧 645穿过形成于离合器杆 630的 第一插入孔 635。 第一弹簧 645为拉伸弹簧。 在已安装的状态下, 第一弹簧 645 伸长将支轴 634向前方拉动。 离合器杆 630能以支轴 634为中心向前后方向转 动。
在杆支承部 640在第一安装轴 644的下方设有第二安装轴 646。 另一方面, 在离合器杆 630设有第三安装轴 636。在第二安装轴 646和第三安装轴 636之间 安装有第二弹簧 647。 第二弹簧 647为拉伸弹簧。 安装时, 第二弹簧 647穿过形 成于离合器杆 630的第二插入孔 637。 在已安装的状态下, 第二弹簧 647伸长, 通过第二弹簧 647的弹力, 离合器杆 630的下部杆 632的下端向朝前方移动的 方向拉动。
离合器驱动装置 650包括转矩马达 651、以及通过转矩马达 651的转矩绕水 平轴旋转的圆盘状的凸轮 652。 凸轮 652的上表面与下部杆 632的下端接触。 凸 轮 652的上表面包括: 设置在一端侧的高度高的第一接触面 652a、 设置在另一 端侧的高度低的第二接触面 652b、 以及将第一接触面 652a和第二接触面 652b 之间连结的倾斜面 652c。
杆支承部 640以及离合器驱动装置 650通过螺丝固定等固定方法与安装板 660固定。 安装板 660通过螺丝与前部单元 510的安装轴套 516固定。
当驱动单元 30的形态从第二形态切换到第一形态时, 如图 10 ( a )所示, 通过转矩马达 651 , 凸轮 652以第一接触面 652a位于上方、 第二接触面 652b位 于下方的方式旋转。 随着凸轮 652旋转, 下部杆 632的下端由倾斜面 652c以及 第一接触面 652a依次推压向后方移动。 离合器杆 630以支轴 634为中心向前方 旋转, 上部杆 631向前方移动。 上部杆 631的推压部 633将离合器体 610的凸 缘部 612向前方推压, 离合器体 610抗拒离合器弹簧 620的弹力向前方移动。
在本实施方式中, 如图 10 ( a ) 中用单点划线所示, 在离合器杆 630通过与 第一接触面 652a的接触向最后方的位置移动的稍微近前的位置, 离合器体 610 的齿条 611到达与轴承单元 500的齿条 525卡合的位置。 由于离合器体 610不 会向比该卡合位置更前方处移动, 因此当离合器杆 630从近前的位置向最后方 的位置移动时, 如图 10 ( a )所示,推压部 633不移动而下部杆 632向后方移动, 并且推压至支轴孔 643的前侧圆弧的支轴 634向后方稍 移动。 在该状态下, 由于离合器杆 630通过第一弹簧 645 以下部杆 632的下端为支点向前方转动的 方式被拉动, 因此如图 10 ( a ) 的空心箭头所示, 处于卡合位置的离合器体 610 由按压部 633施以推压力。 通过做成这样的结构, 能够使离合器体 610的齿条 611与轴承单元 500的齿条 525紧密卡合。
另一方面, 在驱动单元 30的形态从第一形态切换到第二形态的情况下, 如 图 10 ( b ) 所示, 通过转矩马达 651 , 凸轮 652以第二接触面 652b位于上方、 第一接触面 652a位于下方的方式旋转。 随着凸轮 652旋转, 下部杆 632的下端 通过第二弹簧 647的弹力, 依次沿着倾斜面 652c以及第二接触面 652b并同时 向前方移动。 离合器杆 630以支轴 634为中心向后方旋转, 上部杆 631向后方 移动。 上部杆 631的推压部 633从离合器体 610的凸缘部 612离开, 离合器体 610通过离合器弹簧 620的弹力向后方移动,卡合凸缘部 613到达与转子 110的 被卡合凹部 114卡合的位置。
滚筒洗衣机 1 进行各种运转程序的洗涤运转。 洗涤运转包括清洗工序、 中 间脱水工序、 漂洗工序以及最终脱水工序。
图 11 ( a ) 以及 (b )是用于对清洗工序以及漂洗工序中的驱动单元 30、 滚 筒 22以及搅拌体 24的动作进行说明的图。 图 12 ( a ) 以及 (b )是用于对中间 脱水工序以及最终脱水工序中的驱动单元 30、 滚筒 22以及搅拌体 24的动作进 行说明的图。
