WO2015161579A1 - 滚筒洗衣机 - Google Patents

滚筒洗衣机 Download PDF

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Publication number
WO2015161579A1
WO2015161579A1 PCT/CN2014/083632 CN2014083632W WO2015161579A1 WO 2015161579 A1 WO2015161579 A1 WO 2015161579A1 CN 2014083632 W CN2014083632 W CN 2014083632W WO 2015161579 A1 WO2015161579 A1 WO 2015161579A1
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WO
WIPO (PCT)
Prior art keywords
shaft
drum
rotor
clutch
rotation
Prior art date
Application number
PCT/CN2014/083632
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
田中启之
竹中卓雄
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 CN201480002630.0A priority Critical patent/CN105229216B/zh
Publication of WO2015161579A1 publication Critical patent/WO2015161579A1/zh

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 

Definitions

  • the present invention relates to a drum washing machine.
  • the drum washing machine may be continuously performed from washing to drying, or may be washed without drying.
  • a drum washing machine rotates a drum of a horizontal axis type in an outer tank in which water is stored in the bottom, and the laundry is lifted and dropped by a baffle provided in the drum, and the laundry is dropped to the inner circumference of the drum.
  • the laundry is washed in the surface (refer to Patent Document 1).
  • the drum washing machine is less likely to have a smaller mechanical force acting on the laundry than the fully automatic washing machine that rotates the vibrating machine in the washing and dewatering tank to wash the laundry, and the washing performance is likely to be low.
  • a structure in which a stirring body is provided behind the drum and the drum and the stirring body are rotated at different rotational speeds during washing or rinsing can be employed.
  • Patent Document 1 Japanese Laid-Open Patent Publication No. 2013-240577
  • the driving unit that drives the drum and the agitating body is increased in size by adding a speed reducing mechanism or the like, and the size is easily increased. Therefore, in order to suppress the reduction in the size of the outer tub and the drum, it is necessary to suppress an increase in the size of the driving portion as much as possible.
  • the present invention has been made in view of the above problems, and an object thereof is to provide a drum washing machine capable of achieving an improvement in cleaning performance and suppressing an increase in size of a driving portion.
  • a drum washing machine includes: an outer tank disposed in a casing; and a drum disposed in the outer tank and rotatable about a horizontal axis or an inclined axis inclined with respect to a horizontal direction; a baffle disposed on an inner circumferential 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 at a rotation speed ratio of the rotating body The drum and the rotating body are rotated in such a manner that the rotation speed of the drum is fast.
  • the driving unit includes: a driving motor; the first rotating shaft is coupled to the rotating body, and rotates in accordance with rotation of the driving motor rotor; and the speed reducing mechanism decelerates rotation of the rotor; the second rotation a shaft coupled to the drum and enclosing the first rotating shaft and the speed reducing mechanism; and a bearing unit having a first bearing and a second bearing disposed to sandwich the speed reducing mechanism, through the first bearings and The second bearing supports the second rotating shaft in a rotationally free manner.
  • the speed reduction mechanism has a sun gear that rotates with rotation of the drive motor rotor, an annular internal gear that surrounds the sun gear, and a plurality of planet gears between the sun gear and the internal gear And the planet carrier, which holds these planet gears in a rotationally free manner.
  • the second rotating shaft is fixed to the internal gear and rotates with rotation of the internal gear
  • the planetary carrier includes: a shaft portion coaxial with the second rotating shaft and a front end portion from the first The two rotating shafts protrude from one side of the rotor.
  • the drive portion further includes a clutch mechanism portion.
  • the clutch mechanism portion is configured to switch a shape of the driving portion between the first form and the second form in relation to a front end portion of the shaft portion protruding from the second rotating shaft, wherein the first form Yes, by the state in which the shaft portion is not rotatable, the first rotating shaft and the second rotating shaft are slowed by a speed reduction ratio of the second rotating shaft to a speed reduction ratio generated by the speed reducing mechanism Rotating in a manner of a rotation speed of the first rotating shaft, wherein the second form is a state in which the shaft portion rotates together with the rotor, thereby causing the first rotating shaft, the speed reducing mechanism, and The second rotating shaft integrally rotates at a rotational speed equal to a rotational speed of the rotor.
  • the space generated between the first bearing and the second bearing is utilized as the arrangement space of the speed reducing mechanism, and thus can be in the axial direction of the second rotating shaft.
  • the size of the drive portion is reduced.
  • the outer tub and the drum can be made larger in the front-rear direction, so that the washing capacity can be increased.
  • the second rotating shaft is coupled to the internal gear, and the front end portion of the shaft portion provided in the planetary carrier protrudes beyond the second rotating shaft, and the protruding front end portion is associated with the clutch mechanism portion.
  • the operation of the speed reduction mechanism is switched, and the form of the drive unit is switched between the first form and the second form.
  • the first form and the second form can be satisfactorily performed. Switch between forms.
  • the reduction ratio of the rotor to the second rotating shaft can be set, and a wide range of reduction ratios can be set.