在清洗工序以及漂洗工序中, 驱动单元 30的形态切换为第一形态。 通过切 换为第一形态, 如图 10 ( a )所示, 当离合器体 610向前方移动时, 如图 11 ( a ) 所示, 离合器体 610的齿条 611与轴承单元 500的齿条 525卡合。 由此, 由于 离合器体 610相对于轴承单元 500向周向的转动被限制, 成为不可转动的状态, 因此行星齿轮机构 400的齿轮架轴 442,即行星齿轮架 440成为以不可旋转的方 式固定的状态。 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旋转, 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旋转。 伴随着翼轴 200的旋转, 在行星齿轮机构 400 中太阳齿轮 410旋转。 如上所述, 由于行星齿轮架 440处于固定状态, 因此行 星齿轮 430的第一齿轮 431以及第二齿轮 432分别与太阳齿轮 410同向以及反 向旋转, 内齿轮 420与太阳齿轮 410同向旋转。 由此, 与内齿轮 420固定的滚 筒轴 300旋转。 由于通过行星齿轮机构 400减速, 因此滚筒轴 300以比翼轴 200 慢的旋转速度与翼轴 200同向旋转,与滚筒轴 300固定的滚筒 22以比搅拌体 24 慢的旋转速度与搅拌体 24同向旋转。 换句话说, 搅拌体 24以比滚筒 22快的旋 转速度与滚筒 22同向旋转。 此外, 转子 110的旋转速度以及行星齿轮机构 400 的减速比可以适当设定, 以便使得使搅拌体 24以能够以不损伤的程度来摩擦或 搅拌洗涤物的旋转速度旋转, 并且滚筒 22的旋转速度成为使作用于滚筒 22内 的洗涤物的离心力变得小于重力的旋转速度。
在清洗工序以及漂洗工序中, 在外槽内蓄水至未到投入口 11下缘的规定的 水位的状态下, 驱动马达 100交替地进行右旋转以及左旋转。 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地进行右 旋转以及左旋转。 滚筒 22内的洗涤物通过由挡板 23举起并落下而被摔打到滚 筒 22的内周面。进而,在滚筒 22的后部,洗涤物与旋转的搅拌体 24的叶片 24a 接触, 洗涤物与叶片 24a摩擦或洗涤物通过叶片 24a来搅拌。 由此, 洗涤物被清 洗或漂洗。
接着, 在中间脱水工序以及最终脱水工序中, 驱动单元 30的形态切换为第 二形态。 通过切换为第二形态, 如图 10 ( b )所示, 当离合器体 610向后方移动 时, 如图 12 ( a )所示, 离合器体 610的卡合凸缘部 613嵌入转子 110的被卡合 凹部 114,卡合凸缘部 613的凹凸部 613a与被卡合凹部 114的凹凸部 114a卡合。 此外, 即使在卡合凸缘部 613嵌入被卡合凹部 114的状态下, 离合器弹簧 620 也维持收缩的状态, 通过离合器弹簧 620的弹力使卡合凸缘部 613推压向被卡 合凹部 114。 当卡合凸缘部 613与被卡合凹部 114卡合时, 推压部 633呈从离合 器体 610离开的状态。
当卡合凸缘部 613与被卡合凹部 114卡合时, 离合器体 610相对于转子 110 向周向的转动被限制, 离合器体 610成为可与转子 110—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, 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相等的旋转速度旋转, 与内齿轮 420固定的滚 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, 如图 12 ( a ) 以及 (b )用单点划线所示, 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和搅拌体 24—体旋转。 此外, 离合器弹簧 620也与 离合器体 610—起旋转。
在中间脱水工序以及最终脱水工序中, 转子 110, 即滚筒 22以及搅拌体 24 以使作用于滚筒 22内的洗涤物的离心力远远大于重力的旋转速度旋转。 通过离 心力的作用洗涤物被压到滚筒 22的内周面上脱水。