  • the torque generated by the driving motor when the drum and the rotating body are driven can be reduced, and the driving motor can be reduced. Power consumption.
  • the planetary gear includes: a first gear that meshes with the sun gear, and a reverse rotation with the sun gear; and a second gear, and the The first gear meshes with the internal gear, and rotates in the same direction as the sun gear to rotate the internal gear in the same direction as the sun gear.
  • the driving portion when the driving portion is configured to reduce the rotation of the second rotating shaft by fixing the second rotating shaft to the internal gear, the second rotating shaft can be rotated in the same direction as the first rotating shaft.
  • the stirring force by the rotating body can be applied in the same direction as the rotation direction of the drum, the stirring force of the laundry in the drum can be improved.
  • the clutch mechanism portion may include a clutch body that is fitted into the front end portion, and movement in the axial direction of the shaft portion with respect to the front end portion is allowed. And the rotation in the circumferential direction of the shaft portion is restricted; and the movement mechanism portion moves the clutch body in the axial direction.
  • a first engaging portion and a second engaging portion are respectively provided at an end portion of the clutch body on the bearing unit side and an end portion on the rotor side, and the bearing is A first engaged portion and a second engaged portion are respectively disposed at the unit and the rotor.
  • the clutch body is opposite to the bearing unit when the clutch body is moved to the bearing unit side by the moving mechanism portion and the first engaging portion is engaged with the first engaged portion
  • the rotation in the circumferential direction is restricted, and the shaft portion is in a state in which it cannot rotate.
  • the clutch body moves to the rotor side by the moving mechanism portion and the second engaging portion engages with the second engaged portion, the clutch body is oriented with respect to the rotor
  • the circumferential rotation is limited and the shaft can rotate with the rotor.
  • the clutch mechanism portion that switches between the first mode and the second mode by the relationship with the planetary carrier, that is, the planetary carrier, can be specifically realized.
  • a configuration may be employed in which the moving mechanism portion includes an elastic member interposed between the clutch body and the bearing unit to cause the clutch body to pass an elastic force
  • the rotor moves on one side to engage the second engaging portion with the second engaged portion; and the pressing member pushes the clutch body to the bearing unit by pushing the clutch body One side Moving, and contacting the clutch body in a state where the first engaging portion is engaged with the first engaged portion, and the second engaging portion and the second engaged portion are stuck In the closed state, it is separated from the clutch body.
  • the clutch body is moved by the elastic force of the elastic member, whereby the second engagement portion is engaged with the second engaged portion, and when the clutch body is rotated together with the rotor by the engagement, the push is performed.
  • the pressing member is in a state of being separated from the clutch body. Therefore, the rotation of the rotor and the clutch body is not hindered by the contact of the pressing member with the clutch body.
  • 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 of the embodiment.
  • FIG 3 is a front view showing a structure of a rotor of a drive motor according to an embodiment and a rotor.
  • FIG. 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 structure 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 unit of the clutch mechanism unit according to the embodiment.
  • FIG. 10 is a view for explaining an operation of a clutch mechanism unit according to an embodiment.
  • FIG. 11 is a view for explaining operations of the drive unit, the drum, and the agitating body in the washing step and the rinsing step in the embodiment.
  • FIG. 12 is a view for explaining operations of the drive unit, the drum, and the agitating body in the intermediate dehydration step and the final dehydration step in the embodiment.
  • Fig. 13 is a view showing a configuration of a drive unit compared with the embodiment.
  • FIG. 1 is a side cross-sectional view showing the structure of a drum washing machine 1.
  • the drum washing machine 1 has a casing 10 that constitutes an appearance.
  • the front surface 10a of the casing 10 is inclined upward from the central portion, and an inlet 11 for washing is formed on the inclined surface.
  • the inlet 11 is covered by a door 12 that is open and closed.
  • the outer tank 20 is elastically supported by a plurality of dampers 21.
  • a drum 22 is rotatably disposed in the outer tub 20.
  • the outer groove 20 and the rear side of the drum 22 are inclined downward with respect to the horizontal direction. Thereby, the drum 22 rotates centering on the inclination axis inclined with respect to the horizontal direction.
  • the inclination angle of the outer tub 20 and the drum 22 can 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 are opposed to the input port 11, and are closed together with the input port 11 by the door 12.
  • three baffles 23 are provided on the inner circumferential surface of the drum 22 at substantially equal intervals in the circumferential direction.
  • a stirring body 24 that is free to rotate is disposed.
  • the agitating body 24 has a substantially disc shape.
  • a plurality of blades 24a radially extending from the center portion are formed on the surface of the agitating body 24.
  • 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 in the washing process and the rinsing process. Specifically, the drive unit 30 rotates the drum 22 at a rotational speed that causes the centrifugal force applied to the laundry in the drum 22 to be smaller than the gravity, and rotates the agitating body 24 at a rotational speed faster than the rotational speed of the drum 22.
  • the drive unit 30 integrally rotates the drum 22 and the agitating body 24 at a rotational speed at which the centrifugal force applied to the laundry in the drum 22 becomes much larger than the gravity.