然后, 在离合器机构部 600中, 离合器体 610与翼轴 200以及滚筒轴 300 联动。 因此, 在第一形态中, 当离合器体 610的齿条 611与轴承单元 500的齿 条 525卡合时, 会发生向离合器体 610暂时向后方、 即解除卡合的方向施加意 想之外的大力的情况。 例如, 可能产生洗涤物从前方与搅拌体 24碰撞, 其冲击 力经由翼轴 200向离合器体 610传递的情况。 另外, 也可能产生由于阻碍滚筒 22的旋转, 因而向离合器体 610传递朝后方的意料之外的大力的情况。 即, 当 由于滚筒 22内的洗涤物的活动等原因而阻碍滚筒 22的旋转, 使滚筒轴 300变 得难以旋转时, 随着翼轴 200的旋转, 产生使行星齿轮架 440, 即与行星齿轮架 440连结的离合器体 610旋转的大力。 在这些齿条 611、 525的前后方向形成有 锥形物, 使离合器体 610的齿条 611容易从后方与轴承单元 500的齿条 525卡 合。 因此, 当对离合器体 610产生大旋转力时, 通过齿条 611、 525的锥形物形 状, 该大旋转力变换为向后方的大力并施加给离合器体 610。
在第一形态中, 当向离合器体 610施加意料之外的大力时, 与离合器体 610 接触的离合器杆 630的推压部 633经由离合器体 610承受该大力。
图 13 ( a ) 至(c )是用于对第一形态中在离合器杆 630的推压部 633产生 向后方的大力的情况下离合器杆 630的动作进行说明的图。 图 13 ( a )是离合器 机构部 600的侧面图, 图 13 ( b )是图 13 ( a ) 的 B-B'剖视图。 图 13 ( c )是用 于对支轴 634的最大移动量 D进行说明的图。 此外, 在图 13 ( a )中, 省略了离 合器弹簧 620的图示。
如上所述, 离合器杆 630的支轴 634通过在前后方向上长的支轴孔 643在 前后方向可移动地支承, 并且支轴 634通过第一弹簧 645向前方拉动, 使推压 部 633与离合器体 610接触。 因此, 当对离合器杆 630的推压部 633暂时施加 向后方的大力时, 如图 13 ( a ) 以及(b )所示, 通过该力推拉, 第一弹簧 645 向后方伸长, 使离合器杆 630向后方移动。 由此减弱施加于离合器杆 630的力。 另外, 离合器杆 630虽然与离合器驱动装置 650的凸轮 652连结, 但也可以防 止向凸轮 652施加大力。
此外, 如图 13 ( c )所示, 支轴 634允许移动的最大移动量 D是从离合器体 610处于轴 单元 500侧的卡合位置时支轴 634的位置 Q1到支轴 634碰到支轴 孔 643后侧的圆孤位置 Q2的距离。 在本实施方式中, 该最大移动量 D如图 11 ( a )所示, 支轴孔 643前后方向的长度 L定为比离合器体 610的齿条 611与轴 承单元 500的齿条 525之间的卡合量 C小。
<实施方式的效果〉
如以上说明的, 根据本实施方式, 在第一形态中, 当离合器体 610 以及轴 承单元 500的齿条 611、 525彼此卡合时, 若经由离合器体 610对离合器杆 630 施加向后方的大力, 则离合器杆 630向后方移动, 且通过该移动吸收并减弱施 加给离合器杆 630的力。 因此, 能够防止离合器杆 630的变形、 破损等。 另夕卜, 能够防止与离合器杆 630连结的离合器驱动装置 650的破损等。
另外, 根据本实施方式, 用于吸收对离合器杆 630施加的意料之外的力的 结构, 能够通过将承接支轴 634的支轴孔 643制为长孔, 并由第一弹簧 645拉 动支轴 634这样的简单的结构实现。
进而, 根据本实施方式, 使支轴 634允许移动的最大移动量 D比离合器体 610的齿条 611与轴承单元 500的齿条 525的卡合量 C小。 由此,通过用于吸收 意料之外的力的离合器杆 630向后方的移动, 能够防止齿条 611与齿条 525的 卡合被解除。
以上, 虽然关于本发明的实施方式进行了说明, 但是本发明不受任何上述 例如, 能够将离合器机构部 600变更为以下说明的两个变更例。
<离合器机构部的变更例 1 >
图 14 ( a ) 以及 (b )是示出本变更例的离合器机构部 600的结构的图。 图 14 ( a )是离合器机构部 600的侧面图, 图 14 ( b )是离合器机构部 600的俯视 图。 图 15 ( a ) 以及 (b )是用于对本变更例的离合器机构部 600的动作进行说 明的图。
此外, 在图 14 ( a ) 中省略了离合器弹簧 620的图示, 在图 14 ( b ) 中省略 了离合器体 610以及离合器弹簧 620的图示。
本变更例的离合器机构部 600中, 除去离合器体 610 以及离合器弹簧 620 的结构, 即, 移动机构部 DM的主要结构与上述实施方式不同。
移动机构部 DM包括离合器杆 730、 杆支承部 740、 离合器驱动装置 750、 以及中继棒 760。
离合器杆 730包括沿着离合器体 610下半部的外周面的大致半圆形的上部 杆 731、 以及从上部杆 731的最下部向前斜下方向延伸的下部杆 732。 在上部杆 731的左右上端部形成有与离合器体 610的凸缘部 612的后表面 612a接触并将 凸缘部 612向前方推的推压部 733。
在离合器杆 730在下部杆 732的上端部与支轴 734固定。 支轴 734贯穿离 合器杆 730的左右, 其两端部从离合器杆 730向左右探出。 在下部杆 732的下 端部形成有向左右方向延伸的安装轴 735。
杆支承部 740以转动自由的方式支承离合器杆 730。杆支承部 740包括底板 741、 以及从底板 741的两端立起的臂片 742。 支轴孔 743形成于臂片 742。 离 合器杆 730的支轴 734穿过支轴孔 643。
离合器驱动装置 750配置于离合器杆 730的下方。 离合器驱动装置 750包 括转矩马达 751、 以及通过转矩马达 751 的转矩绕水平轴旋转的圆盘状的凸轮 752。 在凸轮 752的上表面在外周部设有凸轮轴 753。 凸轮 752的旋转中心与下 部杆 732的安装轴 735的中心在前后方向上一致。
中继棒 760向上下方向延伸, 离合器杆 730与凸轮 752连结。 中继棒 760 相当于本发明的中继部。 中继棒 760的上端部 761 以可旋转的方式安装于下部 杆 732的安装轴 735 ,下端部 762以可旋转的方式安装于凸轮 752的凸轮轴 753。 在中继棒 760的中间位置一体形成弹簧 763。 弹簧 763为拉伸弹簧。
杆支承部 740以及离合器驱动装置 750与轴承单元 500固定。
驱动单元 30的形态从第二形态切换到第一形态的情况下, 如图 15 ( a ) 所 示, 通过转矩马达 751 , 凸轮 752以凸轮轴 753位于最下方的方式旋转。 随着凸 轮 752旋转, 下部杆 732的下端通过中继棒 760向下方拉动。 离合器杆 730以 支轴 734为中心向前方旋转, 并且上部杆 731向前方移动。 上部杆 731的推压 部 733将离合器体 610的凸缘部 612向前方推, 离合器体 610抗拒离合器弹簧 620的弹力向前方移动。
在本变更例中, 如在图 15 ( a ) 中用单点划线所示, 当凸轮轴 753移动到中 间的规定位置时, 离合器体 610到达齿条 611与轴承单元 500的齿条 525卡合 的位置。 此时, 中继棒 760的弹簧 763处于自然长度的状态。 由于离合器体 610 不会向比该卡合位置更前方移动, 因此当凸轮轴 753从规定位置向最下方的位 置移动时, 如图 15 ( a )所示, 弹簧 763向下方伸长。 这样的话, 由于离合器杆 730通过弹簧 763以向前方转动的方式拉动, 因此如图 15 ( a )的空心箭头所示, 对处于卡合位置的离合器体 610施加来自推压部 733的推压力推压。 由此, 能 够使离合器体 610的齿条 611与轴承单元 500的齿条 525紧密卡合。
另一方面, 驱动单元 30的形态从第一形态切换为第二形态的情况下, 如图 15 ( b ) 所示, 通过转矩马达 751 , 凸轮 752以凸轮轴 753位于最上方的方式旋 转。 当凸轮 752旋转, 凸轮轴 753向上方移动时, 首先, 弹簧 763会收缩。 当 弹簧 763返回到自然长度时, 其后随着凸轮轴 753移动, 中继棒 760向上方移 动, 下部杆 732的下端由中继棒 760推压并向上方移动。 离合器杆 730以支轴 734为中心向后方旋转, 上部杆 731向后方移动。 上部杆 731的推压部 733从离 合器体 610的凸缘部 612离开, 离合器体 610通过离合器弹簧 620的弹力向后 方移动, 卡合凸缘部 613到达与转子 110的被卡合凹部 114卡合的位置。