  • the detailed structure of the drive unit 30 will be described later.
  • a drain port portion 20b is formed at the bottom of the outer tub 20.
  • a drain valve 40 is provided in the drain port portion 20b. The drain valve 40 is connected to the drain pipe 41. When the drain valve 40 is opened, the water remaining in the outer tank 20 is discharged outside the machine through the drain pipe 41.
  • a detergent box 50 is disposed in the front upper portion of the casing 10.
  • the detergent container 50a which accommodates a detergent is accommodated so that it may isolate
  • 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 a water injection pipe 53.
  • the water supply valve 51 is opened, tap water is supplied from the faucet into the outer tub 20 through the water supply pipe 52, the detergent box 50, and the water injection pipe 53. At this time, the detergent stored in the detergent container 50a is supplied into 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 showing the structure of the rotor 110 of the drive motor 100.
  • 4(a) and 4(b) are views showing the configurations of the wing shaft 200, the drum shaft 300, and the planetary gear mechanism 400.
  • 4(a) is a side cross-sectional view
  • FIG. 4(b) is a cross-sectional view taken along line A-A' of FIG. 4(a).
  • 5(a) and 5(b) are views showing the configuration 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.
  • FIG. 6 and 7 are views showing the configuration of the rear unit 520 of the bearing unit 500.
  • FIG. 6 is a front view of the rear unit 520.
  • 7(a) is a rear view of the rear unit 520, and
  • FIG. 7(b) is an enlarged perspective view of the rear portion of the rear unit 520.
  • 8(a) to 8(c) are views showing a configuration of a 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.
  • 9(a) to 9(c) are diagrams showing the configuration of the movement mechanism portion DM of the clutch mechanism portion 600, and are a rear view, a right side view, and a plan view, respectively, of the movement mechanism portion DM.
  • FIGS. 8(a) to (c) are diagrams for explaining the operation of the clutch mechanism unit 600.
  • a state in which the clutch body 610 has been mounted on the gear shaft 442 of the carrier 440 is shown in FIGS. 8(a) to (c).
  • 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 to transmit the rotation to the agitating body 24.
  • the wing shaft 200 corresponds to the first rotating shaft of the present invention.
  • the planetary gear mechanism 400 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 planetary gear mechanism 400 corresponds to the speed reduction mechanism of the present invention.
  • the drum shaft 300 rotates coaxially with the wing shaft 200 at a rotational speed decelerated by the planetary gear mechanism 400, and transmits the rotation to the drum 22.
  • the drum shaft 300 corresponds to the second rotating shaft of the present invention.
  • the bearing unit 500 supports the wing shaft 200 and the drum shaft 300 in a rotationally free manner.
  • the clutch mechanism unit 600 can switch between the first mode and the second mode, wherein the first embodiment is such that the agitating body, that is, the wing shaft 200, can be equal to the rotational speed of the drive motor 10.
  • the rotation speed is rotated, and the drum 22, that is, the drum shaft 300, is rotated at a rotation speed decelerated by the planetary gear mechanism 400.
  • the second form is such that the agitating body 24 and the drum 22, that is, the wing shaft 200 and the drum shaft 300.
  • the planetary gear mechanism 400 is integrally rotated at a rotation speed equal to that of the drive motor 100.
  • the drive motor 100 is an outer rotor type DC brushless motor including a rotor 110 and a stator 120.
  • the rotor 110 is formed in a bottomed cylindrical shape, and the permanent magnets 111 are arranged on the inner peripheral surface thereof over the entire circumference.
  • a circular boss portion 112 is formed at a central portion of the rotor 110.
  • a boss hole 113 for fixing the wing shaft 200 is formed, and an annular engaged recess 114 is formed on the outer circumference of the boss hole 113.
  • the outer peripheral portion of the engaged recessed portion 114 has the uneven portion 114a over the entire circumference.
  • the engaged recess 114 corresponds to the second engaged portion of the present invention.
  • the stator 120 has a coil 121 at the outer peripheral portion.
  • the screw holes 122 are formed at intervals of 120 degrees at three places above and below the stator 120.
  • Each of the screw holes 122 has an equal distance from the center of the stator 120 in the radial direction. Further, only one of the screw holes 122 above is illustrated in FIG.
  • 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 that is provided between the front shaft portion 300a and the rear shaft portion 300b and that bulges 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 shaft portion 300a is formed such that the inner diameter of the front portion is larger than that of the rear portion, and the first sliding bearing 301 is disposed in the large diameter portion 300d having a large inner diameter.
  • the mechanical seal 302 is disposed in front of the first sliding bearing 301 so as to sandwich a restriction ring to be described later.
  • 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, a front member M1 and a 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, an annular internal gear 420 surrounding the sun gear 410, a plurality of sets of planetary gears 430 interposed between the sun gear 410 and the internal gear 420, and these planetary gears 430 are held by the support shaft 441. It is a freely rotating planet carrier 440.
  • 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 corresponds to the shaft portion of the present invention.
  • the carrier shaft 442 is coaxial with the drum shaft 300, in order to The wing shaft 200 is inserted and the inside is formed to be hollow.