图 16是用于对第一形态中在离合器杆 730的推压部 733产生向后方的大力 的情况下离合器杆 730的动作进行说明的图。 此外, 在图 16中省略了离合器弹 簧 620的图示。
如上所述, 中继棒 760形成有弹簧 763。 当对离合器杆 730的推压部 633暂 时施加向后方的大力时, 如图 16所示, 中继棒 760的弹簧 763向上方伸长, 离 合器杆 730向后方旋转。 由此, 施加于离合器杆 730的力减弱。 因此, 根据本 变更例, 能够防止离合器杆 730的变形、 破损等。 此外, 虽然离合器杆 730与 离合器驱动装置 750的凸轮 752经由中继棒 760连结,但是也能防止向凸轮 752 施加大力。 因此, 根据本变更例, 也能够防止离合器驱动装置 750的破损等。
另外, 根据本变更例, 用于吸收对离合器杆 730施加的意料之外的力的结 构, 能够通过在中继棒 760形成弹簧 763这样简单的结构实现。
此外, 弹簧 763做成即使通过意料之外的力在第一形态中从伸长状态更进 一步伸长, 也不会超出允许挠曲量的结构。 由此, 不会产生弹簧 763 的变形、 破损等。
<离合器机构部的变更例 2 >
图 17 ( a ) 以及(b )和图 18 ( a ) 以及(b )是示出本变更例的离合器机 构部 600的结构的图。 图 17 ( a )为离合器机构部 600的侧面剖视图, 图 17 ( b ) 为离合器机构部 600的后视图。 图 18 ( a ) 为离合器机构部 600的主视图, 图 18 ( b )为图 18 ( a ) 的 C-C'剖视图。 图 19 ( a ) 以及(b )是用于对本变更例的 离合器机构部 600的动作进行说明的图。
此外, 在图 17 ( a )至图 19 ( b ) 中省略了离合器弹簧 620的图示。
本变更例的离合器机构部 600中, 除去离合器体 610以及离合器弹簧 620 的结构, 即, 移动机构部 DM的主要结构与上述实施方式不同。
移动机构部 DM包括离合器杆 830、 上支承部 840、 下支承部 850、 离合器 驱动装置 860、 以及中继单元 870。
离合器杆 830包括包围离合器体 610的外周面的环状部 831、 从环状部 831 的上端部向上方延伸的上杆部 832、以及从环状部 831的下端部向下方延伸的下 杆部 833。 在环状部 831在左右圆弧的中央部形成有与离合器体 610的凸缘部 612的后表面 612a接触并将凸缘部 612向前方推的推压部 834。 在上杆部 832 的上端部设置具有向左右延伸的支轴 835的支轴部 836。在下杆部 833在大致中 央部设有圆筒状的弹簧承受部 837, 在下端部设有 U字形的挂钩部 838。
在上支承部 840设有上杆部 832的支轴 835贯通的轴承部 841、以及由沿着 上杆部 832的两侧的一对筋构成的上引导部 842。离合器杆 830以支轴 835为支 点以向前后转动的方式通过轴承部 841支承。 进而, 上杆部 832以旋转时不向 左右方向摆动的方式由上引导部 842引导。
在下支承部 850设置有由沿着下杆部 833的两侧的中央部为圆弧状的一对 筋构成的下引导部 851、 以及具有滑轮 852的引线中继部 853。 下杆部 833以旋 转时不向左右方向摆动的方式由下引导部 851 引导。 在下引导部 851容纳用于 将下杆部 833向后方推的第一弹簧 854。 第一弹簧 854为压缩弹簧。 下杆部 833 通过弹簧承受部 837承受第一弹簧 854的弹力。
离合器驱动装置 860配置于离合器杆 830的下方。 离合器驱动装置 860包 括转矩马达 861、 以及通过转矩马达 861 的转矩绕水平轴旋转的圆盘状的凸轮 862。 在凸轮 862上表面在外周部设有凸轮轴 863。
中继单元 870向上下方向延伸并连结离合器杆 830和凸轮 862。 中继单元 870相当于本发明的中继部。 中继单元 870包括引线 871以及第二弹簧 872。 引 线 871的一端与下杆部 833的挂钩部 838固定, 另一端与第二弹簧 872的一端 固定。 引线 871穿过引线中继部 853的滑轮 852。 第二弹簧 872的另一端与凸轮 862的凸轮轴 863固定。 第二弹簧 872为拉伸弹簧。 第二弹簧 872相当于本发明 的弹性构件。 此外, 第二弹簧 872的弹力比第一弹簧 854的弹力大, 第二弹簧 872不会因第一弹簧 854的推压力而伸长, 离合器杆 830不会向后方旋转。
上支承部 840、下支承部 850以及离合器驱动装置 860与轴承单元 500固定。 驱动单元 30的形态从第二形态切换为第一形态的情况下, 如图 19 ( a ) 所 示, 通过转矩马达 861 , 凸轮 862以使凸轮轴 863位于最下方的方式旋转。 随着 凸轮 862旋转, 中继单元 870向下方移动, 下杆部 833抗拒第一弹簧 854的弹 力向前方移动。 离合器杆 830以支轴 835为中心向前方旋转, 环状部 831向前 方移动。 环状部 831的推压部 834将离合器体 610的凸缘部 612向前方推, 抗 拒离合器弹簧 620的弹力 , 从而离合器体 610向前方移动。
在本变更例中, 如图 19 ( a ) 中用单点划线所示, 当凸轮轴 863移动到比最 下方的位置稍微近前的位置时, 离合器体 610到达齿条 611与轴承单元 500的 齿条 525卡合的位置。 此时, 中继单元 870的第二弹簧 872处于自然长度的状 态。 由于离合器体 610不向比该卡合位置更前方移动, 因此当凸轮轴 863从近 前的位置移动到最下方的位置时,如图 19 ( a )所示, 第二弹簧 872向下方伸长。 这样, 由于离合器杆 830由第二弹簧 872以向前方转动的方式拉动, 因此如图 19 ( a ) 的空心箭头所示, 处于卡合位置的离合器体 610由推压部 834施以推压 力。 由此, 能够使离合器体 610的齿条 611与轴承单元 500的齿条 525紧密卡 合。
另一方面, 驱动单元 30的形态从第一形态切换为第二形态的情况下, 如图 19 ( b ) 所示, 通过转矩马达 861 , 凸轮 862以使凸轮轴 863位于最上方的方式 旋转。 当凸轮 862旋转并且凸轮轴 863向上方移动时, 下杆部 833由第一弹簧 854推压向后方移动。 离合器杆 830以支轴 835为中心向后方旋转, 环状部 831 向后方移动。 环状部 831的推压部 834从离合器体 610的凸缘部 612离开, 离 合器体 610通过离合器弹簧 620的弹力向后方移动, 卡合凸缘部 613到达与转 子 110的被卡合凹部 114卡合的位置。 此外, 在凸轮轴 863向上方移动的过程 中, 第二弹簧 872恢复到自然长度。
图 20是用于对第一形态中在离合器杆 830的推压部 834产生向后方的大力 的情况下离合器杆 830的动作进行说明的图。 此外, 在图 20中省略了离合器弹 簧 620的图示。
如上所述, 在中继单元 870设有第二弹簧 872。 当向离合器杆 830的推压部 834暂时施加向后方的大力时, 如图 20所示, 中继单元 870的第二弹簧 872向 上方伸长, 离合器杆 830向后方旋转。 由此, 施加给离合器杆 830的力减弱。 因此, 根据本变更例, 能够防止离合器杆 830 的变形、 破损等。 另外, 虽然离 合器杆 830与离合器驱动装置 860的凸轮 862经由中继单元 870连结, 但是也 能防止对凸轮 862施加大力。 因此, 根据本变更例, 也能够防止离合器驱动装 置 860的破损等。 另外, 根据本变更例, 用于吸收对离合器杆 830施加的意料之外的力的结 构, 可通过在中继单元 870上设置第二弹簧 872这样简单的结构实现。
此外, 做成第二弹簧 872 即使因意料之外的力而从第一形态下伸长的状态 进一步伸长, 也不会超出允许挠曲量的结构。 由此, 不会产生第二弹簧 872 的 变形、 破损等。
进而, 在本变更例中, 由于设置在与离合器体 610接触的推压部 834的离 合器杆 830 的部位形成为环状, 因此能够使该部位稳固。 因此, 在第一形态以 及第二形态中, 能够通过推压部 834使离合器体 610紧密地压向轴承单元 500 以及转子 110。 此外, 当受到意料之外的力时, 离合器杆 830不容易产生变形、 破损等。