  • 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 root portion, and the second sliding bearing 443 is disposed at the large diameter portion 442a having a large inner diameter.
  • a rack 442c is formed on the outer peripheral surface of the front end portion 442b of the carrier shaft 442 that protrudes rearward from the drum shaft 300.
  • 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 confinement ring 202 is in contact with the first sliding bearing 301 through the first washer 203 and is in contact with the mechanical seal 302 through the second washer 204.
  • the restricting flange 201 is engaged with the rear end of the carrier shaft 442, and the restricting ring 202 is engaged with the first sliding bearing 301 through the first washer 203, thereby restricting the movement of the wing shaft 200 in the forward and backward directions.
  • the outer peripheral surface of the wing shaft 200 inserted into the inside of the drum shaft 300 slides 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, intrusion of water between the drum shaft 300 and the wing shaft 200 is prevented 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 is prevented.
  • the assemblability can be improved.
  • the sun gear 410 is fixed at a portion in the middle of the wing shaft 200.
  • the key portion 421 extending in the front-rear direction is formed at a plurality of locations on the outer circumferential surface of the inner gear 420, and the key groove portion 303 corresponding to the key portion 421 is formed on the inner circumferential surface of the drum shaft 300.
  • 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 protrudes rearward from the carrier shaft 442 and is fixed to the boss hole 113 of the rotor 110.
  • the sun gear 410 rotates.
  • the planet carrier 440 is fixed so that it cannot rotate, the planetary gear 430 cannot revolve, so the sun gear 410 can only rotate with rotation. That is, the first gear 431 rotates counterclockwise with the sun gear 410, and the second gear 432 rotates in the same direction as the sun gear 410.
  • the internal gear 420 rotates in the same direction as the second gear 432, that is, in the same direction as the sun gear 410.
  • the drum shaft 300 fixed to the internal gear 420 is rotated. Further, the rotational directions of the respective gears 410, 420, 431, 432 and the drum shaft 300 are indicated by arrows in FIG. 4(b).
  • the roller The shaft 300 rotates at a lower rotational speed than the wing shaft 200.
  • the rotational speed of the wing shaft 200 is transmitted to the drum shaft 300 by deceleration, the torque transmitted to the drum shaft 300 becomes larger than the torque transmitted from the drive motor 100 to the wing shaft 200.
  • the bearing unit 500 includes a front unit 510 and a rear unit 520.
  • a cylindrical front bearing portion 511 is provided at the center portion of the front unit 510.
  • a mechanical seal 512 is disposed on the front side
  • a first rolling bearing 513 is disposed on the rear side.
  • the first rolling bearing 513 corresponds to the first bearing of the present invention.
  • a fitting recess 514 is formed around the front bearing portion 511.
  • the outer peripheral surface 514a of the fitting recessed portion 514 has a circular shape, and the center of the circle coincides with the center P1 of the first rolling bearing 513 disposed in the state of the front bearing portion 511.
  • mounting holes 515 are formed at four positions of up, down, left, and right. Further, at the outer peripheral portion of the front unit 510, two mounting bosses 516 are formed at the lower portion. A mounting hole 516a is formed in the mounting boss 516.
  • the central portion of the rear unit 520 has an inner diameter slightly larger than the outer diameter of the accommodating portion 300c of the drum shaft 300 on the rear side, and a cylindrical covering portion 521 that covers the accommodating portion 300c is provided, and is provided behind the covering portion 521.
  • a cylindrical rear bearing portion 522 having an inner diameter smaller than the outer diameter of the accommodating portion 300c.
  • a second rolling bearing 523 is disposed on the front side of the rear bearing portion 522, and a spring receiving plate 524 is disposed behind the second rolling bearing 523.
  • the second rolling bearing 523 is equivalent to the second bearing of the present invention.
  • a rack 525 is formed over the entire circumference on the inner surface of the rear end portion of the rear bearing portion 522. The rack 525 corresponds to the first engaged portion of the present invention.
  • Each of the mounting bosses 526 is formed at three positions above and to the left and right corresponding to the screw holes 122 of the stator 120.
  • a mounting hole 526a is formed in the mounting boss 526.
  • Each of the attachment 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 bearing portion 522.
  • An annular fitting rib 527 is formed on the front surface side at 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 an outer peripheral portion of the rear unit 520.
  • Each of the screw holes 528 is formed at four positions of up, down, left, and right corresponding to the mounting holes 515 of the front unit 510.
  • the front unit 510 is coupled to the rear unit 520.
  • the fitting rib 527 is embedded and embedded.
  • the outer circumferential surface 527a of the fitting rib 527 is in contact with the outer circumferential surface 514a of the fitting recess 514.
  • the front unit 510 and the rear unit 520 are coupled to each other by the insertion and fitting of the outer circumferential surface 527a of the fitting rib 527 and the outer circumferential surface 514a of the fitting recess 514.
  • the screw 530 penetrates the screw hole 528 and is blocked by the mounting hole 515. Thereby, the front unit 510 and the rear unit 520 are fixed.
  • the drum shaft 300 is disposed inside the bearing unit 500.
  • the planetary gear mechanism 400 is housed in the accommodating portion 300c of the drum shaft 300, and is disposed in a space generated between the first rolling bearing 513 and the second rolling bearing 523.
  • first rolling bearing 513 and the second rolling bearing 523 In order to support the load generated by the heavy-duty drum 22 by the drum shaft 300, it is necessary to provide a certain distance between the first rolling bearing 513 and the second rolling bearing 523 in the bearing unit 500.
  • the configuration of the planetary gear mechanism 400 is disposed behind the two rolling bearings 513 and 523. The size of the drive unit 30 can be reduced in the axial direction of the drum shaft 300.
  • the outer peripheral surface of the front shaft portion 300a of the drum shaft 300 is received by the first rolling bearing 513, and 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 bearing portion 511, intrusion of water between the bearing unit 500 and the drum shaft 300 is prevented.
  • 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 penetrates the screw hole 122 and is blocked by the mounting hole 526a.
  • the bearing unit 500 is fixed to the rear 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 inside of the groove 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 640, a clutch driving device 650, and a mounting plate 660.
  • the clutch spring 620, the clutch lever 630, the lever support 640, the clutch drive device 650, and the mounting plate 660 constitute a moving mechanism portion DM that moves the clutch body 610 in the forward and backward directions.
  • the clutch body 610 has a substantially disc 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 formed to be engaged with the rack 525 at the rear end portion of the rear unit 520.
  • the rack 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 rack 611.
  • an annular engagement flange portion 613 is formed at the rear end portion of the clutch body 610.
  • the engaging flange portion 613 has the same shape as the engaged recessed portion 114 of the rotor 110, and is external.
  • the peripheral portion has the uneven portion 613a throughout the entire circumference. When the engaging flange portion 613 is inserted into the engaged recessed portion 114, the uneven portions 613a and 114a are engaged with each other.
  • the engagement flange portion 613 corresponds to the second engagement portion of the present invention.
  • 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 circumferential surface of the shaft hole 614.
  • the rack 614a is engaged with the rack 442c of the carrier shaft 442.
  • the clutch body 610 is allowed to move in the front-rear direction with respect to the carrier shaft 442, and the movement in the circumferential direction is restricted.
  • an annular housing groove 615 is formed outside the shaft hole 614.
  • the receiving groove 615 has a depth reaching the rear end portion.
  • the clutch spring 620 is accommodated in the accommodation groove 615.
  • the clutch spring 620 corresponds to the elastic member of the present invention.
  • One end of the clutch spring 620 is in contact with the spring receiving plate 524 of the rear unit 520, and the other end is in contact with the bottom surface of the housing 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 from the lowermost portion of the upper rod 631 to the lower side.
  • a pressing portion 633 that comes into contact with the rear surface 612a of the flange portion 612 of the clutch body 610 and presses the flange portion 612 forward is formed at the upper and lower end portions of the upper rod 631.
  • the pressing portion 633 corresponds to the pressing member of the present invention.
  • the clutch body 610 is depicted for convenience of explanation.
  • the support shaft 634 is fixed to the clutch lever 630.
  • the support shaft 634 passes through the clutch lever 630 left and right, and both end portions thereof are passed out from the left and right of the clutch lever 630.
  • the lever support 640 supports the clutch lever 630 to freely rotate.
  • the lever support 640 includes a bottom plate 641, and an arm piece 642 that rises from both ends of the bottom plate 641.
  • a fulcrum hole 643 is formed in the arm piece 642.
  • the support shaft 634 passes through the support shaft hole 643. Thereby, the clutch lever 630 can be rotated in the front-rear direction about the support shaft 634.
  • Spring 644 is interposed between clutch lever 630 and lever support 640.
  • One end of the spring 644 is fixed to the mounting shaft 645 of the lever support 640, and the other end is inserted through an insertion hole 635 provided in the clutch lever 630, and is fixed to the mounting shaft 636 provided on the clutch lever 630 in the same manner as the insertion hole 635.
  • the spring In a state where the clutch mechanism portion 600 is mounted, the spring is in a stretched state, and the lower end of the lower lever 632 of the clutch lever 630 is pulled in a direction in which the spring 644 is moved forward.
  • 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.
  • 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 between the first contact surface 652a and the second contact surface 652b.
  • the inclined faces 652c are connected.
  • the rod support 640 and the clutch driving device 650 are fixed to the mounting plate 660 by a fixing method such as screwing.
  • the mounting plate 660 is screwed to the mounting boss 516 of the front unit 510.
  • the rotating cam 652 causes the first contact surface 652a to be positioned above and the second contact surface 652b to be positioned by the torque motor 651.
  • the lower end of the lower rod 632 is sequentially pressed by the inclined surface 652c and the first contact surface 652a and moved rearward.
  • the clutch lever 630 rotates forward about the support shaft 634, and the upper lever 631 moves forward.