进而, 根据本变更例, 由于离合器杆 830为夹着离合器体 610向上方以及 下方延伸的结构, 并且做成以上端部为支点、 以下端部为力点、 在支点和力点 的中间配置作为作用点的推压部 834的结构, 因此如图 16 ( a )所示, 能够使从 作为支点的支轴 835到作为作用点的推压部 834的距离 R1与从支轴 835到作为 力点的挂钩部 838的距离 R2之差增大。 因此, 能够使用于移动离合器体 610的 转矩马达 861的转矩缩小。 此外, 在第一状态中, 能够使第二弹簧 872产生的、 推压部对离合器体 610的推压力增大。
<其它的变更例 >
在上述实施方式中, 支轴 634与离合器杆 630的下部杆 632固定, 并且杆 支承部 640形成有支轴孔 643 , 第一弹簧 645与支轴 634固定。 但是, 如图 21 所示, 也可以 成支轴 634与杆支 ? 部 640固定, 并且下部杆 632形成有支轴 孔 643 , 第一弹簧 645与下部杆 632的前表面固定的结构。 即使这样的结构, 在 第一形态中, 当对离合器杆 630作用向后方的大力时, 通过离合器杆 630会向 后方棘避, 从而能够防止离合器杆 630的变形、 破损等。
在上述实施方式中, 滚筒轴 300与内齿轮 420固定, 并且齿轮架轴 442、 即 行星齿轮架 440与离合器体 610连结。 由此, 在第一形态中, 行星齿轮架 440 通过离合器体 610固定的状态下, 当翼轴 200旋转时, 行星齿轮 430随着太阳 齿轮 410的旋转进行自转, 内齿轮 420以比太阳齿轮 410慢的旋转速度旋转。 然而, 如图 22所示, 滚筒轴 300也可以做成固定于行星齿轮架 440的结构。 在 这种情况下, 在内齿轮 420安装有前端部 425a从滚筒轴 300向后方探出的轴部 425。 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能变更为只具有第一齿轮 431。 在第一形 态中, 在内齿轮 420通过离合器体 610固定的状态下, 当翼轴 200旋转时, 随 着太阳齿轮 410的旋转, 行星齿轮 430进行自转以及公转, 行星齿轮架 440以 比太阳齿轮 410慢的旋转速度旋转。 由此, 与行星齿轮架 440固定的滚筒轴 300 旋转。
进而, 在上述实施方式中, 离合器杆 630的上部杆 631形成为半圆形。 然 而, 与上述变更例 2的离合器杆 830的环状部 831相同, 上部杆 631也可以是 包围离合器体 610的圆环形。 同样, 变更例 1的离合器杆 730的上部杆 731也 可以是包围离合器体 610的圆环形。
进而, 上述实施方式的滚筒洗衣机 1 不具备干燥功能, 但本发明也可以应 用于具备干燥功能的滚筒洗衣机、 即滚筒式洗涤干燥机。
此外, 本发明的实施方式在权利要求书示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; 120 定子; 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; 431 第一齿轮; 432 第二齿轮; 440 行星齿轮架; 442 齿轮架轴; 500 轴承单元(固定构件); 600 离合器机构 部; 610 离合器体; 620 离合器弹簧; 630 离合器杆; 634 支轴; 633 推 压部; 640 杆支承部; 643 支轴孔; 645 第一弹簧(弹性构件); 650 离合 器驱动装置; 660 安装板; DM 移动机构部; 730 离合器杆; 740 杆支承 部; 750 离合器驱动装置; 760 中继棒(中继部); 763 弹簧(弹性构件); 830 离合器杆; 831 环状部; 840 上支承部; 850 下支承部; 860 离合器 驱动装置; 870 中继单元(中继部); 872 第二弹簧(弹性构件)。

Claims

权 利 要 求 书
1. 一种滚筒洗衣机, 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, 能够以水平轴或者相对于水平方向倾斜的倾斜 轴为中心旋转;
挡板, 设置在所述滚筒的内周面;
旋转体, 配置在所述滚筒的后部, 在表面具有与洗涤物接触的突状部; 以 及 的旋转速度快的方式旋转,
所述驱动部包括:
驱动马达;