  • the pressing portion 633 of the upper rod 631 pushes the flange portion 612 of the clutch body 610 forward, and the clutch 610 moves forward in response to the elastic force of the clutch spring 620.
  • the cam 652 is rotated by the torque motor 651 so that the second contact surface 652b is positioned upward, first.
  • the contact surface 652a is located below.
  • 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, and the clutch body 610 is moved rearward by the elastic force of the clutch spring 620.
  • the drum washing machine 1 performs a washing operation of various operation programs.
  • the washing operation includes a washing process, an intermediate dewatering process, a rinsing process, and a final dewatering process.
  • FIGS. 11(a) and 11(b) are diagrams for explaining the operations of the drive unit 30, the drum 22, and the agitating body 24 in the washing step and the rinsing step.
  • 12(a) and 12(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 in the washing process and the rinsing process.
  • the first configuration as shown in FIG. 10(a)
  • the clutch body 610 is moved forward, as shown in FIG. 11(a)
  • the rack 611 of the clutch body 610 and the rack 525 of the bearing unit 500 are as shown in FIG. Engage.
  • the clutch body 610 is in a state in which the rotation of the bearing unit 500 in the circumferential direction is restricted and cannot be rotated. Therefore, the carrier shaft 442 of the planetary gear mechanism 400, that is, the carrier 440 is fixed and cannot be moved. .
  • 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 are respectively aligned with the sun gear 410.
  • the internal gear 420 rotates in the same direction as the sun gear 410. Thereby, the drum shaft 300 fixed to the inner 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 and agitation than the stirring body 24.
  • the body 24 rotates in the same direction.
  • 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 generated by the planetary gear mechanism 400 can be appropriately set such 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 is made.
  • the centrifugal force that causes the laundry to act on the drum 22 is less than the gravity.
  • the drive motor 100 alternately performs the right rotation and the left rotation in a state where the water in the outer tank 20 reaches a predetermined water level that has not reached the lower edge of the inlet port 11.
  • 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. Further, in the rear portion of the drum 22, the laundry comes into contact with the blades 24a of the rotating agitating body 24, and the laundry either 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 clutch body 610 is moved rearward, as shown in FIG. 11(b)
  • the engagement flange portion 613 of the clutch body 610 is fitted into the rotor 110.
  • the engaging recessed portion 114 and the uneven portion 613a of the engaging flange portion 613 are engaged with the uneven portion 114a of the engaged recessed portion 114.
  • the clutch spring 620 is maintained in a compressed state, and the engagement flange portion 613 is pressed against the engagement recess portion 114 by the elastic force of the clutch spring 620. in.
  • the pressing portion 633 is separated from the clutch body 610.
  • the internal gear 420 rotates at a rotation speed equal to that of the sun gear 410 and the carrier 440, and is fixed to the drum shaft 300 of the internal gear 420 to rotate at a rotation speed equal to that of the rotor 110. That is, in the drive unit 30, as shown in FIG. In (a) and (b), the wing shaft 200, the planetary gear mechanism 400, and the drum shaft 300 are integrally rotated as indicated by a one-dot chain line. Thereby, the drum 22 rotates integrally with the stirring body 24. Further, the clutch spring 620 also rotates together with the clutch body 610.
  • the rotor 110 that is, the drum 22 and the agitating body 24, rotate the centrifugal force of the laundry acting on the drum 22 far greater than the gravity.
  • the centrifugal force By the action of the centrifugal force, the laundry is pressed onto the inner peripheral surface of the drum 22 to be dehydrated.
  • the drum 22 and the agitating body 24 are rotated such that the rotational speed of the agitating body 24 is faster than the rotational speed of the drum 22 .
  • the laundry in the drum 22 is not only hit by the agitation of the baffle 23 to the inner circumferential surface of the rolling wheel 22, but also rubbed by the blade 24a of the rotating agitating body 24.
  • the cleaning performance and the rinsing performance can be improved as compared with the structure in which the laundry is stirred only by the baffle 23.
  • the agitating body 24 is rotated at a rotation speed equal to that of the rotor 110, so that it is larger than the agitating body 24
  • the torque roller 22 is configured to rotate by decelerating the rotation of the rotor 110.
  • the motor 22 can be driven when the drum 22 and the agitating body 24 are driven, in a case where the drum 22 is rotated at a rotation speed equal to that of the rotor 110 and the agitating body 24 is rotated by increasing the rotation of the rotor 110.
  • the torque generated by 100 is reduced, reducing the power consumption of the drive motor 100.
  • the rotor 110 of the drive motor 100 and the agitating body 24 are coupled by one wing shaft 200. Therefore, unlike the structure in which the rotating shaft of the rotor 110 and the rotating shaft of the agitating body 24 are respectively disposed and coupled to each other, it is not necessary to align the axes of the centers of the two rotating shafts when assembling the driving unit 30. Thereby, the assembly of the drive unit 30 becomes easy. Furthermore, there is no need to worry about creating an axis misalignment between the two axes of rotation.
  • the space generated between the first rolling bearing 513 and the second rolling bearing 523 is used as the arrangement space of the planetary gear mechanism 400, so that it can be used in the drum.
  • the size of the drive unit 30 is reduced in the axial direction of the shaft 300. Thereby, the outer tub 20 and the drum 22 can be made larger in the front-rear direction, and thus the washing capacity can be increased.
  • the drum shaft 300 is fixed to the inner gear 420, and the front end portion 442b of the carrier shaft 442 provided on the planetary carrier 440 is protruded toward the outer surface of the drum shaft 300, and the clutch mechanism portion 600 and the protruding portion are protruded.
  • the front end portion 442b is associated with each other, thereby performing the operation of the planetary gear mechanism 400. Switching, the first form in which the wing shaft 200 and the drum shaft 300 rotate, respectively, switches the form of the drive unit 30 between the second form in which the wing shaft 200 and the drum shaft 300 rotate integrally.
  • the structure can be satisfactorily performed. Switching between a form and a second form. Further, by adjusting the number of teeth of the sun gear 410 and the internal gear 420, the reduction ratio of the rotor 110 and the drum shaft 300 can be set, and a wide range of reduction ratio can be set.
  • the drum shaft 300 can be rotated in the same direction as the wing shaft 200.
  • the stirring force by the stirring body 24 can be applied in the same direction of rotation of the drum 22, the stirring force of the laundry in the drum 22 can be improved.
  • the clutch body 610 that is fitted into the distal end portion 442b of the carrier shaft 442 that protrudes to the outside of the drum shaft 300 is moved in the axial direction of the drum shaft 300 by the moving mechanism portion DM, so that the clutch body 610 is moved.
  • the rack 611 is engaged with the rack 525 of the bearing unit 500, or the engagement flange portion 613 of the clutch body 610 is engaged with the engaged recess 114 of the rotor 110, thereby enabling concrete passage and
  • the carrier shaft 422, which is the planetary carrier 440, is associated with the clutch mechanism portion 600 in which the form of the drive unit 30 is switched between the first form and the second form.
  • the rack 525 that is engaged with the rack 611 of the clutch body 610 is formed on the rear unit 520 in which the second rolling bearing 523 is disposed concentrically with the carrier shaft 442 of the clutch body 610, it can be accurately performed.
  • the center of the rack 611 coincides with the center of the rack 525. Thereby, the racks 611 and 525 can be engaged with each other with high precision.
  • the clutch body 610 when the clutch body 610 is engaged with the engaged recessed portion 114 by the elastic force of the clutch spring 620, and the clutch body 610 is rotated together with the rotor 110 by the engagement,
  • the pressing portion 633 is in a state of being separated from the clutch body 610. Therefore, the rotation of the rotor 110 and the clutch body 610 is not hindered by the contact of the pressing portion 633 with the clutch body 610.
  • the bearing unit 500 is used to cover the inner bag from the front and rear sides by the front unit 510 including the first rolling bearing 513 and the rear unit 520 including the second rolling bearing 523 in the axial direction of the drum shaft 300.
  • the structure of the drum shaft 300 of the planetary gear mechanism 400 in the case where the bearing unit 500 is not divided, as shown in FIG. 13, in the bearing unit 500, in order to secure the opening O in which the drum shaft 300 of the planetary gear mechanism 400 is inserted, for example, it is necessary to adopt The second rolling bearing 523 having a larger outer diameter than the accommodating portion 300c of the drum shaft 300 is used, and the thickness of the rear shaft portion 300b of the drum shaft 300 is increased. The outer diameter of the second rolling bearing 523 is increased.
  • the drum shaft 300 of the inner-packet planetary gear mechanism 400 can be housed inside the bearing unit 500 by the combination of the front unit 510 and the rear unit 520, it is possible to avoid the use of the first large larger than necessary.
  • the rolling bearing 513 and the second rolling bearing 523, or the drum shaft 300 is unnecessarily heavy due to an increase in wall thickness.
  • the center P1 of the first rolling bearing 513 can be made
  • the center P2 of the second rolling bearing 523 is excellent in accuracy. Therefore, it is possible to prevent the drum shaft 300 from being smoothly rotated due to the misalignment of the center P1 of the first rolling bearing 513 and the second rolling bearing 523.
  • the stator 120 of the drive motor 100 is fixed to the rear unit 520 in which the second rolling bearing 523 is provided, the center of the stator 120 and the center P2 of the second rolling bearing 523 can be accurately matched. Since the center of the second rolling bearing 523 coincides with the center of the rotor 110 fixed to the wing shaft 200, the center of the stator 120 and the center accuracy of the rotor 110 are well matched. Thereby, the gap S (see FIG. 2) between the rotor 110 and the stator 120 can be kept constant, and the drive motor 100 can be stably rotated.
  • the clutch body 610 of the clutch body 610 is engaged with the rack 525 of the bearing unit 500 to restrict the circumferential rotation of the clutch body 610 with respect to the bearing unit 500.
  • the engagement flange portion 613 of the engagement clutch body 610 and the engaged concave portion 114 of the rotor 110 restrict the circumferential rotation of the clutch body 610 with respect to the rotor 100.