第一旋转轴, 向所述旋转体传递所述驱动马达的旋转;
第二旋转轴, 向所述滚筒传递所述驱动马达的旋转; 以及
离合器机构部, 使所述驱动部的形态在第一形态和第二形态之间切换, 其 中, 所述第一形态是使所述第一旋转轴和所述第二旋转轴分别旋转, 所述第二 形态是使所述第一旋转轴和所述第二旋转轴一体旋转,
所述离合器机构部包括:
离合器体, 在向所述第一形态切换时移动到第一位置, 在向所述第二形态 切换时移动到第二位置;
离合器杆, 以支点为中心以旋转自由的方式设置, 通过推压所述离合器体, 从而使所述离合器体从所述第二位置向所述第一位置移动, 并且, 在所述离合 器体位于所述第一位置时, 保持与所述离合器体接触的状态;
离合器驱动装置, 用于使所述离合器杆移动; 以及
緩冲部, 用于在所述离合器体位于所述第一位置的状态下, 在向所述第二 位置的方向推压的力经由所述离合器体作用于所述离合器杆的情况下, 使所述 离合器杆向所述第二位置的方向移动, 使所述离合器杆所受的力减弱。
2. 根据权利要求 1所述的滚筒洗衣机, 其特征在于,
所述驱动部还包括行星齿轮机构, 该行星齿轮机构具有: 太阳齿轮; 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; 行星齿轮架, 以旋转自由的方式保持这些行星齿轮, 其中, 所述太阳齿 轮固定于所述第一旋转轴, 所述行星齿轮架和所述内齿轮中的一方固定于所述 第二旋转轴,
所述离合器体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 一方向周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,
所述离合器体在所述第一位置与在所述驱动马达旋转时不旋转的固定构件 卡合, 成为所述另一方不能旋转的状态, 由此, 切换为所述第一形态, 所述离 合器体在所述第二位置与所述驱动马达的转子卡合, 成为所述另一方与所述驱 动马达一起旋转的状态, 由此, 切换为所述第二形态,
所述离合器杆在所述第一形态下将所述离合器体向所述固定构件侧推压。
3. 根据权利要求 1或 2所述的滚筒洗衣机, 其特征在于,
所述离合器机构部还具备: 离合器支承部, 能以使所述离合器杆以所述支 点为中心旋转并且能在所述离合器体的移动方向上移动的方式支承所述离合器 杆,
所述緩冲部包括: 弹性构件, 以使所述离合器杆与位于所述第一位置的所 述离合器体接触的方式, 在所述支点的位置, 使所述离合器杆向从所述第二位 置朝向所述第一位置的方向拉动。
4. 根据权利要求 3所述的滚筒洗衣机, 其特征在于,
使所述离合器支承部允许所述离合器杆在所述移动方向的最大移动量, 比 所述离合器体与所述固定构件卡合时在所述移动方向的卡合量小。
5. 根据权利要求 1或者 2所述的滚筒洗衣机, 其特征在于,
所述离合器机构部还包括: 中继部, 介于所述离合器驱动装置和所述离合 器杆之间, 通过所述离合器驱动装置的动作拉动所述离合器杆, 由此, 使所述 离合器杆向推压所述离合器体的方向转动,
所述緩冲部包括: 弹性构件, 包含于所述中继部中, 能向拉动所述离合器 杆的方向伸缩。
6. 根据权利要求 1至 5的任一项所述的滚筒洗衣机, 其特征在于, 所述离合器体从所述离合器体的移动方向观察具有圆形,
所述离合器杆包括: 环状部, 包围所述离合器体; 以及至少一对推压部, 设在该环状部以推压所述离合器
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US20220074109A1 (en) * 2020-09-04 2022-03-10 Lg Electronics Inc. Apparatus for treating laundry

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JP6397218B2 (ja) 2018-09-26
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CN105229217A (zh) 2016-01-06

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