  • the configuration in which the front end portion of the clutch body 610 is engaged with the bearing unit 500 and the configuration in which the rear end portion of the clutch body 610 is engaged with the rotor 110 are not limited to the above-described embodiments, and other configurations may be employed.
  • a structure may be employed in which a projection is formed at the front end portion and the rear end portion of the clutch body 610, and a recess or a hole is formed in the bearing unit 500 and the rotor 110, and the projection is fitted into the recess or the hole.
  • the covering portion 521 covering the housing portion 300c of the drum shaft 300 is provided in the rear unit 520.
  • the cover portion 521 may also be disposed in the front unit 510, and the cover portion 521 may also be disposed to be separated from the front unit 510 and the rear unit 520.
  • the fitting recess 514 is provided in the front unit 510, and the fitting rib 527 is provided in the rear unit 520.
  • the fitting ribs 527 are in contact with the outer peripheral surfaces 527a and 514a of the fitted recessed portions 514 at the time of fitting.
  • the fitting rib 527 and the fitted recessed portion 514 may be configured to be in contact with each other, or the inner peripheral surface and the outer peripheral surface may be in contact with each other.
  • the inner circumferential surfaces when the inner circumferential surfaces are in contact with each other, the inner circumferential surfaces each have a circular shape concentric with the rolling bearing corresponding to each inner circumferential surface.
  • the circumferential surface that is in contact with each other may not be a completely circular shape but a shape that is cut in the middle of the circle. That is, the circumferential surface that is in contact with each other may also be a circular arc shape. That is, as long as a circular or circularly shaped circumferential surface concentric with the first rolling bearing 514 and a circular or circular circumferential surface concentric with the second rolling bearing 523 can be engaged, each circumferential surface is formed.
  • the shape of the part can be anything.
  • 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 is also applicable to a drum washing machine having a drying function, that is, a drum washing and drying machine.
  • 10 housing; 20: outer groove; 22: roller; 24: agitating body (rotating body); 24a: blade (projection); 30: drive unit (drive unit); 100: drive motor; 110: rotor; 114: engaged recess (second engaged portion); 120: stator; 200: wing shaft (first rotating shaft); 202: restricting ring; 300: drum shaft (second rotating shaft); 300a: front shaft 300b: rear axle portion; 300c: accommodating portion; 400: planetary gear mechanism (deceleration mechanism); 410: sun gear; 420: internal gear; 430: planetary gear; 431: first gear, 432: second gear; 440: planetary carrier; 442: carrier shaft (shaft portion); 500: bearing unit; 510: front unit; 513: first rolling bearing (first bearing); 514: fitted recess; 520: rear unit ; 523: second rolling bearing (second bearing); 525: rack (first engaged portion); 526: mounting bushing; 527: fitting rib; 600: clutch mechanism portion; 610: clutch body;

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
PCT/CN2014/083632 2014-04-25 2014-08-04 滚筒洗衣机 WO2015161579A1 (zh)

Priority Applications (1)

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JP2014-092120 2014-04-25
JP2014092120A JP6345974B2 (ja) 2014-04-25 2014-04-25 ドラム式洗濯機

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WO2017092643A1 (zh) * 2015-12-01 2017-06-08 青岛海尔洗衣机有限公司 滚筒洗衣机
EP3597811A4 (en) * 2017-03-14 2020-03-04 Qingdao Haier Drum Washing Machine Co., Ltd. CLUTCH FOR REDUCING THE SPEED OF A WASHING MACHINE AND WASHING MACHINE
CN110965265A (zh) * 2019-11-15 2020-04-07 海信（山东）冰箱有限公司 一种滚筒洗衣机
EP3674465A4 (en) * 2018-02-07 2020-12-09 Wuxi Little Swan Electric Co., Ltd. DRUM WASHING MACHINE
EP3877581A4 (en) * 2019-01-17 2022-01-12 Samsung Electronics Co., Ltd. WASHING MACHINE

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JP6564174B2 (ja) * 2014-09-10 2019-08-21 アクア株式会社 ドラム式洗濯機
JP6778173B2 (ja) * 2017-12-28 2020-10-28 日立グローバルライフソリューションズ株式会社 洗濯機及び洗濯機用の封止部材
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KR20200089604A (ko) * 2019-01-17 2020-07-27 삼성전자주식회사 세탁기
CN112064279A (zh) * 2019-05-23 2020-12-11 青岛海尔洗衣机有限公司 一种衣物清洗机
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WO2017092692A1 (zh) * 2015-12-01 2017-06-08 青岛海尔洗衣机有限公司 滚筒洗衣机
WO2017092643A1 (zh) * 2015-12-01 2017-06-08 青岛海尔洗衣机有限公司 滚筒洗衣机
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EP3597811A4 (en) * 2017-03-14 2020-03-04 Qingdao Haier Drum Washing Machine Co., Ltd. CLUTCH FOR REDUCING THE SPEED OF A WASHING MACHINE AND WASHING MACHINE
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CN105229216B (zh) 2017-10-20
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CN105229216A (zh) 2016-01-06

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